| 杨忠兰,曾希柏,孙本华,白玲玉,苏世鸣,王亚男,吴翠霞.水铁矿结构稳定性及对砷固定研究与展望[J].农业环境科学学报,2020,39(3):445-453. |
| 水铁矿结构稳定性及对砷固定研究与展望 |
| Research progress on the stability of ferrihydrite structure and its application in arsenic fixation |
| 投稿时间：2019-10-23 |
| DOI：10.11654/jaes.2019-1167 |
| 中文关键词: 铁氧化物 转化 稳定性 影响因素 |
| 英文关键词: iron oxide transformation stability influencing factor |
| 基金项目:中国农业科学院科技创新工程专项（CAAS-ASTIP-2016-IEDA） |
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| 中文摘要: |
| 水铁矿是砷污染土壤和水体修复中最常用、最有效的钝化剂。水铁矿等铁氧化物对砷的赋存形态和生物有效性具有显著影响，并对环境中的砷具有很强的固定作用；但水铁矿在环境中容易转化，极大地影响了其对砷固定的效果。基于此，本文从水铁矿的结构及影响其稳定性因素的分析入手，综述了水铁矿与砷的交互作用，探讨其在修复砷污染土壤方面的可行性，旨在为利用水铁矿修复砷污染土壤提供理论依据。同时，从降低农田中砷有效性等角度，对砷污染农田修复和安全利用技术与方法等进行了讨论。 |
| 英文摘要: |
| Ferrihydrite is the most commonly and effectively used passivator in ameliorating arsenic-contaminated soils and waters. Iron oxides, including ferrihydrite, have a significant effect on the occurrence form and bioavailability of arsenic, and a strong fixation effect on arsenic in the environment. However, ferrihydrite can be easily transformed in the environment, and this significantly affects the treatment effect of arsenic. Here, we highlighted the ferrihydrite structure and factors affecting its stability. Furthermore, we summarized the interaction between ferrihydrite and arsenic in order to discuss the feasibility of ameliorating arsenic-contaminated soil using ferrihydrite, and thus provided a theoretical basis in this regard. We also discussed the amelioration of arsenic-contaminated farmland and safe utilization techniques from the perspective of reducing arsenic bioavailability in farmlands. |
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