ZHANG Jing,ZENG Min-shan,LAI Jun-min,et al.Determination of 10 N-Nitrosamines in Cosmetics by QuEChERS/Gas Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2022,41(06):916-920.
ZHANG Jing,ZENG Min-shan,LAI Jun-min,et al.Determination of 10 N-Nitrosamines in Cosmetics by QuEChERS/Gas Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2022,41(06):916-920. DOI: 10.19969/j.fxcsxb.21102203.
Determination of 10 N-Nitrosamines in Cosmetics by QuEChERS/Gas Chromatography-Tandem Mass Spectrometry
建立了QuEChERS/气相色谱-串联质谱快速测定化妆品中N-亚硝基二甲胺等10种N-亚硝胺类化合物含量的分析方法。采用QuEChERS法前处理,样品经乙腈提取后,使用EMR-Lipid dSPE增强型脂质去除净化管净化,以聚乙二醇石英毛细管柱HP-INNOWAX(30 m × 0.25 mm × 0.25 μm)分离,在多反应监测模式下分析,外标法定量。结果表明,10种亚硝胺在0.5~50 ng/mL范围内线性关系良好(,r ,> 0.999),检出限和定量下限分别为1 μg/kg和3 μg/kg。水、乳、膏霜、油、粉5种不同化妆品基质在5、50、200 μg/kg加标水平下的平均回收率为80.5%~143%,相对标准偏差(RSD)小于11%(,n ,= 6)。该方法前处理操作简便、快速,专属性强,灵敏度高,精密度、准确度均较好,可用于化妆品中10种亚硝胺含量的快速测定。
Abstract
A gas chromatography-tandem mass spectrometric(GC-MS/MS) method was established for the simultaneous detection of 10 N-nitrosamines including N-nitrosodimethylamine in cosmetics. After pretreated by QuEChERS method,the samples were extracted with acetonitrile,then purified by enhanced lipid removal products(EMR-Lipid dSPE). The analytes were separated on a polyethylene glycol quartz column HP-INNOWAX(30 m × 0.25 mm × 0.25 µm),then analyzed in multiple reaction monitoring(MRM) mode,and finally quantified by the external standard method. There were good linear relationships for the 10 N-nitrosamines in the range of 0.5-50 ng/mL,with their correlation coefficients(,r,) larger than 0.999. The limits of detection and limits of quantitation were 1 µg/kg and 3 µg/kg,respectively. The average recoveries for 10 N-nitrosamines at the spiked levels of 5, 50,200 µg/kg ranged from 80.5% to 143%,with the relative standard deviations(RSDs) less than 11%(,n ,= 6). The developed method was simple,rapid,exclusive,sensitive,accurate and precise,and it could be applied in the rapid determination of 10 N-nitrosamines in cosmetics.
关键词
气相色谱-串联质谱法QuEChERS法化妆品N-亚硝胺类化合物
Keywords
gas chromatography-tandem mass spectrometryQuEChERScosmeticsN-nitrosamines
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Related Institution
Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology,Guangdong Provincial Engineering Research Center for Quality and Safety of Traditional Chinese Medicine,Institute of Analysis,Guangdong Academy of Sciences(China National Analytical Center,),Guangzhou
Institute of Analysis,Guangdong Academy of Sciences(China National Analytical Center,Guangzhou),Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology,Guangdong Provincial Engineering Research Center for Quality and Safety of Traditional Chinese Medicine
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