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。
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 re-sult 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, respec-tively. 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〉Huang-dun 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.
出处
《生物学杂志》
CAS
CSCD
2015年第4期30-34,共5页
Journal of Biology
基金
国家科技支撑项目(2011BAD13B08)
海洋公益性行业科研专项经费资助项目(201105009-3)
浙江省大学生科技创新活动计划暨新苗人才计划(2013R405029)
浙江省自然科学基金(Y5100369)
宁波市自然科学基金(2011A610015)
关键词
象山港
沉积物
重金属
风险评估
Xiangshan Bay
sediment
heavy metal
risk assessment
