Establishment and application of passive sampling method to measure pesticides in rivers for water quality guideline of tap water

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K12193
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental dynamic analysis
• Research Institution: Chiba Institute of Technology
• Principal Investigator: Kameda Yutaka 千葉工業大学, 創造工学部, 准教授 (60397081)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: パッシブサンプラー / 農薬 / 河川 / 水道水質基準 / 利根川

Outline of Final Research Achievements

In this study, 64 pesticides monitoring which combined grab sampling and passive sampling was performed during several months to reveal an effect of time trends of the concentrations on TWA concentrations by passive samplers. These results indicated that passive sampling could detect comparable numbers of pesticides which were detected in grab samples. It also indicated that TWA concentrations by passive samplers were good agreement with those by grab samples within two times when there were no sharp peaks in the time trends. On the other hands, it was apparent that ratios of TWA by grab samples to TWA by passive sampling had a linear relationship to coefficient of variation of time trend data when ratios of TWA by grab samples were more than five times larger than TWA by passive samplers. This results suggested that sharp peak events such as runoff by rainfalls could be existed when one grab sampling data was five times larger than TWA concentration data by passive samplers.

Free Research Field

環境化学