安徽太平湖流域底质沉积物多种重金属和砷的分布特征及环境评价
|
摘要
对安徽太平湖湖区和5条主要入湖河流表层沉积物中的重金属Cu,Pb,Zn,Cd,Cr,Hg和As的含量水平和空间分布进行分析,并对沉积物中重金属对生态环境的影响进行评价.结果表明,湖区重金属Cu,Pb,Zn,Cd和Hg的平均含量分别为21.25,0.96,14.61,0.034,0.005mg/kg,Cr和As低于检出限.各重金属在湖区的空间分布较为一致,整体上呈现自西向东重金属含量先变高再变低的趋势,5条入湖河流的重金属含量均低于黄山市土壤背景值.潜在生态风险(Hakanson)评价结果表明,所有点位的单因子重金属潜在生态风险值Eri均低于40,生态综合风险指数(RI)全部低于150,研究区整体处于轻微生态风险水平.地累积指数评价结果表明重金属元素在表层沉积物中基本不构成污染.沉积物质量基准法得出重金属浓度均低于ERL值,对研究区域生态环境无影响.底质沉积物中的重金属富集尚未对流域的生态环境造成不良影响,太平湖湖区和5条主要入湖河流生态环境状况良好.
The concentration of seven heavy metals in the surface sediments from Taipinghu Lake and five rivers which inflow into lake in Anhui Province were determined.Their distribution and contamination status are discussed.The average content rations of Cu,Pb,Zn,Cd,Hg were 21.25,0.96,14.61,0.034,0.005mg/kg,while Cr and As are below detection limit.The ecological risk assessment in this area is carried out by the methods of geoaccumulationindex,ecological risk index and sediment quality guild.The results show that heavy metal except Cu concentrations in lake region and inflow rivers are lower than soil background values in Huangshan.According to the value of Eri and RI,all sites of value of Eri are lower than 40 and the value of RIare lower than150 indicate that the study area is under light potential ecological risk,and the value of Igeoalso shows the degree of surface sediments in Taipinghu are not serious.The accumulative contents of Cu exhibited moderate contamination based on geoaccumulation index while SQGs show the concentration of Cu is not harmful to organisms,the value of SQGs also show the rest of heavy metals are belowERLwhich means the environment of study area is appropriate for creatures.Pollution to environment was not distinguished from accumulation of heavy metals in surface sediment environment.
The concentration of seven heavy metals in the surface sediments from Taipinghu Lake and five rivers which inflow into lake in Anhui Province were determined.Their distribution and contamination status are discussed.The average content rations of Cu,Pb,Zn,Cd,Hg were 21.25,0.96,14.61,0.034,0.005mg/kg,while Cr and As are below detection limit.The ecological risk assessment in this area is carried out by the methods of geoaccumulationindex,ecological risk index and sediment quality guild.The results show that heavy metal except Cu concentrations in lake region and inflow rivers are lower than soil background values in Huangshan.According to the value of Eri and RI,all sites of value of Eri are lower than 40 and the value of RIare lower than150 indicate that the study area is under light potential ecological risk,and the value of Igeoalso shows the degree of surface sediments in Taipinghu are not serious.The accumulative contents of Cu exhibited moderate contamination based on geoaccumulation index while SQGs show the concentration of Cu is not harmful to organisms,the value of SQGs also show the rest of heavy metals are belowERLwhich means the environment of study area is appropriate for creatures.Pollution to environment was not distinguished from accumulation of heavy metals in surface sediment environment.
引文
[1]王昕,乔淑卿,高晶晶,等.小麦岛附近海域表层沉积物重金属分布特征及环境评价[J].海洋通报,2013(3):287-295.
[2]罗美,黄金福.佛山汾江河底质重金属污染及其潜在生态危害评价[J].绿色科技,2011(6):23-26.
[3]Hakanson L.An ecological risk index for aquatic pollution control[J].Water Res,1980,14(8):975-1001.
[4]刘文新,栾兆坤,汤鸿霄.乐安江沉积物中金属污染的潜在生态风险评价[J].生态学报,1999,19(2):64-69.
[5]Martinez L,Poleto C.Assessment of diffuse pollution associated with metals in urban sediments using the geoaccumulation index(I-geo)[J].Journal of Soils and Sediments,2014,14(7):1251-1257.
[6]王沛芳,周文明,王超,等.太湖沉积物重金属的形态特征及生态风险评价[J].重庆大学学报,2012,35(11):136-143.
[7]Long E R,Field L J,MacDonald D D.Predicting toxicity in marine sediments with numerical sediment quality guidelines[J].Environ Toxicol Chem,1998,17(4):714-727.
[8]刘明,张爱滨,范德江,等.渤海中部底质沉积物重金属环境质量[J].中国环境科学,2012,32(2):279-290.
