Institute of Polar Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, China.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2013;48(12):1491-501. doi: 10.1080/10934529.2013.796820.
Fish consumption is an important source of human exposure to heavy metals. To determine the health risks for metals by consumption of marine fish in China, three species of fish, namely large yellow croaker (Pseudosciaena crocea), small yellow croaker (Pseudosciaena polyactis) and silver pomfret (Pampus argenteus) were collected and analyzed for methylmercury (MeHg), total mercury (T-Hg), selenium, cadmium, cobalt, chromium, copper, iron, manganese, nickel, lead, strontium and zinc. The large yellow croakers had the highest concentrations of mercury, lead, nickel and zinc, and the levels of MeHg were positively correlated to T-Hg. The ratios of MeHg to T-Hg in yellow croakers were significantly higher than those in silver pomfret, indicating differences in accumulation and magnification of MeHg in these two types of fish. The concentration of T-Hg was found to decrease as the Se level in fish tissues increased. Cadmium levels in 16% of the samples were higher than the criterion recommended by the European Commission Regulation. The concentrations of other metals were well below international standards. A human health risk assessment showed that the estimated daily intake of these metals did not exceed the reference dose established by the US Environmental Protection Agency. The hazard quotients (HQs) were all less than 1, indicating a situation of no risk for consumption of these fish.
鱼类消费是人类接触重金属的重要来源。为了确定中国食用海洋鱼类对金属的健康风险，采集了三种鱼类，即大黄鱼（Pseudosciaena crocea）、小黄鱼（Pseudosciaena polyactis）和银鲳（Pampus argenteus），并对其进行了甲基汞（MeHg）、总汞（T-Hg）、硒、镉、钴、铬、铜、铁、锰、镍、铅、锶和锌的分析。大黄鱼的汞、铅、镍和锌含量最高，且 MeHg 与 T-Hg 呈正相关。小黄鱼中 MeHg 与 T-Hg 的比值明显高于银鲳，表明这两种鱼对 MeHg 的积累和放大存在差异。研究发现，随着鱼组织中硒水平的增加，T-Hg 的浓度降低。16%的样本中镉含量高于欧盟委员会法规推荐的标准。其他金属的浓度均远低于国际标准。对人类健康风险评估显示，这些金属的估计日摄入量未超过美国环境保护署制定的参考剂量。危害系数（HQ）均小于 1，表明食用这些鱼类不存在风险。
