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Levels of Organochlorine Compounds in Tuna Cultured Across Japanese Prefectures

This study examines the concentrations of various organohalogen compounds, including p,p’-DDE, trans-nonachlor, and HCB, found in tuna samples cultured in the Okinawa, Kagoshima, Kochi, Wakayama, and Mie Prefectures. Results are expressed on a wet weight basis, providing critical insight into the environmental impact of organochlorines in marine life. The research highlights regional differences in contamination levels, which are crucial for public health assessments and regulatory standards regarding seafood safety.

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Levels of Organochlorine Compounds in Tuna Cultured Across Japanese Prefectures

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  1. 1000 3500 900 PCBs p,p’-DDE 3000 800 Mie 700 2500 600 2000 500 Wakayama-II 1500 400 300 Wakayama-I 1000 200 500 100 Nagasaki 0 0 Kochi 500 300 450 Trans-nonachlor Q1 250 Kagoshima 400 350 200 Okinawa 300 250 150 (ng/wet g) 200 100 150 100 50 Mie 50 0 0 Wakayama-II 70 30 Wakayama-I 60 TBA HCB 25 50 Nagasaki 20 40 15 Kochi 30 10 20 Kagoshima 10 5 Okinawa 0 0 Figure S1. Levels of organohalogen compounds in toro samples of tuna cultured in Okinawa, Kagoshima, Kochi, Wakayama and Mie Prefectures, expressed by wet basis. See Table 1

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