Photo-luminescence of Pesticide

Research Project

Project/Area Number	17K08032
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Agricultural environmental engineering/Agricultural information engineering
Research Institution	University of Miyazaki
Principal Investigator	Sakai Kentaro 宮崎大学, 産学・地域連携センター, 准教授 (20336291)
Co-Investigator(Kenkyū-buntansha)	小林太一宮崎大学, 産学・地域連携センター, 准教授 (40541355)
Project Period (FY)	2017-04-01 – 2020-03-31
Project Status	Completed (Fiscal Year 2019)
Budget Amount *help	¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000) Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000) Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000) Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords	光励起蛍光分光法 / 農薬 / 非破壊計測 / 光励起蛍光分光
Outline of Final Research Achievements	We have developed a non-destructive pesticide inspection equipment adapted to photo-luminescence (PL) spectroscopy and succeeded to observe the PL signals of 4 pesticides out of 7 pesticides. Sumithion, Mospiran, and Daconil were used as typical examples of emulsifiable concentrate (EC), soluble concentrate (SL), and wettable powder (WP) type pesticides, respectively, and the relationship between pesticide concentration and PL amplitude by water dilution was quantified on our equipment. Moreover, it was confirmed that chlorophyll fluorescence, which could be background noise in pesticide detection, was observed by measuring the PL properties of lime and cucumber, whether pesticide species could be identified in an actual environment. We also applied the diluted Daconil onto cucumber and dried it, and then measured the PL spectrum. We succeeded to observe the PL signal of the diluted Daconil, which is a practically applicable concentration on agricultural products.
Academic Significance and Societal Importance of the Research Achievements	残留農薬の非破壊計測において、近赤外分光法による吸収特性からは直接的に明らかにできない残留農薬の定量を、半導体物性評価の知見に基づく光励起蛍光分光法からアプローチする本研究は学術的な特徴を有する。国際競争力の波に晒される、日本農業と食の安全・安心を高い技術力で守る、本研究から導き出される結果の意義は大きい。