文献类型： 外文期刊

作者： Chu, Nengming ¹ ; Xie, Manli ¹ ; Meng, Xia ¹ ; Qin, Xiaobing ³ ; Jiang, Shufang ⁴ ;

作者机构： 1.Chongqing Acad Agr Sci, Chongqing, Peoples R China

2.Agr Prod Qual & Safety Inspect & Testing Ctr MARA, Chongqing, Peoples R China

3.Agr & Rural Comm, Beijing, Peoples R China

4.Agr Dev Serv Ctr, Chongqing, Peoples R China

关键词： PCP&Na-PCP; d-SPE; QuEChERS; eggs; UPLC-MS/MS

期刊名称：CYTA-JOURNAL OF FOOD （ 影响因子：2.0； 五年影响因子：2.7 ）

ISSN： 1947-6337

年卷期： 2024 年 22 卷 1 期

页码：

收录情况： SCI

摘要： A method, improved d-SPE extration couple with ultra performance liquid chromatography tandem-mass spectrometry (UPLC-MS/MS), was developed for the determination of pentachlorophenol and its sodium salt residue in eggs. The sodium pentachlorophenol in the eggs was converted firstly into pentachlorophenol under acidic conditions, extracted by 1.5% (v/v) acetic acid/acetonitril, and the extraction solution was purified finally by disperse solid phase extraction. The composition of dispersive sorbents was optimized based on the recoveries and matrix effects. The recoveries at fortification levels of 0.5, 5 and 50.0 mu g/kg in eggs ranged from 72.2% to 89.8% with the relative standard deviations of 0.2%similar to 0.8%. The limits of quantification (LOQ) was 0.5 mu g/kg. Market samples were quantified, and PCP residues were found, but all the detection levels were below the method LOQ. We demonstrated that UPLC - MS/MS in combination with modified d-SPE can be used to routinely monitor PCP residues in egg samples.