• Research Interests
• Brief History
• Teaching and Learning
• Publications
• Studentships
• Research Income
• Media Interest
• WWW Articles
• Conference Presentations

Since the 2007 Research Assessment Exercise I have:

• Won research grants worth over 2 million pounds
• Published 12 scientific articles
• Co-supervised 2 PhD students to completion

Since the 2001 Research Assessment Exercise I have:

• Won research grants worth over 4 million pounds
• Published 55 scientific articles
• Co-supervised 10 PhD students to completion

Research Interests

My major interests are in the areas of organic and environmental organic geochemistry, with particular emphasis in these areas:

1. Origin and significance of highly branched acyclic isoprenoids
2. Nature of unresolved complex mixtures of hydrocarbons
3. Studies of organic pollutants
   1. Oil pollution
   2. Other hydrophobic pollutants

Origin and Significance of Highly Branched Acyclic Isoprenoids

The structural and stereochemical specificity conferred on many organic molecules during biosynthesis is preserved when the compounds are incorporated into sediments. Proof of the structures of such molecules (biological markers) has had such a dramatic impact on petroleum geochemistry that laboratories worldwide are now equipped with the analytical instrumentation necessary for monitoring changes in such compounds. Amongst the most valuable and widely used are a number of acyclic isoprenoid hydrocarbons.

Cultures of the diatom Haslea ostrearia: producer of lipids useful to geochemistry and medicine!

The first synthesis and complete spectral characterisation (MS, ¹³C NMR) of a novel C₂₅ isoprenoid alkane and related alkenes was reported by myself and John Robson in Nature and allowed the compounds reported, but not identified, in over fifty other studies to be assigned. Subsequently, C₂₀ and C₃₀ analogues were also synthesised and the synthetic compounds were used to afford a possible explanation of their sedimentary abundance and worldwide distribution. A number of incorrect assignments by US workers, were corrected. The research area increased further in importance to industry with the discovery of the diatom (algal) source of the compounds by Australian workers and their occurrence in Russian and Australian crude oils. Subsequent reports resulted in continued funding which on completion, led to a postdoctoral NERC ROPA award in collaboration with Professor Jean-Michel Robert at the Université de Nantes, France (report rated Scientifically Excellent by NERC reviewers 1999). Invited lectures in the U.S.A., Spain and Australia, followed by a sabbatical year at the CSIRO Marine Laboratories in Australia were accompanied by filing of two provisionalpatents and numerous publications, describing the uses of the alkenes as biomarkers and as potential anti-tumour agents (see WWW links) and we recently identified all of the common sedimentary compounds. Owing to their structural and stereochemical specificity, these molecules are both potentially valuable diatom markers and may prove important to petroleum geochemistry and oceanography as 'biological markers' of algae. Indeed, we collaborated in a study published in Science (304, 584-587, 2004; DOI) with scientists at the Royal Netherlands Institute for Sea Research (NIOZ) and Stanford University, USA to use these compounds to calibrate the geological clock for the molecular evolution of Rhizosolenid diatoms.

Most recently we have discovered that one of these compounds is made exclusively by species of Haslea diatoms which live in sea-ice. Thus, the presence of the compound in ancient sediments (at least in the 10,000-year period of the Holocene) now aids the re-construction of the distribution and extent of paleaoice fronts, an important goal of climate research. We have published papers in Organic Geochemistry and Earth and Planetary Science Letters describing these findings.

Nature of Unresolved Complex Mixtures of Hydrocarbons

State-of-the art LC-MSn instrumentation in our air-conditioned laboratories. Such equipment allows detailed characterisation of complex mixtures of environmental pollutants.

It is astounding, but nonetheless true, that even with sophisticated analytical tools currently available, the hydrocarbon composition of the world's major energy source, namely crude oil was, until recently, virtually unknown. Our report in Nature 1990 that a considerable proportion of these previously unresolved and hence unidentified hydrocarbons could be characterised by oxidative degradation has therefore met with widespread interest. Synthesis, spectral characterisation and oxidation of some of the proposed hydrocarbons supported the conclusions of the initial studies, as did biological oxidation. Development of the methodology to include a quantitative, chemometrics-based analysis of the oxidation products also allowed the 'fingerprinting' of a variety of oils from oil spills and the method has also been applied to several unpublished oil spill incidents. The work attracted funding from British Petroleum and from the Natural Environment Research Council. The unravelling of crude oil composition has important consequences for both upstream and downstream petroleum industrial activities as well as for pollution studies. Significant in the latter respect is the increased toxicity of the UCM once oxidised. This realisation led to the funding of two further Ph.D. studentships and two postdoctoral fellows by NERC, from which numerous publications resulted, including a paper delivered to the World Congress of the Society for Environmental Toxicology and Chemistry (SETAC) which won the Procter & Gamble Eurocor prize for the best lecture by a young scientist for Ph.D. student Emma Smith and a paper published in Environmental Science and Technology, which was a "most cited" paper in 2007 (see publications). Steve recently won an Advanced Grant of €2M from the European Research Council to further this research.

Studies of Organic Pollutants

Oil Pollution

The Sea Empress stranded off Milford Haven.
Beach cleaning after the oil spill from the Sea Empress.

Oil pollution remains a widespread environmental problem. Application of the analytical and biological marker chemistry expertise developed in the foregoing studies to the identification of crude oils spilled in the environment has proved an extremely environmentally valuable exercise over many years and has led to both published and consultancy studies. Differentiation of petroleum-derived and biogenic hydrocarbons in Mussels (Mytilus edulis) from North Sea oil platforms required a revision of previous estimates of pollutant burdens and one of the first identifications of a specific algal source for the biogenic compounds was made. Extension of this careful, compound-specific analytical approach proved valuable for the identification of Nigerian crude oil spilled into the Humber Estuary and of hydrocarbons from the Sullom Voe oil terminal. A fully funded studentship from Kuwait provided instrumentation necessary for a realistic appraisal of the role of solar radiation in the degradation of spilled oil. It is apparent that this process has not been adequately modelled by previous studies and our results indicate that if suitable attention is paid to experimental design, major differences in the degradation rates of oil-derived water-soluble aromatics are observed. The results of these initial studies were presented at an invited lecture to the British Association for the Advancement of Science (Mason lecture). Successive studies were supported by the University, NERC and Plymouth Marine Laboratory including two further studentships, one student currently writing a PhD thesis, the other having completed in 1996. An important development has been extension of this approach to an examination of the toxicological importance of the compounds from crude oil. Indeed this has revealed that previous research has under estimated a significant environmental burden. This work represents one of the few U.K. studies of molecular changes in spilled oil composition despite the regular occurrence of oil spills of headline proportions (e.g. Braer, Sea Empress). Our studies of the latter have resulted in numerous publications and both research council and industry funds.

Other hydrophobic pollutants

Discharges of oil production chemicals add to the pollutant burden of the North Sea.

