江苏滨海北部近岸海域海洋环境现状调查及风险评价

本文对2019年秋季江苏滨海北部近岸海域水质和沉积物环境进行了调查，分析研究结果表明：水质主要超标因子为化学需氧量、无机氮、活性磷酸盐、Cu、Pb和Cd；沉积物中As和硫化物超过第一类沉积物质量标准，但满足第二类海洋质量标准，其他指标均符合第一类沉积物质量标准。采用地累积指数法和潜在生态风险指数法进行评价，沉积物重金属除Cd外，潜在生态风险整体为低风险，单因子生态风险由高到低为Cd>Hg>As>Pb>Cu>Cr>Zn。

Investigation and Risk Assessment of the Marine Environment in the Northern Binhai of Jiangsu Province

In the autumn of 2019, an investigation was conducted on the water quality and sediment status in the coastal waters between the Zhongshan estuary and the Binhai port in the north of the coast. The results showed that the main factors that exceeded the standard were chemical oxygen demand, inorganic nitrogen, active phosphate, and Cu, Pb and Cd in heavy metals. The heavy metals As and sulfide in the marine sediment monitoring project exceeded the national class I sediment quality standard, but met the national class II marine quality standard, and the others met the class I sediment quality standard. The potential ecological risk of heavy metals in sediments in the investigated sea area was low except Cd. The single factor ecological risk of heavy metals in sediments was Cd > Hg >As > Pb > Cu > Cr > Zn from high to low.