Research Topics
| Derek C G MuirSummaryCountry: Canada Publications
| Collaborators
|
Detail Information
Publications
Contaminants in Canadian arctic biota and implications for human health: conclusions and knowledge gapsDerek C G Muir
National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON, Canada L7R 4A6
Sci Total Environ 351:539-46. 2005..Application of this information in international forums to reduce anthropogenic emissions of contaminants to the environment is also discussed...- Are there other persistent organic pollutants? A challenge for environmental chemistsDerek C G Muir
Water Science and Technology Directorate, Environment Canada, Burlington, Ontario, Canada
Environ Sci Technol 40:7157-66. 2006..However, to improve these predictions data on emissions from end use are needed to refine environmental fate predictions, and analytical methods may need to be developed... - Poly and perfluorinated carboxylates in North American precipitationBrian F Scott
Aquatic Ecosystem Protection Research Division, Environment Canada, 867 Lakeshore Road, Burlington, Ontario, Canada
Environ Sci Technol 40:7167-74. 2006..S. sites indicate highly populated urban areas in the New York to Washington corridor as the main sources of PFOA, although low PFOA levels associated with air masses coming off the Atlantic Ocean imply multiple sources... - Fractionation and bioaccumulation of perfluorooctane sulfonate (PFOS) isomers in a Lake Ontario food webMagali Houde
Aquatic Ecosystem Protection Research Division, Water Science and Technology Directorate, Environment Canada, Burlington, Ontario, Canada
Environ Sci Technol 42:9397-403. 2008..3 +/- 0.17 to 2.6 +/- 0.51), whereas dimethyl-PFOS showed no biomagnification. The results illustrate the important influence of molecular structure on the bioaccumulation of perfluoroalkyl sulfonates... - Target tissue selectivity and burdens of diverse classes of brominated and chlorinated contaminants in polar bears (Ursus maritimus) from East GreenlandWouter A Gebbink
Science and Technology Branch, National Wildlife Research Centre, Environment Canada, Carleton University, Ottawa, Ontario K1A OH3, Canada
Environ Sci Technol 42:752-9. 2008..MeO and OH groups). The tissue- and blood-specific accumulation (or retention) among organohalogen classes indicates that exposure and any potential contaminant-mediated effects in these polar bears are likely tissue or blood specific... - Pesticides in western Canadian mountain air and soilGillian L Daly
Department of Chemistry and Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario, Canada
Environ Sci Technol 41:6020-5. 2007..Highest pesticide concentrations are thus found intemperate mountain soils that are rich in organic matter and receive large amounts of cold precipitation... - Tissue-specific congener composition of organohalogen and metabolite contaminants in East Greenland polar bears (Ursus maritimus)Wouter A Gebbink
National Wildlife Research Centre, Science and Technology Branch, Environment Canada, Department of Chemistry, Carleton University, Ottawa, Ontario K1S 5B6, Canada
Environ Pollut 152:621-9. 2008..Our findings suggest that different congener pattern exposures to these classes of contaminants should be considered with respect to potential target tissue-specific effects in East Greenland polar bears... - Organochlorine pesticides in the soils and atmosphere of Costa RicaGillian L Daly
Department of Chemistry, University of Toronto at Scarborough, 1265 Military Trail, Toronto, Ontario, Canada
Environ Sci Technol 41:1124-30. 2007..The study demonstrates an approach for quickly evaluating the spatial distribution of OCPs in an understudied area, identifying regionally important contaminants and areas of elevated concentrations... 
