Assessing biodegradation potential of PAHs in complex multi-contaminant matrices. (2008)
Hickman, Zachary A., Swindell, Annika L., Allan, Ian J., Rhodes, Angela H., Hare, Rina, Semple, Kirk T., ...
This study sought to extend validation of a cyclodextrin based extraction method for the assessment of PAH-biodegradation potential to complex multi-contaminant matrices. To this end, four reference...
Stroud, J. L., Rhodes, A. H., Semple, Kirk T., Simek, Z., Hofman, J.
The aim of this paper was to measure the changing desorbable fraction and bioaccessibility of phenanthrene in two different soils with increasing soil-phenanthrene contact time using supercritical...
Linking chemical extraction to microbial degradation of C-14-hexadecane in soil. (2008)
Stroud, Jacqueline L., Paton, Graeme I., Semple, Kirk T.
Chemical extractions have been shown to measure the biodegradable fraction of aromatic in soil; however, there is little research on the chemical prediction of aliphatic hydrocarbon degradation. The...
Risdon, Graeme C., Pollard, Simon J. T., Brassington, Kirsty J., McEwan, Jamie N., Paton, Graeme I., Semple, Kirk T., ...
A sequential ultrasonic extraction method for contaminated soils with weathered hydrocarbons is presented. The method covers the determination of total petroleum hydrocarbons between nC(8) and...
Relationship between cyclodextrin extraction and biodegradation of phenanthrene in soil. (2008)
Rhodes, Angela H., Dew, Nadia M., Semple, Kirk T.
A number of soil extraction techniques have been proposed to determine the microbial degradability of organic contaminants in soil. Exhaustive methods using organic solvents have little relevance to...
Boucard, Tatiana K., McNeill, Charles, Bardgett, Richard D., Paynter, Christopher D., Semple, Kirk T.
Sheep dip formulations containing organophosphates (OPs) or synthetic pyrethroids (SPs) have been widely used in UK, and their spreading onto land has been identified as the most practical disposal...
Pollard, Simon J. T., Hough, Rupert L., Kim, Kye-Hoon, Bellarby, Jessica, Paton, Graeme I., Semple, Kirk T., ...
Level I and II fugacity approaches were used to model the environmental distribution of benzene, anthracene, phenanthrene, 1-methylphenanthrene and benzo[a]pyrene in a four phase biopile system,...
Pollard, Simon J. T., Hough, Rupert L., Kim, Kye-Hoon, Bellarby, Jessica, Paton, Graeme, Semple, Kirk T., ...
Level I and II fugacity approaches were used to model the environmental distribution of benzene, anthracene, phenanthrene, 1-methylphenanthrene and benzo[a]pyrene in a four phase biopile system,...
Pollard, Simon J. T., Hough, Rupert L., Kim, Kye-Hoon, Bellarby, Jessica, Paton, Graeme I., Semple, Kirk T., ...
Level I and II fugacity approaches were used to model the environmental distribution of benzene, anthracene, phenanthrene, 1-methylphenanthrene and benzo[a]pyrene in a four phase biopile system,...
Development of phenanthrene catabolism in natural and artificial soils. (2008)
Rhodes, Angela H., Hofman, Jakub, Semple, Kirk T.
The characteristics of natural soils often vary from those of artificial soil (e.g. OECD), which may lead to substantial differences in the bioavailability of test substances. The aim of this...
Fate and behaviour of phenanthrene in the natural and artificial soils. (2008)
Hofman, Jakub, Rhodes, Angela, Semple, Kirk T.
OECD artificial soil has been used routinely as a standardized substrate for soil toxicity tests. However, can be the fate, behaviour and effects of contaminants in artificial soil extrapolated to...
Impact of black carbon in the extraction and mineralization of phenanthrene in soil. (2008)
Rhodes, Angela H., Carlin, Alisdair, Semple, Kirk T.
During the past century, increased biomass burning and fossil fuel consumption have drastically increased the input of black carbon (BC) into the environment, and that has been shown to influence the...