Industrial complexes are often situated on estuaries and use these water bodies as convenient discharge points for the dispersal of pollutants. However, many pollutants are hydrophobic and their transport paths are controlled by complex interactions. The fostering of relationships with Plymouth Marine Laboratory and the AstraZeneca Brixham Environmental Laboratory has led to industrial support (two SRF postdoctoral fellowships and a full-time and part-time PhD studentship) for studies into the behaviour and analysis of hydrophobic pollutants in aquatic systems. Here the approach focussed on the interactions between hydrophobic pollutants produced by industry and natural humic substances in estuarine waters (the latter obtained in collaboration with Birmingham University). Work focused on the importance of using natural and hence representative humic substances to differentiate from the results of other studies, which have used unrealistic commercial humics. Analytical methods developed included pyrolysis-GCMS and LC-MS-MS. Initial results with py-GCMS indicated major differences between humic substances coated onto estuarine particles collected from the Tees in summer compared to those collected in winter. However these results were not reproducible at low organic loadings. This has led us to turn to laboratory-based simulations of particle-organic interactions using ¹⁴C labelled pesticides as chemical probes. This approach led to the establishment of important physico-chemical partition data for a whole series of hydrophobic organic chemicals (HOCs) and importantly allowed an industrial problem relating to HOC desorption from soil to be solved. The skills developed led to a major contribution to the NERC LOIS programme based on an assessment of the budget of HOCs in the Humber estuary (see publications). Following successful completion of the LOIS study an application was made to the NERC MIME programme to extend our studies of the physico-chemical properties of HOCs, to chemicals discharged from oil platforms. The aim here was to combine the geochemistry with engineering models to produce a user-friendly management computer model from use of oil platforms. Some £296,000 of RC funds was granted to the Plymouth-led study (PI: S. Rowland) in June 1997 in two programmes of study. Industry contributions to the programme made total funding of this study >£1,000,000. The work, was completed in January 2000. The data are incorporated into a detailed hydrological-geochemical-toxicological model (Proteus^®) for management of oil platform discharges and now in use on several U.K. oil platforms. Worldwide concern over the effects of oestrogenic chemicals in the environment led to three studies funded by the Environment Agency and AstraZeneca, designed to examine the origins of such chemicals in sewage treatment works effluents. The results of these studies (Niven Ph.D., 2000) are now published (see publications).

Brief History

After 25 years in organic geochemistry research, at 54 I am currently Professor of Organic Geochemistry and head of the Petroleum and Environmental Geochemistry Group at the University of Plymouth. In that time I have published over 180 papers and supervised over to 30 PhD students. I have obtained over £4,000,000 in research grants since the 2001 Research Assessment Exercise and carried out a considerable amount of commissioned work for external agencies. I was an undergraduate at the University of Bristol and returned there as a postgraduate following 4 years industrial experience. After completing my Ph.D. under the supervision of Professor James Maxwell FRS, I undertook postdoctoral research with Professor Bob Alexander at Curtin University, Western Australia and then as a British Petroleum fellow at the University of Newcastle with Dr Archie Douglas. I was appointed to a lectureship at Plymouth in 1984, a Readership in 1989 and awarded a personal chair in 1993.

I was a member of the MRC Institute of Environment and Health working group on Estrogenic Chemicals in the Environment in 1996 and a Visiting Professor at the CSIRO Marine Laboratory in Hobart, Tasmania in 1997/8, sponsored by The Royal Society and British Council. I am co-author of a chapter in the book Chromatography in the Petroleum Industry (Elsevier Science B.V.) and author of the "Oil Pollution" entry in the Encylopedia of Analytical Sciences (Academic Press). From 1996- 2004, I was an Associate Editor of the leading Elsevier international organic geochemistry journal, Organic Geochemistry and from 1993-2001 I was a full board member and Membership Officer of the European Association of Organic Geochemists. I am also a Fellow of the Royal Society of Chemistry, a past Chair and currently a committee member of the Royal Society of Chemistry (Peninsula Section) and a member of the Association of Chemistry and the Environment.

I was a member of the international judging panel of a major science prize in December 2002.

In 2005 I was awarded a Blaustein Fellowship by the School of Earth Sciences at Stanford University, California, USA and visited there in that capacity for 4 weeks in July 2005. I also visited the University of Calgary in August 2005 supported by a Royal Society Short Term Visit Award.

In 2007 I gave the opening plenary lecture at the 23rd International Meeting on Organic Geochemistry in Torquay, U.K. (audience 550) and I have been invited to deliver a plenary lecture at the 2008 International Meeting of Australian Association of Organic Geochemists in Adelaide, Australia. I am consultant to oilfield specialists Oil Plus Ltd, Newbury, U.K., on naphthenic acid chemistry and to the U.K. Foreign & Commonwealth Office on forensic oil identification methods and a member of the Natural Environment Research Council (NERC) Peer Review College, NERC Life Sciences Mass Spectrometry Committee and NERC Services Review Group and of the Science Foundation Ireland Geosciences Review Panel. I won the "Making Plymouth Great" Business Ideas Challenge in 2007 and an ERC £2M Advanced Grant in 2008.

Teaching and Learning

Since the University is the National Centre for teaching in Environmental Sciences (http://www.gees.ac.uk), it is perhaps unsurprising that much of my teaching covers aspects of environmental organic chemistry. Other areas include analytical and biological organic chemistry for both undergraduate and postgraduate courses (B.Sc. (Hons) Chemistry, Centre for Chemical Sciences; B.Sc. (Hons) Environmental Science; M.Sc. Applied Marine Science). In addition, I am involved in the production of new teaching material which focuses on the use of computer-aided learning (CAL). In collaboration with colleague Dr Jason Truscott, and as part of the HEFCE Science Evaluation Enhancement and Dissemination (SEED) I have produced a CD, which allows lecturers to design their own CAL teaching packages by completing a simple template using Visual Basic^® programming. A related ongoing project has been supported by the University of Plymouth Student Centred Learning Initiative, and involves production of a CD CAL package specifically for environmental organic chemistry. The package allows students to learn via a series of theory, graphics and help pages and then to test themselves on each module via a multiple choice question test. The marks from the test are accessible by lecturers using a password if required. I have also devised a molecular modelling excercise using Alchemy^® software to model stereoisomers of chemical fingerprint compounds used in oil pollution monitoring. This excercise is conducted by both B.Sc. and M.Sc. level students.

In 2007 I authored a successful appeal to HEFCE for an award to the Centre for Chemical Sciences of £256,000 funds for the promotion of undergraduate chemistry at the University of Plymouth. I am currently preparing teaching material for the "Chemistry for Our Future" initiative administered by the Royal Society of Chemistry.

Publications

Refereed publications since 1996 (reverse chronological):

In Press, Submitted or In Preparation

Monitoring and fate of organic pollutants

• Tollefsen, K-E., Smith, B.E., Gregersen, I.K. and Rowland, S.J. Toxicity studies of some synthetic naphthenic acids. Chemosphere. (Submitted).
• West, C.E., Lui, Q., Hetheridge, M.J., Belt, S.J. and Rowland, S.J. Kinetics and phototransformation products of diazepam and its human metabolites in pure water and synthesised river water. Environmental Science & Technology. (In preparation).

