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| 基于QuEChERS提取法优化的液相色谱-串联质谱法测定水中多种除草剂 |
| Determination of Herbicides from Water Samples Using a QuEChERS Extraction Procedure and LC MS/MS |
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| DOI： |
| 中文关键词: 除草剂 快速简便提取法 液相色谱-串联质谱法 水质 |
| 英文关键词: Herbicides QuEChERS LC MS/MS Water quality |
| 基金项目:上海市教委植物种质资源创新平台基金资助项目（B-6010-11-001） |
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| 中文摘要: |
| 基于QuEChERS提取方法，用液相色谱-串联质谱法测定水中14种常见除草剂，通过优化样品前处理条件，使14种除草剂在0.005 mg/L～0.500 mg/L范围内线性良好，相关系数均＞0.99，方法检出限为0.005 mg/L。空白水样3个质量浓度水平的加标回收率为74.5%～109%，5次测定结果的RSD为3.9%～11.4%。将该方法用于测定长江流域3个重点城市的水体，结果为未检出。 |
| 英文摘要: |
| A multiresidue analyses method for the rapid determination of 14 herbicide residues in water samples was developed by using QuEChERS extraction and high performance liquid chromatograph tandem mass spectrometry (LC MS/MS). In the optimized QuEChERS conditions, the method had good linearity in the range of 0.005 mg/L～0.500 mg/L, with the correlation coefficient greater than 0.99. The lowest detection concentrations were all 0.005 mg/L. The spiked recoveries of blank samples were in the range of 74.5%～109%, and the relative standard deviation ranged from 3.9% to 11.4%. The results showed that the method was rapid, accurate and sensitive for the determination of 14 herbicide residues in water samples. |
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