海州湾渔港经济区及邻近海域沉积物主要污染物分布特征和潜在风险

本文利用2021年8月海州湾渔港经济区及邻近海域表层沉积物中的主要污染物调查结果，讨论分析了调查海域沉积物中污染物的分布特征及生态风险。结果表明：海州湾渔港经济区沉积物中石油类、有机碳、Cu、Zn、Pb、Cd、Cr、Hg、As的含量都高于渔港邻近海域沉积物；有机碳、石油类、Zn、Cd、Cr、Hg的含量总体上从渔港向邻近...

Distribution characteristics and potential risks of major pollutants in sediments of fishing port economic zone and adjacent waters of Haizhou bay

Based on investigations of major pollutants in sediments of fishing port economic zone and adjacent waters in Haizhou bay in August, 2021, distribution characteristics of the pollutants were discussed and their ecological risks were evaluated. The results showed that the contents of petroleum, organic carbon, Cu, Zn, Pb, Cd, Cr, total Hg and As in fishing port economic zone were higher than that in their adjacent waters in Haizhou bay. The contents of organic carbon, petroleum, Zn、Cd、Cr and total Hg significantly decreased from the fishing port to the adjacent sea area, while the content of sulfide generally increased from the fishing port to the adjacent sea area. The contents of Cu, Pb and As were lowest in harbor entrance, generally increasing from the entrance to fishing port and the adjacent sea area. Petroleum in the sediments in some fishing port of Haizhou bay exceeded the national first-class sediment quality standards. The comprehensive potential ecological risk of heavy metals in investigated area were low on the whole, but the fishing port economic zone is at the medium ecological risk level, among which the total Hg and Cd potential ecological risk factors are large.