| 黄土与古土壤中重金属的存在形态及风化成土作用对其影响 |
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| 引用本文： | 孙继敏,文启忠.黄土与古土壤中重金属的存在形态及风化成土作用对其影响[J].土壤学报,1994,31(3):305-311. |
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| 作者姓名： | 孙继敏 文启忠 |
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| 作者单位： | 中国科学院地质研究所, 100029;中国科学院地球化学研究所广州分部 |
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| 摘 要： | 本文采用了七步连续萃取方法，研究了洛川黄土剖面黄土与古土壤中Ｆｅ，Ｃｕ，Ｚｎ，Ｃｏ和Ｎｉ五种重金属的存在形态。结果表明：黄土与古土壤中上述元素主要存在于残余态和晶形，无定形氧化铁的结合态中，而且线性回归分析表明Ｃｕ，Ｚｎ，Ｎｉ与晶形氧化铁之间存在关；ｃＵ，ｃＯ，Ｎｉ与无定形氧化铁之间存在相关；黄土风化为古土壤后，碳酸盐结合态的重金属含量增加是古土壤相对于黄土重金属增加的主要原因。
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| 关 键 词： | 黄土 古土壤 重金属形态 |
DISTRIBUTION AND FRACTIONS OF HEAVY METALS IN LOESS AND PALEOSOL AND THE INFLUENCE OF WEATHERING |
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| Sun Jimin and Wen Qizhong.DISTRIBUTION AND FRACTIONS OF HEAVY METALS IN LOESS AND PALEOSOL AND THE INFLUENCE OF WEATHERING[J].Acta Pedologica Sinica,1994,31(3):305-311. |
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| Authors: | Sun Jimin and Wen Qizhong |
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| Institution: | Institute of Geology, Academta Sinica, Beijing, 100029;Guankzhou Branch of Institute of Geochemistry, Bcademia Sinica |
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| Abstract: | A seven-step sequential extraction procedure was used to investigate the disribution and fractions of Fe, Cu, Zn, Co and Ni in Luochuan loess-paleosol sequence. Seven fractions i.e., exchangeable(EX), carbonates-bound(CARB), Mn-oxidebound (MnOX), amorphous Fe-oxide-bound(AFeOX), crystalline Fe-oxide-bound (CFeOX), organically bound (OM), and residual (RES) fractions were found through fractionation. |
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| Keywords: | Loess paleosol Fractions of heavy metals |
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