量子电子学报2025，Vol.42Issue(5)：629-640,12.DOI:10.3969/j.issn.1007-5461.2025.05.005
一种NO3自由基双分子反应速率常数的测量方法
Measurement method for rate constant of NO3 radical bimolecular reaction
摘要
Abstract
By integrating NO3 radical stable synthesis source technology,flow tube reaction control technology,and optical cavity ring-down spectroscopy technology,this work achieved precise measurement of the NO3 radical bimolecular reaction rate constant.Firstly,the key parameters of the measurement system were characterized in the laboratory,the detection limit and transmission loss of the cavity ring-down spectroscopy measurement system were determined,and the flow tube wall loss was optimized.Then,the rate constant of bimolecular reaction between NO3 radical and isoprene was measured using this device,and the constant was determined to be(7.83±2)×10-13 cm3⋅molecule-1⋅s-1,which is close to the value recommended by the International Union of Pure and Applied Chemistry,confirming the reliability of the measurement method developed in this study.In the future,this system can be used to measure the reactivity of NO3 radicals with various volatile organic compounds,providing strong support for further investigations into the total reactivity of NO3 radical in the atmosphere.关键词
光谱学/腔衰荡光谱技术/光谱学/NO3自由基/双分子反应速率常数/流动管/异戊二烯Key words
spectroscopy/cavity decay spectroscopy technology/NO3 radical/bimolecular reaction rate constant/flow tube/isoprene分类
数理科学引用本文复制引用
陈亮,胡仁志,谢品华,童金钊,林川,杨欢..一种NO3自由基双分子反应速率常数的测量方法[J].量子电子学报,2025,42(5):629-640,12.基金项目
国家自然科学基金重点项目(42030609),国家重点研发计划(2022YFC3700301) （42030609）
