| 刘冠男,陈明,李悟庆,巩文雯.土壤中砷的形态及其连续提取方法研究进展[J].农业环境科学学报,2018,37(12):2629-2638. |
| 土壤中砷的形态及其连续提取方法研究进展 |
| A critical review on the speciation and development of sequential extraction procedures for arsenic in soils |
| 投稿时间：2018-04-25 |
| DOI：10.11654/jaes.2018-0544 |
| 中文关键词: 砷 形态 连续提取 土壤 Wenzel法 |
| 英文关键词: arsenic speciation sequential extraction procedure soil Wenzel method |
| 基金项目:中国地质科学院基本科研业务费项目（YYWF201610，JYYWF20181502） |
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| 中文摘要: |
| 连续提取法（Sequential extraction procedure，SEP）是研究土壤中重金属等元素赋存状态的重要手段，对土壤环境风险的评估具有重要意义。砷在土壤中的迁移转化规律与其他重金属明显不同，因此针对不同形态土壤重金属的连续提取法并不完全适用于土壤中不同形态砷的提取。本文综述了土壤砷的化学提取形态、土壤砷形态连续提取方法中的提取剂、土壤砷形态连续提取方法及发展过程，并分析和总结了Wenzel法、Shiowatana法、Keon法和Drahota法等多种常用提取方法的优缺点，最后对土壤中砷形态仪器分析技术与土壤砷形态连续提取方法的联用进行了展望。 |
| 英文摘要: |
| Sequential extraction procedure (SEP) is as an important method for the study of the speciation of trace elements in soils. It is of great significance in the assessment of environmental risk. The migration and transformation behaviors of arsenic in soils are significantly different from those of other heavy metals. Therefore, the SEPs for most heavy metals are not suitable for quantifying arsenic speciation in soils, and a specific SEP for arsenic in soils is required. This paper critically reviewed the geochemical fractions of arsenic in soils as well as the extractants, procedure, and development of SEPs for arsenic in soils. The advantages and disadvantages of some prevalent SEPs, such as the Wenzel method, Shiowatana method, Keon method, and Drahota method, were proposed to provide a reference for the extraction of arsenic speciation in soils. Finally, an overview of the combination of various instrumental analytical techniques and SEPs for arsenic speciation in soils was provided. |
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