[9]贾振邦,赵智杰,杨小毛,等.洋涌河、茅洲河和东宝河沉积物中重金属的污染及评价[J].环境化学,2001,20(3):212-219.
[10]Guevara R,Rizzo A,Sanchez R,et al.Heavy metal inputs in Northern Patagonia lakes from short sediment core analysis[J].J Radioanal Nucl Ch,2005,265(3):481-493.
[11]Hilton J,Davison W.A mathematical-model for analysis of sediment core data-implications for enrichment factor calculations and trace-metal transport mechanisms[J].Chem Geol,1985,48(1-4):281-291.
[12]蒋晓霞,肖树林,支崇远.阿哈水库沉积物重金属污染及潜在生态风险评价[J].上海环境科学,2009,28(4):149-152.
[13]殷晋铎,么俊东,薛恩树,等.大沽排污河沉积物重金属和砷污染及生态风险性研究[J].环境工程,2004,22(1):70-72.
[14]李杰,祁士华,王向琴,等.海南小海沉积物中的重金属分布特征及潜在生态风险评价[J].安全与环境工程,2008,15(2):18-22.
[15]孙海,张东威.黄山风景区土壤环境背景值基本特征及其影响因素分析[J].中国环境监测,1992,8(5):53-54.
[16]李凤业,李学刚,齐君,等.近百年来胶州湾沉积物中重金属元素的累积过程及其环境意义[J].海洋学研究,2011,29(2):35-45.
[17]黄向青,梁开,刘雄.珠江口表层沉积物有害重金属分布及评价[J].海洋湖沼通报,2006(3):27-36.
[18]何云峰,朱广伟,陈英旭,等.运河(杭州段)沉积物中重金属的潜在生态风险研究[J].浙江大学学报(农业与生命科学版),2002,28(6):82-87.
[2]罗美,黄金福.佛山汾江河底质重金属污染及其潜在生态危害评价[J].绿色科技,2011(6):23-26.
[3]Hakanson L.An ecological risk index for aquatic pollution control[J].Water Res,1980,14(8):975-1001.
[4]刘文新,栾兆坤,汤鸿霄.乐安江沉积物中金属污染的潜在生态风险评价[J].生态学报,1999,19(2):64-69.
[5]Martinez L,Poleto C.Assessment of diffuse pollution associated with metals in urban sediments using the geoaccumulation index(I-geo)[J].Journal of Soils and Sediments,2014,14(7):1251-1257.
[6]王沛芳,周文明,王超,等.太湖沉积物重金属的形态特征及生态风险评价[J].重庆大学学报,2012,35(11):136-143.
[7]Long E R,Field L J,MacDonald D D.Predicting toxicity in marine sediments with numerical sediment quality guidelines[J].Environ Toxicol Chem,1998,17(4):714-727.
[8]刘明,张爱滨,范德江,等.渤海中部底质沉积物重金属环境质量[J].中国环境科学,2012,32(2):279-290.
[9]贾振邦,赵智杰,杨小毛,等.洋涌河、茅洲河和东宝河沉积物中重金属的污染及评价[J].环境化学,2001,20(3):212-219.
[10]Guevara R,Rizzo A,Sanchez R,et al.Heavy metal inputs in Northern Patagonia lakes from short sediment core analysis[J].J Radioanal Nucl Ch,2005,265(3):481-493.
[11]Hilton J,Davison W.A mathematical-model for analysis of sediment core data-implications for enrichment factor calculations and trace-metal transport mechanisms[J].Chem Geol,1985,48(1-4):281-291.
[12]蒋晓霞,肖树林,支崇远.阿哈水库沉积物重金属污染及潜在生态风险评价[J].上海环境科学,2009,28(4):149-152.
[13]殷晋铎,么俊东,薛恩树,等.大沽排污河沉积物重金属和砷污染及生态风险性研究[J].环境工程,2004,22(1):70-72.
[14]李杰,祁士华,王向琴,等.海南小海沉积物中的重金属分布特征及潜在生态风险评价[J].安全与环境工程,2008,15(2):18-22.
[15]孙海,张东威.黄山风景区土壤环境背景值基本特征及其影响因素分析[J].中国环境监测,1992,8(5):53-54.
[16]李凤业,李学刚,齐君,等.近百年来胶州湾沉积物中重金属元素的累积过程及其环境意义[J].海洋学研究,2011,29(2):35-45.
[17]黄向青,梁开,刘雄.珠江口表层沉积物有害重金属分布及评价[J].海洋湖沼通报,2006(3):27-36.
[18]何云峰,朱广伟,陈英旭,等.运河(杭州段)沉积物中重金属的潜在生态风险研究[J].浙江大学学报(农业与生命科学版),2002,28(6):82-87.
目录
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |