Derek Muir

Summary

Affiliation: Environment Canada
Country: Canada

Publications

  1. ncbi request reprint Spatial and temporal trends of mercury and other metals in landlocked char from lakes in the Canadian Arctic archipelago
    Derek Muir
    National Water Research Institute, Environment Canada, Burlington, ON, Canada L7R 4A6
    Sci Total Environ 351:464-78. 2005
  2. ncbi request reprint Spatial trends and historical deposition of mercury in eastern and northern Canada inferred from lake sediment cores
    D C G Muir
    Environment Canada, Aquatic Ecosystem Protection Research Division, Burlington ON L7R 4A6, Canada
    Environ Sci Technol 43:4802-9. 2009
  3. ncbi request reprint Empirical and modeling evidence of regional atmospheric transport of current-use pesticides
    Derek C G Muir
    National Water Research Institute, Environment Canada, Burlington, Ontario L7R 4A6, Canada
    Environ Toxicol Chem 23:2421-32. 2004
  4. doi request reprint Trends of legacy and new persistent organic pollutants in the circumpolar arctic: overview, conclusions, and recommendations
    Derek C G Muir
    Aquatic Ecosystem Protection Research Division, Environment Canada, Burlington, ON, Canada
    Sci Total Environ 408:3044-51. 2010
  5. ncbi request reprint Contaminants in Canadian arctic biota and implications for human health: conclusions and knowledge gaps
    Derek C G Muir
    National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON, Canada L7R 4A6
    Sci Total Environ 351:539-46. 2005
  6. ncbi request reprint Contaminants in Canadian Arctic biota and implications for human health: preface
    Derek C G Muir
    National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, Canada ON L7R 4A6
    Sci Total Environ 351:1-3. 2005
  7. ncbi request reprint Bioaccumulation of PCBs and chlorinated pesticides in seals, fishes and invertebrates from the White Sea, Russia
    Derek Muir
    National Water Research Institute, Environment Canada, Burlington, ON, Canada L7R 4A6
    Sci Total Environ 306:111-31. 2003
  8. ncbi request reprint Persistent organic pollutants and metals in the freshwater biota of the Canadian Subarctic and Arctic: an overview
    Marlene S Evans
    National Water Research Institute, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK, Canada S7N 3H5
    Sci Total Environ 351:94-147. 2005
  9. doi request reprint Current-use pesticides in inland lake waters, precipitation, and air from Ontario, Canada
    Perihan Binnur Kurt-Karakus
    Aquatic Ecosystem Protection Research Division, Environment Canada, Burlington, Ontario, Canada
    Environ Toxicol Chem 30:1539-48. 2011
  10. ncbi request reprint 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

