| 模拟酸雨条件下降尘中Cu,Pb,Zn,Cr各形态的溶出和转化研究 |
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| 引用本文： | 高连存,冯素萍.模拟酸雨条件下降尘中Cu,Pb,Zn,Cr各形态的溶出和转化研究[J].环境化学,1994,13(5):448-452. |
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| 作者姓名： | 高连存 冯素萍 |
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| 作者单位： | 山东大学环境科学中心!济南250100(高连存，何桂华)，山东大学实验中心(冯素萍，王淑仁，崔兆杰) |
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| 摘 要： | 本文用Ｔｅｓｓｌｅｒ方法，研究了模拟酸雨条件下，降尘中Ｃｕ，Ｐｂ，Ｚｎ，Ｃｒ各形态的溶出和相互转化。试验表明：（１）降尘中Ｃｕ，Ｃｒ的溶出量随酸雨酸度的增大而增加；Ｐｂ，Ｚｎ没分别在ＰＨ＝３．５和ＰＨ＝４．５时溶出量最大，溶出的金属多源于可交换态和碳酸盐结合态，说明这两种形态的稳定性较差。（２）在模拟酸雨条件下，Ｃｕ，Ｐｂ，Ｚｎ，Ｃｒ各形态的含量发生了较大变化；Ｃｕ从其优势形态有机结合态向可交换态
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| 关 键 词： | 模拟酸雨 形态分析 铜 铅 锌 铬 降尘 |
SOLUBILITY AND EXCHANGE OF Cu, Pb, Zn, Cr SPECIES IN SIMULANT ACID RAIN |
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| Goo Liancun He Guihua.SOLUBILITY AND EXCHANGE OF Cu, Pb, Zn, Cr SPECIES IN SIMULANT ACID RAIN[J].Environmental Chemistry,1994,13(5):448-452. |
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| Authors: | Goo Liancun He Guihua |
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| Abstract: | The effect of acid rain on species of Cu, Pb, Zn, Cr has been studied by Tessler method. In simulant acid rain the content of Cu, Cr increased with decreasing pH, whereas solubilization content of Pb, Zn has a peak value at pH 3. 5 and 4. 5, respectively, which come from the exchangeable and carbonate-bound fractions in the first place. In addition, the contents of various species of Cu, Pb, Zn, Cr are changed greatly in simulant acid rain. Copper transforms from Superior form (bound to organic matter) to exchangeable, then bound to carbonates and finally to Fe-Mn oxides; while lead, zinc and chromium transform from Fe-Mn oxides to exchangeable and to carbonates. |
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| Keywords: | simulant acid rain speciation copper lead zinc chromium dust |
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