2009

Monitoring and fate of organic pollutants

• Frenzel, M., James, P., Burton, S.K., Rowland, S.J. and Lappin-Scott, H.M. (2009) Towards bioremediation of toxic unresolved complex mixtures of hydrocarbons: identification of bacteria capable of rapid degradation of alkyltetralins. Journal of Soils & Sediments 9, 129-136. [doi: 10.1007/s11368-009-0070-4].
• Melbye, A.G., Brakstad, O.G., Hokstad, J.N., Gregersen, I.K., Hansen, B.H., Booth, A.M., Rowland, S.J. and Tollefsen, K.E. (2009) Chemical and toxicological characterization of an unresolved complex mixture-rich biodegraded crude oil. Environmental Toxicology and Chemistry 28, 1815-1824. [doi: 10.1897/08-545.1].
• Scarlett, A., Dissanayake, A., Galloway, T.S. and Rowland, S.J. (2009) Behavioural, physiological and cellular responses following trophic transfer of toxic monoaromatic hydrocarbons. Environmental Toxicology and Chemistry 28, 381-387. [doi: 10.1897/08-298.1].
• Teuten, E.L., Saquing, J.M., Knappe, D.R.U., Barlaz, M.A., Jonsson, S., Björn, A., Rowland, S.J., Thompson, R.C., Galloway, T.S., Yamashita, R., Ochi, D., Watanuki, Y., Moore, C., Viet, P.H., Tana, T.S., Prudente, M., Boonyatumanond, R., Zakaria, M.P., Akkhavong, K., Ogata, Y., Hirai, H., Iwasa, S., Mizukawa, K., Hagino, Y., Imamura, A., Saha, M. and Takada, H. (2009) Transport and release of chemicals from plastics to the environment and to wildlife. Philosophical Transactions of the Royal Society B: Biological Sciences 364, 2027-2045. [doi: 10.1098/rstb.2008.0284].

2008

Highly branched isoprenoids from diatomaceous algae

• Belt, S.T., Massé, G., Vare, L.L., Rowland, S.J., Poulin, M., Sicre, M.-A., Sampei, M. and Fortier, L. (2008) Distinctive ¹³C isotopic signature distinguishes a novel sea ice biomarker in Arctic sediments and sediment traps. Marine Chemistry 112, 158-167. [doi: 10.1016/j.marchem.2008.09.002].
• Massé, G., Rowland, S.J., Sicre, M.-A., Jacob, J., Jansen, E. and Belt, S.T. (2008) Abrupt climate changes for Iceland during the last millennium: Evidence from high resolution sea ice reconstructions. Earth Planetary Science Letters 269, 564-568. [doi: 10.1016/j.epsl.2008.03.017].

Monitoring and fate of organic pollutants

• Booth, A.M., Scarlett, A.G., Lewis, C.A., Belt, S.T. and Rowland, S.J. (2008) Unresolved complex mixtures (UCMs) of aromatic hydrocarbons: Branched alkyl indanes and branched alkyl tetralins are present in UCMs and accumulated by and toxic to, the mussel Mytilus edulis. Environmental Science & Technology 42, 8122-8126. [doi: 10.1021/es801601x].
• Redshaw, C.H., Cooke, M.P., Talbot, H.M., McGrath, S. and Rowland, S.J. (2008) Low biodegradability of fluoxetine HCl, diazepam and their human metabolites in sewage sludge-amended soil. Journal of Soils & Sediments 8, 217-230. [doi: 10.1007/s11368-008-0024-2].
• Redshaw, C.H., Wootton, V. and Rowland, S.J. (2008) Uptake of the pharmaceutical Fluoxetine Hydrochloride from growth medium by Brassicaceae. Phytochemistry 69, 2510-2516. [doi: 10.1016/j.phytochem.2008.06.018].
• Scarlett, A., Rowland, S.J., Galloway, T.S., Lewis, A.C. and Booth, A.M. (2008) Chronic sublethal effects associated with branched alkylbenzenes bioaccumulated by mussels. Environmental Toxicology and Chemistry 27, 561-567. [doi: 10.1897/07-347.1].
• Smith, B.E. and Rowland, S.J. (2008) A derivatisation and liquid chromatography/electrospray ionisation multistage mass spectrometry method for the characterisation of naphthenic acids. Rapid Communications in Mass Spectrometry 22, 3909-3927. [doi: 10.1002/rcm.3806].
• Smith, B.E., Lewis, C.A., Belt, S.T., Whitby, C. and Rowland, S.J. (2008) Effects of alkyl chain branching on the biotransformation of naphthenic acids. Environmental Science & Technology 42, 9323-9328. [doi: 10.1021/es801922p].

2007

Highly branched isoprenoids from diatomaceous algae

• Belt, S.T., Massé, G., Rowland, S.J., Poulin, M., Michel, C. and LeBlanc, B. (2007) A novel chemical fossil of palaeo sea ice: IP₂₅. Organic Geochemistry 38, 16-27. [doi: 10.1016/j.orggeochem.2006.09.013].

Monitoring and fate of organic pollutants

• Booth, A.M., Aitken, C., Jones, D.M., Lewis, C.A., and Rowland, S.J. (2007) Resistance of toxic alkylcyclohexyltetralins to biodegradation by aerobic bacteria. Organic Geochemistry 38, 540-550. [doi: 10.1016/j.orggeochem.2006.12.008].
• Booth, A., Sutton, P.A., Lewis, C.A., Lewis, A.C., Scarlett, A., Wing Chau, Widdows, J. and Rowland, S.J. (2007) Unresolved complex mixtures of aromatic hydrocarbons: Thousands of overlooked persistent, bioaccumulative and toxic contaminants in mussels. Environmental Science and Technology 41, 457-464. [doi: 10.1021/es0615829]. This publication is being featured on the ACS Publications website as one of the Most-Cited Articles published in 2007 and cited through the period ending 31 December 2007. Most-Cited Articles listed are based on data from Thomson Web of Science®.
• Lutnaes, B.F., Krane, J., Smith, B.E. and Rowland, S.J. (2007) Structure elucidation of C₈₀, C₈₁ and C₈₂ isoprenoid tetraacids responsible for naphthenate deposition in crude oil processing. Organic & Biomolecular Chemistry 5, 1873-1877. [doi: 10.1039/b701462g].
• Scarlett A., Canty M.N., Smith E.L., Rowland S.J. and Galloway T.S. (2007) Can amphipod behaviour help to predict chronic toxicity of sediments? Human and Ecological Risk Assessment 13, 1-13. [doi: 10.1080/10807030701341035].
• Scarlett, A., Galloway, T.S. and Rowland, S.J. (2007) Chronic toxicity of unresolved complex mixtures (UCM) of hydrocarbons in marine sediments. Journal of Soils & Sediments 7, 200-206. [doi: 10.1065/jss2007.06.232].
• Scarlett, A., Rowland, S.J., Canty, M., Smith, E.L. and Galloway, T.S. (2007) Method for assessing the chronic toxicity of marine and estuarine sediment-associated contaminants using the amphipod Corophium volutator. Marine Environmental Research 63, 457-470. [doi: 10.1016/j.marenvres.2006.12.006].
• Smith, B.E., Sutton, P.A., Lewis, C.A., Dunsmore, B., Fowler, G., Krane, J., Lutnaes, B.F., Brandal, Ø., Sjöblom, J. and Rowland, S.J. (2007) Analysis of 'ARN' naphthenic acids by high temperature gas chromatography and high performance liquid chromatography. Journal of Separation Science 30, 375-380. [doi: 10.1002/jssc.200600266].
• Teuten, E.L., Rowland, S.J., Galloway, T.S. and Thompson, R.C. (2007) Potential for plastics to transport hydrophobic contaminants. Environmental Science and Technology 41, 7759-7764. [doi: 10.1021/es071737s].

