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Citation: ZHOU Xiujin, CHEN Yu, YANG Saijun, SHAO Honghong, SHEN Biao, ZHAN Shun'an. Rapid screening of pesticide residues in imported grains by ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry[J]. Chinese Journal of Chromatography, ;2017, 35(8): 787-793. doi: 10.3724/SP.J.1123.2017.03024 shu

Rapid screening of pesticide residues in imported grains by ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry

1.
Zhoushan Entry-Exit Inspection and Quarantine Bureau, Zhoushan 316021, China;
2.
Agilent Technology China Ltd, Beijing 100102, China

Received Date: 21 March 2017

Fund Project: Science and Technology Plan Project of General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (No. 2015IK306).

A fast sample pretreatment method by fast pesticide extraction (FaPEx) method combined with ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry was developed for screening of unknown pesticide residues in imported grains. The samples were extracted with 1% (v/v) acetic acid acetonitrile solution, cleaned-up by solid phase extraction column with FaPEx cartridges, and determined by UPLC-Q-TOF. The data was compared with the library with the accurate mass, isotopic distribution, fragmentation information and retention time. The results showed that this method can be used for the rapid screening of pesticide residues in imported grains without the reference standards, and it was applied to the actual screening of imported grain samples. The method is high efficiency, sensitivity and accuracy, which can meet the requirement for the rapid screening of pesticide residues in imported grains.
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1.
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