A simple apparatus for administering 2,3,7,8-tetrachlorodibenzo-p-dioxin to commercially available pelletized fish food

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 marga...

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Bibliographic Details
Published in:Environmental toxicology and chemistry 1998-10, Vol.17 (10), p.2058-2062
Main Authors: Fernandez, Joseph D., Denny, Jeffrey S., Tietge, Joseph E.
Format: Article
Language:English
Subjects:
2,3,7,8‐Tetrachlorodibenzo‐p‐dioxin
8-Tetrachlorodibenzo-p-dioxin
Animal, plant and microbial ecology
Aparatus construction
Applied ecology
Biological and medical sciences
Chemical loading
Ecotoxicology, biological effects of pollution
Fundamental and applied biological sciences. Psychology
Pelletized food
Techniques
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Summary: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%.
ISSN:0730-7268
1552-8618
DOI:10.1002/etc.5620171023