北戴河及相邻海域沉积物重金属潜在生态危害评价

摘要

A long-term and large-scale survey of Cu,Pb,Cd,and Zn in sediment of Beidaihe coastal area was conducted in spring,summer,and autumn from 201 1 to 2012.The spatial distribution of concentrations of these heavy metals and their potential ecological risks were analyzed using the single factor pollution index,multiple eco-logical risk index,and the potential ecological risk index.The result showed that the content of heavy metals is in-creasing from the costal area of Funing to its two wings.The harbor area was facing relatively more serious pollution than other areas,followed by Shanhaiguan costal area,Beidaihe costal area,Changli costal area,and Funing costal area.The contents of all heavy metals were not over the first grade standard of the marine sediment standard,which indicated a light ecological harm at present.%根据2011年和2012年春夏秋三季长时间、大范围的对北戴河及相邻海域沉积物重金属（Cu、Pb、Cd、Zn）的调查结果，通过单因子污染指数、综合生态危害指数、潜在生态危害指数等评价方法，分析北戴河及相邻海域沉积物重金属的含量分布趋势及潜在生态危害。研究结果表明，整个近岸海域沉积物重金属的含量有从抚宁近岸向两侧逐渐升高的趋势。海港区近岸海域重金属污染相对较严重，之后依次是山海关近岸海域、北戴河近岸海域、昌黎近岸海域和抚宁近岸海域。所有监测站位的重金属要素含量均未超出一类海洋沉积物标准，属于轻微生态危害。