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土壤有机质对铊在土壤中吸附-解吸行为的影响

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李祥平, 张飞, 齐剑英, 陈永亨. 土壤有机质对铊在土壤中吸附-解吸行为的影响[J]. 环境工程学报, 2012, 6(11): 4245-4250.
引用本文: 李祥平, 张飞, 齐剑英, 陈永亨. 土壤有机质对铊在土壤中吸附-解吸行为的影响[J]. 环境工程学报, 2012, 6(11): 4245-4250.
shu
Li Xiangping, Zhang Fei, Qi Jianying, Chen Yongheng. Effects of organic matter on thallium adsorption-desorption in soils[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 4245-4250.
Citation: Li Xiangping, Zhang Fei, Qi Jianying, Chen Yongheng. Effects of organic matter on thallium adsorption-desorption in soils[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 4245-4250.
shu

土壤有机质对铊在土壤中吸附-解吸行为的影响

  • 1.

    广州大学化学化工学院,广州大学分析测试中心,广州 510006

  • 2.

    广州大学环境科学与工程学院, 广州 510006

  • 3.

    环境保护部华南环境科学研究所,广州 510655

  • 基金项目:

    国家自然科学青年基金项目(40903044)

    广州大学引进人才科研启动项目

  • 中图分类号: X53

Effects of organic matter on thallium adsorption-desorption in soils

  • 1.

    School of Chemical and Engineer, Analytical and Testing Center, Guangzhou University, Guangzhou 510006,China

  • 2.

    School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006,China

  • 3.

    South China Institute of Environmental Science, Ministy of Environmental Protection of People’s Republic of China, Guangzhou 510655,China

  • Fund Project:

  • 摘要: 研究了土壤有机质对Tl+在红壤和黄土2种土壤中的吸附-解吸行为的影响。结果表明,去除土壤有机质后红壤和黄土对Tl+的吸附量均明显下降,下降幅度最高分别达到24.7%和28.2%,黄土的下降幅度大于红壤;黄土对Tl+吸附率最高下降幅度约为20%,也高于红壤的15%。土壤有机质对Tl+吸附的贡献率平均值分别是黄土39.2%、红壤32.8%。2种土壤对Tl+的解吸量在去除有机质之后都明显增大,在初始Tl+浓度较高的情况下,增大幅度明显;并且Tl+的初始浓度越高,土壤在去有机质前后的解吸率相差就越大,在Tl+最大处理浓度为20 mg/L时,红壤和黄土的解吸率增加分别达到60.8%和65.5%。
    Abstract: The effects of present organic matter in red soil and loess on the Tl+ adsorption-desorption behaviors were investigated. The results showed that the adsorption of Tl+ by both red soil and loess was remarkabley decreased after the removal of soil organic matter (SOM). The reduce in Tl+ adsorption capacity varied with different initial Tl+ concentrations, and the greatest degree was 24.7% and 28.2% for red soil and loess, respectively. The greatest decrease degree in Tl+ adsorption rate by loess was about 20%, which was higher than that by red soil. The contribution of SOM to the Tl+ adsorption by loess and red soil was 39.2% and 32.8%, respectively. In addition, the desorption of Tl+ from both loess and red soil was enhanced after the removal of SOM, particularly for high initial Tl+ concentration. When the initial Tl+ concentration was 20 mg/L, the desorption rate increased to 60.8% and 65.5% for red soil and loess, respectively.
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  • 收稿日期:  2012-05-08
  • 刊出日期:  2012-11-09
李祥平, 张飞, 齐剑英, 陈永亨. 土壤有机质对铊在土壤中吸附-解吸行为的影响[J]. 环境工程学报, 2012, 6(11): 4245-4250.
引用本文: 李祥平, 张飞, 齐剑英, 陈永亨. 土壤有机质对铊在土壤中吸附-解吸行为的影响[J]. 环境工程学报, 2012, 6(11): 4245-4250.
shu
Li Xiangping, Zhang Fei, Qi Jianying, Chen Yongheng. Effects of organic matter on thallium adsorption-desorption in soils[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 4245-4250.
Citation: Li Xiangping, Zhang Fei, Qi Jianying, Chen Yongheng. Effects of organic matter on thallium adsorption-desorption in soils[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 4245-4250.
shu

土壤有机质对铊在土壤中吸附-解吸行为的影响

  • 1. 广州大学化学化工学院,广州大学分析测试中心,广州 510006
  • 2. 广州大学环境科学与工程学院, 广州 510006
  • 3. 环境保护部华南环境科学研究所,广州 510655
  • 收稿日期:  2012-05-08
基金项目:

国家自然科学青年基金项目(40903044)

广州大学引进人才科研启动项目

摘要: 研究了土壤有机质对Tl+在红壤和黄土2种土壤中的吸附-解吸行为的影响。结果表明,去除土壤有机质后红壤和黄土对Tl+的吸附量均明显下降,下降幅度最高分别达到24.7%和28.2%,黄土的下降幅度大于红壤;黄土对Tl+吸附率最高下降幅度约为20%,也高于红壤的15%。土壤有机质对Tl+吸附的贡献率平均值分别是黄土39.2%、红壤32.8%。2种土壤对Tl+的解吸量在去除有机质之后都明显增大,在初始Tl+浓度较高的情况下,增大幅度明显;并且Tl+的初始浓度越高,土壤在去有机质前后的解吸率相差就越大,在Tl+最大处理浓度为20 mg/L时,红壤和黄土的解吸率增加分别达到60.8%和65.5%。

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