Regional contamination versus regional dietary differences: understanding geographic variation in brominated and chlorinated contaminant levels in polar bearsMelissa A McKinney
Ecotoxicology and Wildlife Health Division, Science and Technology Branch, Environment Canada, Ottawa, Ontario K1A 0H3, Canada
Environ Sci Technol 45:896-902. 2011..Understanding diet/food web factors is important to accurately interpret contaminant trends, particularly in a changing Arctic...- Comparison of concentrations and stereoisomer ratios of mecoprop, dichlorprop and metolachlor in Ontario streams, 2006-2007 vs. 2003-2004Perihan Binnur Kurt-Karakus
Center for Atmospheric Research Experiments, Environment Canada, 6248 Eighth Line, Egbert, L0L 1N0 ON, Canada
Environ Pollut 158:1842-9. 2010..Low concentrations were associated with lower and more variable SFs, suggesting mixed input of racemic and S-metolachlor or stereoselective degradation... - Biomagnification of perfluoroalkyl compounds in the bottlenose dolphin (Tursiops truncatus) food webMagali Houde
Department of Environmental Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
Environ Sci Technol 40:4138-44. 2006..The results indicate that using plasma and liver PFC concentrations as surrogate to whole body burden in a top marine predator overestimates the BMFs and TMFs... - Mercury and other trace elements in a pelagic Arctic marine food web (Northwater Polynya, Baffin Bay)Linda M Campbell
National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, Ontario, Canada, L7R-4A6
Sci Total Environ 351:247-63. 2005.... - Spatial trends of perfluoroalkyl compounds in ringed seals (Phoca hispida) from the Canadian ArcticCraig M Butt
Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
Environ Toxicol Chem 27:542-53. 2008..After adjusting for delta13C values, concentrations of most PFCs generally were statistically greater in the Grise Fiord, Qikiqtarjuaq, Arviat, and Nain populations... - Polychlorinated biphenyls and hydroxylated polychlorinated biphenyls in plasma of bottlenose dolphins (Tursiops truncatus) from the Western Atlantic and the Gulf of MexicoMagali Houde
Department of Environmental Biology, University of Guelph, Ontario, Canada
Environ Sci Technol 40:5860-6. 2006..Results from this study show that OH-PCB are important environmental contaminants in dolphins and suggest that PCBs, decades after their ban, may still constitute a threat to wildlife... - Detection of a cyclic perfluorinated acid, perfluoroethylcyclohexane sulfonate, in the Great Lakes of North AmericaAmila O De Silva
Water Science and Technology Directorate, Environment Canada, 867 Lakeshore Road, Burlington, ON Canada L7R 4A6
Environ Sci Technol 45:8060-6. 2011..5 for PFOS. It is not certain whether the fish-water BAF for PFECHS is an overestimate due to the influence of precursor biotransformation. Further studies are recommended to understand the extent of PFECHS contamination... - Distribution of perfluorocarboxylate isomers in select samples from the North American environmentAmila O De Silva
University of Toronto, Department of Chemistry, Toronto, Ontario, Canada
Environ Toxicol Chem 28:1801-14. 2009..The presence of longer-chain isopropyl isomers may be preliminary evidence of isopropyl fluorinated organic precursors... - Seasonally resolved concentrations of persistent organic pollutants in the global atmosphere from the first year of the GAPS studyKarla Pozo
Atmospheric Science and Technology Directorate, Environment Canada, 4905 Dufferin Street, Toronto, Ontario, Canada
Environ Sci Technol 43:796-803. 2009..Globally resolved data will also foster the development and validation of global transport models for POPs, and the investigation of seasonal and interannual trends in concentrations of POPs in the global atmosphere... - Enantiomer-specific accumulation of PCB atropisomers in the bowhead whale (Balaena mysticetus)Paul F Hoekstra
Department of Environmental Biology, University of Guelph, Ontario, Canada
Environ Sci Technol 36:1419-25. 2002..Results suggest that enantioselective accumulation of PCB-91, 95, and 149 is influenced by PCB concentrations, age, and/or the modification of an uncharacterized stereoselective process (or processes) during sexual maturity... - Hydroxylated PCBs and other chlorinated phenolic compounds in lake trout (Salvelinus namaycush) blood plasma from the Great Lakes regionLinda M Campbell
National Water Research Institute, Environment Canada, Burlington, Ontario L7R 4A6, Canada
