Citation: MENG Zhi-Juan, SUN Wen-Yi, ZHAO Li-Min, HUANG Yun-Xia, MA Jun-Mei, FAN Su-Fang, LI Qiang, ZHANG Yan, PAN Can-Ping. Rapid Screening of 70 Kinds of Pesticide Residues in Agricultural Products by Gas Chromatography-Electrostatic Field Orbit Trap High Resolution Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, ;2019, 47(8): 1227-1234. doi: 10.19756/j.issn.0253-3820.181816 shu

Rapid Screening of 70 Kinds of Pesticide Residues in Agricultural Products by Gas Chromatography-Electrostatic Field Orbit Trap High Resolution Mass Spectrometry

1.
Hebei Food Inspection and Research Institute, Key Laboratory of Food Safety of Heibei Province, Shijiazhuang 050091, China;
2.
College of Science, China Agricultural University, Beijing 100193, China

Received Date: 29 December 2018
Revised Date: 16 June 2019

Fund Project: This work was supported by the Guangxi Science and Technology Major Project (No. AA17204043) and Beijing Municipal Science and Technology Project (No. D171100002017001).

A new method for screening pesticide residues in agricultural products by gas chromatography-electrostatic field orbitrap high resolution mass spectrometry (Orbitrap GC-MS) was developed. The samples were extracted with acetonitrile (dry sample soaked in water first), and then purified with SinChERS-Nano column. Accurate mass measurements of the target pesticide compounds in full scan mode could eliminate matrix interference effectively. A total of 12 kinds of typical samples (leek, rape, cucumber, cabbage, citrus, apple, grape, tomato, mushroom, rice, soybean and peanut) were evaluated. The linear ranges of the 70 kinds of pesticides were form 0.5 to 200 μg/kg with good correlation coefficients of greater than 0.9950. The limits of detection (LODs) were 0.3-3.0 μg/kg and the limits of quantification (LOQs) were 1.0-10.0 μg/kg. The average recoveries at three spiked levels were in the range of 73.2%-123.4%, 72.4%-121.3%, 73.8%-112.6% and 73.5%-122.3% in leek, mushroom, rice and peanut, respectively, with relative standard deviations (RSDs) of 2.2%-11.3%, 2.4%-11.1%, 3.2%-11.3% and 3.3%-11.1%. The method was simple and sensitive, and suitable for the rapid screening and confirmation of multi-residue pesticides in agricultural products.
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沈阳化工大学材料科学与工程学院沈阳 110142