波形增强的TD-GC-MS分析气体样本中的分子模式变化,这些变化是由呼吸采样设备引起的
Nicoletta Ardito1, Arianna Elefante2, Marilena Giglio3
1Politecnico di Bari, Via Amendola 173, Bari, 70126, ITALY.
这项研究开发了一种计算方法,用于检测来自呼吸采样设备的挥发性有机化合物 (VOC) 工件. 确定了四种新的VOC,表明Mistral呼吸采样器特有的材料降解.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 生物医学工程 生物医学工程
背景情况:
- 呼吸分析是一种非侵入性诊断工具.
- 准确检测挥发性有机化合物 (VOC) 是至关重要的.
- 采样硬件可以引入文物,混结果.
研究的目的:
- 开发一种用于从呼吸采样硬件中识别VOC文物的计算方法.
- 要区分内源性VOC和采样设备引入的VOC.
- 为了精确确定源自Mistral尾潮呼吸采样器的特定VOCs.
主要方法:
- 使用Mistral采样器和ACTI-VOC PLUS参考收集了环境空气.
- 挥发性有机物被使用热溶解 (TD) 管进行缩.
- 分析是使用TD气色谱-质谱法 (TD-GC-MS) 进行的.
- 静止波波变换 (SWT) 处理差异色谱以检测工件.
主要成果:
- 在Mistral样本中始终检测到四种新的VOC,但在对照中没有.
- 已识别的化合物包括1,3,5-三,1,3,5,7-四, (乙酸) 乙酸和N,N-二甲基形式胺.
- 这些挥发性有机物表明了聚合物降解和Mistral采样器的物质脱气.
结论:
- 该计算方法有效地从呼吸采样硬件中识别VOC文物.
- 特定的VOC与Mistral呼吸采样器中的物质降解有关.
- 这种方法通过排除硬件诱导的污染物来提高呼吸分析的可靠性.
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