掘削土壌におけるヒ素の溶出ポテンシャル評価法と人為・自然由来判定法の開発

开挖土中砷溶出潜力评价方法及人工/自然来源测定方法的开发

• 批准号: 17J07673
• 负责人: 李 継寧
• 金额: $ 1.09万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2017
• 资助国家: 日本
• 起止时间: 2017-04-26 至 2019-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17J07673/
• 关键词: Arsenic; Leaching risk; Standardization; Source identification; Enrichment factor; Arseinc; Water extraction

A series of sequential leaching tests were conducted to investigate the effects of test parameters on As release and the pollution potential leaching index (PPLI). The variability of the water-soluble fractions and PPLI values was sensitive to the test conditions. The use of the PPLI concept for quick estimation of the potential As leachability was supported by the good reproducibility of PPLI results. Enrichment factor (EF) was used to identify the As sources. EF is the ratio of (As/M) in a studied sample to (As/M) in background sample. M is the reference element. Through database investigation, Ti was selected as the reference element. If the As/Ti ratio in a target sample is lower than the value of 0.01, the As is considered as naturally-occurring.

通过一系列连续淋溶试验，研究了试验参数对As释放和污染潜淋指数（PPLI）的影响。水溶性组分和PPLI值的变异性对试验条件敏感。PPLI结果的良好再现性支持了使用PPLI概念快速估计潜在的As可吸收性。富集因子（EF）用于确定砷的来源。EF是研究样品中（As/M）与背景样品中（As/M）的比值。M是参考元素。通过数据库调查，选择Ti作为参比元素。如果目标样品中的As/Ti比低于0.01，则认为As是天然存在的。

项目成果

Investigations of water-extractability of As in excavated urban soils using sequential leaching tests: Effect of testing parameters.

• DOI: 10.1016/j.jenvman.2018.03.105
• 发表时间: 2018-07
• 期刊: Journal of environmental management
• 影响因子: 8.7
• 作者: Jining Li;Tomoya Kosugi;Shohei Riya;Y. Hashimoto;H. Hou;A. Terada;M. Hosomi

Assessment of water leaching risk of arsenic in excavated soils with relatively low levels of arsenic.

砷含量相对较低的挖掘土壤中砷的水浸出风险评估。

• 发表时间: 2017
• 作者: Jining Li;Tomoya Kosugi;Shohei Riya;Akihiko Terada;Masaaki Hosomi.
• 通讯作者: Masaaki Hosomi.