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11-08-2010, 02:52 PM #1
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Biological half-lives of eight polycyclic aromatic hydrocarbons (PAHs) in rainbow tro
By A. J. Niimi, V. Palazzo
Water Research, Volume 20, Issue 4, April 1986, Pages 503-507, ISSN 0043-1354, DOI: 10.1016/0043-1354(86)90200-9.
Adult rainbow trout were exposed to a single oral dose containing a mixture of eight PAHs, and fish were sampled at intervals between 5-48 days after exposure. Regression analyses on whole fish indicate levels declined significantly in four of the compounds monitored. Their biological half-lives were estimated as 9 days for phenanthrene, 7 days for fluorene and anthracene and 6 days for fluoranthene. No reliable estimates could be derived for benzo[a]pyrene, benz[a]anthracene, chrysene or pyrene because of low or nondetectable concentrations at the first sample interval although it could be suggested that their half-lives would be less than several days. The data also suggested that these PAHs are poorly absorbed by trout.
Keywords: anthracene; benz[a]anthracene; benzo[a]pyrene; chrysene; fluoranthene; fluorene; phenanthrene; pyrene; elimination; toxicology; trout