分析测试学报2025，Vol.44Issue(3)：486-492,7.DOI:10.12452/j.fxcsxb.24121717
气相色谱-质谱联用法测定润滑油中N-甲基吡咯烷酮残留量
Determination of N-Methyl-2-pyrrolidone Residue in Lubricating Oil by Gas Chromatography-Mass Spectrometry
摘要
Abstract
A method for the determination of N-methyl-2-pyrrolidone(NMP)residues in lubricating oil using gas chromatography-mass spectrometry(GC-MS)has been established.Lubricating oil sam-ples were dissolved in tert-butyl methyl ether,and then precipitated by adding acetonitrile.The tar-get substance NMP was retained in the supernatant and determined by gas chromatography-mass spectrometry with external standard method for quantification.Results showed that NMP had a good linear relationship in the range of 0.5 mg/L to 50.0 mg/L,the detection limit was 8.0 mg/kg,and the quantitation limit was 20.0 mg/kg.At three spiked levels of 20 mg/kg,100 mg/kg and 200 mg/kg,the recoveries of NMP in different types of lubricating oils were between 96.2%and 108%,with relative standard deviations(RSDs)ranging from 0.99%to 4.5%.The method is quick,easy,accu-rate and sensitive,which is suitable for determination of NMP in lubricating oil.关键词
N-甲基吡咯烷酮/润滑油/气相色谱-质谱/溶解沉淀法Key words
N-methyl-2-pyrrolidone/lubricating oil/gas chromatography-mass spectrometry/dissolution-precipitation method分类
化学化工引用本文复制引用
王昱霞,张伟亚,陈向阳,李成发,陈国峰..气相色谱-质谱联用法测定润滑油中N-甲基吡咯烷酮残留量[J].分析测试学报,2025,44(3):486-492,7.基金项目
海关总署科研项目(2024HK071) （2024HK071）
宁波市公益性科技计划项目(2023S047) （2023S047）
