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Citation: CHEN Jian-Bo, WU Ai-Juan, ZHAO Li, HUANG Lan-Qi, MA Lin, ZHAN Xiu-Ping. Rapid Screening of Illegally Added Chemical Fungicide in Pesticide Formulations by Ultra Performance Liquid Chromatography-Quadrupole-Time of Flight Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(3): 441-447. doi: 10.11895/j.issn.0253-3820.160766 shu

Rapid Screening of Illegally Added Chemical Fungicide in Pesticide Formulations by Ultra Performance Liquid Chromatography-Quadrupole-Time of Flight Mass Spectrometry

Shanghai Agriculture Technical Extension Service Center, Shanghai 201103, China

Received Date: 17 October 2016
Revised Date: 22 December 2016

Fund Project: This work was supported by the Shanghai Agricultural Committee Youth Growing Plan (No.2016-4-2)

A method of ultra performance liquid chromatography-quadrupole-time of flight-mass spectrometry (UPLC-Q-TOF MS) was developed to determine 35 kinds of illegally added chemical fungicides in pesticide formulations. The samples were pretreated based on the ultrasonic extraction by the solvent of methanol, and then separated on a Zorbax C₁₈ (100 mm×1.8 mm, 2.1 μm) column by a gradient elution with 0.1% formic acid aqueous solution and acetonitrile as the mobile phase. The mass spectrometer was operated under positive mode. Under the optimal conditions, the recoveries at three spiked levels (0.2, 0.4, and 2.0 mg/kg) were in the range of 81.0%-101.3% and the RSDs were 1.0%-4.4%. Based on the developed method, 100 samples were analyzed, and among which 6 samples were screened out chemical fungicides. The proposed method was high-efficient, accurate and reliable for the qualitatively screening of illegaly added chemical fungicides.
- Ultra performance liquid chromatography-quadrupole-time of flight mass spectrometry,
- Screening,
- Chemical fungicide,
- Illegally added,
- Pesticide formulations
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