Semple, Kirk T., Doick, Kieron J., Wick, Lukas Y., Harms, Hauke
There has been and continues to be considerable scientific interest in predicting bioremediation rates and endpoints. This requires the development of chemical techniques capable of reliably...
Bioavailability of pollutants and soil remediation. (2007)
Ortega-Calvo, Jose-Julio, Ball, William P., Schulin, Rainer, Semple, Kirk T., Wick, Lukas Y.
Papadopoulos, Apostolos, Reid, Brian J., Semple, Kirk T.
Traditionally, solvent extractions are routinely used in the assessment of contaminated land. However, vigorous solvent extractions only give total concentrations rather than that relating to the...
Allan, Ian J., Semple, Kirk T., Hare, Rina, Reid, Brian J.
This work aimed to evaluate the relative contribution of soil catabolic activity, contaminant bioaccessibility, and nutrient levels on the biodegradation of field-aged polycyclic aromatic...
Hua, Guoxiong, Broderick, John, Semple, Kirk T., Killham, Ken, Singleton, Ian
Synchronous fluorescence spectroscopy (SFS) was directly applied to rapidly quantify selected polycyclic aromatic hydrocarbons (PAHs: benzo[a]pyrene and pyrene) in aqueous...
Kurt-Karakus, Perihan Binnur, Stroud, Jacqueline L., Bidleman, Terry, Semple, Kirk T., Jantunen, Liisa, Jones, Kevin C.
Variability in the enantioselective degradation of chiral organochlorine pesticides (alpha-HCH, cis- and trans-chlordane (CC and TC), and o,p'-DDT)in the field and laboratory was investigated....
Importance of chemical structure on the development of hydrocarbon catabolism in soil. (2007)
Stroud, Jacqueline L., Paton, Graeme I., Semple, Kirk T.
A soil was amended with C-14-analogues of naphthalene, phenanthrene, pyrene, B[a]P or hexadecane at 50 mg kg(-1) and the development of catabolic activity was assessed by determining the rate and...
Weathered Hydrocarbon Wastes: A Risk Management Primer (2007)
Brassington, Kirsty J., Hough, Rupert L., Paton, Graeme I., Semple, Kirk T., Risdon, Graeme C., Crossley, Jane, ...
We provide a primer and critical review of the characterization, risk assessment, and bioremediation of weathered hydrocarbons. Historically the remediation of soil contaminated with petroleum...
Stroud, J. L., Paton, G. I., Semple, Kirk T.
Aliphatic hydrocarbons make up a substantial portion of organic contamination in the terrestrial environment. However, most studies have focussed on the fate and behaviour of aromatic contaminants in...
Rhodes, Angela H., Owen, Susan M., Semple, Kirk T.
It has been suggested that monoterpenes emitted within the soil profile, either by roots or by decaying biomass, may enhance the biodegradation of organic pollutants. The aim of this study was to...
Owen, Susan M., Clark, Stuart, Pompe, Matevz, Semple, Kirk T.
Catabolism of a C-14-labelled volatile monoterpene compound (geraniol) to (CO2)-C-14 was investigated in soils taken from the rhizosphere at distances up to 200 cm from the trunks of three small...
Impact of electrokinetic remediation on microbial communities within PCP contaminated soil. (2007)
Lear, G., Harbottle, M. J., Sills, G., Knowles, C. J., Semple, Kirk T., Thompson, I. P.
Electrokinetic techniques have been used to stimulate the removal of organic pollutants within soil, by directing contaminant migration to where remediation may be more easily achieved. The effect of...
Papadopoulos, Apostolos, Paton, Graeme I., Reid, Brian J., Semple, Kirk T.
Biodegradation has been identified as a major loss process for organic contaminants in soils and, as a result, microbial strategies have been developed for the remediation of contaminated land....
Fenlon, Katie A., Jones, Kevin C., Semple, Kirk T.
The behaviour of pesticides in the soil is a complex issue and is controlled by the physical, chemical and biological properties of the soil. The ability of microorganisms to degrade pesticides is...
Semple, Kirk T., Allan, I.J., Arya, R., Reid, B.J.
