Lawrence P Burkhard

Summary

Affiliation: U.S. Environmental Protection Agency
Country: USA

Publications

  1. ncbi Factors influencing the design of bioaccumulation factor and biota-sediment accumulation factor field studies
    Lawrence P Burkhard
    U S Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 22:351-60. 2003
  2. ncbi Comparing laboratory- and field-measured biota-sediment accumulation factors
    Lawrence P Burkhard
    US Environmental Protection Agency USEPA, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Integr Environ Assess Manag 8:32-41. 2012
  3. ncbi Bioaccumulation data from laboratory and field studies: are they comparable?
    Lawrence P Burkhard
    US Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, MN 55804, USA
    Integr Environ Assess Manag 8:13-6. 2012
  4. ncbi Direct application of biota-sediment accumulation factors
    Lawrence P Burkhard
    U S Environmental Protection Agency, Mid Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 29:230-6. 2010
  5. ncbi Organic carbon-water concentration quotients (II(SOC)S and pi(poc)S): measuring apparent chemical disequilibria and exploring the impact of black carbon in Lake Michigan
    Lawrence P Burkhard
    Mid Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U S Environmental Protection Agency, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Sci Technol 42:3615-21. 2008
  6. ncbi Toxicity equivalency values for polychlorinated biphenyl mixtures
    Lawrence P Burkhard
    Mid Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, US Environmental Protection Agency, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 27:529-34. 2008
  7. ncbi Comparing laboratory and field measured bioaccumulation endpoints
    Lawrence P Burkhard
    US Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Integr Environ Assess Manag 8:17-31. 2012
  8. ncbi A hybrid empirical-mechanistic modeling approach for extrapolating biota-sediment accumulation factors and bioaccumulation factors across species, time, and/or ecosystems
    Lawrence P Burkhard
    U S Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 25:1946-52. 2006
  9. ncbi Comparison of biota-sediment accumulation factors across ecosystems
    Lawrence P Burkhard
    Mid Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U S Environmental Protection Agency, Duluth, Minnesota 55804, USA
    Environ Sci Technol 39:5716-21. 2005
  10. ncbi Biota--sediment accumulation factors for polychlorinated biphenyls, dibenzo-p-dioxins, and dibenzofurans in southern Lake Michigan lake trout (Salvelinus namaycush)
    Lawrence P Burkhard
    Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, US Environmental Protection Agency, Duluth, Minnesota 55804, USA
    Environ Sci Technol 38:5297-305. 2004

Detail Information

Publications16

  1. ncbi Factors influencing the design of bioaccumulation factor and biota-sediment accumulation factor field studies
    Lawrence P Burkhard
    U S Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 22:351-60. 2003
    ....
  2. ncbi Comparing laboratory- and field-measured biota-sediment accumulation factors
    Lawrence P Burkhard
    US Environmental Protection Agency USEPA, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Integr Environ Assess Manag 8:32-41. 2012
    ....
  3. ncbi Bioaccumulation data from laboratory and field studies: are they comparable?
    Lawrence P Burkhard
    US Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, MN 55804, USA
    Integr Environ Assess Manag 8:13-6. 2012
    ....
  4. ncbi Direct application of biota-sediment accumulation factors
    Lawrence P Burkhard
    U S Environmental Protection Agency, Mid Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 29:230-6. 2010
    ..e., < or =4.0x (< or =12x). The analysis was performed using a data set of 17,848 BSAFs spanning 392 chemicals/chemical combinations and 71 species...
  5. ncbi Organic carbon-water concentration quotients (II(SOC)S and pi(poc)S): measuring apparent chemical disequilibria and exploring the impact of black carbon in Lake Michigan
    Lawrence P Burkhard
    Mid Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U S Environmental Protection Agency, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Sci Technol 42:3615-21. 2008
    ....
  6. ncbi Toxicity equivalency values for polychlorinated biphenyl mixtures
    Lawrence P Burkhard
    Mid Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, US Environmental Protection Agency, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 27:529-34. 2008
    ..In comparison to the dioxin-like PCBs, few measurements have been performed for PCDD/Fs in the commercial PCB products...
  7. ncbi Comparing laboratory and field measured bioaccumulation endpoints
    Lawrence P Burkhard
    US Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Integr Environ Assess Manag 8:17-31. 2012
    ..e., biomagnification or biodilution, respectively. The proposed comparative bioaccumulation endpoint assessment method could therefore be considered for decision making in a chemicals management context...
  8. ncbi A hybrid empirical-mechanistic modeling approach for extrapolating biota-sediment accumulation factors and bioaccumulation factors across species, time, and/or ecosystems
    Lawrence P Burkhard
    U S Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 25:1946-52. 2006
    ....
  9. ncbi Comparison of biota-sediment accumulation factors across ecosystems
    Lawrence P Burkhard
    Mid Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U S Environmental Protection Agency, Duluth, Minnesota 55804, USA
    Environ Sci Technol 39:5716-21. 2005
    ....
  10. ncbi Biota--sediment accumulation factors for polychlorinated biphenyls, dibenzo-p-dioxins, and dibenzofurans in southern Lake Michigan lake trout (Salvelinus namaycush)
    Lawrence P Burkhard
    Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, US Environmental Protection Agency, Duluth, Minnesota 55804, USA
    Environ Sci Technol 38:5297-305. 2004
    ..On the basis of the association between chemicals with apparent slight rates of metabolism and measured dioxin-like toxicity, several PCDFs with similar measured BSAFs but unknown toxicity may be candidates for toxicity testing...
  11. ncbi Evaluation of two methods for prediction of bioaccumulation factors
    Lawrence P Burkhard
    Mid Continent Ecology Division, Office of Research and Development, National Health and Environmental Effects Research Laboratory, U S Environmental Protection Agency, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Sci Technol 37:4626-34. 2003
    ....
  12. ncbi The relationship of bioaccumulative chemicals in water and sediment to residues in fish: a visualization approach
    Lawrence P Burkhard
    U S Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 22:2822-30. 2003
    ....
  13. ncbi Complete elimination of carbonates: a critical step in the accurate measurement of organic and black carbon in sediments
    Marta T Lukasewycz
    US Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 24:2218-21. 2005
    ..There can be no significant differences among the OC and BC contents measured using the three different levels of acidification...
  14. ncbi In vitro-in vivo extrapolation of quantitative hepatic biotransformation data for fish. II. Modeled effects on chemical bioaccumulation
    John W Nichols
    U S Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, USA
    Environ Toxicol Chem 26:1304-19. 2007
    ....
  15. ncbi Workgroup report: review of fish bioaccumulation databases used to identify persistent, bioaccumulative, toxic substances
    Anne V Weisbrod
    Central Product Safety, The Procter and Gamble Company, Cincinnati, Ohio 45252, USA
    Environ Health Perspect 115:255-61. 2007
    ....
  16. ncbi Guidance for evaluating in vivo fish bioaccumulation data
    Thomas F Parkerton
    ExxonMobil Biomedical Sciences, Inc, Annandale, New Jersey, USA
    Integr Environ Assess Manag 4:139-55. 2008
    ..Use of these guidelines will foster development of more accurate QSPR models, improve the performance and reporting of future laboratory studies, and strengthen the technical basis for bioaccumulation assessment in chemicals management...