2018 Fiscal Year Annual Research Report
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
Project/Area Number |
17J07673
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Research Institution | Tokyo University of Agriculture and Technology |
Principal Investigator |
李 継寧 東京農工大学, 大学院工学研究院, 特別研究員(PD)
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Project Period (FY) |
2017-04-26 – 2019-03-31
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Keywords | Arsenic / Leaching risk / Standardization / Source identification / Enrichment factor |
Outline of Annual Research Achievements |
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.
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Research Progress Status |
平成30年度が最終年度であるため、記入しない。
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Strategy for Future Research Activity |
平成30年度が最終年度であるため、記入しない。
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Research Products
(2 results)