根据光学发射光谱识别不同类别的VOC,使用介电屏障等离子与迷你光谱仪相结合
Jingqin Mao1, Yahya Atwa1, Zhenxun Wu2
1School of Electronics, Electrical Engineering and Computer Science, Queen's University Belfast, Belfast BT7 1NN, United Kingdom.
ACS measurement science au
|April 22, 2024
概括
一个新的3D打印的微介电屏障放电 (μHDBD) 等离子装置与光学发射光谱学 (OES) 相结合,可以识别挥发性有机化合物 (VOC). 这种方法可以根据它们独特的光谱指纹区分不同的VOC类别,甚至是混合物.
科学领域:
- 分析化学 分析化学
- 等离子体物理学的物理学
- 频谱学是一种光谱学方法.
背景情况:
- 挥发性有机化合物 (VOC) 对人类健康和环境构成风险.
- 准确和快速检测VOC对于监测和控制至关重要.
- 目前的检测方法可能缺乏特异性或需要复杂的仪器仪表.
研究的目的:
- 开发和验证一种用于识别VOC类别和单个化合物的新系统.
- 调查光学发射光谱学 (OES) 与微等离子体结合用于VOC分析的潜力.
- 证明能够区分不同的VOC结构和混合物.
主要方法:
- 使用3D打印和成型制造微介电屏障放电 (μHDBD) 等离子装置的制造.
- 将μHDBD设备与用于光学发射谱学 (OES) 分析的迷你光谱仪相合.
- 用11种不同的挥发性有机化合物测试系统的性能,分为三个类别:直链基,芳和极性有机化合物.
主要成果:
- 对不同类别的VOC观察到不同的光学发射光谱,使其能够识别.
- 对于结构相似的化合物,如n-基,观察到类似的光谱形状,而对于乙和乙醇等化合物的线强度有所不同.
- 该系统成功地识别了VOC混合物中的多种化合物,并证明了芳香化合物的侧链变化影响了排放光谱.
结论:
- HDBD-OES系统为VOCs的分类和识别提供了一个有前途的方法.
- 由等离子体产生的独特的光谱特征允许区分各种VOC及其混合物.
- 3D打印有助于创建用于先进化学传感应用的紧且潜在的成本效益高的等离子体设备.
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