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PCDD and PCDF contamination in catfish feed from Arkansas, USA
Institute of Environmental Chemistry, Umeå University, Umeå, Sweden .
Institute of Environmental Chemistry, Umeå University, Umeå, Sweden .
University of Bayreuth, Ecological Chemistry and Geochemistry, Bayreuth, Germany .ORCID iD: 0000-0003-1496-9245
Rutgers University, Cook College, New Brunswick, NJ, USA .
1998 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 36, no 13, p. 2705-2720Article in journal (Refereed) Published
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Abstract [en]

One combined catfish feed sample from Arkansas, USA, and its eight ingredients were analyzed for PCDDs and PCDFs. One of the ingredients, soybean meal, was highly contaminated by PCDDs, especially the toxic 2,3,7,8-substituted congeners, e.g. 7.3 pg/g dry weight or 370 pg/g lipid for the 2,3,7,8-tetra CDD. The I-TEQ value for the soybean meal was 11.4 pg/g dry weight or 576 pg/g fat. The corresponding values for the combined catfish feed concentrations were approximately 3 times lower. The congener pattern, the congener profile and the ratio Sigma PCDDs/Sigma PCDFs for the soybean meal were quite unique. We are not aware of any environmental sample or technical product with similar characteristics. As a result, natural formation of the PCDDs found in the soybean meal cannot be ruled out.

Place, publisher, year, edition, pages
Elsevier, 1998. Vol. 36, no 13, p. 2705-2720
Keywords [en]
catfish; catfish feed; soybean meal; polychlorinated dibenzo-p-dioxins; polychlorinated dibenzofurans; 2, 3, 7, 8-substitution; toxic equivalents; Arkansas; USA
National Category
Chemical Sciences Environmental Sciences
Research subject
Chemistry; Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-47642DOI: 10.1016/S0045-6535(98)00040-XISI: 000072912500001PubMedID: 9745703Scopus ID: 2-s2.0-0032104809OAI: oai:DiVA.org:oru-47642DiVA, id: diva2:901262
Available from: 2016-02-07 Created: 2016-01-19 Last updated: 2017-11-30Bibliographically approved

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