Detection of Fenitrothion and its Degradation Product 3-Methyl-4-nitrophenol in Water Environment
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概要
- 論文の詳細を見る
The organophosphate pesticide fenitrothion and its degradation product 3-methyl-4-nitrophenol (3M4NP), which possesses greater mutagen formation potential (MFP) than fenitrothion, were monitored. A total of 109 samples were collected from 41 sites of 12 rivers in the Tokyo metropolitan area and 71 samples were collected from 4 sites of 2 streams close to paddy fields in Kanagawa, Japan. The concentrations of fenitrothion and 3M4NP were determined by GC/MS with selected ion monitoring after solid-phase extraction and derivatization of 3M4NP with <I>N</I>, <I>O</I>-bis-(trimethylsilyl)trifluoroacetamide (BSTFA). Both fenitrothion and 3M4NP were below 1 μg/L (0 - 0.083 μg/L of fenitrothion and 0 - 0.156 μg/L of 3M4NP) in the river water samples, whereas fenitrothion and 3M4NP reached 0.16 and 1.6 μg/L, respectively, in the stream water samples. Seasonal and areal fluctuations were also observed in the streams. Nevertheless, the maximum concentration of 3M4NP appeared in late May at all sites. Furthermore, among the samples in which fenitrothion and/or 3M4NP were detected, 3M4NP largely contributed to the potential in 56% and 67% of the river and stream samples, respectively. These results strongly support the need for simultaneous monitoring of various pesticides and their degradation products, identification of degradation products and their MFP, and characterization of their behavior in water purification processes.
- Japan Society on Water Environmentの論文
著者
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Takanashi Hirokazu
Department Of Applied Chemistry Oita University
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Saito Miho
Division Of Internal Medicine National Hospital Organization Tokushima Hospital
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Kondo Takashi
Division of Cardiology, Department of Internal Medicine, Aichi Medical University School of Medicine
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FUJIE Koichi
Division of Natural Environment and Information, Faculty of Environment and Information Sciences, Yokohama National University, Japan
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MATSUSHITA Taku
Department of Environmental Engineering, Faculty of Engineering, Hokkaido University, Japan
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KAMEYA Takashi
Division of Natural Environment and Information, Faculty of Environment and Information Sciences, Yokohama National University, Japan
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TORIUMI Wataru
Division of Natural Environment and Information, Faculty of Environment and Information Sciences, Yokohama National University, Japan
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