Mass balance of polychlorinated biphenyls and other organochlorine compounds in a lactating cow

Journal Article · Mon Mar 01 00:00:00 EST 1993 · Journal of Agricultural and Food Chemistry; (United States)

DOI:https://doi.org/10.1021/jf00027a024· OSTI ID:6523583

McLachlan, M S ^[1]

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1. Univ. of Bayreuth (Germany)

A contaminant mass balance was conducted of a lactating cow in its natural state. PCBs, HDHs, DDE, DDT, HCB, and several other chlorinated substances were investigated. It was found that virtually all of the cow's exposure was through feed. The contaminant absorption in the cow and hence the carry-over rate of persistent compounds was found to be a function of K[sub ow], with approximately constant values up to a log K[sub ow] of 6.5 and thereafter rapidly decreasing absorption with increasing lipophilicity of the contaminant. The key to PCB persistence in the cow was the 4,4[prime] substitution pattern. The 2,3,5 substitution was a less effective hindrance for PCB metabolism. 33 refs., 2 figs., 7 tabs.

• OSTI ID: 6523583
• Journal Information: Journal of Agricultural and Food Chemistry; (United States), Vol. 41:3; ISSN 0021-8561
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
60 APPLIED LIFE SCIENCES
ANIMAL FEEDS
CONTAMINATION
POLYCHLORINATED BIPHENYLS
ENVIRONMENTAL EXPOSURE PATHWAY
TOXIC MATERIALS
INTAKE
COWS
DDT
ENVIRONMENTAL EXPOSURE
FOOD CHAINS
MEAT
MILK
MILK PRODUCTS
ANIMALS
AROMATICS
BIOLOGICAL MATERIALS
BODY FLUIDS
CATTLE
CHLORINATED AROMATIC HYDROCARBONS
DOMESTIC ANIMALS
FOOD
HALOGENATED AROMATIC HYDROCARBONS
HAZARDOUS MATERIALS
INSECTICIDES
MAMMALS
MATERIALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PESTICIDES
RUMINANTS
VERTEBRATES
560300* - Chemicals Metabolism & Toxicology
553004 - Agriculture & Food Technology- Food Protection & Preservation- (1987-)