Detail Information

Publications80

  1. ncbi request reprint Spatial and temporal trends of mercury and other metals in landlocked char from lakes in the Canadian Arctic archipelago
    Derek Muir
    National Water Research Institute, Environment Canada, Burlington, ON, Canada L7R 4A6
    Sci Total Environ 351:464-78. 2005
    ..Differences in char trophic level inferred from delta15N values best explained the higher concentrations of Hg in Amituk Lake compared to the other lakes...
  2. ncbi request reprint Spatial trends and historical deposition of mercury in eastern and northern Canada inferred from lake sediment cores
    D C G Muir
    Environment Canada, Aquatic Ecosystem Protection Research Division, Burlington ON L7R 4A6, Canada
    Environ Sci Technol 43:4802-9. 2009
    ....
  3. ncbi request reprint Empirical and modeling evidence of regional atmospheric transport of current-use pesticides
    Derek C G Muir
    National Water Research Institute, Environment Canada, Burlington, Ontario L7R 4A6, Canada
    Environ Toxicol Chem 23:2421-32. 2004
    ....
  4. doi request reprint Trends of legacy and new persistent organic pollutants in the circumpolar arctic: overview, conclusions, and recommendations
    Derek 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...
  5. ncbi request reprint Contaminants in Canadian arctic biota and implications for human health: conclusions and knowledge gaps
    Derek 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...
  6. ncbi request reprint Contaminants in Canadian Arctic biota and implications for human health: preface
    Derek C G Muir
    National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, Canada ON L7R 4A6
    Sci Total Environ 351:1-3. 2005
  7. ncbi request reprint Bioaccumulation of PCBs and chlorinated pesticides in seals, fishes and invertebrates from the White Sea, Russia
    Derek Muir
    National Water Research Institute, Environment Canada, Burlington, ON, Canada L7R 4A6
    Sci Total Environ 306:111-31. 2003
    ....
  8. ncbi request reprint Persistent organic pollutants and metals in the freshwater biota of the Canadian Subarctic and Arctic: an overview
    Marlene S Evans
    National Water Research Institute, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK, Canada S7N 3H5
    Sci Total Environ 351:94-147. 2005
    ....
  9. doi request reprint Current-use pesticides in inland lake waters, precipitation, and air from Ontario, Canada
    Perihan Binnur Kurt-Karakus
    Aquatic Ecosystem Protection Research Division, Environment Canada, Burlington, Ontario, Canada
    Environ Toxicol Chem 30:1539-48. 2011
    ..710). Lakes with smaller watershed areas showed higher SFs, supporting the hypothesis of stereoselective processing of deposited metolachlor within the watersheds, followed by transport to the lakes...
  10. ncbi request reprint 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...
  11. ncbi request reprint Fractionation and bioaccumulation of perfluorooctane sulfonate (PFOS) isomers in a Lake Ontario food web
    Magali 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...
  12. ncbi request reprint Toxaphene and other persistent organochlorine pesticides in three species of albatrosses from the north and south Pacific Ocean
    Derek C G Muir
    National Water Research Institute, Environment Canada, Burlington, Ontario
    Environ Toxicol Chem 21:413-23. 2002
    ....
  13. ncbi request reprint Hydroxylated PCBs and other chlorinated phenolic compounds in lake trout (Salvelinus namaycush) blood plasma from the Great Lakes region
    Linda 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...
  14. ncbi request reprint 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
    ....
  15. ncbi request reprint Variation in organochlorine bioaccumulation by a predatory fish; gender, geography, and data analysis methods
    Thomas 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...
  16. ncbi request reprint Are there other persistent organic pollutants? A challenge for environmental chemists
    Derek 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...
  17. ncbi request reprint Distribution of haloacetic acids in the water columns of the Laurentian Great Lakes and Lake Malawi
    Brian 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...
  18. ncbi request reprint Analysis for perfluorocarboxylic acids/anions in surface waters and precipitation using GC--MS and analysis of PFOA from large-volume samples
    Brian 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...
  19. ncbi request reprint 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...
  20. doi request reprint Polybrominated diphenyl ethers, toxaphenes, and other halogenated organic pollutants in great blue heron eggs
    Louise Champoux
    Environment Canada, Wildlife and Landscape Science Directorate, Science and Technology Branch, 1141 route de l Eglise, C P 10100, Sainte Foy, Quebec, G1V 4H5
    Environ Toxicol Chem 29:243-9. 2010
    ..Toxaphene was detected in great blue heron eggs at levels comparable to those of other major chlorinated pesticides. Major toxaphene congeners were octachlorobornane P44 and the nonachlorobornane P50. Environ...
  21. doi request reprint Persistent halogenated organic contaminants and mercury in northern fulmars (Fulmarus glacialis) from the Canadian Arctic
    Birgit 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...
  22. ncbi request reprint Historical variations in the stable isotope composition of mercury in Arctic lake sediments
    Togwell 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...
  23. ncbi request reprint Altered thyroid status in lake trout (Salvelinus namaycush) exposed to co-planar 3,3',4,4',5-pentachlorobiphenyl
    Scott 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)...
  24. ncbi request reprint Hydroxylated and methylsulfone-containing metabolites of polychlorinated biphenyls in the plasma and blubber of bowhead whales (Balaena mysticetus)
    Paul F Hoekstra
    University of Guelph, Department of Environmental Biology, Guelph, Ontario N1G 2W1, Canada
    Environ Toxicol Chem 22:2650-8. 2003
    ..Further research is required to elucidate the toxicokinetics and distribution of OH-PCBs in this cetacean...
  25. ncbi request reprint PCBs and organochlorine pesticides in blubber biopsies from free-ranging St. Lawrence River Estuary beluga whales (Delphinapterus leucas), 1994-1998
    Karen 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...
  26. ncbi request reprint Target tissue selectivity and burdens of diverse classes of brominated and chlorinated contaminants in polar bears (Ursus maritimus) from East Greenland
    Wouter 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...
  27. ncbi request reprint 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...
  28. ncbi request reprint Poly and perfluorinated carboxylates in North American precipitation
    Brian 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...
  29. ncbi request reprint Distribution and transportability of hexabromocyclododecane (HBCD) in the Asia-Pacific region using skipjack tuna as a bioindicator
    Daisuke 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)...
  30. ncbi request reprint Polychlorinated naphthalenes in the Global Atmospheric Passive sampling (GAPS) study
    Sum 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...
  31. doi request reprint Comparison of concentrations and stereoisomer ratios of mecoprop, dichlorprop and metolachlor in Ontario streams, 2006-2007 vs. 2003-2004
    Perihan 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...
  32. ncbi request reprint Brominated flame retardants in polar bears (Ursus maritimus) from Alaska, the Canadian Arctic, East Greenland, and Svalbard
    Derek 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)...
  33. ncbi request reprint Metolachlor and atrazine in the great lakes
    Perihan 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...
  34. ncbi request reprint Chiral current-use herbicides in Ontario streams
    Perihan 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)...
  35. ncbi request reprint Seasonally resolved concentrations of persistent organic pollutants in the global atmosphere from the first year of the GAPS study
    Karla 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...
  36. ncbi request reprint Trichloroacetic acid (TCA) and trifluoroacetic acid (TFA) mixture toxicity to the macrophytes Myriophyllum spicatum and Myriophyllum sibiricum in aquatic microcosms
    Mark L Hanson
    Centre for Toxicology, Department of Environmental Biology, University of Guelph, ON, Canada
    Sci Total Environ 285:247-59. 2002
    ..These data suggest that TCA/TFA mixtures at environmentally relevant concentrations do not pose a significant risk to these aquatic macrophytes...
  37. ncbi request reprint Bioaccumulation and trophic magnification of short- and medium-chain chlorinated paraffins in food webs from Lake Ontario and Lake Michigan
    Magali 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...
  38. ncbi request reprint 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...
  39. ncbi request reprint Estrogenic activity of dicofol with the human estrogen receptor: Isomer- and enantiomer-specific implications
    Paul F Hoekstra
    National Water Research Institute, Environment Canada, Burlington, ON, Canada
    Chemosphere 64:174-7. 2006
    ....
  40. ncbi request reprint Levels and temporal trends of toxaphene congeners in beluga whales (Delphinapterus leucas) from the St. Lawrence Estuary, Canada
    Bruno Gouteux
    Institut des Sciences de la Mer, Universite du Quebec a Rimouski, 310 allee des Ursulines, Rimouski, Quebec, 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...
  41. doi request reprint 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...
  42. ncbi request reprint Deposition and cycling of sulfur controls mercury accumulation in Isle Royale fish
    Paul E Drevnick
    Department of Zoology, Miami University, Oxford, Ohio 45056, USA
    Environ Sci Technol 41:7266-72. 2007
    ..Therefore, reductions in anthropogenic sulfur emissions may provide a synergistic solution to the mercury problem in sulfate-limited freshwaters...
  43. ncbi request reprint Spatial trends of perfluoroalkyl compounds in ringed seals (Phoca hispida) from the Canadian Arctic
    Craig 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...
  44. ncbi request reprint Geographic distribution of selected elements in the livers of polar bears from Greenland, Canada and the United States
    Scott 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...
  45. ncbi request reprint Pesticides in western Canadian mountain air and soil
    Gillian 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...
  46. ncbi request reprint Organochlorine compounds in Lake Superior: chiral polychlorinated biphenyls and biotransformation in the aquatic food web
    Charles S Wong
    Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
    Environ Sci Technol 38:84-92. 2004
    ..This result suggests that significant biotransformation may occur for metabolizable PCB congeners over the lifespan of these biota. This study highlights the potential of chiral analysis to study biotransformation processes in food webs...
  47. ncbi request reprint Perfluoroalkyl contaminants in the Canadian Arctic: evidence of atmospheric transport and local contamination
    Naomi 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...
  48. doi request reprint Levels and temporal trends of HCH isomers in ringed seals from West and East Greenland
    Frank 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...
  49. ncbi request reprint 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...
  50. ncbi request reprint Concentrations of organochlorine pesticides and polychlorinated biphenyls in amphipods (Gammarus lacustris) along an elevation gradient in mountain lakes of western Canada
    Jules 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...
  51. ncbi request reprint Airborne haloacetic acids
    Jonathan 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...
  52. ncbi request reprint Biomagnification
    Aaron T Fisk
    Mar Pollut Bull 46:522-4; author reply 525-6. 2003
  53. ncbi request reprint Enantiomer fractions of chiral organochlorine pesticides and polychlorinated biphenyls in standard and certified reference materials
    Charles 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...
  54. ncbi request reprint Spatial distribution of polybrominated diphenyl ethers and polybrominated biphenyls in lake trout from the Laurentian Great Lakes
