固相萃取-超高效液相色谱-串联质谱法快速测定环境水样中30种极性农药

建立了固相萃取-超高效液相色谱-串联质谱快速测定环境水样中30种极性农药的方法。30种极性农药经过固相萃取(SPE)富集净化,以超高效液相色谱-串联质谱(UPLC-MS-MS)多级监测模式(MRM)外标法进行定性定量分析。结果表明:环境水样中30种极性农药的检出限为0.2～5 ng/L。对同一环境样品进行了低、中、高3个不同浓度水平的加标回收实验,平均回收率为63.7%～105.1%,相对标准偏差为4.4%～21.2%。该方法快速、灵敏、准确,可有效应用于环境水样中30种极性农药的快速监测。

Rapid Determination of 30 Polar Pesticides in Environmental Water by SPE-UPLC-Tandem Mass Spectrometry

A method for the rapid determination of 30 polar pesticides in environmental water by solid phase extraction (SPE) and super high performance liquid chromatography-tandem mass spectrometry was established. Thirty polar pesticides in water were enriched and purified by solid phase extraction (SPE),and then analyzed qualitatively and quantitatively by UPLC-MS-MS multistage monitoring model (MRM).The results showed that the detection limit of 30 polar pesticides in environmental water was 0.2-5 ng/L. In this paper, low, medium and high concentrations of samples in the same environment were tested. The average recovery was 63.7%-105.1%, and the relative standard deviation was 4.4%-21.2%. This method is rapid, sensitive and accurate,and can be effectively applied to the rapid monitoring of 30 polar pesticides in environmental water.