P F Hoekstra

Summary

Affiliation: Environment Canada
Country: Canada

Publications

  1. 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
  2. ncbi request reprint Profile of persistent chlorinated contaminants, including selected chiral compounds, in wolverine (Gulo gulo) livers from the Canadian Arctic
    P F Hoekstra
    National Water Research Institute, Environment Canada, ON L7R4A6, Burlington, Canada
    Chemosphere 53:551-60. 2003
  3. ncbi request reprint Concentrations of selected essential and non-essential elements in arctic fox (Alopex lagopus) and wolverines (Gulo gulo) from the Canadian Arctic
    P F Hoekstra
    Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
    Sci Total Environ 309:81-92. 2003
  4. ncbi request reprint Trophic transfer of persistent organochlorine contaminants (OCs) within an Arctic marine food web from the southern Beaufort-Chukchi Seas
    P F Hoekstra
    Department of Environmental Biology, University of Guelph, Guelph, ON, Canada N1G 2W1
    Environ Pollut 124:509-22. 2003
  5. ncbi request reprint Organochlorine contaminant and stable isotope profiles in Arctic fox (Alopex lagopus) from the Alaskan and Canadian Arctic
    P F Hoekstra
    Department of Environmental Biology, University of Guelph, Guelph, ON, Canada N1G2W1
    Environ Pollut 122:423-33. 2003
  6. 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
  7. ncbi request reprint Bioaccumulation of organochlorine contaminants in bowhead whales (Balaena mysticetus) from Barrow, Alaska
    P F Hoekstra
    Department of Environmental Biology, University of Guelph, ON, Canada
    Arch Environ Contam Toxicol 42:497-507. 2002
  8. ncbi request reprint Enantiomer-specific biomagnification of alpha-hexachlorocyclohexane and selected chiral chlordane-related compounds within an Arctic marine food web
    Paul F Hoekstra
    University of Guelph, Department of Environmental Biology, Environment Canada, National Water Research Institute, Burlington, Ontario, Canada
    Environ Toxicol Chem 22:2482-91. 2003
  9. ncbi request reprint Concentrations of persistent organochlorine contaminants in bowhead whale tissues and other biota from northern Alaska: implications for human exposure from a subsistence diet
    P F Hoekstra
    National Water Research Institute, Environment Canada, Burlington, Ont, Canada L7R4A6
    Environ Res 98:329-40. 2005
  10. ncbi request reprint Persistent organic pollutants and mercury in marine biota of the Canadian Arctic: an overview of spatial and temporal trends
    B M Braune
    National Wildlife Research Centre, Canadian Wildlife Service, Environment Canada, Carleton University Raven Road, Ottawa, ON, Canada K1A 0H3
    Sci Total Environ 351:4-56. 2005