    Jennifer 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...
  55. ncbi request reprint Rainbow trout (Oncorhynchus mykiss) can eliminate chiral organochlorine compounds enantioselectively
    Charles 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...
  56. ncbi request reprint Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian Arctic
    Paul F Hoekstra
    Department of Environmental Biology, University of Guelph, Ontario, Canada
    Environ Toxicol Chem 21:575-83. 2002
    ....
  57. ncbi request reprint Identification of long-chain perfluorinated acids in biota from the Canadian Arctic
    Jonathan 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...
  58. ncbi request reprint Prevalence of long-chained perfluorinated carboxylates in seabirds from the Canadian Arctic between 1975 and 2004
    Craig 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...
  59. ncbi request reprint Hexachlorocyclohexanes in the North American atmosphere
    Li Shen
    Department of Chemistry, University of Toronto at Scarborough, 1265 Military Trail, Toronto, Ontario, Canada M1C 1A4
    Environ Sci Technol 38:965-75. 2004
    ..Passive air sampling is a powerful tool to discern the large-scale variability of semivolatile and persistent organic chemicals in the atmosphere...
  60. ncbi request reprint Organohalogen contaminants in delphinoid cetaceans
    Magali 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...
  61. ncbi request reprint Levels and trends of brominated flame retardants in the Arctic
    Cynthia A de Wit
    Department of Applied Environmental Science, Stockholm University, SE 10691 Stockholm, Sweden
    Chemosphere 64:209-33. 2006
    ....
  62. ncbi request reprint New organochlorine contaminants and metabolites in plasma and eggs of glaucous gulls (Larus hyperboreus) from the Norwegian Arctic
    Jonathan 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...
  63. ncbi request reprint Perfluorinated alkyl substances in plasma, liver, brain, and eggs of glaucous gulls (Larus hyperboreus) from the Norwegian arctic
    Jonathan Verreault
    Norwegian Polar Institute, Tromsø, NO 9296, Norway
    Environ Sci Technol 39:7439-45. 2005
    ....
  64. ncbi request reprint 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...
  65. ncbi request reprint Development and application of bioaccumulation models to assess persistent organic pollutant temporal trends in arctic ringed seal (Phoca hispida) populations
    Brendan E Hickie
    Environmental and Resource Studies, Trent University, Peterborough, ON, Canada K9J 7B8
    Sci Total Environ 351:413-26. 2005
    ....
  66. ncbi request reprint Chlorinated hydrocarbon contaminants and metabolites in polar bears (Ursus maritimus) from Alaska, Canada, East Greenland, and Svalbard: 1996-2002
    Jonathan 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...
  67. ncbi request reprint 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
    ....
  68. ncbi request reprint Atmospheric distribution and long-range transport behavior of organochlorine pesticides in North America
    Li Shen
    Department of Chemistry, University of Toronto at Scarborough, Toronto, Ontario, Canada M1C 1A4
    Environ Sci Technol 39:409-20. 2005
    ....
  69. ncbi request reprint Polychlorinated biphenyls and polybrominated diphenyl ethers in the North American atmosphere
    Li Shen
    Department of Chemistry, University of Toronto at Scarborough, 1265 Military Trail, Toronto, Ont M1C 1A4, Canada
    Environ Pollut 144:434-44. 2006
    ..Air from the Canadian Arctic had a relatively higher percentage of lighter PCB congeners than air sampled in the tropical region, which is interpreted as evidence for global fractionation...
  70. ncbi request reprint Biomagnification of perfluoroalkyl compounds in the bottlenose dolphin (Tursiops truncatus) food web
    Magali 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...
  71. ncbi request reprint Rapid response of Arctic ringed seals to changes in perfluoroalkyl production
    Craig M Butt
    Department of Chemistry, University of Toronto, 80 St George Street, Toronto, Ontario M5S 3H6, Canada
    Environ Sci Technol 41:42-9. 2007
    ..Further, the relatively short doubling times of the PFCAs and PFOS disappearance half-lives support the hypothesis of atmospheric transport as the main transport mechanism of PFCs to the arctic environment...
  72. ncbi request reprint Polyfluorinated telomer alcohols and sulfonamides in the North American troposphere
    Naomi 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...
  73. ncbi request reprint Biological and chemical factors of importance in the bioaccumulation and trophic transfer of persistent organochlorine contaminants in Arctic marine food webs
    Katrine 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...
  74. ncbi request reprint Perfluoroalkyl contaminants in a food web from Lake Ontario
    Jonathan W Martin
    Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
    Environ Sci Technol 38:5379-85. 2004
    ....
  75. ncbi request reprint Regional and species specific bioaccumulation of major and trace elements in Arctic seabirds
    Katrine Borgå
    Norwegian Polar Institute, Polar Environmental Centre, N 9296 Tromsø, Norway
    Environ Toxicol Chem 25:2927-36. 2006
    ....
  76. ncbi request reprint Bioaccumulation of PCBs in Arctic seabirds: influence of dietary exposure and congener biotransformation
    Katrine Borgå
    Norwegian Polar Institute, N 9296 Tromsø, Norway
    Environ Pollut 134:397-409. 2005
    ....
  77. ncbi request reprint Toward a global network for persistent organic pollutants in air: results from the GAPS study
    Karla 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...
  78. ncbi request reprint Empirical and modeling evidence of the long-range atmospheric transport of decabromodiphenyl ether
    Knut 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...
  79. ncbi request reprint An assessment of the toxicological significance of anthropogenic contaminants in Canadian arctic wildlife
    Aaron T Fisk
    Warnell School of Forest Resources, University of Georgia, Athens, GA 30602 2152, USA
    Sci Total Environ 351:57-93. 2005
    ....