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广西河池锑冶炼区周边苔藓对大气重金属的记录

李海霞 张国平 李玲 魏晓飞 蔡永兵 付志平

李海霞, 张国平, 李玲, 魏晓飞, 蔡永兵, 付志平. 广西河池锑冶炼区周边苔藓对大气重金属的记录[J]. 环境科学研究, 2012, 25(9): 968-973.
引用本文: 李海霞, 张国平, 李玲, 魏晓飞, 蔡永兵, 付志平. 广西河池锑冶炼区周边苔藓对大气重金属的记录[J]. 环境科学研究, 2012, 25(9): 968-973.
LI Hai-xia, ZHANG Guo-ping, LI Ling, WEI Xiao-fei, CAI Yong-bing, FU Zhi-ping. Heavy Metal Deposition Recorded by Mosses around a Hechi Antimony Smelter in Guangxi, China[J]. Research of Environmental Sciences, 2012, 25(9): 968-973.
Citation: LI Hai-xia, ZHANG Guo-ping, LI Ling, WEI Xiao-fei, CAI Yong-bing, FU Zhi-ping. Heavy Metal Deposition Recorded by Mosses around a Hechi Antimony Smelter in Guangxi, China[J]. Research of Environmental Sciences, 2012, 25(9): 968-973.

广西河池锑冶炼区周边苔藓对大气重金属的记录

基金项目: 国家自然科学基金项目(40973084,40773073);中国科学院重要方向项目(KZCX2-YW-135);国家基金委创新群体项目(41021062)

Heavy Metal Deposition Recorded by Mosses around a Hechi Antimony Smelter in Guangxi, China

  • 摘要: 借助苔藓对广西河池锑冶炼区周边大气中的10种重金属(Sb、Pb、As、Cu、Cd、Mn、Fe、Al、Ba、Sr)的分布迁移规律进行了研究. 结果表明:苔藓可有效反映重金属的沉降. 苔藓中w(Sb)、w(Pb)、w(As)和w(Cd)的范围分别为41.0~5.77×103、1.05×102~1.39×104、25.0~1.07×103和8.00~263 mg/kg,分别是背景值的1.5~213.6、24.5~322.5、3.6~1 980.9和3.2~105.2倍. 元素相关性的主成分分析表明,Sb、Pb、As、Cd和Cu为密切相关的一类元素,来源于原料矿石的冶炼排放;Mn、Fe和Al为第2类,主要来源于燃料煤的释放,此外,Mn还可能来源于城市气溶胶的输送和水泥厂的排放;Ba与Sr为第3类,来源与扬尘有关. 随着采样点与冶炼厂烟囱距离的增加,w(Sb)、w(Pb)、w(As)、w(Cu)和w(Cd)呈非线性下降,可用方程y=ae-x拟合. w(Sb)与w(Pb)的衰减速率相似,而w(As)衰减要快于二者.

     

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出版历程
  • 收稿日期:  2012-01-15
  • 修回日期:  2012-05-15
  • 刊出日期:  2012-09-25

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