Screening method of soil pollution potential and high concern exposure route for PRTR substances

2014 Fiscal Year Final Research Report

• Project/Area Number: 25550077
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental risk control and evaluation
• Research Institution: Yokohama National University
• Principal Investigator: KOBAYASHI Takeshi 横浜国立大学, 環境情報研究科(研究院), 准教授 (60293172)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 暴露シナリオ / 土壌汚染 / 汚染未然防止 / リスク / リスクスクリーニング

Outline of Final Research Achievements

The aim of this study is to develop the screening method to evaluate the possibility of human health risk caused by soil contamination of PRTR substances. From the point of view of risk, exposure and toxicity were considered. We defined (1)ease of discharging to soil as “emission score”, (2)ease of transfer and persistence from emission media to exposure media as “transfer score”, (3)ease of persistence in soil as “persistence score”, (4)toxicity as “toxicity score”. By multiplying each scores, substances of concern in each scenario were decided.
For the expansion of PRTR substances database, the environmental behavior of various soil contaminants, for example, the underground seepage of heavy metals, 1,4-dioxane and tetrachloroethylene etc., were measured. Moreover the atmospheric deposition of Pb etc. was considered as important and unresolved one of the soil pollution route.

Free Research Field

環境科学、化学物質管理、土壌汚染リスク管理