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Biological half‐lives of chlorinated dibenzo‐ p ‐dioxins and dibenzofurans in rainbow trout ( Salmo gairdneri )
Author(s) -
Niimi A. J.,
Oliver B. G.
Publication year - 1986
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620050107
Subject(s) - rainbow trout , salmo , environmental chemistry , trout , chemistry , tetrachlorodibenzo p dioxin , fish <actinopterygii> , zoology , toxicity , toxicology , biology , fishery , organic chemistry
The biological half‐lives of five dibenzo‐ p ‐dioxins and two dibenzofurans were determined in rainbow trout following a single oral exposure. Estimated half‐lives ranged from 2 d for 2,7‐dichlorodibenzo‐ p ‐dioxin to 43 d for 1,2,3,4‐tetrachlorodibenzo‐ p ‐dioxin among the dioxins, and from 12 d for octachlorodibenzofuran to 24 d for 3,6‐dichlorodibenzofuran. No consistent relationship was shown between half‐life and the degree of chlorination. Absorption efficiencies varied from 2 to greater than 30%, although most values ranged from 5 to 16%.