School of Marine Sciences, Ningbo University, Ningbo 315832, China; Ningbo Institute of Oceanography, Ningbo 315832, China.
School of Marine Sciences, Zhuhai Key Laboratory of Marine Bioresources and Environment, Guangdong Provincial, Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-Sen University, Zhuhai 519082, China, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China, Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai 519082, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China; Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai 519082, China.
Mar Pollut Bull. 2022 Aug;181:113872. doi: 10.1016/j.marpolbul.2022.113872. Epub 2022 Jun 24.
Historical records of eight heavy metals (HMs: Cu, Zn, Cr, Ni, Pb, As, Hg and Cd) were analyzed in two dated sediment cores collected from the coastal East China Sea (Meishan Bay, MSB) to investigate the influence of anthropogenic activities on estuary sediment from 1972 to 2019. The sedimentary records of HMs in the two cores reflected the development of economy and change of energy consumption in China's east coastal areas. The contents of most HMs in sediments had no change or showed a downward trend before the 1980s. After the 1980s, the contents of HMs showed an increasing trend, mainly because of the rapid development of aquaculture, industry, and agriculture. The distribution of HMs outside the bay (OB) was mainly affected by industry, shipping, and agriculture (vegetable planting), while HMs in sediments inside the bay (IB) was affected by shipping, agriculture, and aquaculture. Principle component analysis (PCA) showed that Cd, Cr, and Ni could be attributed to industrial discharge, while As, Cu, Pb, and Zn were associated with shipping, agriculture, and aquaculture. Sediments were slightly polluted with Cd (I:0.10-0.71, CF:1.90-7.74) and Ni (I:0.08-0.92, CF:1.25-12.55), and seriously polluted with Hg (I:0.95-1.76, CF:13.43-85.65). This study provides insights for the local governments to raise awareness of HM pollution in the coastal East China Sea and formulate corresponding pollution control measures.
对取自中国东海（湄洲湾，MSB）的两个定年沉积物岩芯中 8 种重金属（HM：Cu、Zn、Cr、Ni、Pb、As、Hg 和 Cd）的历史记录进行了分析，以调查人为活动对 1972 年至 2019 年河口沉积物的影响。两个岩芯中 HM 的沉积记录反映了中国东海岸地区经济的发展和能源消耗的变化。在 20 世纪 80 年代之前，沉积物中大多数 HM 的含量没有变化或呈下降趋势。20 世纪 80 年代后，HM 的含量呈上升趋势，主要是由于水产养殖、工业和农业的快速发展。湾外（OB）HM 的分布主要受工业、航运和农业（蔬菜种植）的影响，而湾内（IB）沉积物中的 HM 则受航运、农业和水产养殖的影响。主成分分析（PCA）表明，Cd、Cr 和 Ni 可归因于工业排放，而 As、Cu、Pb 和 Zn 与航运、农业和水产养殖有关。沉积物中 Cd（I：0.10-0.71，CF：1.90-7.74）和 Ni（I：0.08-0.92，CF：1.25-12.55）污染轻微，Hg（I：0.95-1.76，CF：13.43-85.65）污染严重。本研究为地方政府提供了对东海沿海地区重金属污染的认识，并制定了相应的污染控制措施。
