| 粘粒和阳离子交换量对土壤中钍形态分布的影响 |
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| 引用本文： | 郭鹏然,段太成,刘欣丽,陈杭亭.粘粒和阳离子交换量对土壤中钍形态分布的影响[J].环境化学,2009,28(1). |
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| 作者姓名： | 郭鹏然 段太成 刘欣丽 陈杭亭 |
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| 作者单位： | 1. 中国科学院长春应用化学研究所国家电化学光谱研究分析中心,长春,130022;中国科学院研究生院,北京,100039
2. 中国科学院长春应用化学研究所国家电化学光谱研究分析中心,长春,130022 |
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| 摘 要： | 利用连续萃取程序和加入外源化合物进行培养的方法,考察了土壤阳离子交换量(CEC)和土壤粘粒矿物含量的变化对土壤中钍形态分布的影响,随着CEC的增加,土壤中非残留态钍增加,而稳定态钍降低.随着土壤粘粒矿物含量的增加,土壤中残留态钍的含量明显增加,非残留态钍含量降低.
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| 关 键 词： | 连续萃取 土壤 钍 形态 |
EFFECTS OF SOIL CLAY AND CATION EXCHANGE CAPACITY ON FRACTION DISTRIBUTION OF THORIUM IN SOIL FROM BAOTOU AREAS |
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| GUO Peng-ran,DUAN Tai-cheng,LIU Xin-li,CHEN Hang-ting.EFFECTS OF SOIL CLAY AND CATION EXCHANGE CAPACITY ON FRACTION DISTRIBUTION OF THORIUM IN SOIL FROM BAOTOU AREAS[J].Environmental Chemistry,2009,28(1). |
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| Authors: | GUO Peng-ran DUAN Tai-cheng LIU Xin-li CHEN Hang-ting |
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| Abstract: | Accumulation,transfer and impact to environment of thorium are governed directly by fractions bound in soil.The thorium fractions in soil are affected by soil properties.The effects of cation exchange capacity (CEC)and clay content on the distribution of thorium fractions were investigated by sequential extraction pro- cedure and incubation of adding foreign compounds,and the reasons that the thorium fractions transferred with changes of CEC and clay content were discussed.Increase of CEC could enhance the content of non-residual fractions,however,reduce the content of stable fractions.Increase of clay content could enhance obviously stable fractions,meanwhile reduce non-residual fractions. |
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| Keywords: | sequential extraction soil thorium speciation |
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