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2177331 
Journal Article 
PCB residues in feedlot steers 
Ross, PF; Osheim, DL; Nelson, HA 
1981 
Yes 
Bulletin of Environmental Contamination and Toxicology
ISSN: 0007-4861
EISSN: 1432-0800 
PESTAB/81/2138 
26 
4 
485-488 
English 
6786398 
WOS:A1981LN50400009 
PESTAB. Tailhead fat biopsies were collected from feedlot steers after 5 mo exposure to PCBs in transformer oil used as an insecticide carrier in a backrubber. PCB concentration in fat samples ranged from 70-2200 ppm, with an average of 470 ppm. The extremely high levels of PCB present in the samples allowed a relatively simple extraction procedure to be used. Without exception all 113 biopsy samples had identical chromatographic profiles, with only small differences in relative amounts of each peak. Chromatograms of unexposed beef fat extracts showed no detector response in the region where the PCBs eluted. 
IRIS
• PCBs
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