Environ Sci Technol 37:1720-5. 2003..3 and 27.7 pg/g), and 4'-OH-CB208 (24.5 and 34.7 pg/g) were found in lake trout from Lake Ontario and Lake Superior, respectively. Future studies to delineate the sources and impacts of CPCs in the Great Lakes catchment are needed... - Polymeric brominated flame retardants: are they a relevant source of emerging brominated aromatic compounds in the environment?Bruno Gouteux
Aquatic Ecosystem Protection Research Division, Environment Canada, Burlington, ON, Canada
Environ Sci Technol 42:9039-44. 2008..However, these model predictions suffered from a lack of information on the actual use of polymeric BFRs. Hence, further work is needed to assess the release of potentially persistent brominated aromatic compounds from polymeric BFRs... - Toward a global network for persistent organic pollutants in air: results from the GAPS studyKarla Pozo
Science and Technology Branch, Environment Canada, Toronto, Ontario
Environ Sci Technol 40:4867-73. 2006..GM concentrations (pg/m3) were 17 for PCBs and 4 for PBDEs. Sampling under GAPS will continue and will eventually allow seasonality effects and longer-term temporal and spatial trends to be evaluated... - Metolachlor and atrazine in the great lakesPerihan B Kurt-Karakus
Science and Technology Branch, Environment Canada, 867 Lakeshore Road, Burlington, L7R 4A6, ON, Canada
Environ Sci Technol 44:4678-84. 2010..The lower SFs in lakes suggest in-lake stereoselective processing of metolachlor or hold-up of older racemic metolachlor residues... - Perfluoroalkyl contaminants in Lake Ontario Lake Trout: detailed examination of current status and long-term trendsSarah B Gewurtz
Environment Canada, Water Science and Technology Directorate, 867 Lakeshore Road, Burlington, Ontario, Canada L7R 4A6
Environ Sci Technol 46:5842-50. 2012..The results of this study emphasize the importance of long-term monitoring for assessing the effectiveness of bans and phase-outs on PFCs in the environment... - Altered thyroid status in lake trout (Salvelinus namaycush) exposed to co-planar 3,3',4,4',5-pentachlorobiphenylScott B Brown
National Water Research Institute, Environment Canada, P O Box 5050, Burlington, Ont, Canada L7G 4A6
Aquat Toxicol 67:75-85. 2004..These changes may be of significance when T4 requirements are high for other reasons (e.g. periods of rapid growth, warm temperatures, metamorphosis, and parr-smolt transformation)... - Polychlorinated naphthalenes in the Global Atmospheric Passive sampling (GAPS) studySum Chi Lee
Science and Technology Branch, Environment Canada, 4905 Dufferin Street, Toronto, Ontario M3H 5T4, Canada
Environ Sci Technol 41:2680-7. 2007..The relative contribution by combustion sources and emissions from technical PCN mixtures is expected to vary among sites since it depends on the combustion sources and the technical mixture used in a particular country or region... - Distribution and transportability of hexabromocyclododecane (HBCD) in the Asia-Pacific region using skipjack tuna as a bioindicatorDaisuke Ueno
National Water Research Institute, Environment Canada, 867 Lakeshore Road, P O Box 5050, Burlington ON L7R 4A6, Canada
Environ Pollut 144:238-47. 2006..The estimated empirical 1/2 distance for alpha-HBCD was 8500 km, which is one of the highest atmospheric transportability among various halogenated persistent organic pollutants (POPs)... - Brominated flame retardants in polar bears (Ursus maritimus) from Alaska, the Canadian Arctic, East Greenland, and SvalbardDerek C G Muir
National Water Research Institute, Environment Canada, Burlington, Ontario, Canada
Environ Sci Technol 40:449-55. 2006..Significantly lower sigmaPBDE concentrations were found in fat of bears from Canada and Alaska (means ranging from 7.6 to 22 ng/g lw)... - Variation in organochlorine bioaccumulation by a predatory fish; gender, geography, and data analysis methodsThomas A Johnston
Great Lakes Laboratory for Fisheries and Aquatic Sciences, Department of Fisheries and Oceans, Burlington, Ontario, Canada
Environ Sci Technol 36:4238-44. 2002..The gender composition of fish samples and the type and level of covariate used in statistical analyses should be considered in studies of spatiotemporal variation in organochlorine bioaccumulation in fish... - Analysis for perfluorocarboxylic acids/anions in surface waters and precipitation using GC--MS and analysis of PFOA from large-volume samplesBrian F Scott
