Simultaneous measurement of NO and NO2 by dual-channel cavity photoacoustic spectroscopy technique
Simultaneous measurement of NO and NO2 by dual-channel cavity photoacoustic spectroscopy technique
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双通道腔光声光谱技术同时测量NO和NO2
DOI：
10.1016/j.optlastec.2022.108589
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发表时间：
2022
影响因子：
5
通讯作者：
Dan Wang
中科院分区：
文献类型：
--
作者：
Hua-wei Jin;Lei Fang;Zhi-yan Li;Dan Wang
·双通道光声光谱仪可用于NO2和NO的同时测量。进行了连续测量，并显示了仪器的稳定性。当比较PAS仪器的NO2测量与CRDS仪器在现场，结果都显示了良好的相关性，这些技术之间。·为了降低系统的局部噪声，对缓冲腔进行了优化设计和试验。在平均时间为60 s时，NO2和NOx的最低检测限分别为1.47ppb和1.50ppb，灵敏度分别为0.040 μv/ppb和0.039 μv/ppb。结果表明，该仪器具有灵敏度高、时间分辨率好、成本低、操作简单、可靠等优点，可用于现场直接测量NO 2和NOx。所开发的仪器可以导致环境空气质量监测的更广泛的应用，并将有助于更精确地研究大气中的光化学。一氧化氮（NO）和氮氧化物（NO 2）的水平是ppb量级的痕量气体，它们是化石燃料、人为燃烧、自然闪电和微生物排放的主要产物，对进一步分析空气质量具有重要意义。光声光谱（PAS）技术是一种基于403.65nm吸收的光谱技术。本文报道了一种用于NO2和NOx检测的双通道PAS系统。
• The dual-channel cavity photoacoustic spectroscopy instrument can be applied to simultaneous measurement of NO 2 and NO. • In order to confirm the reliability of the PAS instrument in the field atmosphere. Continuous measurement was conducted and the stability of the instrument was shown. When comparing the PAS instrument for NO 2 measurement with a CRDS instrument in the field, the results both showed a good correlation between these techniques. • In order to reduce the local noise of the system, the optimized design and test of the buffer cavity are carried out. Minimum detection limits of NO 2 and NO x were estimated to be 1.47 ppb and 1.50 ppb at an average time of 60 s with the sensitivity of 0.040 μv/ppb and 0.039 μv/ppb. • As a result, the instrument can be seen as a low-cost, simple, reliable method for the measurement NO 2 and NO x directly with good sensitivity and good time resolution in the field. The instruments developed could lead to the wider application for ambient air quality monitoring and will be useful to investigate photochemistry in the atmosphere more precisely. The levels of nitric oxide (NO) and nitrogen oxide (NO 2 ) are trace gases in the order of ppb, which are the main products of fossil fuel, anthropogenic combustion, natural lightning and microbial emissions, and are important for further analysis of air quality. Photoacoustic spectroscopy (PAS) technique, which is based on absorption at the wavelength of 403.65 nm, has been used for NO 2 measurements. In this study, a dual-channel PAS system for NO 2 and NO x detection is reported.
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DOI：
10.1590/1414-431x20154396
发表时间：
2015-12
期刊：
Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas
影响因子：
--
作者：
César AC;Carvalho JA Jr;Nascimento LF
通讯作者：
Nascimento LF
影响因子：
11.4
作者：
R. Wild;P. Edwards;W. Dubé;K. Baumann;E. Edgerton;P. Quinn;J. Roberts;A. Rollins;P. Veres;C. Warneke;E. Williams;Bin Yuan;S. Brown
通讯作者：
R. Wild;P. Edwards;W. Dubé;K. Baumann;E. Edgerton;P. Quinn;J. Roberts;A. Rollins;P. Veres;C. Warneke;E. Williams;Bin Yuan;S. Brown
DOI：
10.1007/s00340-010-4253-x
发表时间：
2010-10
期刊：
Applied Physics B
影响因子：
--
作者：
Irene Ventrillard-Courtillot;Ella Sciamma O’Brian;S. Kassi;G. Méjean;D. Romanini
通讯作者：
Irene Ventrillard-Courtillot;Ella Sciamma O’Brian;S. Kassi;G. Méjean;D. Romanini
影响因子：
3.8
作者：
N. Wagner;W. Dubé;R. Washenfelder;C. Young;I. Pollack;T. Ryerson;S. Brown
通讯作者：
N. Wagner;W. Dubé;R. Washenfelder;C. Young;I. Pollack;T. Ryerson;S. Brown
DOI：
10.1063/1.1686726
发表时间：
1974-06
期刊：
The Review of scientific instruments
影响因子：
--
作者：
B. Ridley;L. Howlett
通讯作者：
B. Ridley;L. Howlett