大气压冷等离子体处理水溶液:液相活性粒子检测方法综述

Aqueous Solutions Treated by Cold Atmospheric Plasmas:a Review of the Detection Methods of Aqueous Reactive Species

近年来,大气压冷等离子体技术凭借在生物医学、材料处理、环境保护等领域展现出的良好应用潜力,受到了广泛关注。越来越多的研究结果显示等离子体产生的活性粒子在应用中起到了关键作用,但由于被处理物往往处于潮湿环境甚至水溶液中,等离子体产生的气相活性粒子首先需要进入水溶液并转化为液相活性粒子才能起到直接的作用。等离子体产生的液相活性粒子种类繁多,但目前的检测技术存在方法少、特异性差且定量困难等问题,严重制约了人们对等离子体处理水溶液这一过程的认知水平,成为限制相关应用发展的瓶颈。该文整理了近年来国内外报道的液相活性粒子检测方法,对11种主要的活性氧粒子、活性氮粒子以及氢粒子的检测方法作了综述,为相关的理论和应用研究提供参考。

In recent years,cold atmospheric-pressure plasma has attracted considerable attention due to its great potential in diverse application fields such as biomedicine,material processing,and environmental protection.More and more investigation results show that the plasma-generated reactive species play a key role in these applications.Besides,it is found that targets to be treated by plasmas are always covered by a liquid layer or even immersed in liquids,making the interaction between plasma and liquid inevitable.The gaseous reactive species in cold plasma need to be converted into aqueous ones before they act on the targets.There are many kinds of aqueous reactive species generated by cold atmospheric-pressure plasma,but the cognitive level of plasma-liquid interaction and the development of related applications have been restricted by the lack of methods,poor specificity,and difficulty in quantification of the detection technology.In this paper,the detection methods for eleven kinds of reactive species in plasma-activated water solutions,including reactive oxygen species,reactive nitrogen species and hydrogen species,are summarized and introduced in detail,which can provide a reference for related theoretical and application researches.