Occurrence of polybrominated diphenyl ethers and polychlorinated biphenyls in shark liver oil supplements |
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Authors: | Kazuhiko Akutsu Yukio Tanaka Kazuichi Hayakawa |
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Affiliation: | a Division of Food Chemistry, Osaka Prefectural Institute of Public Health, Higashinari-ku, Osaka 537-0025, Japanb Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan |
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Abstract: | Results are reported of a pilot survey of concentrations of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) in shark liver oil supplements. Eleven brands of dietary supplements were analysed using an isotope dilution GC/MS method. Total concentrations of 10 PBDE congeners (BDE-28, -47, -49, -66, -99, -100, -153, -154, -155 and -183) ranged from 0.1 to 53 ng g-1 oil weight and total concentrations of six PCB congeners (CB-28/31, -52, -118, -153 and -180) in the samples ranged from 16 to 340 ng g-1 oil weight (undetected values are not included). Two brands of Japanese deep-sea shark liver oil contained the highest levels of PBDEs (49-53 ng g-1 oil weight) and PCBs (290-340 ng g-1 oil weight). These results indicate that PBDEs may have entered Japanese deep-sea waters. |
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Keywords: | Dietary supplements shark liver oil polybrominated diphenyl ethers polychlorinated biphenyls |
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