High Throughput Detection of 12 Herbicides in Environmental Water by UPLC-MS/MS Method with Solvent Induced Extraction
  
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KeyWord:herbicide  solvent induced extraction  ultra performance liquid chromatography-tandem mass spectrometry  environmental water
  
AuthorInstitution
CHEN Jing,WANG Bo,WANG Xin-chao,WANG Juan,WANG Yu-xin,SHEN Yue,QU De-ye 1. College of Geography and Environmental Science,Northwest Normal University,Lanzhou ,China; 2. Gansu Key Laboratory of Resource Environment and Sustainable Development of Oasis,Lanzhou ,China; 3. Lanzhou Customs Technology Center,Lanzhou ,China
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Abstract:
      An ultra performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS) with dichloromethane solvent induced extraction was established for the determination of 12 herbicides in environmental water.The volume of extractant acetonitrile,the type and dosage of extractant,and the centrifugation time were determined by single factor test.Combined with response surface analysis,an optimal pretreatment method was obtained.Meanwhile,mass spectrum parameters,chromatographic column and different mobile phases were also optimized during the establishment of the instrument method.Under the optimal conditions,the calibration curves for 12 herbicides were in good linear relationships,with their correlation coefficients(r) greater than 0.999 5.The limits of detection and the limits of quantitation were in the ranges of 0.05-0.5 μg/L and 0.2-5.0 μg/L,respectively.Average recoveries ranged from 83.0% to 110%,with relative standard deviations of 0.30%-5.0%.The method is simple,sensitive and low organic solvent consumption,and it is suitable for the high throughput inspection of actual samples.
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