【摘要】 于2011—2012年,对象山港12个站位表层沉积物进行周年季节性采样,测定了Ni、Cu、Zn、As、Pb和Ba 6种重金属含量,并对其生态风险进行了评估。结果显示,象山港Ni、Cu、Zn、As、Pb和Ba的年平均含量分别为44.45、37.49、134.42、28.96、31.96、556.96 mg/kg,其中,Ni、Cu、Zn和As最高含量发生在西沪港,而Pb和Ba的最高含量发生在黄墩港。与国家海洋沉积物质量I类标准相比,As和Zn超标率分别为44.8%和7.1%。据潜在生态风险指数评价结果,各海域污染程度顺序为西沪港>港口区>狭湾>黄墩港>铁港区,各重金属的污染程度顺序为:As>Ni>Pb>Cu>Ba>Zn;按照生物毒性评价结果,6种重金属基本不会产生生物毒性。更多还原

【Abstract】 In 2011-2012, seasonal surface sediments were sampled from 12 stations of Xiangshan Bay, the concentrations of 6 heavy metals including Ni, Cu, Zn, As, Pb, and Ba were analyzed and the potential ecological risks of heavy metals were evaluated. The result showed that average contents of Ni, Cu, Zn, As, Pb and Ba were 44. 45, 37. 49, 134. 42, 28. 96, 31. 96 and 556. 96 mg/kg, respectively. Compared with the China marine sediment quality I, the over standard rates of As and Zn were 44. 8% and 7. 1%, respectively.Potential ecological risk factors indicated that the order of the pollution degree in each zone is Xihu Gang> Port area> Fjord> Huangdun Gang> Tie Gang, the risk index of 6 heavy metals were in order of As> Ni> Pb> Cu> Ba> Zn. The result of toxicity evaluation showed that 6 heavy metals will not bring toxic effect.更多还原