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Citation: WANG Si-Wei, LIU Yan-Ping, SUN Hai-Bin. Determination of Pyraclostrobin and Its Metabolite Residues in Pollens and Honeys of Litchi By Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(5): 704-709. doi: 10.11895/j.issn.0253-3820.171249 shu

Determination of Pyraclostrobin and Its Metabolite Residues in Pollens and Honeys of Litchi By Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry

Guangdong Provincial Key Laboratory of High Technology for Plant Protection/Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China

Received Date: 13 September 2017
Revised Date: 20 January 2018

An effective method was developed for determination of pyraclostrobin and BF 500-3 residues in pollen and honey of litchi by QuEChERS coupled with ultra performance liquid chromatography-tandem mass spectrometry. The samples were extracted by acetonitrile and cleaned by primary secondary amine (PSA) and C₁₈. In the positive ion mode and multi reaction monitoring mode, the analytes were quantified by the matrix matching standard solutions, and the pretreatment and mass spectrometry conditions were evaluated. The matrix matched standard solutions of pyraclostrobin and its metabolite BF 500-3 showed good linearities in the concentration range of 1-100 μg/L, with the correlation coefficients (R²) of 0.991-0.999. The average recoveries were 87.0%-97.8% with relative standard deviations of 1.3%-3.7%. The limit of detection (LOD) and the limit of quantification (LOQ) were 0.08-0.20 μg/kg and 0.20-0.50 μg/kg, respectively. The method was easy, quick and highly sensitive, and was suitable for quick determination of pyraclotrobin and its metabolites in pollen and honey of litchi.
- Ultra performance liquid chromatography-tandem mass spectrometry,
- Pyraclostrobin,
- Metabolite,
- Pollen,
- Honey
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