2006

Highly branched isoprenoids from diatomaceous algae

• Belt, S.T., Massé, G., Rowland, S.J. and Rohmer, M. (2006) Highly branched isoprenoid alcohols and epoxides in the diatom Haslea ostrearia Simonsen. Organic Geochemistry 37, 133-145. [doi: 10.1016/j.orggeochem.2005.10.005].

Monitoring and fate of organic pollutants

• Reineke, V., Rullkötter, J., Smith, E.L. and Rowland, S.J. (2006) Toxicity and compositional analysis of aromatic hydrocarbon fractions of two pairs of undegraded and biodegraded crude oils from the Santa Maria (California) and Vienna basins. Organic Geochemistry 37, 1885-1899. [doi: 10.1016/j.orggeochem.2006.07.017].

Other publications

• Aranami, K., Rowland, S.J. and Readman, J.W. (2006) Discriminating biogenic and anthropogenic chlorinated organic compounds using multi-isotope analyses of individual compounds. In: International Conference on Isotopes in Environmental Studies (Eds. Povinec, P.P. and Sanchez-Cabeza, J.A.). Radioactivity in the Environment 8, 24-38.

2005

Monitoring and fate of organic pollutants

• Scarlett, A., Canty, M., Nilsson, J., Smith, E.L., Rowland, S.J. and Galloway, T.S. (2005) Comparative toxicity of two oil dispersants, Superdispersant-25 and Corexit 9527, to a range of coastal species. Environmental Toxicology and Chemistry 24, 1219-1227. [doi: 10.1897/04-334R.1].
• Sutton, P.A., Lewis, C.A. and Rowland S.J. (2005) Isolation of individual hydrocarbons from the unresolved complex hydrocarbon mixture of a biodegraded crude oil using preparative capillary gas chromatography. Organic Geochemistry 36, 963-970. [doi: 10.1016/j.orggeochem.2004.11.007].

2004

Highly branched isoprenoids from diatomaceous algae

• Massé, G., Belt, S.T., Allard, W.G., Lewis, C.A., Wakeham, S.G. and Rowland, S.J. (2004) Occurrence of novel monocyclic alkenes from diatoms in marine sedimenting particles and sediments. Organic Geochemistry 35, 813-822. [doi: 10.1016/j.orggeochem.2004.03.004].
• Massé, G., Belt, S.T. and Rowland, S.J. (2004) Biosynthesis of unusual monocyclic alkenes by the diatom, Rhizosolenia setigera (Brightwell). Phytochemistry 65, 1101-1106. [doi: 10.1016/j.phytochem.2004.02.019].
• Massé, G., Belt, S.T., Rowland, S.J. and Rohmer, M. (2004) Isoprenoid biosynthesis in the diatoms Rhizosolenia setigera (Brightwell) and Haslea ostrearia (Simonsen). Proceedings of the National Academy of Sciences of the United States of America 101, 4413-4418. [doi: 10.1073/pnas.0400902101].
• Poulin, M., Massé, G., Belt, S.T., Delavault, P., Rousseau, F., Robert, J.-M. and Rowland, S.J. (2004) Morphological, biochemical and molecular evidence for the transfer of Gyrosigma nipkowii Meister to the genus Haslea (Bacillariophyta). European Journal of Phycology 39, 181-195. [doi: 10.1080/0967026042000202136]
• Sinninghe Damsté, J.S., Muyzer, G., Abbas, B., Rampen, S.W., Massé, G., Allard, W.G., Belt, S. T., Robert, J.-M., Rowland, S. J., Moldowan, J.M., Barbanti, S.M., Fago, F.J., Denisevich, P., Dahl, J., Trinidade, L.A.F., and Schouten, S. (2004) The rise of rhizosolenid diatoms. Science 304, 584-587. [doi: 10.1126/science.1096806].

Monitoring and fate of organic pollutants

• Thompson, R.C., Olsen, Y., Mitchell, R., Davis, A., Rowland, S.J., John, A.W.G., McGonigle, D., and Russell, A.E. (2004) Lost at sea: Where does all the plastic go? Science 304, 838. [doi: 10.1126/science.1094559].
• Crowe, T., Smith, E.L., Donkin, P., Barnaby, D. and Rowland, S.J. (2004) Measurements of sublethal effects on individual organisms indicate community-level impacts of pollution. Journal of Applied Ecology 4, 114-123. [doi: 10.1111/j.1365-2664.2004.00882.x].

2003

Highly branched isoprenoids from diatomaceous algae

• Belt, S.T., Massé, G., Allard, W.G., Robert, J.-M. and Rowland, S.J. (2003) Novel monocyclic sester- and triterpenoids from the marine diatom, Rhizosolenia setigera. Tetrahedron Letters 44, 9103-9106.

Monitoring and fate of organic pollutants

• Donkin, P., Smith, E.L. and Rowland, S.J. (2003) Toxic effects of unresolved complex mixtures of aromatic hydrocarbons accumulated by mussels, Mytilus edulis, from contaminated field sites. Environmental Science and Technology 37, 4825-4830.

2002

Highly branched isoprenoids from diatomaceous algae

• Belt, S.T., Massé, G., Allard, W.G., Robert, J.-M. and Rowland, S.J. (2002) Effects of auxosporulation on distributions of C₂₅ and C₃₀> isoprenoid alkenes in Rhizosolenia setigera. Phytochemistry 59, 141-149.

Monitoring and fate of organic pollutants

• McCormack, P., Jones, P. and Rowland, S.J. (2002) Liquid chromatography/electrospray ionisation mass spectrometric investigations of imidazoline corrosion inhibitors in crude oils. Rapid Communications in Mass Spectrometry 16, 705-712. [doi: 10.1002/rcm.625].

Other publications

• O'Connor, G., Rowland, S.J. and Evans, E.H. (2002) Evaluation of gas chromatography coupled with low pressure plasma source mass spectrometry for the screening of volatile organic compounds in food. Journal of Separation Science 25, 839-846.

