Abstract
Rainbow trout (Oncorhynchus mykiss) were exposed to nine resin acids that included abietic, dehydroabietic, chlorodehydroabietic, dichlorodehydroabietic, neoabietic, pimaric, isopimaric, sandaracopimaric, and palustric acids. Bioconcentration factors (BCFs) for these acids ranged from P < 0.01) between decreasing percentage of conjugated/total acid and increasing BCF. Elimination rates were also monitored over a 10‐d period, although no detectable levels were observed. Based on initial chemical concentrations, it was concluded that the half‐lives of these acids were <4 d.

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