沈抚灌渠(抚顺段)底泥污染及潜在生态风险评价
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摘要
采用单因子指数法和Hakanson潜在危害指数法,对沈抚灌渠底泥中Hg、As、Cu、Zn、Pb和Cd污染情况进行生态风险评价。结果表明:灌渠底泥中Hg、As、Cu、Zn、Pb和Cd含量均高于背景值,Hg、Zn的污染指数Cif达到严重污染级别,Cd、Cu、Pb的污染指数Cif属重污染级别,重金属污染程度排序为Hg>Zn>Cd>Cu>Pb>As,综合污染指数Cd属严重污染级别;灌渠底泥中Hg、As、Cu、Zn、Pb和Cd均具有不同程度的潜在生态风险,Hg和Cd具有极高和较高的潜在生态风险,其余4种重金属均为低风险。
By using single factor index method and Hakanson potential hazard index, an ecological risk assessment study was conducted for the pollution of Hg, As, Cu, Zn, Pb and Cd in the sediment of Shen-Fu irrigation channel. The results show that contents of Hg, As, Cu, Zn, Pb and Cd in the sediment are higher than the background values; The pollution indexes Cif of Hg and Zn reach the serious pollution level, while the pollution indexes Cif of Cd, Cu and Pb reach pollution level; The order of heavy metal pollution degree is Hg>Zn>Cd>Cu>Pb>As. The comprehensive pollution index of Cd belongs to serious pollution level. The contents of Hg, As, Cu, Zn, Pb and Cd in the sediment present potential ecological risks at different degrees, potential ecological risks of Hg and Cd are respectively highest and higher, the rest 4 heavy metals are of low risk.
By using single factor index method and Hakanson potential hazard index, an ecological risk assessment study was conducted for the pollution of Hg, As, Cu, Zn, Pb and Cd in the sediment of Shen-Fu irrigation channel. The results show that contents of Hg, As, Cu, Zn, Pb and Cd in the sediment are higher than the background values; The pollution indexes Cif of Hg and Zn reach the serious pollution level, while the pollution indexes Cif of Cd, Cu and Pb reach pollution level; The order of heavy metal pollution degree is Hg>Zn>Cd>Cu>Pb>As. The comprehensive pollution index of Cd belongs to serious pollution level. The contents of Hg, As, Cu, Zn, Pb and Cd in the sediment present potential ecological risks at different degrees, potential ecological risks of Hg and Cd are respectively highest and higher, the rest 4 heavy metals are of low risk.
引文
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[10]Hakanson L.An ecikigucak rusk index for pollution control:a sedimentological approach[J].Water Res,1980,14(8):975-1001.
[11]吴燕玉.沈阳市土壤环境背景值:土壤—植物系统生态研究[M].北京:中国科学技术出版社,1986:278-284.
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[14]赵沁娜,徐启新,杨凯.潜在生态危害指数法在典型污染行业土壤污染评价中的应用[J].华东师范大学学报,2005,1:110-115.
[2]蒋林时,王磊,李靖平,等.砾石填料床预处理沈抚灌渠污水的试验研究[J].中国给水排水,2010(7):77-79.
[3]姜晓峰,柏杨巍,来永斌,等.沈抚灌渠污水构筑湿地修复模拟实验研究[J].环境科技,2010(S1):8-11.
[4]马德毅.海洋沉积物的污染指示作用和监测方法[J].海洋通报,1993.12(5):33-37.
[5]范栓喜,甘卓亭,李美娟,张掌权,周旗,等.土壤重金属污染评价方法进展[J].中国家学通报,2010,26(17):310-315.
[6]程南宁,李巍,等.浙江东钱湖底泥污染物分布特征与评价[J].湖泊科学,2007,19(1):58-62.
[7]彭景,李泽琴,侯家渝,等.地积累指数法及生态危害指数评价法在土壤重金属污染中的应用及探讨[J].广东微量元素科学,2007,14(8):13-17.
[8]王鑫,孙丽娜,孙铁珩,杨晓波,等.细河流域土壤中重金属的污染现状及潜在生态风险[J].环境科学研究,2009,22(01):66-70.
[9]徐燕,李淑芹,郭书海,等.土壤重金属污染评价方法的比较[J].安徽农业科学,2008,36(11):4615-4617.
[10]Hakanson L.An ecikigucak rusk index for pollution control:a sedimentological approach[J].Water Res,1980,14(8):975-1001.
[11]吴燕玉.沈阳市土壤环境背景值:土壤—植物系统生态研究[M].北京:中国科学技术出版社,1986:278-284.
[12]马德毅,王菊英.中国主要河口沉积物污染及潜在生态风险评价[J].中国环境科学,2003,23(5):521-525.
[13]安立会,郑丙辉,张雷,贾宁,等.渤海湾河口沉积物重金属污染及潜在生态风险评价[J].中国环境科学,2010,30(5):666-670.
[14]赵沁娜,徐启新,杨凯.潜在生态危害指数法在典型污染行业土壤污染评价中的应用[J].华东师范大学学报,2005,1:110-115.