秋田県内の田園地河川水中の浸透移行性殺虫剤及びその代謝物の濃度分布

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タイトル別名
  • Distribution of Systemic Insecticides and Their Metabolites in Rural River Water in Akita Prefecture
  • アナリティカルレポート 秋田県内の田園地河川水中の浸透移行性殺虫剤及びその代謝物の濃度分布
  • アナリティカルレポート アキタ ケンナイ ノ デンエンチ カセン スイチュウ ノ シントウ イコウセイ サッチュウザイ オヨビ ソノ タイシャブツ ノ ノウド ブンプ

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<p>A simultaneous determination method for new systematic insecticides and their metabolites in river water was developed by liquid chromatography tandem mass spectrometry (LC-MS/MS). The pretreatment method using solid-phase extraction (SPE) combined with clean up by a graphited carbon cartridge were optimized in this study, and the developed method was applied to a survey of river water. From the results of comparing SPE cartridges and eluate solutions, an Oasis HLB plus cartridge with 5 mL of methanol as an eluate were suitable for the method. To improve the recovery rates of 6-chloronicotinic acid and N-(6-chloro-3-pyridylmethyl)-N-ethyl-N’-methyl formamidine (CPMF), the sample pH was adjusted for 4.75 before loading SPE cartridge. The recovery rates of analytes using developed method ranged from 69-130 % (RSD: 1.2-15 %), except for 6-chloronicotinic acid. The linearity of all the analytes was greater than 0.99. The method detection limits (MDL) ranged from 0.2 to 4 ng L−1. Water samples collected at 6 different sites in a river located in Akita pref. were analyzed by the developed method. Dinotefuran, thiamethoxam and clothianidin were detected in the range of 3-53 ng L−1.</p>

収録刊行物

  • 分析化学

    分析化学 68 (11), 885-895, 2019-11-05

    公益社団法人 日本分析化学会

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