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

作者：Chen Dawei; Zhang Yiping; Miao Hong^*; Zhao Yunfeng; Wu Yongning

来源：Journal of Agricultural and Food Chemistry, 2015, 63(44): 9855-9862.

DOI：10.1021/acs.jafc.5b03973

• dispersive micro solid phase extraction
• water
• triazine
• high-resolution mass spectrometry

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 high-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 T-3 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 0.2-30.0 ng/L for the 30 triazines, with recoveries in the range of 70.5-112.1%, 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.

• 出版日期2015-11-11
• 单位国家海洋局第三海洋研究所; 国家食品安全风险评估中心