2001

Highly branched isoprenoids from diatomaceous algae

• Allard, W.G., Belt, S.T., Massé, G., Naumann, R., Robert, J.-M. and Rowland, S.J. (2001) Tetra-unsaturated sesterterpenoids (Haslenes) from Haslea ostrearia and related species. Phytochemistry 56, 795-800.
• Belt, S.T., Allard, W.G., Johns, L., König, W.A., Massé, G., Robert, J.-M. and Rowland, S. (2001) Variable stereochemistry in highly branched isoprenoids from diatoms. Chirality 13, 415-419.
• Belt, S.T., Allard, W.G., Massé, G., Robert, J.-M. and Rowland, S.J. (2001) Structural characterisation of C₃₀ highly branched isoprenoid alkenes (rhizenes) in the marine diatom Rhizosolenia setigera. Tetrahedron Letters 42, 5583-5585.
• Belt, S.T., Massé, G., Allard, W.G., Robert, J.-M. and Rowland, S.J. (2001) Identification of a C₂₅ highly branched isoprenoid triene in the freshwater diatom Navicula sclesvicensis. Organic Geochemistry 32, 1169-1172.
• Belt, S.T., Massé, G., Allard, W.G., Robert, J.-M. and Rowland, S.J. (2001) C₂₅ highly branched isoprenoid alkenes in planktonic diatoms of the Pleurosigma genus. Organic Geochemistry 32 1271-1275.
• Massé, G., Poulin, M., Belt, S.T., Barreau, A., Robert, J.-M., Rincé, Y. and Rowland, S.J. (2001) A simple method for SEM examination of sectioned diatom frustules. Journal of Microscopy-Oxford 204, 87-92.
• Massé, G., Rince, Y., Cox, E.J., Allard, G., Belt, S.T. and Rowland, S.J. (2001) Haslea salstonica sp. nov. and Haslea pseudostrearia sp. nov. (Bacillariophyta), two new epibenthic diatoms from the Kingsbridge estuary, United Kingdom. Comptes Rendus de l'Academie des Sciences Serie III-Sciences de la Vie 324, 617-626.
• Rowland, S.J., Allard, W.G., Belt, S.T., Massé, G., Robert, J.-M., Blackburn, S., Frampton, D., Revill, A.T. and Volkman, J.K. (2001) Factors influencing the distributions of polyunsaturated terpenoids in the diatom, Rhizosolenia setigera. Phytochemistry. 58, 717-728.
• Rowland, S.J., Belt, S.T., Wraige, E.J., Massé, G., Roussakis, C. and Robert, J.-M. (2001) Effects of temperature on polyunsaturation in cytostatic lipids of Haslea ostrearia. Phytochemistry 56, 597-602.

Monitoring and fate of organic pollutants

• McCormack, P., Jones, P., Hetheridge, M.J. and Rowland, S.J. (2001) Analysis of oilfield produced waters and production chemicals by electrospray ionisation multi-stage mass spectrometry (ESI-MSⁿ). Water Research 35, 3567-3578. [doi: 10.1016/S0043-1354(01)00070-7].
• Niven, S.J., Snape, J., Hetheridge, M., Evans, M., McEvoy, J. and Rowland, S.J. (2001) Investigations of cholesterol transformation during sewage treatment: relevance to estrogen formation pathways? Science of the Total Environment 279, 75-86.
• Niven, S.J., Snape, J., Hetheridge, M., Evans, M., McEvoy, J., Sutton, P.G. and Rowland, S.J. (2001) Investigations of the origins of estrogenic A-ring aromatic steroids in UK sewage treatment works effluents. Analyst (London) 126, 285-287.
• Rowland, S., Donkin, P., Smith, E. and Wraige, E. (2001) Aromatic hydrocarbon 'humps' in the marine environment: unrecognized toxins? Environmental Science and Technology 13, 2640-2644.
• Smith, E., Wraige, E., Donkin, P. and Rowland, S. (2001) Hydrocarbon humps in the marine environment: Synthesis, toxicity and aqueous solubility of monaromatic compounds. Environmental Toxicology and Chemistry 20, 2428–2432.

Other publications

• Kiriakoulakis, K., Stutt, E., Rowland, S.J., Vangriesheim, A., Lampitt, R.S. and Wolff, G.A. (2001) Controls on the organic chemical composition of settling particles in the Northeast Atlantic Ocean. Progress in Oceanography 50, 65-87.

2000

Highly branched isoprenoids from diatomaceous algae

• Belt, S.T., Allard, W.G., Massé, G., Robert, J.-M. and Rowland S.J. (2000) Highly branched isoprenoids (HBIs): Identification of the most common and abundant sedimentary isomers. Geochimica et Cosmochimica Acta 64, 3839-3851.
• Belt, A.T., Allard, G., Massé, G., Robert, J.-M. and Rowland, S.J. (2000) Important sedimentary sesterterpenoids from the diatom Pleurosigma intermedium. Chemical Communications, 501-502.
• Belt, S.T., Allard, W.G., Rintatalo, J., Johns, L.A., van Duin, A.C.T. and Rowland, S.J. (2000) Clay and acid catalysed isomerisation and cyclisation reactions of highly branched isoprenoid alkenes: implications for sedimentary reactions and distributions. Geochimica et Cosmochimica Acta 64, 3337-3345.
• Johns, L., Belt, S., Lewis, C.A., Rowland, S., Massé, G., Robert, J.-M. and König, W.A. (2000) Configurations of polyunsaturated sesterterpenoids from the diatom, Haslea ostrearia. Phytochemistry 53, 607-611.

1999

Highly branched isoprenoids from diatomaceous algae

• Johns, L., Wraige, E.J., Belt, S.T., Lewis, C.A., Massé, G., Robert, J.-M. and Rowland, S.J. (1999) Identification of a C₂₅ highly branched isoprenoid (HBI) diene in Antarctic sediments, sea-ice diatoms and cultured diatoms. Organic Geochemistry 30, 1471-1475.
• Rowland, S.J., Belt, S.T., Johns, L., Wraige, E.J., Lewis, C.A., Robert, J.-M. Massé, G., König, W., Frampton, D., Blackburn, S., Revill, A.T. and Volkman, J.K. (1999) Controls on the sedimentary distributions of the highly branched isoprenoid lipids of diatomaceous algae. 19^th International Meeting on Organic Geochemistry, Istanbul, Turkey, 6-10 September 1999, Abstracts Part 1, 04B, Tubitak Marmara Research Center, 17-18.
• Wraige, E.J., Johns, L., Belt, S.T., Massé, G., Robert, J.-M. and Rowland, S. (1999) Highly branched C₂₅ isoprenoids in axenic cultures of Haslea ostrearia. Phytochemistry 51, 69-73. [doi: 10.1016/S0031-9422(98)00694-3].

