CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China.
CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
Sci Total Environ. 2019 Jul 10;673:768-776. doi: 10.1016/j.scitotenv.2019.04.099. Epub 2019 Apr 9.
Bioaccumulation and human health risks of essential and toxic metals in ten species of freshwater products from Northeast China were investigated in this study. The concentrations (mg/kg wet weight) of target metals in aquatic products were: Fe (4.6-165.4), Zn (4.1-33.4), Mn (0.28-80.0), Cu (0.24-15.8), Cr (0.074-0.80), As (0.0068-0.72), Hg (0.016-0.58), Ni (0.019-0.58), Pb (0.017-0.27) and Cd (0.0004-0.058). There was no significant regional difference of target metal levels in fish samples between Liaoning province and Inner Mongolia Autonomous Region according to matched sample t-test. Every daily intakes (EDI) of target metals from freshwater products were far below their corresponding limits. However, health risk assessment of individual metal in freshwater products showed methyl mercury (MeHg) and Mn could pose potential noncarcinogenic risk to human, and inorganic arsenic (iAs) would cause potential carcinogenic risk to consumers at the level of 1 in 100,000. Furthermore, freshwater product species-specific bioaccumulation characteristics for different metals are quite different. The total hazard quotients of target metals in different aquatic product species demonstrated that co-exposure of target metals by consumption of these six species (C. auratus, E. sinensis, C. erythropterus, C. carpio, M. anguillicaudatus and O. cantor) from Northeast China could cause potential noncarcinogenic risk to human, and the pollution of toxic metals in E. sinensis and C. auratus were most serious among all investigated aquatic species.
本研究调查了中国东北地区十种淡水产品中必需和有毒金属的生物累积和对人类健康的风险。水产品中目标金属的浓度（湿重毫克/公斤）为：Fe（4.6-165.4）、Zn（4.1-33.4）、Mn（0.28-80.0）、Cu（0.24-15.8）、Cr（0.074-0.80）、As（0.0068-0.72）、Hg（0.016-0.58）、Ni（0.019-0.58）、Pb（0.017-0.27）和 Cd（0.0004-0.058）。根据配对样本 t 检验，辽宁省和内蒙古自治区鱼类样本中目标金属水平无显著区域差异。从淡水产品中摄入的目标金属的每日摄入量（EDI）远低于其相应限量。然而，对淡水产品中个别金属的健康风险评估表明，甲基汞（MeHg）和 Mn 可能对人类造成潜在的非致癌风险，无机砷（iAs）在 1/10 万的水平下对消费者可能造成潜在的致癌风险。此外，不同金属在淡水产品中的物种特异性生物累积特征差异很大。不同水生物种目标金属的总危害系数表明，食用这六种鱼类（C. auratus、E. sinensis、C. erythropterus、C. carpio、M. anguillicaudatus 和 O. cantor）会对人类造成潜在的非致癌风险，并且 E. sinensis 和 C. auratus 中有毒金属的污染最为严重所有调查的水生物种。