Environment Canada, National Water Research Institute, Aquatic Ecosystem Protection, Research Branch, 867 Lakeshore Road, Burlington, Ontario, Canada, L7R 4A6
Environ Sci Technol 40:6405-10. 2006..01 ng/L. This method was applied to Lake Superior samples which produced good agreement for C6-C9 PFCAs between regular analysis (GC-MS) and the XAD-7 followed by GC-MS analysis... - Contaminants in Canadian Arctic biota and implications for human health: prefaceDerek C G Muir
National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, Canada ON L7R 4A6
Sci Total Environ 351:1-3. 2005 - Polybrominated diphenyl ethers and their hydroxylated analogs in plasma of bottlenose dolphins (Tursiops truncatus) from the United States east coastMagali Houde
Aquatic Ecosystem Protection Research Division, Water Science and Technology Directorate, Environment Canada, Burlington, Ontario L7R 4A6, Canada
Environ Toxicol Chem 28:2061-8. 2009.... - Persistent halogenated organic contaminants and mercury in northern fulmars (Fulmarus glacialis) from the Canadian ArcticBirgit M Braune
Environment Canada, National Wildlife Research Centre, Carleton University, Raven Road, Ottawa, Ontario, Canada K1A 0H3
Environ Pollut 158:3513-9. 2010..TEQ was comprised mainly of ΣTEQ(PCDF). Concentrations of Hg and the persistent halogenated compounds reported in this study were below published toxicological threshold values for wild birds... - Biological monitoring of polyfluoroalkyl substances: A reviewMagali Houde
Department of Environmental Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
Environ Sci Technol 40:3463-73. 2006..Continuous monitoring with key sentinel species and standardization of analytical methods are recommended... - Dietary accumulation and biochemical responses of juvenile rainbow trout (Oncorhynchus mykiss) to 3,3',4,4',5-pentachlorobiphenyl (PCB 126)Scott B Brown
Environment Canada, National Water Research Institute, 867 Lakeshore Blvd, PO Box 5050, Ont, L7R 4A6, Burlington, Canada
Aquat Toxicol 59:139-52. 2002..This indicates that the functional competences of the physiological factors associated with growth were maintained under the experimental conditions... - Accumulation of current-use pesticides in neotropical montane forestsGillian L Daly
Department of Chemistry, University of Toronto at Scarborough, 1265 Military Trail, Toronto, Ontario, Canada
Environ Sci Technol 41:1118-23. 2007.... - Trends of legacy and new persistent organic pollutants in the circumpolar arctic: overview, conclusions, and recommendationsDerek C G Muir
Aquatic Ecosystem Protection Research Division, Environment Canada, Burlington, ON, Canada
Sci Total Environ 408:3044-51. 2010..The articles in this special issue summarize the peer reviewed literature and selected technical reports on trends of concentrations and possible biological effects of POPs in the Arctic published up to early 2009... - PCBs and organochlorine pesticides in blubber biopsies from free-ranging St. Lawrence River Estuary beluga whales (Delphinapterus leucas), 1994-1998Karen E Hobbs
National Water Research Institute, Environment Canada, ON, L7R 4A6, Burlington, Canada
Environ Pollut 122:291-302. 2003..It also appears that measuring contaminant concentrations only in stranded whales, may overestimate OC levels in the population as a whole, especially for highly chlorinated OCs... - Monitoring of perfluorinated compounds in aquatic biota: an updated reviewMagali Houde
Environment Canada, Centre Saint Laurent, 105 McGill Street, Montréal, Québec, Canada, H2Y 2E7
Environ Sci Technol 45:7962-73. 2011.... - Bioaccumulation and trophic magnification of short- and medium-chain chlorinated paraffins in food webs from Lake Ontario and Lake MichiganMagali Houde
Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada, Laval, Qudbec, H7C 2M7, Canada
Environ Sci Technol 42:3893-9. 2008..Given the prominence of CPs, particularly in lake waters and in lower food web organisms, further investigation is needed to evaluate the magnitude of their distribution and accumulation/magnification in the Great Lakes environment... - Rainbow trout (Oncorhynchus mykiss) can eliminate chiral organochlorine compounds enantioselectivelyCharles S Wong
Department of Chemistry, University of Toronto, Ontario, Canada
Environ Sci Technol 36:1257-62. 2002..This study highlights the potential of chiral analysis as a tracer of in vivo biotransformation processes of xenobiotic compounds... - Mass-dependent and mass-independent variations in the isotope composition of mercury in a sediment core from a lake polluted by emissions from the combustion of coalTogwell A Jackson
