浙江主要港湾海域沉积物污染及潜在生态风险评价

发布时间：2018-01-13 17:24

本文关键词：浙江主要港湾海域沉积物污染及潜在生态风险评价　出处：《海洋环境科学》2017年04期 　论文类型：期刊论文

【摘要】：为了探讨浙江主要港湾海域表层沉积物中典型污染物污染水平和潜在生态环境影响,采用单因子指数法和Hakanson生态风险指数法,对2015年8月浙江主要港湾沉积物中PCB、Hg、Cd、As、Pb、Cu、Cr和Zn进行分析。结果表明,综合污染程度由重到轻为:乐清湾(12.14)温州湾(11.90)台州湾(11.36)三门湾(10.53)象山港(9.90)杭州湾(9.87),均属于中污染程度,各港湾的主要污染物为Cd和Cu;潜在生态风险由高到低为:杭州湾(157.04)温州湾(154.86)象山港(148.09)三门湾(146.24)台州湾(145.86)乐清湾(145.56),典型污染物在杭州湾和温州湾为中潜在生态风险,其余均为低潜在生态风险。杭州湾、象山港、三门湾和温州湾海域沉积物的主要环境风险因子为Cd和Hg,乐清湾海域沉积物的主要环境风险因子为Cd和Cu,台州湾海域沉积物的主要环境风险因子为Cd和PCB。
[Abstract]:In order to study the pollution level of typical pollutants and the potential ecological environmental impact in the surface sediments of the main estuaries in Zhejiang Province, single factor index method and Hakanson ecological risk index method were used. In August 2015, the Cr and Zn contents in the sediments of the main estuaries of Zhejiang Province were analyzed. The degree of comprehensive pollution from heavy to light is: Yueqing Bay 12.14) Wenzhou Bay 11.90) Taizhou Bay 11.36) Sanmen Bay 10.53) Xiangshan Port 9.90) Hangzhou Bay 9.87). . The main pollutants in each bay were CD and Cu. Potential ecological risk from high to low is: Hangzhou Bay 157.04) Wenzhou Bay 154.86) Xiangshan Port 148.09) Sanmen Bay 146.24) Taizhou Bay 145.86). Yueqing Bay 145.56). Typical pollutants in Hangzhou Bay and Wenzhou Bay are middle potential ecological risk, the others are low potential ecological risk. The main environmental risk factors of sediments in Hangzhou Bay, Xiangshan Port, Sanmen Bay and Wenzhou Bay are CD and Hg. The main environmental risk factors of sediment in Yueqing Bay were CD and Cu, and the main environmental risk factors in Taizhou Bay were CD and PCB.
【作者单位】：浙江省海洋监测预报中心;国家海洋局温州海洋环境监测中心站;
【分类号】：X55;X820.4
【正文快照】： 325013)沉积物是大多有机污染物和重金属的富集地,且在沉积物中可以通过悬浮、氧化还原反应和有机质的降解等过程,重新进入上覆水,从而提高溶解态污染物的浓度,对近岸海域生态系统影响大。国内外学者从沉积学角度提出了多种重金属的污染评价方法,如地质累积指数法[1]、质量基

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