Determination of pyraclostrobin residues in pumpkin,asparagus,cress and papaya by LC-MS

doi:10.14088/j.cnki.issn0439-8114.2019.05.022

Abstract

Abstract: A rapid and efficient method for determination of pyraclostrobin in pumpkin, asparagus, cress and papaya was established in this study. Pumpkin, asparagus, cress and papaya samples were extracted by acetonitrile, and purified by PSA and C18. Then the target compound was analyzed with liquid chromatography mass spectrometry after its separation in AQ-C18 column. The recovery of this method was 88.4%~110.0% with the coefficient of variation from 0 to 7.7%, which met the requirements of pesticide residue analysis in crops. The linear relationship was good between 0.01 mg/L and 1.00 mg/L. This method was simple, rapid, sensitive and accurate. It was suitable for daily determination of pyraclostrobin in pumpkin, asparagus, cress and papaya.

Key words: pyraclostrobin, liquid chromatography mass spectrometry（LC-MS）, determination

CLC Number:

O657.7⁺2

CHEN Xin, LIU Qian, LIU Jun, CHENG Yun-bin, SHEN Jing. Determination of pyraclostrobin residues in pumpkin,asparagus,cress and papaya by LC-MS[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(5): 92-95.

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