液体クロマトグラフィー/ソニックスプレーイオン化質量分析法による河川水中のダイムロンの分析

概要

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A liquid chromatography/sonic spray ionization mass spectrometry (LC/SSI-MS) in conjunction with solid-disk extraction has been developed to assay dymron in river-water samples. The mean recovery of dymron from pure water at a concentration of 0.01 mg/l was 89%, and the limit of detection was 50 pg (S/N=3). The repeatability of ion intensity with a concentration of 1 mg/l was 2.9% RSD (n=5). The positive ionization produced a typical [M+H]^+ molecula-related ion of dymron(m/z=269). The extracts from river-water samples included interfering substances. Our result shows MS/MS product ion was detected at a m/z of 151 both dymron and extract from river-water samples, thus suggesting that river-water samples contained dymron.
2001-02-05