In this study, an aqueous-based hydroxypropyl-β-cyclodextrin (HPCD) extraction technique was assessed for its capacity to determine the microbially degradable fraction of mono- and polycyclic...
Doick, Kieron J., Clasper, Paula J., Urmann, Karina, Semple, Kirk T.
In this study, an aqueous-based hydroxypropyl-β-cyclodextrin (HPCD) extraction technique was assessed for its capacity to determine the microbially degradable fraction of mono- and polycyclic...
Allan, Ian J., Semple, Kirk T., Hare, Rina, Reid, Brian J.
In this study, an aqueous-based hydroxypropyl-beta-cyclodextrin (HPCD) extraction technique was assessed for its capacity to determine the microbially degradable fraction of mono- and polycyclic...
Doick, Kieron J., Clasper, Paula J., Urmann, Karina, Semple, Kirk T.
There is currently considerable scientific interest in finding a chemical technique capable of predicting bioavailability; non-exhaustive extraction techniques (NEETs) offer such potential....
Semple, Kirk T., Dew, N. M., Doick, Keiron J., Rhodes, A. H.
The aim of this study was to characterize the behaviour of a PAH-degrading bacterium to determine whether mineralization plateaus as a result of substrate removal, a decrease in microbial activity or...
Does mineralisation predict the microbial availability of organic chemicals in soil? (2006)
Semple, Kirk T., Dew , Nadia M., Doick , Kieron J., Rhodes , Angela H.
The aim of this study was to characterize the behaviour of a PAH-degrading bacterium to determine whether mineralization plateaus as a result of substrate removal, a decrease in microbial activity or...
Macleod, C. J. A., Semple, Kirk T.
The influence of pyrene added in a single application (0, 50, 100 and 200 mg kg−1) was investigated in multiple applications (1 × 50, 2 × 50 and 4 × 50 mg kg−1) on the evolution of catabolic...
Macleod, Christopher J. A., Semple, Kirk T.
The influence of pyrene added in a single application (0, 50, 100 and 200 mg kg(-1)) was investigated in Multiple applications (1 X 50, 2 X 50 and 4 X 50 mg kg(-1)) on the evolution of catabolic...
Biological tools for the assessment of contaminated land: applied soil ecotoxicology. (2005)
Paton, G. I., Killham, K., Weitz, H. J., Semple, Kirk T.
Chemical analysis alone is inadequate for comprehensively assessing the impact of soil pollution on biota. The term bioavailability can only be applied in a context specific to a target biological...
Stokes, Joanna D., Paton, G. I., Semple, Kirk T.
Soils contaminated with organic chemicals are now widespread in industrialized and developing countries, and the risk assessment and remediation of such contaminated sites is a priority. However,...
Semple, Kirk T., Dew , N. M., Doick , K. J.
When assessing the potential of a contaminated site for bioremediation, it is desirable to know how much of the contaminant(s) is available for microbial degradation, thus allowing the likelihood of...
Martin, Francis L., Piearce, Trevor G., Hewer, Alan, Phillips, David H., Semple, Kirk T.
There is a need to develop risk biomarkers during the remediation of contaminated land. We employed the earthworm, Aporrectodea longa (Ude), to determine whether genotoxicity measures could be...
Dew, Nadia M., Paton, Graeme I., Semple, Kirk T.
This study investigated the use of an aqueous hydroxypropyl-p-cyclodextrin (HPCD) shake extraction in predicting microbial mineralisation and total loss of [3-C-14]phenyldodecane associated activity...
Optimising the biopiling of weathered hydrocarbons within a risk management framework. (2005)
Hough, Rupert L., Brassington, Kirsty J., Sinke, Anja, Crossley, Jane, Paton, Graeme I., Semple, Kirk T., ...
Thirty years of research into petroleum microbiology and bioremediation have bypassed an important observation – that many hydrocarbon contaminated sites posing potential risks to human health...
Semple, Kirk T., Burauel , P., Doick , K. J., Jones, K. C.
Organic matter is considered to be the single most important factor limiting availability and mobility of persistent organic pollutants (POPs) in soil. This study aimed to characterize the...
