光解速率测量技术研究进展  

Research Progress of Photolysis Rate Measurement Technology

作　　者：李浩然 曾议[1] 朱磊 窦科 常振[1] 司福祺 LI Haoran;ZENG Yi;ZHU Lei;DOU Ke;CHANG Zhen;SI Fuqi(Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics HFlPs,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院,合肥物质科学研究院安徽光学精密机械研究所环境光学与技术重点实验室,安徽合肥230031 [2]中国科学技术大学,安徽合肥230026

出　　处：《环境科学与技术》2024年第S01期48-58,共11页Environmental Science & Technology

基　　金：山西重大科技计划:污染气体空地遥感监测装备(202101090301013)。

摘　　要：光解反应作为大气中链式反应的引发反应,是产生二次污染物的重要原因,光解速率作为描述光解反应强度的关键参数,其数值的准确测量愈加重要。光解速率的测量技术自被研发起不断发展,截至目前常见的测量技术有化学光度计测量技术、滤波辐射计测量技术,以及光谱辐射计测量技术等。其中:化学光度计测量技术是最直接测量光解速率的方法,不过由于其操作流程烦琐、仪器复杂,多用于实验室测量;滤波辐射计测量技术是一种简化的测量技术,具有较宽的光谱覆盖,并且仪器体积小、重量轻,缺点是测量气体种类有限,测量误差较大,多用于机载测量;光谱辐射计测量技术是最通用的测量方法,能够同时测量多种气体的光解速率,并且目前已利用该原理生产出商业化的光解光谱仪,然而光谱辐射计测量技术对光谱仪要求较高,多用于外场实验。除此之外,还可以用经验公式法与脉冲(闪过或激光)光解法来获得特定情况下的光解速率。该文总结了光解速率测量技术在各方面的应用,并对可能的研究重点进行了展望。As the initiating reaction of the chain reaction in the atmosphere,photolysis reaction is an important reason for the generation of secondary pollutants.As a key parameter to describe the photolysis reaction intensity,the accurate measurement of its value is more and more important.The measurement technology of photolysis rate has been developing continuously since it was researched.Up to now,the commonly used measurement technologies include chemical actinometry,filter radiometry,spectroradiometer.Chemical actinometry is the most direct method to measure the photolysis rate,because of its complicated operation flow and complex instruments,it is often used in laboratory.Filter radiometer is a simplified measurement technique with wide spectrum coverage,small volume and light weight,but it has the disadvantage of limited gas types and large measurement error.Spectroradiometer is the most general measurement method,which can simultaneously measure the photolysis rate of a variety of gases,and has been used to produce commercial photolysis spectrometers based on this principle.However,spectral radiometers have high requirements for spectrometers.In addition,empirical formulas and pulsed(flash or laser)photolysis methods can be used to obtain photolysis rates for specific conditions.At the same time,the application of photolysis rate measurement technology in various aspects is further summarized,and the future research focus is prospected.

关 键 词：光解反应 光化通量 光解速率 光解光谱仪 

分 类 号：X505[环境科学与工程—环境工程]