Aquatic Ecosystem Protection Research Division, Water Science and Technology Directorate, Environment Canada, Canada Centre for Inland Waters, 867 Lakeshore Road, PO Box 5050, Burlington, Ontario, Canada L7R 4A6
Sci Total Environ 417:189-203. 2012..In brief, the isotope signature of the polluted sediment is probably the net result of abiotic reactions at the sources of pollution, microbial activities in the lake, and effects of toxic pollutants on the microflora... - Empirical and modeling evidence of regional atmospheric transport of current-use pesticidesDerek C G Muir
National Water Research Institute, Environment Canada, Burlington, Ontario L7R 4A6, Canada
Environ Toxicol Chem 23:2421-32. 2004.... - Deposition of brominated flame retardants to the Devon Ice Cap, Nunavut, CanadaTorsten Meyer
Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario, M1C 1A4, Canada
Environ Sci Technol 46:826-33. 2012.... - Estrogenic activity of dicofol with the human estrogen receptor: Isomer- and enantiomer-specific implicationsPaul F Hoekstra
National Water Research Institute, Environment Canada, Burlington, ON, Canada
Chemosphere 64:174-7. 2006.... - Historical variations in the stable isotope composition of mercury in Arctic lake sedimentsTogwell A Jackson
Aquatic Ecosystem Protection Research Branch, National Water Research Institute, Environment Canada, 867 Lakeshore Road, PO Box 5050, Burlington, Ontario L7R 4A6, Canada
Environ Sci Technol 38:2813-21. 2004..These findings imply that variations in the isotopic makeup of Hg, together with related physical, chemical, and biological data, could yield important new information about the biogeochemical cycle of Hg... - Chiral current-use herbicides in Ontario streamsPerihan Binnur Kurt-Karakus
Center for Atmospheric Research Experiments, Environment Canada, 6248 Eighth Line, Egbert L0L 1N0, Ontario, Canada
Environ Sci Technol 42:8452-8. 2008..S/R values were significantly higher (p < 0.001) in agricultural than urban watersheds. Streamwater from row crop areas showed higher S/R ratios than streamwater from fruit growing areas (p = 0.036)... - Distribution of haloacetic acids in the water columns of the Laurentian Great Lakes and Lake MalawiBrian F Scott
National Water Research Institute, Environment Canada, Burlington, Ontario
Environ Sci Technol 36:1893-8. 2002..Generally, high HAA levels paralleled the degree of industrial activity in the adjacent waters... - Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian ArcticPaul F Hoekstra
Department of Environmental Biology, University of Guelph, Ontario, Canada
Environ Toxicol Chem 21:575-83. 2002.... - Monitoring perfluorinated surfactants in biota and surface water samples following an accidental release of fire-fighting foam into Etobicoke CreekCheryl A Moody
Department of Chemistry, University of Toronto, Ontario, Canada
Environ Sci Technol 36:545-51. 2002..The residence time of perfluorooctanesulfonate in Etobicoke Creek as well as the high bioaccumulation in fish liver suggests that perfluorinated surfactants will persist and bioaccumulate following release into the aquatic environment... - Geographic distribution of selected elements in the livers of polar bears from Greenland, Canada and the United StatesScott A Rush
University of Georgia, Warnell School of Forestry and Natural Resources, Athens, GA 30602 2152, USA
Environ Pollut 153:618-26. 2008..Concentrations of most elements in the polar bears did not exceed toxicity thresholds, although Cd and Hg exceeded levels correlated with the formation of hepatic lesions in laboratory animals... - Prevalence of long-chained perfluorinated carboxylates in seabirds from the Canadian Arctic between 1975 and 2004Craig M Butt
Department of Chemistry, University of Toronto, 80 St George Street, Toronto, Ontario M5S 3H6, Canada
Environ Sci Technol 41:3521-8. 2007..Finally, the detection of the 8:2 and 10:2 FTUCAs in seabirds is suggestive of fluorotelomer alcohols as a source of some PFCAs... - An assessment of the toxicological significance of anthropogenic contaminants in Canadian arctic wildlifeAaron T Fisk
Warnell School of Forest Resources, University of Georgia, Athens, GA 30602 2152, USA
Sci Total Environ 351:57-93. 2005.... - Identification of long-chain perfluorinated acids in biota from the Canadian ArcticJonathan W Martin
