Exposure of man to environmental PCBs--an exposure commitment assessment

The Science of the Total Environment
B G Bennett

Abstract

Polychlorinated biphenyls have been widely used in industry, but because of recognised environmental and human health hazards are now mostly restricted to closed electrical systems. PCBs are extremely stable compounds and are persistent in the environment once released. Representative values of PCB concentrations in the background environment and in man are selected from available data and a pathway analysis is performed utilizing the exposure commitment method. Dietary intake of PCBs is quite variable depending primarily on consumption of contaminated fish. Representative intake of 24 micrograms d -1 may be associated with concentrations in man of 0.35 mgkg -1 of body weight, from which a mean residence time in the body of 3 years may be inferred. Diminished intake and body concentrations should eventually become evident, reflecting reduced industrial usage and releases to the environment of PCBs. The exposure evaluation accounts also for secondary pathways to man from PCBs in air and drinking water. The analysis provides a framework for assessment of PCB movements through the environment in pathways to man. The estimates of transfer factors obtained from representative background levels should be generally relevant and may be...Continue Reading

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Citations

Dec 1, 1988·Bulletin of Environmental Contamination and Toxicology·J Jan, M Tratnik
Jun 1, 1986·The Science of the Total Environment·K C Jones, B G Bennett
Jul 1, 1990·Neurotoxicology and Teratology·J L JacobsonH E Humphrey
Nov 28, 2002·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·I Costabeber, T Emanuelli
Jul 1, 1991·Food Additives and Contaminants·J Jan, M Adamic
Jan 1, 1995·Critical Reviews in Toxicology·R D Kimbrough
Nov 1, 1985·The Science of the Total Environment·D J Davies, B G Bennett
Oct 12, 2005·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·I CostabeberT Emanuelli
May 13, 1998·Archives of Environmental Health·E DeVotoW Heeschen
May 1, 1993·Environmental Monitoring and Assessment·R Kucharski, E Marchwińska

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