Citation:
CAO Meirong, MA Junmei, WANG Juan, ZHAI Hongwen, ZHAO Xiaoya, FAN Sufang. Determination of ten alkaloids in cosmetics by high performance liquid chromatography-tandem mass spectrometry[J]. Chinese Journal of Chromatography,
;2019, 37(9): 977-982.
doi:
10.3724/SP.J.1123.2019.01054
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A high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method was established for the determination of ten alkaloids in cosmetics. Extraction conditions, purification methods and instrumental parameters were optimized. The samples were ultrasonically extracted with 80% (v/v) methanol aqueous solution. The extracts were separated and filtered after centrifugation. The analytes were separated on a Waters BEH C18 column, and detected in the selected reaction monitoring mode. Ten alkaloids were quantified by the external standard method. The ten alkaloids showed good linearity with correlation coefficients (R2) greater than 0.9900. The limits of detection (LODs) and the limits of quantification (LOQs) of the ten alkaloids were in range of 5.0-12.5 μg/kg and 12.5-50.0 μg/kg, respectively. The average spiked recoveries in the cosmetics ranged from 70.91% to 116.75%, and the relative standard deviations (RSDs) ranged from 0.49% to 9.98%. The method can be used for the rapid screening and quantitative analysis of ten alkaloids in cosmetics.
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