Key Laboratory of Ocean Space Resource Management Technology, Ministry of Natural Resources, Hangzhou 310012, China; Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China; International Research Center for Marine Biosciences, Shanghai Ocean University, Ministry of Science and Technology, College of Fisheries and Life Science, Shanghai 201306, China; Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China.
Bureau of Hydrology (Information Center) of Huaihe River Commission, Ministry of Water Resources, Bengbu 233001, China.
J Hazard Mater. 2024 Jan 5;461:132603. doi: 10.1016/j.jhazmat.2023.132603. Epub 2023 Sep 21.
Microplastics (MPs) are a widespread environmental problem posing ecological risks in the ocean. We investigated the abundance, spatial distribution, characteristics and ecological risks of MPs in surface seawater, sediments and organisms in Yueqing Bay, China. MPs were detected in both environmental media and organisms. The overall abundance (0.24 items/m seawater, 6.13 items/kg dry sediment, 0.77 items/individual in organisms) was low to medium compared with other coastal areas. The MPs were mainly derived from the high-intensity mariculture and shipping in the bay, as well as industrial and human activities along the surrounding coast. The abundance of MPs in water of the left (western) bay (0.39 items/m) was considerably higher than that of the right (north-eastern) bay (0.07 items/m) due to the different levels of population and economic development on the left and right coasts. The ecological risk assessment showed generally low to medium risk from MPs pollution in Yueqing Bay, with higher ecological risk index (H) and potential ecological hazards (RI) of MPs polymers in water samples. These data emphasize the need for timely and effective action to reduce the contribution of intensive human activities to MPs pollution and provide information for further ecotoxicological studies, pollution control, and policy development of MPs.
微塑料（MPs）是一种广泛存在的环境问题，对海洋生态系统构成了风险。本研究调查了中国乐清湾海域表层海水、沉积物和生物体中 MPs 的丰度、空间分布、特征和生态风险。在环境介质和生物体中均检测到 MPs。与其他沿海地区相比，该地区 MPs 的总体丰度（海水中为 0.24 个/毫升，沉积物中为 6.13 个/千克干重，生物体中为 0.77 个/个体）处于低-中水平。这些 MPs 主要来源于湾内高强度的海水养殖和航运活动，以及周边沿海地区的工业和人类活动。由于左右两岸的人口和经济发展水平不同，左（西）湾的海水中 MPs 丰度（0.39 个/毫升）明显高于右（东北）湾（0.07 个/毫升）。生态风险评估结果表明，乐清湾 MPs 污染总体处于低-中风险水平，其中水样中 MPs 聚合物的生态风险指数（H）和潜在生态危害（RI）较高。这些数据强调了需要及时采取有效行动，减少人类活动对 MPs 污染的贡献，并为进一步的 MPs 生态毒理学研究、污染控制和政策制定提供信息。
