一种 NO3自由基双分子反应速率常数
的测量方法

doi:10.3969/j.issn.1007-5461.2025.05.005

量子电子学报 ›› 2025, Vol. 42 ›› Issue (5): 629-640.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

陈亮 1,2, 胡仁志 2*, 谢品华 1,2*, 童金钊 3, 林川 2, 杨欢 2

1 中国科学技术大学环境科学与光电技术学院, 安徽合肥 230026; 2 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, 安徽合肥 230031; 3 安徽省人工影响天气办公室, 安徽合肥 230031

收稿日期:2024-11-27 修回日期:2025-02-27 出版日期:2025-09-28 发布日期:2025-09-28
通讯作者: E-mail: rzhu@aiofm.ac.cn; phxie@aiofm.ac.cn E-mail:E-mail: rzhu@aiofm.ac.cn; phxie@aiofm.ac.cn
作者简介:陈亮 ( 1997 - ), 四川达州人, 研究生, 主要从事环境光学方面的研究。E-mail: lchen@aiofm.ac.cn
基金资助:
国家自然科学基金重点项目 (42030609), 国家重点研发计划 (2022YFC3700301)

Measurement method for rate constant of NO3 radical bimolecular reaction

CHEN Liang 1,2 , HU Renzhi 2*, XIE Pinhua 1,2*, TONG Jinzhao 3 , LIN Chuan 2 , YANG Huan 2

1 College of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China; 2 Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 3 Anhui Weather Modification Office, Hefei 230031, China

Received:2024-11-27 Revised:2025-02-27 Published:2025-09-28 Online:2025-09-28

摘要/Abstract

摘要： 本文将NO3自由基稳定合成源技术、流动管反应控制技术与光腔衰荡光谱技术进行了有机结合, 实现了NO3 自由基双分子反应速率常数的准确测量。首先在实验室进行了相关参数的表征, 对腔衰荡吸收光谱测量系统的探测限和采样损耗进行了测量, 优化了流动管壁损失。随后利用该装置对NO3自由基与异戊二烯的双分子反应速率常数进行了测量, 测得该双分子反应速率常数为(7.83 ± 2)×10−13 cm3 ⋅molecule−1 ⋅s −1 , 该值与国际纯粹与应用化学联合会推荐值接近, 证实了本研究测量方法的可靠性。未来该系统可用于测量NO3自由基与不同挥发性有机化合物的反应活性, 为后续探究大气NO3自由基总反应特性提供有力支撑。

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

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.

Key words: spectroscopy, cavity decay spectroscopy technology, NO3 radical, bimolecular reaction rate constant, flow tube, isoprene

中图分类号:

O433.4

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.

CHEN Liang , , HU Renzhi , XIE Pinhua , TONG Jinzhao , LIN Chuan , YANG Huan . Measurement method for rate constant of NO3 radical bimolecular reaction[J]. Chinese Journal of Quantum Electronics, 2025, 42(5): 629-640.

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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

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