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几种改良剂对矿区土壤中As化学形态和生物可给性的影响

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李季, 黄益宗, 保琼莉, 向猛. 几种改良剂对矿区土壤中As化学形态和生物可给性的影响[J]. 环境化学, 2015, 34(12): 2198-2203. doi: 10.7524/j.issn.0254-6108.2015.12.2015051503
引用本文: 李季, 黄益宗, 保琼莉, 向猛. 几种改良剂对矿区土壤中As化学形态和生物可给性的影响[J]. 环境化学, 2015, 34(12): 2198-2203. doi: 10.7524/j.issn.0254-6108.2015.12.2015051503
shu
LI Ji, HUANG Yizong, BAO Qiongli, XIANG Meng. Effect of several amendments on the speciation and bio-accessibility of arsenic polluted soils in adjacent areas of mine[J]. Environmental Chemistry, 2015, 34(12): 2198-2203. doi: 10.7524/j.issn.0254-6108.2015.12.2015051503
Citation: LI Ji, HUANG Yizong, BAO Qiongli, XIANG Meng. Effect of several amendments on the speciation and bio-accessibility of arsenic polluted soils in adjacent areas of mine[J]. Environmental Chemistry, 2015, 34(12): 2198-2203. doi: 10.7524/j.issn.0254-6108.2015.12.2015051503
shu

几种改良剂对矿区土壤中As化学形态和生物可给性的影响

  • 1.

    农业部环境保护科研监测所, 天津, 300191;

  • 2.

    中国科学院生态环境研究中心, 北京, 100085

  • 基金项目:

    国家科技支撑计划项目(2015BAD05B02)

    中央级公益性科研院所基本科研业务费专项资金(农业部环境保护科研监测所)资助.

Effect of several amendments on the speciation and bio-accessibility of arsenic polluted soils in adjacent areas of mine

  • 1.

    Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, China;

  • 2.

    Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China

  • Fund Project:

  • 摘要: 通过室内土培实验,分析添加赤泥、沸石、油菜秸秆、磷矿粉和生物炭等5种改良剂对矿区土壤As的化学形态和生物可给性的影响.结果表明,土壤As主要以残渣态为主.改良剂对As化学形态的影响随着培养时间的不同而不同.培养30 d后,5%赤泥和5%沸石处理分别导致土壤中酸可提取态As的含量比对照处理降低12.0%和5.1%.培养30 d和60 d,5%的油菜秸秆、5%的磷矿粉和5%的生物炭处理均显著提高了土壤中酸可提取态As的含量,增强了土壤中As的移动性.5种改良剂对土壤As的生物可给性也有影响.培养30 d和60 d后,5%的赤泥处理显著降低了As的生物可给性,5%的油菜秸秆、5%的磷矿粉和5%的生物炭处理均显著提高了As的生物可给性.培养30 d后,5%的沸石处理导致土壤生物可给性As的含量比对照降低7.5%;培养60 d后,5%的沸石处理对As的生物可给性没有影响.研究表明,赤泥和沸石是修复As污染土壤的潜力改良剂.
    Abstract: Effect of red mud, zeolite, rape straw, phosphate rock and biochar on the speceiation and bio-accessibility of As were studied by batch soil column incubation experiment. The results showed that As was mainly in the residual fraction form. The effect of amendments on the fractionation of As in soil differed with incubation time. Compared with the control, concentration of HOAc-soluble As decreased by 12.0% and 5.1% for the treatments with 5% red mud and 5% zeolite after 30 days incubation. The treatment with 5% rape straw, 5% phosphate rock and 5% biochar significantly (P<0.05) increased mobility of As and concentration of HOAc-soluble As after 30 days and 60 days incubation. All the five amendments affected the bio-accessibility of As in soil. The bio-accessibility of As decreased in red mud treatment, and increased in rape straw, phosphate rock and biochar treatment after 30 days and 60 days incubation. After 30 days incubation, the content of bio-accessible As in zeolite treatment decreased by 7.5%, but zeolite showed less effects on the bio-accessibility of As after 60 days incubation. These results suggest that red mud and zeolite can be used to reduce As bioavailability in contaminated soil.
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  • 收稿日期:  2015-05-15
  • 刊出日期:  2015-12-15
李季, 黄益宗, 保琼莉, 向猛. 几种改良剂对矿区土壤中As化学形态和生物可给性的影响[J]. 环境化学, 2015, 34(12): 2198-2203. doi: 10.7524/j.issn.0254-6108.2015.12.2015051503
引用本文: 李季, 黄益宗, 保琼莉, 向猛. 几种改良剂对矿区土壤中As化学形态和生物可给性的影响[J]. 环境化学, 2015, 34(12): 2198-2203. doi: 10.7524/j.issn.0254-6108.2015.12.2015051503
shu
LI Ji, HUANG Yizong, BAO Qiongli, XIANG Meng. Effect of several amendments on the speciation and bio-accessibility of arsenic polluted soils in adjacent areas of mine[J]. Environmental Chemistry, 2015, 34(12): 2198-2203. doi: 10.7524/j.issn.0254-6108.2015.12.2015051503
Citation: LI Ji, HUANG Yizong, BAO Qiongli, XIANG Meng. Effect of several amendments on the speciation and bio-accessibility of arsenic polluted soils in adjacent areas of mine[J]. Environmental Chemistry, 2015, 34(12): 2198-2203. doi: 10.7524/j.issn.0254-6108.2015.12.2015051503
shu

几种改良剂对矿区土壤中As化学形态和生物可给性的影响

  • 1.  农业部环境保护科研监测所, 天津, 300191;
  • 2.  中国科学院生态环境研究中心, 北京, 100085
  • 收稿日期:  2015-05-15
基金项目:

国家科技支撑计划项目(2015BAD05B02)

中央级公益性科研院所基本科研业务费专项资金(农业部环境保护科研监测所)资助.

摘要: 通过室内土培实验,分析添加赤泥、沸石、油菜秸秆、磷矿粉和生物炭等5种改良剂对矿区土壤As的化学形态和生物可给性的影响.结果表明,土壤As主要以残渣态为主.改良剂对As化学形态的影响随着培养时间的不同而不同.培养30 d后,5%赤泥和5%沸石处理分别导致土壤中酸可提取态As的含量比对照处理降低12.0%和5.1%.培养30 d和60 d,5%的油菜秸秆、5%的磷矿粉和5%的生物炭处理均显著提高了土壤中酸可提取态As的含量,增强了土壤中As的移动性.5种改良剂对土壤As的生物可给性也有影响.培养30 d和60 d后,5%的赤泥处理显著降低了As的生物可给性,5%的油菜秸秆、5%的磷矿粉和5%的生物炭处理均显著提高了As的生物可给性.培养30 d后,5%的沸石处理导致土壤生物可给性As的含量比对照降低7.5%;培养60 d后,5%的沸石处理对As的生物可给性没有影响.研究表明,赤泥和沸石是修复As污染土壤的潜力改良剂.

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