Zheng Kunming, Guo Yuanjun, Hu Xunke, Yu Yaping, Chen Jinxing, Su Jianfeng, Lian Wenhao, Wu Xiaoping, Meng Xingang
Fujian CCIC-Fairreach Food Safety Testing Co., Ltd, Fuzhou, China.
College of Biological and Environmental Engineering, Jingdezhen University, Jingdezhen, China.
J Environ Sci Health B. 2023;58(2):150-157. doi: 10.1080/03601234.2023.2173926. Epub 2023 Feb 2.
A modified QuEChERS pretreatment method and LC-MS/MS technique were performed to simultaneously determine four pesticide (Hexachlorophene, Dinex, Dinosam, Dinoterb) residues in agricultural products. Through the optimization of LC-MS/MS detection parameters in SIM mode, the optimal instrument conditions are obtained. The modified QuEChERS method was used to pretreat the samples. Solid phase extractants PSA, C18 and GCB were used for sample purification. The research results showed that the correlation coefficients of the four pesticides were all greater than 0.991, which had a good linear relationship. The limits of quantitation (LOQ) of the four pesticides were 0.05-0.56 μg/kg. The recoveries were 70.51-113.20% with relative standard deviations (RSDS) of 1.6-11.2%. The developed method can provide reliable data support for the subsequent simultaneous detection of these four pesticides.
采用改进的QuEChERS预处理方法和液相色谱-串联质谱（LC-MS/MS）技术同时测定农产品中4种农药（六氯酚、敌菌丹、地茂散、地乐酚）残留量。通过在选择离子监测（SIM）模式下对LC-MS/MS检测参数进行优化，获得了最佳仪器条件。采用改进的QuEChERS方法对样品进行预处理，使用固相萃取剂N-丙基乙二胺（PSA）、十八烷基硅烷键合硅胶（C18）和石墨化炭黑（GCB）对样品进行净化。研究结果表明，4种农药的相关系数均大于0.991，线性关系良好。4种农药的定量限为0.050.56μg/kg，回收率为70.51%113.20%，相对标准偏差为1.6%~11.2%。所建立的方法可为后续同时检测这4种农药提供可靠的数据支持。
