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A simple apparatus for administering 2,3,7,8‐tetrachlorodibenzo‐ p ‐dioxin to commercially available pelletized fish food
Author(s) -
Fernandez Joseph D.,
Denny Jeffrey S.,
Tietge Joseph E.
Publication year - 1998
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.5620171023
Subject(s) - fish <actinopterygii> , hexane , chemistry , food science , tetrachlorodibenzo p dioxin , coefficient of variation , environmental chemistry , zoology , chromatography , biology , fishery , organic chemistry , toxicity
A simple apparatus for loading chemicals onto commercially available, pelletized fish food is described. An analysis of several food nutrients indicated the procedure using n ‐hexane (50 ml n ‐hexane:200 g food) had an inconsequential influence on their concentrations, i.e., only lauric acid and margaroleic acid exhibited reductions ≥ 10%, 25%, and 17%, respectively. Of 35 batches of food laden with 2,3,7,8‐tetrachlorodibenzo‐ p ‐dioxin (TCDD), only 40% of the loadings were within 10% of the desired value. However, in terms of the within‐batch variability, all loadings exhibited a coefficient of variation (CV) ≤15%, and over 60% of the loadings exhibited a CV ≤10%.