Simultaneous analysis of herbicide metribuzin and its transformation products in tomato using QuEChERS-based gas chromatography coupled to a triple quadrupole mass analyzer

2017 ◽  
Vol 133 ◽  
pp. 468-473 ◽  
Author(s):  
Yan-Li Xie ◽  
Zhen-Dong Zhao ◽  
Xiao-Ling Zhang ◽  
Lei-lei Tang ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Transformation Products ◽  
Simultaneous Analysis ◽  
Mass Analyzer ◽  
Triple Quadrupole ◽  
Quadrupole Mass ◽  
Quadrupole Mass Analyzer ◽  
Triple Quadrupole Mass Analyzer

scholarly journals Simultaneous Analysis of 260 Pesticide Residues in Agricultural Products by Gas Chromatography/Triple Quadrupole Mass Spectrometry

2007 ◽  
Vol 90 (4) ◽  
pp. 1165-1179 ◽  
Author(s):  
Masahiro Okihashi ◽  
Satoshi Takatori ◽  
Yoko Kitagawa ◽  
Yukio Tanaka
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Single Injection ◽  
Simultaneous Analysis ◽  
Agricultural Product ◽  
Local Market ◽  
Triple Quadrupole ◽  
Compound Identification ◽  
Quadrupole Mass ◽  
Reliable Monitoring

Abstract A method for simultaneous analysis of about 260 pesticides by gas chromatography coupled to tandem mass spectrometry (GC/MS/MS) with a triple quadrupole analyzer (QqQ) has been studied. The pesticides were extracted with acetonitrile and cleaned up by a bilayer cartridge. A single injection method was developed for the monitoring of all of the targeted pesticides. Two MS/MS transitions were selected for each analyte using the intensity ratio obtained from them as a confirmatory parameter. By using matrix-matched standards, 260 pesticides could be determined in most matrixes with recoveries of 70120% and a standard deviation of 20 at 2 different fortification levels of 0.02 and 0.1 g/g. The developed method was applied to the monitoring of 173 agricultural product samples from the local market. The sensitivities of this method were lower than with most of the selective GC detectors, such as flame photometric or single MS. The selectivity of QqQ gives a very clean chromatogram, making compound identification and confirmation easy. The quick and reliable monitoring was achieved by combination with rapid extraction and cleanup.

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