Key Laboratory of Engineering Oceanography, Second Institute of Oceanography, Ministry of Natural Resource of the People's Republic of China, Hangzhou, 310012, China.
College of Marine Science & Technology, Zhejiang Ocean University, Zhoushan, 316022, China.
Environ Sci Pollut Res Int. 2021 Jul;28(26):34642-34654. doi: 10.1007/s11356-021-12923-9. Epub 2021 Mar 2.
Metal contamination in fishery water may pose a serious threat to aquatic products and human health. In this study, the contents of seven trace metals were assessed in water, sediment, and ten commercially important species (seven fish and three crustaceans) with different trophic guilds, habitat preferences, and motility, collected from the Zhoushan Fishery, northwest East China Sea. In general, the results showed that the concentrations of trace metals in water and sediment were lower than the safety thresholds set by the National Seawater Quality Standard of China and the sediment quality guidelines, except for Cu, As, and Cr in sediment. The high metal concentrations were spatially distributed in the west of the Zhoushan Fishery, which is probably due to the chemical pollution generated from many large international ports and chemical industries in Hangzhou Bay. The metal concentrations in the species were lower than the legislation thresholds established by the Commission Regulation and China National Standard, except for Cd in two crustacean species. However, a health risk assessment indicated that the consumption of the analyzed seafood is safe. However, there is a potential risk to local consumers who prefer crustaceans. From a species-specific bioaccumulation point of view, species in high trophic guilds, benthivores, species with low motility, or those living near the sediment have been found to be most likely to accumulate metals. Our findings could contribute to the understanding of the accumulation tendencies of metals in species of different trophic guilds with varying habitat preferences and motility and provide valuable data to environmental and seafood safety managers.
渔业水域的金属污染可能对水产养殖产品和人类健康造成严重威胁。本研究评估了中国东海舟山渔场的水体、沉积物以及十种具有不同营养级、生境偏好和运动能力的商业上重要的物种（七种鱼类和三种甲壳类动物）中的七种痕量金属含量。总体而言，研究结果表明，除了沉积物中的 Cu、As 和 Cr 以外，水体和沉积物中的痕量金属浓度均低于中国海水水质标准和沉积物质量基准中规定的安全阈值。高金属浓度在舟山渔场的西部呈现出空间分布，这可能是由于杭州湾地区许多大型国际港口和化工企业产生的化学污染所致。除了两种甲壳类动物中的 Cd 以外，各物种中的金属浓度均低于委员会法规和中国国家标准规定的法规阈值。然而，健康风险评估表明，所分析的海鲜的食用是安全的。但是，偏好甲壳类动物的当地消费者存在潜在风险。从物种特异性生物累积的角度来看，处于高营养级、底栖食性、运动能力低或生活在沉积物附近的物种更容易积累金属。本研究结果有助于了解不同营养级、生境偏好和运动能力的物种对金属的累积趋势，并为环境和海鲜安全管理者提供有价值的数据。
