Spectroscopy techniques and the measurement of molecular radical densities in atmospheric pressure plasmas
Spectroscopy techniques and the measurement of molecular radical densities in atmospheric pressure plasmas
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DOI：
10.1088/1361-6595/ab2956
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发表时间：
2019-07
影响因子：
3.8
通讯作者：
R. Peverall;G. Ritchie
中科院分区：
文献类型：
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作者：
R. Peverall;G. Ritchie
冷常压等离子体 (CAP) 在灭菌、医学和牙科等不同领域得到越来越多的应用，因为它们在接近环境温度下会引发化学反应。这些等离子体通常在传播到空气中的惰性气体流中产生，从而产生多种物质，这些物质可以在气相和液相中引起初级和次级化学反应。详细了解这种低温反应性需要对自由基物质进行选择性和灵敏的测量。在这篇综述中，我们从方法论的角度重点讨论了几种适合活性物质灵敏检测或显示出实现此目的的前景的技术。重点介绍了一系列用于测量不同相的传统和现代光谱方法，试图为 CAP 传播的自由基呈现“检测景观”。
Cold atmospheric pressure plasmas (CAPs) are finding an increasing number of applications in diverse fields such as sterilization, medicine and dentistry, because they induce chemical reactivity at near-ambient temperature. These plasmas are usually generated in noble gas flows which propagate into air, resulting in the production of a wide variety of species which can cause primary and secondary chemistry in both the gas and liquid phases. Detailed understanding of this low temperature reactivity requires selective and sensitive measurements of radical species. In this review we focus upon several techniques from a methodological point of view that are suitable for the sensitive detection of reactive species, or show promise for this purpose. A range of traditional and contemporary spectroscopic methods for measuring across different phases is highlighted in an attempt to present a ‘detection landscape’ for CAP-borne radicals.