A5064394395- Hydrocarbon exploration and reservoir analysis
- Petroleum Processing and Analysis
- Toxic Organic Pollutants Impact
- Enhanced Oil Recovery Techniques
- Environmental Toxicology and Ecotoxicology
- Geology and Paleoclimatology Research
- Analytical Chemistry and Chromatography
- Microbial bioremediation and biosurfactants
- Mass Spectrometry Techniques and Applications
- Atmospheric and Environmental Gas Dynamics
- Microplastics and Plastic Pollution
- Pharmaceutical and Antibiotic Environmental Impacts
- Marine and coastal ecosystems
- Algal biology and biofuel production
- Diatoms and Algae Research
- Metabolomics and Mass Spectrometry Studies
- Isotope Analysis in Ecology
- Methane Hydrates and Related Phenomena
- Effects and risks of endocrine disrupting chemicals
- Recycling and Waste Management Techniques
- Cephalopods and Marine Biology
- Geological Studies and Exploration
- Plant biochemistry and biosynthesis
- Paleontology and Stratigraphy of Fossils
- Analytical chemistry methods development
University of Plymouth
2015-2025
Gannon University
2019
University of Essex
2008
University of Exeter
2007
Plymouth Marine Laboratory
1986-2006
University of York
2006
University of Southampton
2004
Royal Netherlands Institute for Sea Research
2004
Stanford University
2004
Nantes Université
2004
Millions of metric tons plastic are produced annually. Countless large items debris accumulating in marine habitats worldwide and may persist for centuries ([ 1 ][1]–[ 4 ][2]). Here we show that microscopic fragments fibers ([Fig. 1A][3]) also widespread the
Plastic debris litters marine and terrestrial habitats worldwide. It is ingested by numerous species of animals, causing deleterious physical effects. High concentrations hydrophobic organic contaminants have also been measured on plastic collected from the environment, but fate these poorly understood. Here, we examine uptake subsequent release phenanthrene three plastics. Equilibrium distribution coefficients for sorption seawater onto plastics varied more than an order magnitude...
The 18S ribosomal DNA molecular phylogeny and lipid composition of over 120 marine diatoms showed that the capability to biosynthesize highly branched isoprenoid (HBI) alkenes is restricted two specific phylogenetic clusters, which independently evolved in centric pennate diatoms. record C 25 HBI chemical fossils a large suite well-dated sediments petroleum revealed older cluster, composed rhizosolenid diatoms, 91.5 ± 1.5 million years ago (Upper Turonian), enabling an accurate dating pace...
Expansion of the oil sands industry Canada has seen a concomitant increase in amount process water produced and stored large lagoons known as tailings ponds. Concerns have been raised, particularly about toxic complex mixtures water-soluble naphthenic acids (NA) water. To date, no individual NA identified, despite numerous attempts, while toxicity broad classes is interest, often structure-specific, so identification may also be very important. Here we describe chromatographic resolution...
The large volumes, acute toxicity, estrogenicity, and antiandrogenicity of process-affected waters accruing in tailings ponds from the operations Alberta oil sands industries pose a significant task for environmental reclamation. Synchronous fluorescence spectra (SFS) suggest that water (OSPW) may contain aromatic carboxylic acids, which are among potentially environmentally important toxicants, but no such acids have yet been identified, limiting interpretations results estrogenicity other...
Numerous studies have suggested that the toxicity of organic compounds containing at least one carboxylic acid group and broadly classified as “naphthenic acids”, is environmental concern. For example, acute more than 1 billion m3 oil sands process-affected water hormonal activity some offshore produced waters has been attributed to acids. However, experimental evidence for individual acids causing these effects not very forthcoming. Instead, most data gathered from assays incompletely...
Comprehensive two-dimensional gas chromatography−time-of-flight−mass-spectrometry can be used to resolve and identify individual petroleum-derived hydrocarbons in unresolved complex mixtures (UCMs), such as those accumulated by mussels (Mytilus edulis). Mussels exhibiting a range of scope for growth values were collected from sites around the UK coast. Tissue extracts impaired health contained large amounts aromatic hydrocarbon UCMs compared healthy mussels. The (up 125 μg g-1 dry tissue)...
Abstract Concentrations of a highly branched isoprenoid (HBI) diene determined in over 200 sediment samples from the Arctic co-vary with those an HBI monoene (IP 25 ) shown previously to be sedimentary sea ice proxy for Arctic. The same diene, but not IP , occurred nine collected various locations around Antarctica. has been reported Antarctic diatoms and 13 C isotopic compositions two were also consistent origin (δ -5.7 -8.5‰). In contrast, HBIs found phytoplankton did include comprised...
The oils sands industry of Canada produces large volumes process water (OSPW) which is stored in lagoons. OSPW contains complex mixtures somewhat toxic, water-soluble, acid-extractable organic matter sometimes called 'naphthenic acids' (NA). Concerns have been raised over the possible environmental impacts leakage and a need has therefore arisen for better characterisation NA. Recently, we reported first identification numerous individual tricyclic NA by comprehensive two-dimensional gas...