用HS-GC-FID:肺作为最佳组织和时间检测动态的最佳组织在死后生物样本中对乙烯化物进行验证的矩阵匹配量化
Halit Canberk Aydogan1, Ali Rıza Tümer2, Ramazan Akçan2
1Department of Forensic Medicine, Ordu University Training and Research Hospital, Ordu 52200, Türkiye.
Toxics
|December 24, 2025
概括
在6小时内提前取尸检样本对于检测易挥发性麻醉剂乙基化物 (EC) 至关重要. 建议进行肺组织分析,因为度较高,死后显著下降.
科学领域:
- 法医毒理学 法医毒理学
- 分析化学 分析化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 乙烯化物 (EC) 是一种具有高滥用潜力的挥发性麻醉剂.
- 死后法医对EC的描述是有限的.
- 了解EC的死后稳定性对于准确的毒理学分析至关重要.
研究的目的:
- 开发和验证一种方法来量化死后组织中的乙基化物.
- 为了确定乙基化物的死后稳定性和分布.
- 为检测乙基化物提供最佳采样时间和组织的指导.
主要方法:
- 使用暴露于乙化的雄性Wistar老鼠的吸入模型.
- 在曝光期间实时光电离体检测 (PID) 监控.
- 矩阵匹配的头空间气色谱-火焰电离检测 (HS-GC-FID) 用于量化.
- 血液,肺,肝脏,大脑,脂肪,脏和肌肉组织在各种死后间隔 (0-12小时) 的分析.
主要成果:
- 一种经过验证的HS-GC-FID方法显示出出色的线性,低检测和量化极限,以及高精度和回收.
- 肺组织呈现出总体上最高的乙基化物度.
- 肺部乙烯化物度在死后2至4小时之间显著下降.
- 在大多数组织中,死后6小时后乙烯化物度变得不规则.
结论:
- 建议在早期解剖采样 (6小时内) 进行最佳的乙烯化物检测.
- 优先考虑肺组织分析可以提高检测灵敏度.
- 经过验证的HS-GC-FID协议为例行法医挥发性查提供了对质谱学的经济有效和强大的替代方案.
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