| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| 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.
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