Department of Chemistry, University of Toronto, 80 St. George Street, Lash Miller Building, Toronto, Ontario M5S 3H6, Canada
Environ Sci Technol 38:373-80. 2004..Future studies should continue to monitor all fluorinated contaminants and examine the absolute and relative toxicities for this novel suite of PFCAs... - Measurement of 13C/12C of chloroacetic acids by gas chromatography/combustion/isotope ratio mass spectrometryCharles S Wong
Department of Chemistry, University of Toronto, 80 St. George St, Ont, M5S 3H6, Toronto, Canada
Chemosphere 50:903-9. 2003..Our results underscore the potential of stable isotopes to serve as tracers of environmental sources of CAAs... - Organochlorine-induced histopathology in kidney and liver tissue from Arctic fox (Vulpes lagopus)Christian Sonne
Section for Contaminants, Effects and Marine Mammals, Department of Arctic Environment, National Environmental Research Institute, University of Aarhus, Frederiksborgvej 399, PO Box 358, DK 4000 Roskilde, Denmark
Chemosphere 71:1214-24. 2008..Whether such lesions may have an impact on age and health of the animals remains uncertain... - Perfluoroalkyl contaminants in the Canadian Arctic: evidence of atmospheric transport and local contaminationNaomi L Stock
Department of Chemistry, University of Toronto, 80 St George Street, Toronto, Ontario M5S 3H6, Canada
Environ Sci Technol 41:3529-36. 2007..1 to 5.9 pg/m3). In addition, results of this study also indicate that local perfluoroalkyl contamination of Resolute Lake, which is located downstream of an airport wastewater input, has occurred... - Levels and temporal trends of HCH isomers in ringed seals from West and East GreenlandFrank Riget
National Environmental Research Institute, University of Aarhus, Frederiksborgvej 399, DK 4000 Roskilde, Denmark
J Environ Monit 10:935-40. 2008..Similar levels and trends in East and West Greenland support the general understanding of the pathways of HCH isomers to and in the Arctic... - Regional and species specific bioaccumulation of major and trace elements in Arctic seabirdsKatrine Borgå
Norwegian Polar Institute, Polar Environmental Centre, N 9296 Tromsø, Norway
Environ Toxicol Chem 25:2927-36. 2006.... - Bioaccumulation of PCBs in Arctic seabirds: influence of dietary exposure and congener biotransformationKatrine Borgå
Norwegian Polar Institute, N 9296 Tromsø, Norway
Environ Pollut 134:397-409. 2005.... - Perfluoroalkyl contaminants in a food web from Lake OntarioJonathan W Martin
Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
Environ Sci Technol 38:5379-85. 2004.... - Biological and chemical factors of importance in the bioaccumulation and trophic transfer of persistent organochlorine contaminants in Arctic marine food websKatrine Borgå
Norwegian Polar Institute, Polar Environmental Centre, N 9296 Tromsø, Norway
Environ Toxicol Chem 23:2367-85. 2004..This reduces biological validity of the models and may be particularly problematic in a highly seasonal environment, such as the Arctic Ocean... - A world model, a model worldFrank A P C Gobas
Environ Toxicol Chem 23:2279-80. 2004 - Analytical challenges hamper perfluoroalkyl researchJonathan W Martin
University of Toronto, Canada
Environ Sci Technol 38:248A-255A. 2004 - Collection of airborne fluorinated organics and analysis by gas chromatography/chemical ionization mass spectrometryJonathan W Martin
Department of Environmental Biology, University of Guelph, Ontario
Anal Chem 74:584-90. 2002..Low concentrations of fluoroorganics were consistently detected in blanks (<4 pg m(-3)); however, this did not prevent confirmation or quantification of environmental concentrations... - Vapor pressures of the fluorinated telomer alcohols--limitations of estimation methodsNaomi L Stock
Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6 Canada
Environ Sci Technol 38:1693-9. 2004..It appears likely that the unique molecular geometry of the FTOHs influences not only their vapor pressure but also other physical properties and hence environmental fate and dissemination... - Polyfluorinated telomer alcohols and sulfonamides in the North American troposphereNaomi L Stock
Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
Environ Sci Technol 38:991-6. 2004..The nonuniform nature of the spatial distribution of both polyfluorinated sulfonamides and FTOHs is indicative of the importance of point sources for the dissemination of these contaminants in the North American troposphere... - Levels and temporal trends of toxaphene congeners in beluga whales (Delphinapterus leucas) from the St. Lawrence Estuary, CanadaBruno Gouteux
