通过HS-GC-MS对人类血液中氧化的定量测定:对两起致命中毒病例的法医应用
Zehong Li1, Ziyi Li1, Huosheng Qiang2
1Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China.
Forensic science international
|May 31, 2024
概括
娱乐性氧化 (N2O) 的滥用可能是致命的. 一种新的Headspace-GC-MS方法准确地量化了血液中的N2O,有助于对中毒死亡的法医调查.
科学领域:
- 法医毒理学 法医毒理学
- 分析化学 分析化学
- 环境健康 环境健康
背景情况:
- 氧化 (N2O),或笑气,越来越多地用于娱乐,造成潜在的健康风险.
- 在生物样本中精确量化N2O是具有挑战性的,因为CO2干扰和缺乏合适的内部标准.
- 由于娱乐性N2O滥用的死亡,虽然很少发生,但需要用于法医毒理学的可靠分析方法.
研究的目的:
- 开发和验证一个头空间气体染色学质谱法 (HS-GC-MS) 方法,用于在人体血液中准确的N2O量化.
- 解决以前方法的局限性,特别是二氧化碳干扰和内部标准选择.
- 在法医中毒病例中提供参考血液N2O度.
主要方法:
- 使用头空间气体染色体质谱法 (HS-GC-MS) 进行人类血液中的N2O分析.
- 使用氧化来消除二氧化碳干扰.
- 选择了n-pentane作为一个有效的内部量化标准.
主要成果:
- 经过验证的HS-GC-MS方法证明了血液中N2O在0.020.5毫升/毫升范围内具有良好的线性关系.
- 达到0.005毫升/毫升的检测极限 (LOD),确保法医分析的灵敏度.
- 将该方法应用于两个致命的N2O中毒病例,建立血度基准.
结论:
- 开发的HS-GC-MS方法可靠量化人类血液中的N2O,克服了以前的分析挑战.
- 这种方法为涉及N2O滥用的法医调查提供了关键的参考值.
- 在分析的病例中,确认窒息是死亡原因,与N2O吸入有关.
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