Doick, Keiron J., Burauel, Peter, Jones, Kevin C., Semple, Kirk T.
Sequestration of hydrophobic organic contaminants (HOCs) in soils limits chemical and biological availability. Concerns exist regarding the long-term stability of sequestered contaminants in the...
Stokes, Joanna D., Wilkinson, Anne, Reid, Brian J., Jones, Kevin C., Semple, Kirk T.
This study investigated the use of an aqueous hydroxypropyl-p-cyclodextrin (HPCD) shake extraction to predict the degree of microbial degradation of polycyclic aromatic hydrocarbons (PAHs) in soils....
Behaviour of environmentally aged PAH and PCB residues in soil. (2005)
Doick, Kieron J., Klingelmann, Eva, Burauel, Peter, Jones, Kevin C., Semple, Kirk T.
Laboratory studies are useful for understanding the behavior of persistent organic pollutants (POPs) in soil, although such investigations do not always relate directly to field conditions. Outdoor...
Semple, Kirk T., Doick , K. J., Jones , K. C., Klingelmann , E.
Laboratory studies are useful for understanding the behavior of persistent organic pollutants (POPs) in soil, although such investigations do not always relate directly to field conditions. Outdoor...
Pollard, Simon J. T., Hough, Rupert L., Brassington, Kirsty J., Sinke, Anja, Crossley, Jane, Paton, Graeme I., ...
Thirty years of research into petroleum microbiology and bioremediation have bypassed an important observation – that many hydrocarbon contaminated sites posing potential risks to human health...
Effects of sheep dip pesticides on biofilms involved in secondary sewage treatment. (2005)
Jones, Keith, Dawson, C., Heaton, Joanna, Mason, R. J., Waring, S., SemplE, Kirk T.
Boucard, Tatiana K., Bardgett, Richard D., Jones, Kevin C., Semple, Kirk T.
This study investigated the fate and behaviour of [UL-14C] 2,4-dichlorophenol (DCP) in planted (Lolium perenne L.) and unplanted soils over 57 days. Extractability of [UL-14C] 2,4-DCP associated...
Boucard, Tatiana K., Bardgett, Richard D., Jones, Kevin C., Semple, Kirk T.
This study investigated the fate and behaviour of [UL-C-14] 2,4-dichlorophenol (DCP) in planted (Lolium perenne L.) and unplanted soils over 57 days. Extractability of [UL-C-14] 2,4-DCP associated...
Mordaunt, Catriona J., Gevao, Bondi, Jones, Kevin C., Semple, Kirk T.
Six major use pesticides (Atrazine, Dicamba, Isoproturon, Lindane, Paraquat and Trifluralin) with differing physico-chemical properties were evaluated for the significance of `bound' or non...
Gevao, Bondi, Jones, Kevin C., Semple, Kirk T.
The role of native soil microorganisms in the formation and release of non-extractable C-14-residues, previously treated with C-14- Dicamba, was investigated to examine their significance to the...
Doick, K. J., Burauel, P., Jones, K. C., Semple, Kirk T.
Organic matter is considered to be the single most important factor limiting availability and mobility of persistent organic pollutants (POPs) in soil. This study aimed to characterize the...
Doick, K. J., Dew, N. M., Semple, Kirk T.
When assessing the potential of a contaminated site for bioremediation, it is desirable to know how much of the contaminant(s) is available for microbial degradation, thus allowing the likelihood of...
Doick, Keiron J., Klingelmann, Eva, Burauel, Peter, Jones, Kevin C., Semple, Kirk T.
Laboratory studies are useful for understanding the behavior of persistent organic pollutants (POPs) in soil, although such investigations do not always relate directly to field conditions. Outdoor...
Langdon, C. J., Winters, C., Sturzenbaum , S. R., Morgan, A. J., Charnock, J. M., Meharg, A. A., ...
Although earthworms have been found to inhabit arsenic-rich soils in the U.K., the mode of arsenic detoxification is currently unknown. Biochemical analyses and subcellular localization studies have...
Patterson, Colin J., Semple, Kirk T., Paton, Graeme I.