Monitoring and fate of organic pollutants

• Glegg, G.A., Hickman, L. and Rowland, S.J. (1999) Contamination of limpets (Patella vulgata) following the Sea Empress oil spill. Marine Pollution Bulletin 38, 119-125.
• Stutt, E., Pan, G., Sturt, H., McCormack, P., Herzl, V., Millward, G. and Rowland, S.J. (1999) Fate of oil production chemicals in seawater: Reactivity of organic constituents in produced waters. 19^th International Meeting on Organic Geochemistry, Istanbul, Turkey, 6-10 September 1999, Abstracts Part 1, PB55, Tubitak Marmara Research Center, 431-432.
• Zhou, J.L., Fileman, T.W., Evans, S., Donkin, P., Readman, J.W., Mantoura, R.F.C. and Rowland, S. (1999) The partition of fluoranthene and pyrene between suspended particles and dissolved phase in the Humber Estuary: a study of the controlling factors. Science of the Total Environment 243/244, 305-321.

1998

Highly branched isoprenoids from diatomaceous algae

• Cooke, D.A., Barlow, R., Green, J., Belt, S.T. and Rowland, S.J. (1998) Seasonal variations of highly branched isoprenoid hydrocarbons and pigment biomarkers in intertidal sediments of the Tamar estuary, UK. Marine Environmental Ressearch 45, 309-324.
• Pearce, R.B., Kemp, A.E.S., Koizumi, I., Pike, J., Cramp, A., Wraige, E.J. and Rowland, S. J. (1998) A lamina-scale, SEM-based study of a late Quaternary diatom-ooze sapropel from the Mediterranean ridge, Site 971. Proceedings ODP, Scientific Results, 160. College Station, TX (ODP), 333-348.
• Rullkotter, J., Rinna, J., Bouloubassi, I., Scholz-Boettcher, B.M., Meyers, P.A., Johns, L. and Rowland, S.J. (1998) Biological marker significance of organic matter origin and transformation in sapropels from the Pisano Plateau, Site 964. Proceedings ODP, Scientific Results, 160. College Station, TX (ODP), 271-284. [doi: 10.2973/odp.proc.sr.160.023.1998].
• Wraige, E.J., Belt, S.T., Massé, G., Robert, J.-M. and Rowland, S.J. (1998) Variations in distributions of C₂₅ highly branched isoprenoid (HBI) alkenes in the diatom, Haslea ostrearia: influence of salinity. Organic Geochemistry 28, 855-859.

Monitoring and fate of organic pollutants

• Belt, S.T., Rowland, S. and Scaiano, J.C. (1998) Rate constants for the abstraction of hydrogen from alkyl aromatics by alkoxyl radicals and excited state ketones: relevance to the photodegradation of the water-soluble fraction of crude oil. Marine Chemistry 61, 157-162.
• Zhou, J.L., Fileman, T.W., Evans, S., Donkin, P., Llewellyn, C., Readman, J.W., Mantoura, R.F.C. and Rowland, S.J. (1998) Fluoranthene and pyrene in the suspended particulate matter and surface sediments of the Humber estuary, UK. Marine Pollution Bulletin 36, 587-597.

Other publications

• Sutton, P.A., Lewis, C.A., Patell, Y., Seddon, K.R. and Rowland, S.J. (1998) Attempted dissolution of 'insoluble organic matter' from Methanococcus jannaschii and Rostherne Mere (UK) sediment with 1-ethyl-3-methyl imidazolium chloride/aluminium (III) chloride. Ancient Biomolecules 2, 195-207.

1997

Highly branched isoprenoids from diatomaceous algae

• Wraige, E.J., Belt, S.T., Lewis, C.A., Cooke, D.A., Robert, J.-M., Massé, G. and Rowland, S.J. (1997) Variations in structures and distributions of C₂₅ highly branched isoprenoid (HBI) alkenes in cultures of the diatom, Haslea ostrearia (Simonsen). Organic Geochemistry 27, 497-505.

Monitoring and fate of organic pollutants

1997

• Heath, D.J., Lewis, C.A. and Rowland, S.J. (1997) The use of high temperature gas chromatography to study the biodegradation of high molecular weight hydrocarbons. Organic Geochemistry 26, 769-785.
• Read, P., Beere, H., Ebdon, L., Leizers, M., Hetheridge, M. and Rowland, S. (1997) Gas chromatography-microwave-induced plasma mass spectrometry (GC-MIP-MS): a multi-element analytical tool for organic geochemistry. Organic Geochemistry 26, 11-17.
• Zhou, J.L. and Rowland, S.J. (1997) Evaluation of the interactions between hydrophobic organic pollutants and suspended particles in estuarine waters. Water Research 31, 1708-1718.
• Zhou, J.L. and Rowland, S.J. (1997) The sorption of hydrophobic pyrethroid insecticides to estuarine particles: a compilation of recent research. In Biogeochemistry of Intertidal Sediments. (T. Jickells & J. Rae, eds). Cambridge University Press.
• Zhou, J.L., Rowland, S.J., Mantoura, R.F.C. and Lane, M.C.G. (1997) Desorption of tefluthrin insecticide from soil in simulated rainfall runoff systems-kinetic studies and modelling. Water Research 31, 75-84.

1996

Highly branched isoprenoids from diatomaceous algae

• Belt, S.T., Cooke, D.A., Robert, J.-M. and Rowland, S. (1996) Structural characterization of widespread polyunsaturated isoprenoid biomarkers: a C₂₅ triene, tetraene and pentaene from the diatom Haslea ostrearia Simonsen. Tetrahedron Letters 37, 4755-4758.

Monitoring and fate of organic pollutants

• Zhou, J.L., Fileman, T.W., Evans, S., Donkin, P., Mantoura, R.F.C. and Rowland, S.J. (1996) Seasonal distribution of dissolved pesticides and polynuclear aromatic hydrocarbons in the Humber Estuary and Humber coastal zone. Marine Pollution Bulletin 32, 599-608.

Studentships

Research Income

Income since 1996:

Media Interest

News articles since 2001:

The publication in Science of my work on plastics as pollutants, with colleague Dr Richard Thompson and others, resulted in a worldwide media interest including:

Radio/Television:

• BBC 1 TV National News
• BBC News 24
• BBC Radio 4 (Today Programme)
• BBC Radio 1, 2, 3, 4 (News)
• BBC World Service
• Canadian Broadcasting Corporation
• ABC Australia

Websites:

• Nature
• Washington Post
• Washington Times
• New York Times
• New Scientist
• National Geographic
• CBBC

Press:

• The Guardian, May 7^th 2004, page 7. Study Finds Oceans of Old Plastic.
• Pravda
• The Wall Street Journal
• Boston Globe
• The Scotsman
• Plastics & Rubber Weekly, May 14^th 2004, page 5. Sea Yields Growing Amount of Plastics.
• Chemical & Engineering News
• Western Morning News, May 10^th 2004, page 13. Invisible Pollution Threatens Coastline.
• ............ and many others!

