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Citation: PENG Jie, GAN Jinhua, JU Xiaoqian, CHEN Jianwu, HE Li. Determination of chlorpyrifos residues in the paddy field aquatic products by ultra performance liquid chromatography-tandem mass spectrometry[J]. Chinese Journal of Chromatography, ;2019, 37(7): 729-734. doi: 10.3724/SP.J.1123.2019.01026 shu

Determination of chlorpyrifos residues in the paddy field aquatic products by ultra performance liquid chromatography-tandem mass spectrometry

PENG Jie ^1, ,
GAN Jinhua ^1,2 ,
JU Xiaoqian ¹ ,
CHEN Jianwu ¹ ,
HE Li ^1,2

1.
Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Fishery Quality Supervision and Testing Center, Ministry of Agriculture and Rural Affairs of the P. R. China, Fishery Products Quality Safety Risk Assessment Laboratory(Wuhan) of Ministry of Agriculture and Rural Affairs of the P. R. China, Wuhan 430223, China;
2.
Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs of the P. R. China, Beijing 100141, China

Received Date: 21 January 2019

Fund Project: Central Public-Interest Scientific Institution Basal Research Fund, Chinese Academy of Fishery Sciences (CAFS) (No. 2018HY-ZD0603)

A method was developed for the determination of chlorpyrifos residues in paddy field aquatic products by ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Samples were extracted with acetonitrile and purified by using 0.2 g primary secondary amine (PSA) sorbent and 1.2 g MgSO₄. The target compound was separated on a Hypersil GOLD C₁₈ column (100 mm×2.1 mm, 5 μm), and was determined using a heated electrospray ionization (HESI) source in the positive ion selective reaction monitoring (SRM) mode. The analyte was quantified with external standard using the matrix-matched standard calibration curve method. The results showed that good linearities were obtained in the range of 0.5-100.0 μg/L, and the correlation coefficients were greater than 0.999. The spiked recoveries of chlorpyrifos ranged from 86.2% to 103.6% with RSDs of 3.5%-7.6% (n=6). The limits of detection and quantification were 0.25 μg/kg and 0.5 μg/kg, respectively. This method is simple, quick, sensitive, and suitable for the rapid determination and analysis of chlorpyrifos residues in paddy field aquatic products.
- ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS),
- QuEChERS,
- chlorpyrifos,
- paddy field aquatic products
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