Non-exhaustive extraction techniques (NEETs) have been shown to measure the putatively bioavailable fraction of hydrophobic compounds in soil. To date, these studies have only considered...
Martin, Francis L., Semple, Kirk T.
The effects of many environmental exposures to either single contaminants or to mixtures still remain to be properly assessed in ecotoxicological and human toxicological settings. Such assessments...
Burbery, L, Cassiani, G, Andreotti, G, Ricchiuto, T, Semple, Kirk T.
Single-well reactive tracer tests, such as the push-pull test are useful tools for characterising in-situ bioattenuation processes in contaminated aquifers. However, the analytical models that are...
Reid, Brian J., Stokes, Joanna D., Jones, Kevin C., Semple, Kirk T.
A study was conducted to investigate the effect of hydroxypropyl-beta-cyclodextrin (HPCD) on the aging and biodegradation of phenanthrene (PHE) in soil. Soil was spiked with PHE at 25...
Boucard, Tatiana K., Parry, Jackie D., Jones, Keith, Semple, Kirk T.
Sheep dipping with organophosphate or synthetic pyrethroid-based formulations is still widely used by farmers in the UK to control ectoparasites and results in 175–220 million litres of spent sheep...
Martin, Francis L., Semple, Kirk T.
Speakers: John Ashby (Syngenta CTL, UK), Peter A.Behnisch (Eurofins GfA, Germany), Paul L.Carmichael (Unilever Colworth, UK), Curtis C.Harris (National Cancer Institute, USA), Kevin C.Jones...
Doick, Keiron J., Lee, Philip H., Semple, Kirk T.
Laboratory based studies on the fate of organic contaminants in soil typically requires the test compound(s) to be spiked into the test medium. Consequently, such studies are inherently dependant on...
Semple, Kirk T., Morriss, A. W. J., Paton, G. I.
Soils represent a major sink for organic xenobiotic contaminants in the environment. The degree to which organic chemicals are retained within the soil is controlled by soil properties, such as...
The development of phenanthrene catabolism in soil amended with transformer oil. (2003)
Lee, Philip H., Doick, Keiron J., Semple, Kirk T.
Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental contaminants frequently associated with light non-aqueous-phase liquids (LNAPLs) in soil. Microbial degradation comprises a major...
Macleod, Christopher J. A., Semple, Kirk T.
In this study, temporal changes in the extractability of C-14-pyrene, at native concentrations, were followed in two soils with differing organic matter contents, under sterile and non-sterile...
Macleod, Christopher J. A., Semple, Kirk T.
In this study, temporal changes in the extractability of 14C-pyrene, at native concentrations, were followed in two soils with differing organic matter contents, under sterile and non-sterile...
Inherited resistance to arsenate toxicity in two populations of Lumbricus rubellus. (2003)
Langdon, Caroline J., Piearce, Trevor G., Meharg, Andrew A., Semple, Kirk T.
No unequivocal evidence exists of genetically inherited resistance to metals/metalloids in field populations of earthworms. We studied cocoon production in adult Lumbricus rubellus Hoffmeister...
Interactions between earthworms and arsenic in the soil environment : a review. (2003)
Langdon, Caroline J., Piearce, Trevor G., Meharg, Andrew A., Semple, Kirk T.
Chemical pollution of the environment has become a major source of concern. In particular, many studies have investigated the impact of pollution on biota in the environment. Studies on metalliferous...
Arsenic speciation in the earthworms Lumbricus rubellus and Dendrodrilus rubidus. (2003)
Langdon, Caroline J., Piearce, Trevor G., Feldmann, Jörg, Semple, Kirk T., Meharg, Andrew A.
Two species of earthworm, Lumbricus rubellus Hoffmeister and Dendrodrilus rubidus (Savigny) collected from an arsenic-contaminated mine spoil site and an uncontaminated site were investigated for...
Nonextractable pesticide residues in soil. (2003)
Gevao, Bondi, Jones, Kevin C., Semple, Kirk T., Craven, Andrew, Burauel, Peter
Doick, Keiron J., Semple, Kirk T.