Institut des Sciences de la Mer, , , Rimouski, , Canada, G5L 3A1
Environ Sci Technol 37:4603-9. 2003..However, a most likely explanation is the selective degradation of the technical product in soils and atmosphere in the source region... - Concentrations of organochlorine pesticides and polychlorinated biphenyls in amphipods (Gammarus lacustris) along an elevation gradient in mountain lakes of western CanadaJules M Blais
Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
Environ Toxicol Chem 22:2605-13. 2003..Because Gammarus is an important trophic link in aquatic foodwebs in these environments, enhanced concentrations of toxicants in prey may increase their biomagnification in top predators of high-altitude lakes... - Airborne haloacetic acidsJonathan W Martin
Department of Environmental Biology, University of Guelph, Bovey Building, Guelph, Ontario, Canada N1G 2W1
Environ Sci Technol 37:2889-97. 2003..A simple deposition model indicated that dry deposition of TFA and TCA should not be neglected in temperate mid-latitude environments and that precipitation concentrations can be successfully predicted by the Henry's law constant... - Field level evaluation and risk assessment of the toxicity of dichloroacetic acid to the aquatic macrophytes Lemna gibba, Myriophyllum spicatum, and Myriophyllum sibiricumMark L Hanson
Department of Environmental Biology, Centre for Toxicology, University of Guelph, Ont, N1G 2W1, Guelph, Canada
Ecotoxicol Environ Saf 55:46-63. 2003..01%. The use of effect measure distributions holds promise as a new risk assessment technique for aquatic plants. Currently, environmental levels of DCA do not pose a risk to these plants... - Assessment and characterization of polychlorinated biphenyls near a hazardous waste incinerator: analysis of vegetation, snow, and sedimentsJules M Blais
Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
Environ Toxicol Chem 22:126-33. 2003.... - Enantiomer fractions of chiral organochlorine pesticides and polychlorinated biphenyls in standard and certified reference materialsCharles S Wong
Department of Chemistry. University of Toronto, 80 St. George Street, Toronto, Ont, Canada M5S 3H6
Chemosphere 49:1339-47. 2002..These values should aid in the quality assurance/quality control methodologies for chiral environmental chemistry using standardized reference materials... - Atmospheric distribution and long-range transport behavior of organochlorine pesticides in North AmericaLi Shen
Department of Chemistry, University of Toronto at Scarborough, Toronto, Ontario, Canada M1C 1A4
Environ Sci Technol 39:409-20. 2005.... - Organohalogen contaminants in delphinoid cetaceansMagali Houde
University of Guelph, Department of Environmental Biology, Guelph, Ontario NIG 2WI, Canada
Rev Environ Contam Toxicol 184:1-57. 2005..Nonetheless, PHCs are also found in marine mammal tissues from the Southern Hemisphere and in remote regions such as the Arctic, reflecting the global distribution and contamination of PHCs in the marine ecosystem... - Age and seasonal variability of polybrominated diphenyl ethers in free-ranging East Greenland polar bears (Ursus maritimus)Rune Dietz
Department of Arctic Environment, National Environmental Research Institute, Frederiksborgvej 399, P O Box 358, DK 4000 Roskilde, Denmark
Environ Pollut 146:166-73. 2007..We suggest that future geographical PBDE data comparisons may not need corrections for sex or age, but such data sets should be corrected for seasonal variability, using the presented correctional trigonometric regression... - Xenoendocrine pollutants may reduce size of sexual organs in East Greenland polar bears (Ursus maritimus)Christian Sonne
Department of Arctic Environment, National Environmental Research Institute, Frederiksborgvej 399, P O Box 358, DK 4000 Roskilde, Denmark
Environ Sci Technol 40:5668-74. 2006..This may pose a riskto this polar bear subpopulation in the future because of reduced sperm and egg quality/quantity and uterus and penis size/robustness... - Perfluoroalkyl compounds in relation to life-history and reproductive parameters in bottlenose dolphins (Tursiops truncatus) from Sarasota Bay, Florida, U.S.AMagali Houde
Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
