超高效液相色谱-串联质谱法测定甘蓝中氯噻啉的残留量

Determination of Chlorothiazoline Residues in Cabbage by Ultra Performance Liquid Chromatography Tandem Mass Spectrometry

本文使用乙腈对样品进行提取,用超高效液相色谱-串联质谱仪进行定性及定量。结果表明,在基质标准溶液为0.0087~0.0870 mg·L^-1时,线性关系良好,相关系数0.9979。方法检出限为0.01 mg·kg^-1,在0.01、0.100、1.00 mg·kg^-1添加水平下,甘蓝中氯噻啉回收率为89%~130%,相对标准偏差≤12%。该法有效提高了前处理速度,结果准确性好。

In this paper,acetonitrile was used to extract the sample,and ultra performance liquid chromatography tandem mass spectrometry was used for qualitative and quantitative analysis.The results showed that the linear relationship was good when the matrix standard solution was 0.0087~0.0870 mg·L^-1,and the correlation coefficient was 0.9979.The detection limit was 0.01 mg·kg^-1.The recoveries of chlorothialine in cabbage ranged from 89%to 130%with relative standard deviation less than 12%at the addition levels of 0.01,0.100 and 1.00 mg·kg^-1.This method can effectively improve the speed of pretreatment and the accuracy of the results is good.