DOI: 10.1016/j.atmosenv.2017.07.010
Scopus记录号: 2-s2.0-85022072573
论文题名: Seasonal variations in the NO2 artifact from chemiluminescence measurements with a molybdenum converter at a suburban site in Korea (downwind of the Asian continental outflow) during 2015–2016
作者: Jung J ; , Lee J ; , Kim B ; , Oh S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 165 起始页码: 290
结束页码: 300
语种: 英语
英文关键词: Chemiluminescence
; Molybdenum converter
; NO2 artifact
; Photolytic converter
Scopus关键词: Chemiluminescence
; Molybdenum
; Nitrogen compounds
; Chemiluminescence measurements
; Continental outflow
; Correction models
; NO conversion
; Photolytic converters
; Seasonal variation
; Suburban sites
; Winter seasons
; Nitrogen oxides
; molybdenum
; nitrogen dioxide
; artifact
; atmospheric correction
; concentration (composition)
; equipment component
; luminescence
; measurement method
; molybdenum
; nitrous oxide
; outflow
; particulate matter
; seasonal variation
; suburban area
; Article
; chemoluminescence
; circadian rhythm
; falling
; measurement
; particulate matter
; photolysis
; priority journal
; seasonal variation
; South Korea
; spring
; suburban area
; summer
; winter
; South Korea
; Taejon [South Korea]
; Taejon [Taejon (ADS)]
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: This paper investigates the NO2 artifact associated with the chemiluminescence measurement technique that uses a molybdenum converter by applying the same technique but with a photolytic converter at a site downwind of the Asian continental outflow (Daejeon, Korea). The NO2 to NO conversion efficiencies of the molybdenum and photolytic converters were found to be 100% and 95%, respectively, at an ambient level of NO2 (<100 ppbv). Two NO2 monitors equipped with molybdenum and photolytic converters were deployed for ambient NO2 measurements in Daejeon, Korea between the fall of 2015 and the summer of 2016. It was found that the monitor equipped with the molybdenum converter overestimated NO2 levels by 20.4 ± 14.7% when compared with the actual NO2 level in the Daejeon atmosphere over the entire measurement period. This NO2 artifact (ΔNO2), defined as the difference between molybdenum NO2 and photolytic NO2 values, correlated well with the PM2.5 mass concentration during the fall and winter seasons. Based on these findings, this study develops a simple correction model for ΔNO2 using the PM2.5 mass concentration during the fall and winter seasons. The model-corrected NO2 concentration correlated well with the actual NO2 values with a slope of approximately 1.0 and R2 value of 0.98 during the fall and winter seasons. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82797
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Gas Analysis, Korea Research Institute of Standards and Science, Daejeon, South Korea
Recommended Citation:
Jung J,, Lee J,, Kim B,et al. Seasonal variations in the NO2 artifact from chemiluminescence measurements with a molybdenum converter at a suburban site in Korea (downwind of the Asian continental outflow) during 2015–2016[J]. Atmospheric Environment,2017-01-01,165