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China Surfactant Detergent & Cosmetics ›› 2023, Vol. 53 ›› Issue (11): 1340-1344.doi: 10.3969/j.issn.2097-2806.2023.11.014

• Analytical methods and testing • Previous Articles     Next Articles

Determination of cannabidiol and tetrahydrocannabinol in cosmetics by isotope dilution-gas chromatography-mass spectrometry

Li Changyu*(),Hu Dan,Liao Shangfu,Lu Yan,Yang Ming   

  1. Zhejiang FangYuan Test Group Co., Ltd., Hangzhou, Zhejiang 310018, China
  • Received:2022-10-15 Revised:2023-10-31 Online:2023-11-22 Published:2023-11-21
  • Contact: *Tel.: +86-571-85126980, E-mail: 89087252@qq.com.

Abstract:

A method for the determination of cannabidiol (CBD) and tetrahydrocannabinol (THC) in cosmetics was established by using isotope dilution-gas chromatography-mass spectrometry (GC-MS). The samples were ultrasonically extracted with acetonitrile, then the sample solution was prepared after centrifugation, and the analytes were separated on HP-5MS column (30 m×250 μm×0.25 μm), detected by full-scan and selected-ion monitoring, quantified by isotope (Tetrahydrocannabinol-D3,THC-D3) internal standard method. The results show that the standard curves have good linear relationship in the range of 0.05-1.0 mg/L for CBD and THC, with the linear correlation coefficients greater than 0.995. The detection limits of the method (S/N=3) are 0.05, 0.20 mg/kg, respectively, and the spiked recoveries in three levels are between 92.0%-111.1% with the RSDs of 0.40%-9.9%. The method is simple, rapid, high sensitivity and suitable for the determination of cannabidiol and tetrahydrocannabinol in cosmetics.

Key words: cannabidiol, tetrahydrocannabinol, gas chromatography-mass spectrometry(GC-MS), cosmetics, isotope internal standard method

CLC Number: 

  • TQ658