DOI: 10.1016/j.atmosenv.2015.01.023
Scopus记录号: 2-s2.0-84921934923
论文题名: Quantifying the impact of nitric oxide calibration gas mixture oxidation on reported nitrogen dioxide concentrations
作者: Sweeney B ; P ; , Quincey P ; G ; , Green D ; , Fuller G ; W
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 105 起始页码: 169
结束页码: 172
语种: 英语
英文关键词: Air quality
; Calibration
; Chemiluminescence
; Nitrogen dioxide
Scopus关键词: Air quality
; Calibration
; Chemiluminescence
; Cylinders (shapes)
; Gas mixtures
; Gases
; Mixtures
; Nitric oxide
; Nitrogen oxides
; Air quality monitoring stations
; Ambient air
; Calibration gas
; Gas standards
; Limit values
; Nitrogen dioxides
; Nitrogen
; nitric oxide
; nitrogen dioxide
; air quality
; ambient air
; atmospheric chemistry
; calibration
; concentration (composition)
; luminescence
; nitric oxide
; nitrogen dioxide
; nitrogen oxides
; oxidation
; air monitoring
; air quality
; ambient air
; Article
; calibration gas
; chemoluminescence
; degradation
; European Union
; oxidation
; priority journal
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Chemiluminescent analysers for measuring nitric oxide (NO) and nitrogen dioxide (NO2) in ambient air are generally calibrated with certified gas standard cylinders of NO in nitrogen. Verification of the NOx and NO amount fractions has been carried out on many such 'on-site' calibration cylinders at air quality monitoring stations. These measurements indicate that significant numbers of these gas mixtures have become somewhat degraded, with several percent of the NO oxidised to NO2. The effect of not compensating for this degradation on reported concentrations is discussed. If such degradation is not quantified and corrected for, there will be a systematic under-reporting of NO2 concentrations, which, due to the non-linearity of the effect, could reduce high reported NO2 concentrations at kerbside sites by around 20%. This could significantly reduce the number of reported exceedances of the NO2 limit value at such sites, compared to results obtained where there is no degradation of the NO cylinder. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81987
Appears in Collections: 气候变化事实与影响
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作者单位: Analytical Science Division, National Physical Laboratory, Teddington, Middlesex, United Kingdom; Environmental Research Group, King's College London, 150 Stamford Street, London, United Kingdom
Recommended Citation:
Sweeney B,P,, Quincey P,et al. Quantifying the impact of nitric oxide calibration gas mixture oxidation on reported nitrogen dioxide concentrations[J]. Atmospheric Environment,2015-01-01,105