Determination of Triazine Herbicides in Drinking Water by Dispersive Micro Solid Phase Extraction with Ultrahigh-Performance Liquid Chromatography鈥揌igh-Resolution Mass Spectrometric Detection

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• 作者：Dawei Chen ; Yiping Zhang ; Hong Miao ; Yunfeng Zhao ; Yongning Wu
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2015
• 出版时间：November 11, 2015
• 年：2015
• 卷：63
• 期：44
• 页码：9855-9862
• 全文大小：326K
• ISSN：1520-5118

文摘

A novel dispersive micro solid phase extraction (DMSPE) method based on a polymer cation exchange material (PCX) was applied to the simultaneous determination of the 30 triazine herbicides in drinking water with ultrahigh-performance liquid chromatography鈥揾igh-resolution mass spectrometric detection. Drinking water samples were acidified with formic acid, and then triazines were adsorbed by the PCX sorbent. Subsequently, the analytes were eluted with ammonium hydroxide/acetonitrile. The chromatographic separation was performed on an HSS T₃ column using water (4 mM ammonium formate and 0.1% formic acid) and acetonitrile (0.1% formic acid) as the mobile phase. The method achieved LODs of 0.2鈥?0.0 ng/L for the 30 triazines, with recoveries in the range of 70.5鈥?12.1%, and the precision of the method was better than 12.7%. These results indicated that the proposed method had the advantages of convenience and high efficiency when applied to the analysis of the 30 triazines in drinking water.