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Environmental fate & pathways

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Rainbow trout (Oncorhynchus mykiss) were exposed to commercial diet treated with radiolabeled test material at a nominal concentration of 1000 µg/g over a 14-day exposure period followed by a depuration period of 28 days, under continous flow-through conditions at 14 deg C. No mortalities or sub lethal effects of exposure were observed through the test.

Radioactivity was accumulated in fish tissues following exposure to feed treated with the test material for 14 days. The biomagnification factor and the lipid normalized biomagniication factor corrected for growth rate were estimated to be less than 1. The growth corrected half life was estimated to be 24.1 days.

At Day 28 of the depuration phase, eliminated radioactivity accounted for approximately two half lives of that which had been accumulated.