Contamination of soil by polycyclic aromatic hydrocarbons is frequently associated with non-aqueous-phase liquids. Measurement of the catabolic potential of a soil or determination of the...
Piearce, Trevor G., Langdon, Caroline J., Meharg, Andrew A., Semple, Kirk T.
Lumbricus rubellus Hoffmeister, inhabiting soil at the 19th century Devon Great Consols mine at Tavistock, Devon, UK, show high tolerance to Cu- and As-toxicity and frequently have a striking yellow...
The adaptation of two similar soils to pyrene catabolism. (2002)
Macleod, Christopher J. A., Semple, Kirk T.
The development of pyrene catabolic activity was assessed in two similar soils (pasture and woodland) amended with 100 mg pyrene kg(-1). In the pasture and woodland soils, significant mineralisation...
Macleod, Christopher J. A., Semple, Kirk T.
The development of pyrene catabolic activity was assessed in two similar soils (pasture and woodland) amended with 100 mg pyrene kg−1. In the pasture and woodland soils, significant mineralisation...
Johnson, D. L., Jones, Keith C., Langdon, Caroline J., Piearce, Trevor G., Semple, Kirk T.
In this study, the earthworm, Aporrectodea longa, was used as a model soil organism to assess the impact of ageing upon the bioavailability of polycyclic aromatic hydrocarbons (PAHs) in soil. The...
Reid, Brian J., Fermor, Terry R., Semple, Kirk T.
This paper describes the induction of phenanthrene-catabolism within Phase II mushroom compost resulting from its incubation with (1) phenanthrene, and (2) PAH-contaminated soil. Respirometers...
Langdon, Caroline J., Meharg, Andrew A., Feldmann, J., Balgar, T., Charnock , John, Farqhar, Morag, ...
In this study, the earthworm, Aporrectodea longa, was used as a model soil organism to assess the impact of ageing upon the bioavailability of polycyclic aromatic hydrocarbons (PAHs) in soil. The...
Artz, Rebekka R. E., Semple, Kirk T., Killham, Ken, Prosser, Jim I., Paton, Graeme I.
The potential for natural attenuation of hydrocarbons in oily drill cuttings from the seabed beneath a North Sea oil platform was investigated. The study focused on the anaerobic degradation of...
Langdon, Caroline J., Piearce, Trevor G., Meharg, Andrew A., Semple, Kirk T.
Two arsenic and heavy metal–contaminated mine spoil sites, at Carrock Fell, Cumbria, United Kingdom, and Devon Great Consols Mine, Devon, United Kingdom, have been found to support populations of...
Langdon, Caroline J., Piearce, Trevor G., Meharg, Andrew A., Semple, Kirk T.
Two arsenic- and heavy metal-contaminated mine-spoil sites, at Carrock Fell, Cumbria and Devon Great Consols Mine, Devon, were found to support populations of the earthworms Lumbricus rubellus...
Semple, Kirk T., Reid, Brian J., Fermor, T. R.
Chemical pollution of the environment has become a major source of concern. Studies on degradation of organic compounds have shown that some microorganisms are extremely versatile at catabolizing...
Reid, Brian J., MacLeod, Christopher J. A., Lee, Philip H., Morriss, Alistair W. J., Stokes, Joanna D., Semple, Kirk T.
This paper describes the validation and application of a simple flask-based C-14-respirometer system designed to assess mineralisation of C-14-labelled substrates under defined conditions. Validation...
Bioavailability of nonextractable (bound) pesticide residues to earthworms. (2001)
Gevao, Bondi, Mordaunt, Catriona, Semple, Kirk T., Piearce, Trevor G., Jones, Keith C.
There is an ongoing debate regarding whether nonextractable (bound) pesticide residues in soils are occluded or may remain bioavailable in the long term in the environment. This study investigated...
Influence of contact time on extractability and degradation of pyrene in sons. (2000)
Macleod, Christopher J. A., Semple, Kirk T.
In this study, temporal changes in extractability of [C-14]pyrene were followed in two soils with differing organic matter contents under sterile and nonsterile conditions over 24 weeks. The...
