Determination of nonylphenol ethoxylate metabolites in vegetables and crops by high performance liquid chromatography-tandem mass spectrometry
文献类型: 外文期刊
第一作者: Wang, Jing
作者: Wang, Jing;Wang, Rongyan;She, Yongxin;Zheng, Yongquan;Dong, Fengshou;Liu, Xingang;Cao, Weiqiang;Qian, Mingrong;Zhang, Hu;Wu, Liqing
作者机构:
关键词: nonylphenol polyethoxylates;metabolites;vegetables;crops;LC-MS/MS
期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )
ISSN:
年卷期:
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收录情况: SCI
摘要: A method has been developed for the simultaneous determination of the concentration of nonylphenol (4-NP), nonylphenol monoethoxylates (NP_1EO) and nonylphenol diethoxylates (NP_2EO) in vegetables and crops by liquid chromatography-tandem quadrupole mass spectrometry (HPLC-MS/MS). These target compounds were extracted from vegetable and crop samples with acetonitrile, and then the extracts were cleaned using solid phase extraction with graphitised carbon black tandem primary secondary amine (PSA) cartridges. The MS method enabled highly reliable identification by monitoring the corresponding ammonium adduct [M+NH_4]~+ in the positive mode for NP_1EO and NP_2EO, and the deprotonated molecule [M-H]~- in the negative mode for 4-NP. Recoveries for the spiked samples ranged from 65% to 118%. The limit of detection (LOD) of 4-NP, NPiEO and NP_2EO was 3,5 and 0.1 ug kg~(-1), respectively. This method would be useful for the quick and routine detection of the residues of 4-NP, NP_1EO and NP_2EO in vegetables and crops.
分类号: TS2
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