Other work has been featured as well:

• Plymouth Evening Herald, 11 January 2008, Winner Captialises on Success.
• The Dan Rather Reports, November/December 2007, A Crack in the Ice (see from about 7 minutes 20 seconds).
• BBC Ten O'Clock News (e.g. see Polar Bears in the Arctic Region).
• Plymouth Evening Herald, 17 November 2007, Business Class.
• Western Morning News (Devon), 3 November 2007, page 30, Ice Research May Help Predict Climate Change.
• BBC website, 15 October 2007, Arctic Muds Reveal Sea Ice Record.
• Dublin Evening Herald, May 29^st 2002, page 7. Grant to Research Impact of Oil Slicks on the Oceans.
• Western Daily Press (Bristol), May 29^th 2002, page 24. Plymouth, Devon: The After-Effects of Treating Oil Spills ... .
• Western Morning News (Devon), May 29^th 2002, page 6. £200,000 Probe into Effects of Oil Spills.
• Western Morning News (Devon), May 23^rd 2002, page 25. Scientist Set to Explore Origins of Life on Earth.
• Plymouth Evening Herald, May 21^st 2002, page 27. Scientist Awarded £67,000.
• Plymouth Evening Herald, May 20^th 2002, page 7. Scientist Studies the Bubbles that Created Life.
• Western Daily Press (Bristol), May 18^th 2002, page 24. Plymouth, Devon: Scientists in the Petroleum and Geochemsitry Group are to Conduct Research into Microscopic Algae ... .

WWW Articles

WWW articles since 1996:

• http://www.bbc.co.uk/worldservice/programmes/sci_act.shtml
• http://www.fas.org/spp/eprint/mars_uk/rowland.html
• http://www.iger.bbsrc.ac.uk/igerweb/confs/simsug/abstracts/controls.htm
• http://www.science.plym.ac.uk/departments/environmental/news_stories/rowland_bc-australia.htm

International & National Conference and Meeting Presentations

Conference presentations since 1996:

2009

• 24^th International Meeting on Organic Geochemistry, Bremen, Germany, 6-11 September 2009 (plenary oral; 3 posters^{1, 2, 3}, colleague).
• 2^nd International Conference on Applied Microbiology and Molecular Biology in Oil Systems, Aarhus, Denmark, 17-19 June 2009 (oral, colleague).

2008

• American Geophysical Union Fall Meeting 2008, San Francisco, U.S.A., 15-19 December 2008 (oral, colleague).
• Australian Organic Geochemistry Conference, Adelaide, Australia, 8-11 September 2008 (invited plenary).
• 163^rd Meeting of the Society for General Microbiology, Dublin, Eire, 8-11 September 2008 (oral, colleague; poster, colleague).
• 5^th SETAC World Congress, Sydney, Australia, 3-7 August 2008 (poster, colleague).
• 2^nd Norwegian Environmental Toxicology Symposium, Trondheim, Norway, 2-4 April 2008 (oral, colleague).
• EGU General Assembly 2008, Vienna, Austria, 13-18 April 2008 (oral, colleague).
• 162^nd Meeting of the Society for General Microbiology, Edinburgh, U.K., 31 March-3 April 2008 (poster, colleague).

2007

• Chemistry in the Oil Industry X Oilfield Chemistry: The Solution or the Challenge? Manchester, U.K., 5-7 November 2007 (oral, colleague).
• 23^rd International Meeting on Organic Geochemistry, Torquay, U.K., 9-14 September 2007 (plenary oral; 2 orals, colleague; 4 posters^{1, 2}).
• 5^th IWA Specialised Conference on Assessment and Control of Micropollutants/Hazardous Substances in Water (MICROPOL & ECOHAZARD 2007), Frankfurt/Main, Germany, 17–20 June 2007 (oral).
• 8^th International Conference on Petroleum Phase Behavior and Fouling, Pau, France, 10-14 June 2007 (oral, colleague).
• SETAC Europe 17^th Annual Meeting, Porto, Portugal, 20-24 May 2007 (2 posters^{1, 2}, colleague).
• 160^th Meeting of the Society for General Microbiology, Manchester, U.K., 26-29 March 2007 (poster, colleague).
• International Conference on Analysis of Emerging Contaminants in the Environment (EmCon 2007), York, U.K., 7–9 March 2007 (oral, colleague).

2006

• Arctic Net 3^rd Annual Scientific Meeting. Victoria, Canada, 12-15 December 2006 (poster; colleague).
• American Geophysical Union. San Francisco U.S.A., 11-15 December 2006 (poster; colleague).
• SETAC North America 27^th Annual Meeting, Québec, Canada, 5-9 November 2006 (oral, colleague).
• Royal Society of Chemistry: Environmental Forensics. Durham, U.K., 18-21 September 2006 (invited keynote oral).
• 11^th International Symposium on Microbial Ecology (ISME-11), Vienna, Austria, 20-25 August 2006 (oral, colleague; poster, colleague).
• 18^th Annual Meeting of the British Organic Geochemical Society, Milton Keynes, U.K., 28-29 June 2006 (3 posters, colleague).
• HOLIVAR2006 Natural Climate Variability and Global Warming UCL, London, U.K., 12-15 June 2006 (poster, colleague).
• 158^th Meeting of the Society for General Microbiology, Warwick, U.K., 3-6 April 2006 (poster, colleague).
• European Geosciences Union (EGU) General Assembly, Biogeosciences, Vienna, Austria, 2-7 April 2006 (invited oral).
• Los Martes de L'Oceanografic Lectures, Ciudad de las Artes y Las Ciencias de Valencia, Valencia, Spain, 21 February 2006 (oral, colleague).
• 9^th Hyphenated Techniques in Chromatography Symposium, York, U.K., 8-10 February 2006 (poster, colleague).
• Ussher Society, 44^th Annual Conference, Bideford, U.K., 3-5 January 2006 (invited oral).

2005

• 2^nd Annual ArcticNet Scientific Meeting (ASM2005), Banff, Canada, 13-16 December 2005 (poster, colleague).
• ESF Exploratory Workshop - Life, Environmental and Earth Sciences (LESC), Delmenhorst, Germany 12-16 December 2005 (invited oral and poster).
• 6^th European Meeting on Environmental Chemistry, Belgrade, Serbia and Montenegro, 6-10 December 2005 (oral, colleague).
• Geological Society Meeting, London, U.K., 3-4 October 2005 (oral).
• 22^nd International Meeting on Organic Geochemistry, Seville, Spain, 12-16 September 2005 (poster, colleague).
• 17^th Annual Meeting of the British Organic Geochemical Society, Liverpool, U.K., 14-15 July 2005 (oral, colleague).
• Royal Society of Chemistry Meeting and Postgraduate Industry Tour, Newcastle, U.K., 18-20 April 2005 (poster, colleague).
• Society of Chemical Industry (SCI) Meeting, Pharmaceuticals in the Environment: Fate, Effects and Regulation, London, U.K., 1 March 2005 (poster, colleague).

