The ammount and identity of residues in bluegills (Lepomis macrochirus) exposed to triclopyr

Lickly, TD.; Murphy, PG.

Environment International 132: 213-218


ISSN/ISBN: 0160-4120
Accession: 021886305

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The level and identity of 14C residues in bluegills (Lepomis macrochirus) exposed to 2.5 mg/L 14C triclopyr (3,5,6-trichloro-2-pyridinyloxyacetic acid) have been determined. The highest level of radioactivity observed in the flesh of a fish at any time point (0.13 mg/kg, calculated as equivalent mg triclopyr/kg fish) was less than 5% of the fish exposure level of 2.5 mg/L, while the maximum level in the remainder (head, skin, and viscera) was about 95% (2.33 mg/kg) of the fish exposure level, indicating no concentrating effect. The principal components observed in the fish tissues were triclopyr, 3,5,6-trichloro-2-pyridinol, 2-methoxy-3,5,6-trichloropyridine and a conjugate. These components accounted for greater than 75% of all the residues observed.