Detail Information

Publications22

  1. 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...
  2. ncbi request reprint Profile of persistent chlorinated contaminants, including selected chiral compounds, in wolverine (Gulo gulo) livers from the Canadian Arctic
    P F Hoekstra
    National Water Research Institute, Environment Canada, ON L7R4A6, Burlington, Canada
    Chemosphere 53:551-60. 2003
    ..While summation operator PCB did not exceed the concentrations associated with mammalian reproductive impairment, future research is required to properly evaluate the potential affect of other OCs on the overall health of wolverines...
  3. ncbi request reprint Concentrations of selected essential and non-essential elements in arctic fox (Alopex lagopus) and wolverines (Gulo gulo) from the Canadian Arctic
    P F Hoekstra
    Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
    Sci Total Environ 309:81-92. 2003
    ....
  4. ncbi request reprint Trophic transfer of persistent organochlorine contaminants (OCs) within an Arctic marine food web from the southern Beaufort-Chukchi Seas
    P F Hoekstra
    Department of Environmental Biology, University of Guelph, Guelph, ON, Canada N1G 2W1
    Environ Pollut 124:509-22. 2003
    ....
  5. ncbi request reprint Organochlorine contaminant and stable isotope profiles in Arctic fox (Alopex lagopus) from the Alaskan and Canadian Arctic
    P F Hoekstra
    Department of Environmental Biology, University of Guelph, Guelph, ON, Canada N1G2W1
    Environ Pollut 122:423-33. 2003
    ..Further research is required to properly elucidate the potential health impacts to this species from exposure to OCs...
  6. 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...
  7. ncbi request reprint Bioaccumulation of organochlorine contaminants in bowhead whales (Balaena mysticetus) from Barrow, Alaska
    P F Hoekstra
    Department of Environmental Biology, University of Guelph, ON, Canada
    Arch Environ Contam Toxicol 42:497-507. 2002
    ..Principal component analysis of contaminants levels in bowhead blubber samples suggest that proportions of OCs, such as beta-HCH, fluctuate with seasonal migration of this species between the Bering, Chukchi, and Beaufort Seas...
  8. ncbi request reprint Enantiomer-specific biomagnification of alpha-hexachlorocyclohexane and selected chiral chlordane-related compounds within an Arctic marine food web
    Paul F Hoekstra
    University of Guelph, Department of Environmental Biology, Environment Canada, National Water Research Institute, Burlington, Ontario, Canada
    Environ Toxicol Chem 22:2482-91. 2003
    ..However, the modification of EFs from bowhead liver to blubber suggests that this species has the ability to enantioselectively biotransform and accumulate several chiral OC compounds...
  9. ncbi request reprint Concentrations of persistent organochlorine contaminants in bowhead whale tissues and other biota from northern Alaska: implications for human exposure from a subsistence diet
    P F Hoekstra
    National Water Research Institute, Environment Canada, Burlington, Ont, Canada L7R4A6
    Environ Res 98:329-40. 2005
    ..Overall, bowhead whale tissues and other biota from northern Alaska are safe to consume at, or below, the levels calculated...
  10. ncbi request reprint Persistent organic pollutants and mercury in marine biota of the Canadian Arctic: an overview of spatial and temporal trends
    B M Braune
    National Wildlife Research Centre, Canadian Wildlife Service, Environment Canada, Carleton University Raven Road, Ottawa, ON, Canada K1A 0H3
    Sci Total Environ 351:4-56. 2005
    ..Continuing temporal monitoring of POPs and Hg in a variety of marine biota must be a priority...
  11. ncbi request reprint Enantiomer-specific activity of o,p'-DDT with the human estrogen receptor
    P F Hoekstra
    Department of Environmental Biology, University of Guelph, ON, N1G 2W1, Guelph, Canada
    Toxicol Lett 125:75-81. 2001
    ..This data demonstrates the need to consider stereochemistry of environmental contaminants and their potential influence on biological responses...
  12. ncbi request reprint Biomagnification
    Aaron T Fisk
    Mar Pollut Bull 46:522-4; author reply 525-6. 2003
  13. ncbi request reprint Concentrations of selected persistent organochlorine contaminants in store-bought foods from northern Alaska
    Todd M O'Hara
    Department of Wildlife Management, North Slope Borough, Barrow, Alaska, USA
    Int J Circumpolar Health 64:303-13. 2005
    ..e., store-bought foods)...
  14. 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
    ....
  15. ncbi request reprint Spatial and temporal trends of contaminants in terrestrial biota from the Canadian Arctic
    Mary Gamberg
    Gamberg Consulting, Box 10460, Whitehorse, Canada, YT, Y1A 7A1
    Sci Total Environ 351:148-64. 2005
    ....
  16. 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
    ....
  17. ncbi request reprint Bioaccumulation factors for PCBs revisited
    Katrine Borgå
    Norwegian Polar Institute, N 9296 Tromsø, Norway
    Environ Sci Technol 39:4523-32. 2005
    ....
  18. 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...
  19. 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...
  20. ncbi request reprint Toxicokinetics of three polychlorinated biphenyl technical mixtures in rainbow trout (Oncorhynchus mykiss)
    Andrea H Buckman
    Department of Environmental Biology, University of Guelph, Guelph, Ontario, N1G 2W1 Canada
    Environ Toxicol Chem 23:1725-36. 2004
    ..Because t1/2s in this experiment were slower than t1/2s reported in other work, water temperature also may be an important factor in determining the t1/2s of all PCB congeners in fish...
  21. 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...
  22. 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
    ....