食品科学 ›› 2024, Vol. 45 ›› Issue (16): 262-267.doi: 10.7506/spkx1002-6630-20230728-326

• 安全检测 • 上一篇    

基于气相色谱-质谱法测定茶叶中8 种卡西酮类新精神活性物质

唐庆强,王君,张惠琴,王巧霞,曹晓钢,吴春灯,杨方   

  1. (1.福州海关技术中心,福建 福州 350001;2.三明海关综合技术服务中心,福建 三明 365001;3.拉萨海关技术中心,西藏 拉萨 850002;4.上海海关动植物与食品检验检疫技术中心,上海 200135;5.福州大学生物科学与工程学院,福建 福州 350108)
  • 发布日期:2024-08-06
  • 基金资助:
    福建省自然科学基金项目(2020J1098);福建省科技计划项目(2021I0033); 海关总署科研项目(2020HK188;2021HK197);福州市科技计划项目(2020-S-34);金华市科技计划项目(2022-4-23)

Determination of Eight New Psychoactive Substances Derived from Cathinones in Tea by Gas Chromatography-Mass Spectrometry

TANG Qingqiang, WANG Jun, ZHANG Huiqin, WANG Qiaoxia, CAO Xiaogang, WU Chundeng, YANG Fang   

  1. (1. Fuzhou Customs Technical Center, Fuzhou 350001, China; 2. Sanming Customs Comprehensive Technology Service Center, Sanming 365001, China; 3. Technology Center of Lhasa Customs District, Lhasa 850002, China; 4. Shanghai Customs Animal, Plant and Food Inspection and Quarantine Technical Center, Shanghai 200135, China; 5. College of Biological Sciences and Engineering, Fuzhou University, Fuzhou 350108, China)
  • Published:2024-08-06

摘要: 在优化前处理条件和色谱分离的基础上,建立同时测定茶叶中常见8 种卡西酮类新精神活性物质的气相色谱-质谱测定方法。优化样品的提取、净化、色谱及质谱条件,最终选择用碱化甲醇提取,N-丙基乙二胺填料和HLB固相萃取小柱净化,经DB-17MS毛细管柱(30 m×0.25 mm,0.25 μm)分离,使用电子电离源,选择离子监测模式进行质谱监测。结果表明:该方法在0~200 μg/L质量浓度范围具有良好的线性关系,相关系数(R2)均大于0.998;方法的检出限(RSN=3)和定量限(RSN=10)分别为7、25 μg/kg;在阴性样品中进行1、2、10 倍定量限3 个水平的加标回收实验,8 种卡西酮类化合物的加标回收率为67.2%~117.6%,相对标准偏差(n=6)为4.3%~12.3%。该方法稳定性好、灵敏度高,能够满足茶叶样品中卡西酮的检测要求。

关键词: 卡西酮;茶叶;气相色谱-质谱;新精神活性物质;筛查

Abstract: In this study, an analytical method based on gas chromatography-mass spectrometry (GC-MS) was developed for the simultaneous determination of 8 common psychoactive substances derived from cathinone compounds in tea. Extraction, clean-up and chromatographic and mass spectrometric conditions were optimized. As a result, an alkaline solution containing methanol was selected as the extraction solvent, and the extract was cleaned up on an HLB solid-phase extraction (SPE) cartridge filled with N-propylethylenediamine (PSA) and separated on a DB-17MS capillary column (30 m × 0.25 mm, 0.25 μm). The mass spectrometer was operated using an electrospray ionization (EI) source in the selected ion monitoring (SIM) mode. The calibration curves showed good linearity for the 8 analytes in the concentration range of 0–200 μg/L, with correlation coefficients (r2) higher than 0.998. The limits of detection (LOD, RSN = 3) and limits of quantification (LOQ, RSN = 10) were 7 and 25 μg/kg, respectively. The recoveries from negative samples spiked at 1 ×, 2 × and 10 × LOQ were in the range of 67.2%–117.6%, with relative standard deviations (RSD) of 4.3%–12.3% (n = 6). In summary, this method has good stability and high sensitivity, and is suitable for simultaneous determination of the psychoactive substances derived from cathinones in tea.

Key words: cathinone; tea; gas chromatography-mass spectrometry; new psychoactive substances; screening

中图分类号: