Proposal of tracer test method in the groundwater contamination field and clarification of pollution mechanism

2016 Fiscal Year Final Research Report

• Project/Area Number: 24360194
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Nagasaki University
• Principal Investigator: NAKAGAWA Kei 長崎大学, 水産・環境科学総合研究科(環境), 教授 (90315135)
• Co-Investigator(Kenkyū-buntansha): 朝倉 宏 長崎大学, 水産・環境科学総合研究科(環境), 准教授 (00391061) ; 高尾 雄二 長崎大学, 水産・環境科学総合研究科(環境), 教授 (20206709) ; 斎藤 雅彦 神戸大学, 工学研究科, 助教 (40283915)
• Project Period (FY): 2012-04-01 – 2017-03-31
• Keywords: 硝酸性窒素 / 地下水汚染 / トレーサー試験 / コプロスタノール

Outline of Final Research Achievements

In this study, the use of coprostanol, the fecal contamination indicator, was examined as a groundwater tracer. Point dilution tests were performed as tracer tests in the field to investigate the vertical distribution of groundwater characteristics and spatial-temporal distribution of groundwater chemistry. The results showed that it was practically impossible to use the tracer test in the field. However, coprostanol did show potential to indicate the source of nitrate pollution in groundwater. Further research will be done to prove this method.

Free Research Field

環境地下水学・地盤環境工学