空中散布における飛散カルバリルの高速液体クロマトグラフィーによる簡易測定法

概要

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A simple HPLC method has been developed for the determination of carbaryl (NAC) deposited on the ground by spraying it from a helicopter. A Shimadzu LC-5A HPLC with a UV detector (267nm) was used. A metal column (25cm×4.6mm i. d.) was packed with 5-μm Develosil ODS (Nomura Chemical Co., Ltd., Japan). Elution was carried out with CH_3CN-H_2O (1 : 1, v/v) at a flow rate of 1.2ml/min. After aerial application, deposited carbaryl was collected for 1h on a filter paper (30cm in diameter). The paper was washed with 100ml of acetone. The solution was concentrated and injected into the HPLC. NAC was eluted at 7min and a linear calibration curve was obtained from 0.5 to 12.0μg/ml NAC with a relative standard deviation of 4.5% (n=5). The detection limit was 0.05μg/ml. Carbaryl was actually detected in the range of 35 to 5300μg/m^2 within 200m from the bundary of aerial application. The amounts found seemed to be influenced by wind direction and topography.
社団法人日本分析化学会の論文
1987-09-05