探索者
色谱法
农药残留
化学
杀虫剂
质谱法
萃取(化学)
农学
生物
作者
Wei Song,Chuanyi Peng,Yuxin Liu,Fang Han,Haitao Zhu,Dian‐Bing Zhou,Yu Wang,Lijun Chen,Xiaodi Meng,Ruyan Hou
出处
期刊:Toxics
[MDPI AG]
日期:2023-06-16
卷期号:11 (6): 537-537
标识
DOI:10.3390/toxics11060537
摘要
An optimized quick, easy, cheap, effective, rugged, and safe (QuEChERS) technique was investigated and compared with the conventional QuEChERS technique for the simultaneous analysis of fifty-three pesticide residues in safflower using ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS).Graphitic carbon nitride (g-C3N4) consisting of a major amount of carbon and nitrogen with a large surface area was used as a QuEChERS adsorbent instead of graphitized carbon black (GCB) for safflower extraction purification. Validation experiments were performed using spiked pesticide samples, and real samples were analyzed.The linearity of the modified QuEChERS technique was evaluated with high coefficients of determination (R-2) being higher than 0.99. The limits of detection were <10 μg/kg. The spiked recoveries ranged from 70.4% to 97.6% with a relative standard deviation of less than 10.0%. The fifty-three pesticides exhibited negligible matrix effects (<20%). Thiamethoxam, acetamiprid, metolachlor, and difenoconazole were detected in real samples using an established method.This work provides a new g-C3N4-based modified QuEChERS technique for multi-pesticide residue analysis in complex food matrices.
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