Determination of nitrophenolate sodium in aquatic products by HPLC-MS/MS with atmospheric pressure chemical ionization
文献类型： 外文期刊
作者： Xing, Lihong 1 ; Leng, Kailiang 1 ; Sun, Weihong 1 ; Sun, Xiaojie 1 ; Guo, Jiangtao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Agr Minist, Key Lab Testing & Evaluat Aquat Product Safety &, 106 Nanjing Rd, Qingdao 266071, Peoples R China
关键词： nitrophenolate sodium; aquatic products; liquid chromatography; atmospheric pressure chemical ionization
期刊名称：JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.069； 五年影响因子：1.055 ）
ISSN： 1061-9348
年卷期： 2016 年 71 卷 8 期
页码：
收录情况： SCI
摘要： The paper describes an efficient method for the determination of nitrophenolate sodium in aquatic products by HPLC combined with atmospheric pressure chemical ionization with tandem mass spectrometry (LC-APCI-MS/MS). Analytes were extracted from aquatic products by acetonitrile, the extracts were degreased by alumina and concentrated, the concentrated solution was further purified by Oasis HLB cartridge. Finally, the analytes were separated and detected by LC-APCI-MS/MS in negative ion mode. Excellent linearity with correlation coefficients of more than 0.995 was observed in the concentration range of 2-200 mu g/L for p-nitrophenol sodium and 2-methoxy-5-nitrophenolate sodium, and 5-200 mu g/L for omicron-nitrophenol sodium. Recovery rates of nitrophenolate sodium between 86.1-94.3% were achieved. Limit of quantitation of p-nitrophenol sodium and 2-methoxy-5-nitrophenolate sodium was 2 mu g/kg and omicron-nitrophenol sodium was 5 mu g/kg, with relative standard deviations < 10%. This method was employed in the practical analysis of spiked and naturally contaminated aquatic products.
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