苏州市吴江区农村河流水、沉积物和水生生物中重金属污染情况与生态健康风险评价
摘要
目的研究苏州市吴江区农村河流水、沉积物和水生生物中重金属污染情况与生态健康风险。方法检测苏州市吴江区农村三种区域的河流水、沉积物和水生生物中6种重金属浓度,评估水生生物中重金属的生物累积以及潜在的生态风险和健康风险。结果河流水、沉积物和水生生物的6种重金属浓度中Zn浓度最高而Cd浓度最低;三种区域的河流水、沉积物和水生生物中6种重金属浓度遵循混合区>住宅区>农业区的顺序;螺蛳的Cr、Cu、Pb和Zn的BCF值高于金鱼藻,Cd和Ni的BCF值低于金鱼藻;对沉积物中重金属的生态风险评估表明Cd对环境的生态风险最大,健康风险评估显示食用混合区的螺蛳可能会造成潜在的健康风险。结论苏州市吴江区农村河流水、沉积物和水生生物中受到一定程度的重金属污染,尤其应该注意食用水产品时会产生潜在重金属健康风险。
引文
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[4]Bonanno G,Borg JA,Di Martino V.Levels of heavy metals in wetland and marine vascular plants and their biomonitoring potential:A comparative assessment[J].Sci Total Environ,2017,576:796-806.
[5]G?tze S,Bose A,Sokolova IM,et al.The proteasomes of two marine decapod crustaceans,European lobster(Homarus gammarus)and Edible crab(Cancer pagurus),are differently impaired by heavy metals[J].Comp Biochem Physiol C Toxicol Pharmacol,2014,162:62-9.
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[9]Hakanson L.An ecological risk index for aquatic pollution control.a sedimentological approach[J].Water Res,1980,14(8):975.
[10]Qian QT,Li CW,Zhao M,et al.[Identification of the critical coastal conservation areas with ecological significance based on Pb stable isotope signatures analysis][J].Ying Yong Sheng Tai Xue Bao,2017,28(7):2307-2314.
[11]Sheykhi V,Moore F.Evaluation of potentially toxic metals pollution in the sediments of the Kor river,southwest Iran[J].Environ Monit Assess,2013,185(4):3219-32.
[12]Tao Y,Yuan Z,Xiaona H,et al.Distribution and bioaccumulation of heavy metals in aquatic organisms of different trophic levels and potential health risk assessment from Taihu lake,China[J].Ecotoxicol Environ Saf,2012,81:55-64.
[13]Hang X,Wang H,Zhou J,et al.Risk assessment of potentially toxic element pollution in soils and rice(Oryza sativa)in a typical area of the Yangtze River Delta[J].Environ Pollut,2009,157(8-9):2542-9.
[14]Zheng N,Wang Q,Zhang X,et al.Population health risk due to dietary intake of heavy metals in the industrial area of Huludao City,China[J].Sci Total Environ,2007,387(1-3):96-104.
[15]魏复盛,杨国治,蒋德珍,等.中国土壤元素背景值基本统计量及其特征[J].中国环境监测,1991,(01):1-6.
[16]Yi Y,Yang Z,Zhang S.Ecological risk assessment of heavy metals in sediment and human health risk assessment of heavy metals in fishes in the middle and lower reaches of the Yangtze River basin[J].Environ Pollut,2011,159(10):2575-85.
[17]Tsuruta T.Selective accumulation of light or heavy rare earth elements using gram-positive bacteria[J].Colloids Surf B Biointerfaces,2006,52(2):117-22.