阜阳市城市规划区土壤重金属积累特征及其污染评价
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摘要
通过在阜阳市城市规划区进行现场调查采样与测试分析,研究了该地区0～20cm表层土壤中7种典型重金属的累积状况,并采用污染指数法对土壤重金属的污染状况进行了评价。结果表明:参照安徽省土壤背景值,阜阳市城区土壤中Pb积累明显,超过土壤背景值的215.67%;单项污染指数评价结果显示,Hg污染最严重,Zn污染最弱;尼梅罗综合污染指数评价结果显示,研究区各功能区土壤重金属综合污染指数排序为交通区>工业区>居住区>公园区,且交通区和工业区达到了重度污染级别。
The accumulation characteristics of Cu, Pb, Zn, Cr, Cd, As and Hg in 0～20 cm topsoil are studied by means of field sampling and laboratory detection in Fuyang urban planning area. This paper evaluates the pollution status of those heavy metals by using the pollution index method based on the background levels of heavy metals in topsoil of Anhui Province. The results show that the concentrations of Pb in urban topsoil accumulate significantly, and its average contents exceed corresponding standard levels by 215.67%, with the comparison to the concentrations of soil elements in Anhui Province. The evaluation on characteristics of heavy metal pollution in terms of area distribution by using single contamination index method indicates that Hg pollution is the most serious, and Zn pollution is the least serious. Comprehensive contamination index evaluation results show that the sorts of soil pollution index in functional areas are: transportation district > industrial urban area > residential area > park district. The transportation district and industrial urban area are both severely polluted.
The accumulation characteristics of Cu, Pb, Zn, Cr, Cd, As and Hg in 0～20 cm topsoil are studied by means of field sampling and laboratory detection in Fuyang urban planning area. This paper evaluates the pollution status of those heavy metals by using the pollution index method based on the background levels of heavy metals in topsoil of Anhui Province. The results show that the concentrations of Pb in urban topsoil accumulate significantly, and its average contents exceed corresponding standard levels by 215.67%, with the comparison to the concentrations of soil elements in Anhui Province. The evaluation on characteristics of heavy metal pollution in terms of area distribution by using single contamination index method indicates that Hg pollution is the most serious, and Zn pollution is the least serious. Comprehensive contamination index evaluation results show that the sorts of soil pollution index in functional areas are: transportation district > industrial urban area > residential area > park district. The transportation district and industrial urban area are both severely polluted.
引文
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阴雷鹏,赵景波,2006.西安市主要功能区表层土壤重金属污染现状评价[J].陕西师范大学学报:自然科学版,34(3):109-112.
陈兴仁,陈富荣,贾十军,等,2012.安徽省江淮流域土壤地球化学基准值与背景值研究[J].中国地质,39(2):302-310.
陈毛华,刘明广,郭斌,2016.阜阳市颍州区城郊菜地重金属污染调查与评价[J].东北农业科学,41(3):37-40.
黄敏,杨海舟,余萃,2010.武汉市土壤重金属积累特征及其污染评价[J].水土保持学报,24(4):135-139.
刘玉燕,刘敏,2008.上海城市土壤中重金属含量及赋存形态[J].城市环境与城市生态,21(2):34-37.
王寅,谢荣焕,杜欢,等,2017.重金属污染农田土壤修复工程实施和面临的问题探讨——以阜阳市临泉县耕地土壤污染治理与修复示范工程为例[C]//中国土壤学会土壤环境专业委员会.中国土壤学会土壤环境专业委员会第十九次会议暨“农田土壤污染与修复研讨会”第二届山东省土壤污染防控与修复技术研讨会摘要集:118-119.
王浚卿,李科,田媛,等,2014.临汾市表层土壤重金属污染特征及评价[J].环境科学与技术,37(S1):279-283.
谢学锦,2000.“化学定时炸弹”与可持续发展[J].中国青年科技,(11):32-35.
杨苏才,曾静静,王胜利,等,2004.兰州市表层土壤Cu、Zn、Pb污染评价及成因分析[J].干旱区资源与环境,18(8):28-31.
阴雷鹏,赵景波,2006.西安市主要功能区表层土壤重金属污染现状评价[J].陕西师范大学学报:自然科学版,34(3):109-112.