Effects on Immobilization of Arsenic in Mining Area Soil by Iron-containing Materials and Rare-earth Materials

WEN Wu; ZENG Min; LUO Yue-ping; BI Jun-ping; ZHOU Hang; LIAO Bo-han

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Effects on Immobilization of Arsenic in Mining Area Soil by Iron-containing Materials and Rare-earth Materials

更新时间：2024-11-07

- Effects on Immobilization of Arsenic in Mining Area Soil by Iron-containing Materials and Rare-earth Materials
- Vol. 25, Issue 5, (2011)
- 作者机构：
  
  1. 中南林业科技大学林学院
  2. 湖南省环境监测中心站
  3. 中南林业科技大学生物技术开放性中心实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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WEN Wu, ZENG Min, LUO Yue-ping, et al. Effects on Immobilization of Arsenic in Mining Area Soil by Iron-containing Materials and Rare-earth Materials[J]. 2011, 25(5).
DOI：

WEN Wu, ZENG Min, LUO Yue-ping, et al. Effects on Immobilization of Arsenic in Mining Area Soil by Iron-containing Materials and Rare-earth Materials[J]. 2011, 25(5). DOI：

摘要

通过分析添加含铁材料(Fe2O3、Fe2(SO4)3)和稀土材料(CeCl3、LaCl3)后矿区污染土壤中交换态砷(As)含量和土壤pH值的变化规律

研究这2类材料对矿区土壤As的固定效果以及对土壤性质的影响。结果表明

Fe2O3对As固定效果不明显

当Fe2O3最大添加量为8g/kg(分别按Fe计)时

土壤中交换态As含量仅降低了3.81%

其他3种材料在本试验条件下表现出良好的效果

其中Fe2(SO4)3和LaCl3固定As的效果相当

CeCl3次之。当这3种材料的添加量分别为2

8g/kg(按Fe、La、Ce计)时

土壤交换态As含量无法检出。对土壤pH的测定发现

Fe2O3对土壤pH几乎没有影响

其他3种材料都不同程度降低了土壤pH

Fe2(SO4)3对土壤的酸化尤为明显

CeCl3和LaCl3对土壤的酸化强度相当。

Abstract

An incubation experiment was conducted to study immobilization of arsenic in mining area soil by two kinds of material

namely

iron-containing materials(Fe2O3

Fe2(SO4)3) and rare-earth materials(CeCl3

LaCl3).The results showed that Fe2O3 had little effect on immobilization of soil arsenic

attaining only 3.81% decrease in exchangeable arsenic at an application of 8 g/kg(Fe).On the contrary

the other three materials proved to be effective in immobilizing arsenic.Fe2(SO4)3 was the most effective as well as LaCl...

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