Fate prediction and environmental monitoring and of agricultural chemicals in aquatic environment

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K21643
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Environmental dynamic analysis; Environmental policy and social systems
• Research Institution: National Institute of Health Sciences
• Principal Investigator: Kobayashi Norihiro 国立医薬品食品衛生研究所, 生活衛生化学部, 室長 (10450660)
• Research Collaborator: TSUCHIYA Yuko ; KOMATSUBARA Yumi ; ERIGUCHI Tomomi
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 農薬 / 水環境 / 動態 / シミュレーション / 分析 / モニタリング

Outline of Final Research Achievements

In order to predict the detections of agricultural chemicals in Japanese aquatic environment, we have developed a chemical fate prediction model. After collecting physico-chemical properties of these agricultural chemicals, we applied the model to 234 agricultural chemicals. Run-off ratio at the 30 km downstream from loading points and the mass balances of these pharmaceuticals in the river were estimated. Further, we have developed a simultaneous analysis method of agricultural chemicals in water samples by gas chromatography - mass spectrometry (GC/MS) and liquid chromatography - tandem mass spectrometry (LC/MS/MS), in order to conduct a monitoring survey of agricultural chemicals in aquatic environment. Accuracy of the analytical method was satisfactory. We have collected 75 river water samples and detected 30 agricultural chemicals. Agricultural chemicals, which were estimated high run-off ratios (>70%) from the model, were frequently detected in our environmental monitoring.

Free Research Field

環境化学