LIANG Zi-yang,LUO Hui-tai,ZHOU Xi,et al.Determination of Benvitimod in Cream Cosmetics by QuEChERS/Gas Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2023,42(06):762-767.
LIANG Zi-yang,LUO Hui-tai,ZHOU Xi,et al.Determination of Benvitimod in Cream Cosmetics by QuEChERS/Gas Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2023,42(06):762-767. DOI: 10.19969/j.fxcsxb.23021002.
Determination of Benvitimod in Cream Cosmetics by QuEChERS/Gas Chromatography-Tandem Mass Spectrometry
A method of QuEChERS/gas chromatography-tandem mass spectrometry(GC-MS/MS) was established for the determination of benvitimod added illegally in cream cosmetics.Cream samples were dispersed with saturated sodium chloride solution and extracted with acetonitrile.After purified with anhydrous magnesium sulfate,PSA and C,18,,the pretreatment samples were separated on an Agilent VF-17ms capillary column(30 m × 0.25 mm × 0.25 μm),detected by GC-MS/MS in selective reaction monitoring(SRM) mode,and quantified by the matrix-matched calibration.The pretreatment method was optimized by investigating the effects of type and volume of extraction solvent,extraction time,purification composition and dosage on the recovery of benvitimod.Under the optimal conditions,benvitimod showed a good linear relationship in the concentration range of 1-100 μg/L with a correlation coefficient(,r,2,) of 0.999 5.The limit of detection was 0.005 μg/g,and the limit of quantitation was 0.02 μg/g.The spiked recoveries for the target substance ranged from 90.0% to 96.3%,with relative standard deviations(RSDs,,n ,= 6) for repeatability of 1.5%-2.7%,and inter-RSDs and intra-RSDs both less than 10%.The method was applied to the determination of 90 cream cosmetics containing plant extracts,in which one positive sample was found.This method is convenient,accurate and sensitive,and it could provide a technical support for combating illegal addition of cosmetics and ensuring the quality and safety of cosmetics.
关键词
气相色谱-串联质谱(GC-MS/MS)分散固相萃取化妆品非法添加本维莫德
Keywords
gas chromatography-tandem mass spectrometry(GC-MS/MS)dispersed solid phase extractioncosmeticsillegal additionbenvitimod
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