2004

• 5^th European Meeting on Environmental Chemistry, Bari, Italy, 15-18 December 2004 (poster, colleague).
• 16^th Annual Meeting of the British Organic Geochemistry Society, Nottingham, U.K., 14-15 July 2004 (oral, colleague; poster, colleague).
• Goldschmidt Geochemistry conference, Copenhagen, Denmark, 5-11 June 2004 (invited oral).
• SETAC Europe 14^th Annual Meeting, Prague, Czech Republic, 18-22 April 2004 (oral, colleague; 2 posters, colleague).

2003

• Chemistry in the Oil Industry VIII, Manchester Conference Centre, U.K., 3-5 November 2003 (poster, colleague).
• 21^st International Meeting on Organic Geochemistry, Krakow, Poland, 8-12 September 2003 (2 orals, colleagues; Chair session).
• International Meeting of Analytical Division of the Swiss Chemistry Society, Zurich, Switzerland, 3-5 September 2003 (invited oral).
• 15^th Annual Meeting of the British Organic Geochemical Society, Plymouth, U.K., 8-9 July 2003 (poster, colleague).
• 5^th Agilent Environmental Mass Spectrometry Meeting, Chester, U.K., 19-20 June 2003 (invited oral).
• RSC Postgraduate Industry Tour, London, U.K., 11-13 May 2003 (poster, colleague).
• 1^st International Symposium on Comprehensive Multidimensional Gas Chromatography, Volendam, The Netherlands, 6-7 March 2003 (poster, colleague).

2002

• 3^rd European Meeting on Environmental Chemistry, Geneva, Switzerland, 11-14 December 2002 (2 orals, colleague; poster, colleague).
• William Smith and the Deep Biosphere, Geological Society, Burlington House, U.K., 22-23 October 2002 (oral).
• A.G. Douglas Symposium, Joint Meeting of the Canadian Society for Coal Science and Organic Petrology and The Society for Organic Petrology 19^th TSOP Annual Meeting, The Banff Centre, Alberta, Canada, 31 August-4 September 2002 (invited oral).
• 23^rd International Symposium on the Chemistry of Natural Products, Florence, Italy, 28 July-2 August 2002 (oral, colleague; poster).
• International Symposium of Column Chromatography, Riva del Garda, Italy, 13-17 May 2002 (poster, colleague).
• Organic Contaminants in Soil, Water and Sediment: The Cutting Edge, Reading, U.K., 2 May 2002 (poster, colleague).
• International Workshop on the Application of Normal Phase Fractionation in Effect Directed Identification Studies, The Hague, The Netherlands, 26 April 2002 (poster, colleague).
• SET for Britain: Young Scientists Meeting, The House of Commons, London, U.K., 18 March 2002 (poster, colleague).

2001

• University of Sussex, Department of Environmental and Chemical Sciences, U.K., 1 November 2001 (seminar).
• University of Newcastle, Fossil Fuels Research Group, Newcastle, U.K., 25 September 2001 (seminar).
• 20^th International Meeting on Organic Geochemistry, Nancy, France, 10-14 September 2001 (oral; poster; poster).
• 13^th Annual Meeting of the British Organic Geochemistry Society, Gregynog, Wales, U.K., 23-25 July 2001 (poster).
• University of Bristol: Lecture Series, University of Bristol, Bristol, U.K., 4 June 2001 (invited oral).
• Natural Products Biology (BBSRC Invited Meeting), University of Warwick, Warwick, U.K., 20-21 May 2001 (invited poster).
• 8^th Annual Meeting on the Cutting Edge: Organic Contaminants in Soils Sediment and Water, University of Reading, Reading, U.K., 1 May 2001 (oral).
• European Union of Geosciences, 11^th meeting, Strasbourg, France, 8-12 April 2001 (oral).

2000

• The Royal Society of Chemistry, Industrial Affairs Division: Energy Sector (Chemical Analysis in the Energy Industry), The Royal Society of Chemistry, Burlington House, London, U.K., 21 November 2000 (invited oral).
• 20^th Goldschmidt International Conference on Geochemistry, Oxford, U.K., 3-7 September 2000 (Chairman: Biological Geochemistry).
• Symposium on Biological Chirality, Szeged, Hungary, 27-31 August 2000 (plenary oral, colleague).
• 16^th International Diatom Symposium 2000, Athens, Greece, 25 August-1 September 2000 (poster).
• Gordon Research Conference, New Hampshire U.S.A., 13-18 August 2000 (invited oral).
• 12^th Annual Meeting of the British Organic Geochemistry Society, Bristol U.K., 5-7 July 2000 (oral).
• Norwegian Organic Geochemical Society (NOGS) 7th Biennial Meeting, Stavanger, Norway, 7-9 June 2000 (oral).
• Third SETAC World Congress (Global Environmetal Issues in the 21^st Century: Problems, Causes and Solutions), Brighton, U.K., 21-25 May 2000 (oral, student - Awarded Procter & Gamble Eurocor Prize for best oral or poster presentation by a young scientist).

1999

• Royal Society of Chemistry, Analytical Division Meeting, Warrington, U.K., 11-12 October 1999 (invited oral).
• International meeting on Marine Pollution, Barcelona, Spain, 29 September-1 October 1999 (invited oral).
• 19^th International Meeting on Organic Geochemistry, Istanbul, Turkey, 6-10 September 1999 (Chairman: Biodegradation Processes).
• 19^th International Meeting on Organic Geochemistry, Istanbul, Turkey, 6-10 September 1999 (oral; poster).
• 3^rd Meeting on Progress in Chemical Oceanography, University of Plymouth, Plymouth, U.K., September 1999 (oral, colleague; poster, colleague).
• FACSS conference Vancouver, Canada September 1999 (poster, colleague).
• 17^th Australian & New Zealand Society for Mass Spectrometry Conference, Thredbo Alpine Village, NSW, Australia, (oral, colleague).
• Stable Isotopes in Mass Spectrometry Meeting, University of Exeter, Exeter, U.K., January 1999 (poster).

1998

• 1998 Biodiversity, Biotechnology and Biobusiness Conference, Perth, WA, Australia, 23-27 November, 1998 (oral, colleague).
• Conference Twenty years after Amoco Cadiz, Brest, Brittany France, 15-17 October 1998 (poster, colleague).
• Symposium on Biological Homochirality, Serramazzoni, Modena, Italy, 6-12 September 1998 (oral, colleague).
• Oceanography '98, Southampton, U.K., September 1998 (oral; poster).
• 9^th International Symposium on Marine Natural Products, Townsville, Australia, July 1998 (oral; poster).
• Royal Australian Chemical Institute Lecture, Hobart, Australia, April 1998 (invited oral).
• Royal Australian Chemical Institute Lecture, Launceston, Australia, April 1998 (invited oral).

1997

• 18^th Annual meeting SETAC, San Francisco, U.S.A., 16-20 November 1997 (poster, colleague).
• 18^th International Meeting on Advances in Organic Geochemistry, Maastricht, The Netherlands, 22-26 September 1997 (two posters).
• Department of Environment, Oestrogenic Chemicals in Environment, Leicester, U.K., May 1997 (invited oral).
• American Chemical Society, 213^th International Meeting, San Francisco, U.S.A., April 1997 (invited oral).