Impact of synthetic pyrethroid-sheep dip on the microflora present in animal slurries. (2000)
Semple, Kirk T., Hughes, P., Langdon, C. J., Jones, Keith
The chemical constituents of sheep dip in the UK are currently changing from organophosphate-based to synthetic pyrethroid-based insecticides. As a result, changes are also being made to the methods...
Reid, Brian J., Stokes, Joanna D., Jones, Kevin C., Semple, Kirk T.
Traditionally, soil extraction techniques have been concerned with the determination of ``total'' organic contaminant concentrations, following an ``exhaustive'' extraction. However, in light of the...
Reid, Brian J., Jones, Kevin C., Semple, Kirk T.
It has been observed that as soil-pollutant contact time increases, pollutant bioavailability and extractability decreases. This phenomenon has been termed `ageing'. Decreased chemical extractability...
Introductory remarks to the special issue. (2000)
Jones, Kevin C., Gevao, B., Mordaunt, C., Northcott, G., Semple, Kirk T.
Bound pesticide residues in soils: a review. (2000)
Gevao, B., Semple, Kirk T., Jones, Kevin C.
This article is a review of the current state of knowledge regarding the formation and biological/environmental significance of bound pesticide residues in soils. We begin by defining various terms...
Impact of electrical cable insulating oil on the mineralisation of [l-C-14]glucose in soil. (2000)
Reid, Brian J., Lee, Philip H., Macleod, Christopher J. A., Morriss, Alistair W. J., Patel, Dax, Semple, Kirk T.
Subsurface high voltage electric cables are commonly insulated using dodecylbenzene in combination with mineral oil. This work assessed the impact of increasing concentrations of cable insulating oil...
Resistance to arsenic-toxicity in a population of the earthworm Lumbricus rubellus. (1999)
Langdon, Caroline J., Piearce, Trevor G., Black, S., Semple, Kirk T.
Specimens of the earthworms Lumbricus terrestris L. and L. rubellus Hoffmeister from an uncontaminated site rapidly deteriorated in condition when kept in spoil rich in metal contaminants and...
Methods for the analysis of PCBs in human food, faeces and serum. (1999)
Juan, C. Y., Thomas, G. O., Semple, Kirk T., Jones, Kevin C.
A method was developed to determine trace concentrations of a range of individual PCB congeners in biological samples (serum, food and faeces) using GC-MS, to prepare a mass balance of PCBs in...
Methods for the analysis of PCBs in human food, faeces and serum. (1999)
Thomas, Gareth O., Semple, Kirk T., Jones, Kevin C.
A method was developed to determine trace concentrations of a range of individual PCB congeners in biological samples (serum, food and faeces) using GC-MS, to prepare a mass balance of PCBs in...
Biodegradation of aromatic compounds by microalgae. (1999)
Semple, Kirk T., Cain, Ronald B., Schmidt, Stefan
The microbial degradation of aromatic pollutants has been well characterized over a period of more than 30 years. The microbes of most interest have been bacteria and fungi. Only relatively recently...
Bioremediation potential of PAHs in compost. (1999)
Reid, Brian J., Jones, Kevin C., Semple, Kirk T., Fermor, Terry R.
This study investigated the potential for Phase 2 mushroom compost to degrade phenanthrene (a representative PAH) in both slurry and soil systems. Initially, induction of catabolic ability within the...
Bioavailability of cable insulating oil to soil biota. (1999)
MacLeod, Christopher J. A., Lee, Philip H., Reid, Brian J., Dzirasa, K., Semple, Kirk T., Patel, D., ...
This study investigated the interactions between cable insulating oil and the soil microflora and macrofauna in freshly-spiked and in aged soils in the laboratory. Studies were carried out at two...
Can bioavailability of PAHs be assessed by a chemical means? (1999)
Reid, Brian J., Jones, Kevin C., Semple, Kirk T.
A method is presented for extracting PAHs from contaminated soil using aqueous solutions of hydroxypropyl-beta-cyclodextrin (HPCD). The procedure enables elucidation of ageing trends and illustrates...
