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土壤中20种磺酰脲类除草剂的超高效液相色谱-串联质谱测定方法
Method for Determination of 20 Sulfonylurea Herbicides in Soil by Ultra-High Performance Liquid Chromatography-Tandem Mass Spectrometry
投稿时间:2018-09-29  修订日期:2019-03-20
DOI:10.19316/j.issn.1002-6002.2019.05.19
中文关键词:  土壤  磺酰脲类除草剂  加速溶剂提取  凝胶渗透色谱  超高效液相色谱/串联质谱
英文关键词:soil  sulfonylurea herbicide  accelerated solvent extraction  gel permeation chromatography  UPLC/MS/MS
基金项目:
作者单位
赵彬 安徽省环境监测中心站,安徽 合肥230071 
张付海 安徽省环境监测中心站,安徽 合肥230071 
张敏 安徽省环境监测中心站,安徽 合肥230071 
王昭 合肥海关技术中心,安徽 合肥230032 
丁磊 合肥海关技术中心,安徽 合肥230032 
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中文摘要:
      建立了加速溶剂提取、凝胶渗透色谱法净化-超高效液相色谱/串联质谱快速测定土壤中20种磺酰脲类除草剂的方法。土壤经过冷冻干燥、粉碎过筛,用加速溶剂仪提取(ASE),经凝胶渗透色谱净化(GPC),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:土壤中20种磺酰脲类除藻剂的检出限为2~5 ng/kg。对同一环境样品进行了3个不同添加量(1、5、10 μg/L)的加标回收实验,平均回收率为65.7%~106.1%,相对标准偏差为2.3%~12.1%。该方法快速、灵敏、准确,可有效应用于土壤中20种磺酰脲类除草剂的快速监测。
英文摘要:
      A method for the rapid determination of 20 sulfonylurea herbicides in soil by ultra-high performance liquid chromatography/tandem mass spectrometry was developed in this paper. The soil was freeze-dried, crushed and sifted, extracted with an accelerated solvent apparatus(ASE), purified by gel permeation chromatography (GPC), and then qualitatively and quantitatively analyzed by UPLC-MS/MS multi-stage monitoring mode (MRM) external standard method. The results showed that the detection limit of 20 sulfonylurea herbicides in soil was 2-5 ng/kg. Three standard recovery tests with different concentrations (1,5, 10 g/L) were carried out for the same environmental sample. The average recovery was 65.7%-106.1%, and the relative standard deviation was 2.3%-12.1%. This method is rapid, sensitive and accurate, and can be effectively applied to the rapid monitoring of 20 kinds of sulfonylurea herbicides in soil.
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