Contents of Mercury, Methylmercury, and Selenium in Deep-Sea Fishes
2023
Cho, Y.S. | Hwang, S.I. | Shin, S.W. | Kim, H.J. | Lee, J.Y. | Song, J.W. | Kim, J.E. | Lee, B.H. | Mo, A.R. | Park, M.K.
This study aimed to determine mercury (Hg), methylmercury (MeHg), and selenium (Se) levels in deep-sea fishes distributed in Gyeonggi-do, South Korea. Concentrations of Hg, MeHg, and Se were measured by using a mercury analyzer and Inductively Coupled Plasma – Mass Spectrometry (ICP-MS). The average content (mg/ kg) in the seafood samples was as follows: Hg, 0.7647 (0.0182–5.3620), MeHg, 0.0764 (0.0096–0.8750), and Se, 0.4728 (0.1075–3.5100). All the levels of MeHg were below the recommended standards of the Ministry of Food and Drug Safety i.e., <1.0 mg/kg. Recent studies have shown that Se prevents Hg toxicity. The average daily intake in humans was 3.3 µg/kg, which was lower than the recommended amount (50–200 µg/person/day). The weekly intake of Hg and MeHg was calculated to be 6.07% and 1.90%, respectively, of the provisional tolerable weekly intake (PTWI). This study showed that the weekly intake of Hg and MeHg from abyssal fish was less than the PTWI recommended by the Joint FAO/WHO expert committee on food additives. Therefore, the levels reported in this study are presumed to be adequately safe.
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