Environ Toxicol Chem 25:2405-12. 2006..These chemicals also were detected in urine (mean sigma PFCs, 26.6 +/- 79 ng/g wet wt), indicating that the urinary system is an important pathway of PFC depuration in dolphins... - Empirical and modeling evidence of the long-range atmospheric transport of decabromodiphenyl etherKnut Breivik
NILU Norwegian Institute for Air Research, P O Box 100, NO 2027 Kjeller, Norway
Environ Sci Technol 40:4612-8. 2006..Processes that need to be understood better in order to improve predictions of LRT for BDE-209 include particle dry deposition, precipitation scavenging, and photolysis in the sorbed state... - Temporal trends of perfluoroalkyl contaminants in polar bears (Ursus maritimus) from two locations in the North American Arctic, 1972-2002Marla Smithwick
Department of Environmental Biology, University of Guelph, Bovey Building, Guelph, Ontario N1G 2W1, Canada
Environ Sci Technol 40:1139-43. 2006..The doubling time for PFOS was similar to the doubling time of production of perfluoroctylsulfonyl-fluoride-based products during the 1990s... - Levels and trends of brominated flame retardants in the ArcticCynthia A de Wit
Department of Applied Environmental Science, Stockholm University, SE 10691 Stockholm, Sweden
Chemosphere 64:209-33. 2006.... - Current-use and legacy pesticide history in the Austfonna Ice Cap, Svalbard, NorwayMark H Hermanson
Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
Environ Sci Technol 39:8163-9. 2005.... - New organochlorine contaminants and metabolites in plasma and eggs of glaucous gulls (Larus hyperboreus) from the Norwegian ArcticJonathan Verreault
Norwegian Polar Institute, Tromsø, NO 9296, Norway
Environ Toxicol Chem 24:2486-99. 2005..As part of a complex profile of contaminant exposure, these chemical classes and metabolites may be contributing factors to enhance physiological stress in breeding glaucous gulls... - Perfluorinated alkyl substances in plasma, liver, brain, and eggs of glaucous gulls (Larus hyperboreus) from the Norwegian arcticJonathan Verreault
Norwegian Polar Institute, Tromsø, NO 9296, Norway
Environ Sci Technol 39:7439-45. 2005.... - Circumpolar study of perfluoroalkyl contaminants in polar bears (Ursus maritimus)Marla Smithwick
Department of Environmental Biology, University of Guelph, Bovey Building, Guelph, Ontario N1G 2W1, Canada
Environ Sci Technol 39:5517-23. 2005.... - Chlorinated hydrocarbon contaminants and metabolites in polar bears (Ursus maritimus) from Alaska, Canada, East Greenland, and Svalbard: 1996-2002Jonathan Verreault
University of Windsor, Great Lakes Institute for Environmental Research, Windsor, Canada, ON N9B 3P4
Sci Total Environ 351:369-90. 2005..In addition to continued biomonitoring, further research on health and population status is needed to evaluate the impact from chronic exposure of polar bear populations to CHCs and their metabolites... - Development and application of bioaccumulation models to assess persistent organic pollutant temporal trends in arctic ringed seal (Phoca hispida) populationsBrendan E Hickie
Environmental and Resource Studies, Trent University, Peterborough, ON, Canada K9J 7B8
Sci Total Environ 351:413-26. 2005.... - Perflouroalkyl contaminants in liver tissue from East Greenland polar bears (Ursus maritimus)Marla Smithwick
Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
Environ Toxicol Chem 24:981-6. 2005..No significant correlations were found between concentrations of PFCAs in liver tissue and previously reported polychlorinated biphenyl (PCB) congeners analyzed in fat samples from the same bears... - Comparison of toxaphene congeners levels in five seal species from eastern Canada: what is the importance of biological factors?Bruno Gouteux
Institut des Sciences de la Mer, Universite du Quebec a Rimouski, Rimouski, Quebec, Canada G5L 3A1
Environ Sci Technol 39:1448-54. 2005..Results reported in this study indicated that the diet is likely the main factor accounting for interspecies variations in toxaphene contamination in seals from eastern Canada... - Spatial distribution of polybrominated diphenyl ethers and polybrominated biphenyls in lake trout from the Laurentian Great LakesJennifer M Luross
Department of Environmental Biology, University of Guelph, Ont, Canada
Chemosphere 46:665-72. 2002..25+/-0.13 ng/g ww, 1.7+/-0.89 ng/g lw). In all lake trout samples, 2,2',4,4',5,5'-hexabromobiphenyl (BB-153), a major constituent of the flame-retardant FireMaster BP-6, was the predominant PBB congener...