Temporal chances in the bioavailability of PAHs in soils. (1999)
Semple, Kirk T., Stokes, J., Reid, Brian J.
A study was conducted to investigate the ageing of phenanthrene in soil, and in particular how the ageing process was influenced by the presence and concentration of hydroxypropyl-beta-cyclodextrin...
Assessment of acute PAH toxicity using prokaryote biosensors. (1999)
Reid, Brian J., MacLeod, Christopher J. A., Semple, Kirk T., Weitz, H. J., Paton, G. I.
The aim of this study was to assess the acute toxicity of phenanthrene, pyrene and benzo[a]pyrene using fur-marked bacterial biosensors. Standard solutions of phenanthrene, pyrene and benzo[a]pyrene...
The fate of chlorinated organic pollutants in a reed-bed system. (1999)
MacLeod, Christopher J. A., Reid, Brian J., Semple, Kirk T.
A laboratory-based microcosm study was carried out to investigate the fate of [UL-C-14] 1,2-dichlororoethane and [UL-C-14]chlorobenzene in the presence and absence of reeds (Phragmites sp.),...
Reid, Brian J., Semple, Kirk T., Macleod, Christopher J., Weitz, Hedda J., Paton, Graeme I.
The aim of this study was to assess the acute toxicity of polycyclic aromatic hydrocarbons using lux-marked bacterial biosensors, Standard solutions of phenanthrene, pyrene and benzo[a]pyrene were...
Reid, Brian J., Northcott, Grant L., Jones, Kevin C., Semple, Kirk T.
The purpose of this study was to assess the suitability of various spiking procedures for the introduction of persistent organic pollutants (POPs) into soil environments. C-14-radiolabeled analogues...
Factors affecting the mineralization of [U-C-14]benzene in spent mushroom substrate}. (1998)
Semple, Kirk T., Watts, Ngaire U., Fermor, Terry R.
The degradation of benzene in pasteurized spent mushroom substrate (SMS) was assessed. Following a 3 month enrichment in the presence of a variety of BTEX compounds, the extent of [U-C-14]benzene...
Influence of temperature on the mineralisation of [UL-14C]benzene in spent mushroom compost. (1998)
Semple, Kirk T., Watts, Ngaire U., Fermor, Terry R.
The degradation of benzene in pasteurized spent mushroom substrate (SMS) was assessed. Following a 3 month enrichment in the presence of a variety of BTEX compounds, the extent of [U-14C]benzene...
Heterotrophic growth on phenolic mixtures by Ochromonas danica. (1998)
Because phenols are one of the most common groups of organic pollutants in the aquatic environment, heterotrophic growth-linked biodegradation of phenol and its methylated homologues by the...
Enhanced mineralization of UL-C-14-pentachlorophenol by mushroom composts. (1997)
Semple, Kirk T., Fermor, T. R.
Composting is an aerobic process which allows the rapid proliferation of a variety of microbial groups such as aerobic actinomycetes, bacilli and fungi. Waste mushroom compost is readily available as...
Degradation of phenol and its methylated homologues by Ochromonas danica. (1997)
Semple, Kirk T., Cain, Ronald B.
Phenols are one of the most common groups of organic environmental pollutants. In this study, the catabolic versatility of the eukaryotic alga Ochromonas danica (CCAP 933/2B) to degrade mixtures of,...
Biodegradation of phenols by the alga Ochromonas danica. (1996)
Semple, Kirk T., Cain, Ronald B.
The eukaryotic alga Ochromonas danica, a nutritionally versatile, mixotrophic chrysophyte, grew on phenol as the sole carbon source in axenic culture and removed the phenol carbon from the growth...
Organic chemicals in contaminated land : analysis, significance and research priorities. (1996)
Jones, Kevin C., Alcock, Ruth E., Johnson, D. L., Semple, Kirk T., Woolgar, P. J.
Metabolism of phenols by Ochromonas-danica. (1995)
Semple, Kirk T., Cain, Ronald B.
This study investigated the catabolic potential of a eukaryotic alga to degrade one of the most common organic pollutants, phenol. The alga, Ochromonas danica (993/28), was selected for study after...