globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2017.10.056
Scopus记录号: 2-s2.0-85037624047
论文题名:
Intercomparison of OH and OH reactivity measurements in a high isoprene and low NO environment during the Southern Oxidant and Aerosol Study (SOAS)
作者: Sanchez D; , Jeong D; , Seco R; , Wrangham I; , Park J; -H; , Brune W; H; , Koss A; , Gilman J; , de Gouw J; , Misztal P; , Goldstein A; , Baumann K; , Wennberg P; O; , Keutsch F; N; , Guenther A; , Kim S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 174
起始页码: 227
结束页码: 236
语种: 英语
英文关键词: Hydroxyl radical ; Intercomparison ; Isoprene ; OH reactivity ; SOAS
Scopus关键词: Aerosols ; Mass spectrometry ; Oxidants ; Analytical uncertainty ; Chemical ionization mass spectrometry ; Hydroxyl radicals ; Intercomparison exercise ; Intercomparisons ; Laser induced fluorescence ; OH reactivity ; SOAS ; Isoprene ; hydroxyl radical ; isoprene ; nitric oxide ; oxidizing agent ; aerosol ; atmospheric chemistry ; comparative study ; data set ; hydroxyl radical ; instrumentation ; isoprene ; mass spectrometry ; measurement method ; nitrogen oxides ; oxidant ; reactive transport ; aerosol ; air pollution ; analytic method ; Article ; chemical reaction ; clinical assessment ; controlled study ; environmental impact ; exhaust gas ; fluorescence analysis ; forest ; human ; intermethod comparison ; laser induced fluorescence ; mass spectrometry ; measurement accuracy ; oak ; oxidation kinetics ; photochemistry ; priority journal ; United States
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: We intercompare OH and OH reactivity datasets from two different techniques, chemical ionization mass spectrometry (CIMS) and laser-induced fluorescence (LIF) in a high isoprene and low NO environment in a southeastern US forest during the Southern Oxidant and Aerosol Study (SOAS). An LIF instrument measured OH and OH reactivity at the top of a tower, a CIMS instrument measured OH at the top of the tower, and a CIMS based comparative reactivity method (CRM-CIMS) instrument deployed at the base of the tower measured OH reactivity. Averaged diel variations of OH and OH reactivity from these datasets agree within analytical uncertainty and correlations of LIF versus CIMS for OH and OH reactivity have slopes of 0.65 and 0.97, respectively. However, there are systematic differences between the measurement datasets. The CRM-CIMS measurements of OH reactivity were ∼16% lower than those by the LIF technique in the late afternoon. We speculate that it is caused by losses in the sampling line down to the CRM-CIMS instrument. On the other hand, we could not come up with a reasonable explanation for the difference in the LIF and CIMS OH datasets for early morning and late afternoon when OH is below 1 × 106 molecules cm−3. Nonetheless, results of this intercomparison exercise strengthen previous publications from the field site on OH concentrations and atmospheric reactivity. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83070
Appears in Collections:气候变化事实与影响

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作者单位: Department of Earth System Science, University of California, Irvine, Irvine, CA, United States; National Institute for Environmental Research, Incheon, South Korea; Department of Meteorology and Atmospheric Science, Pennsylvania State University, University Park, PA, United States; Chemical Science Division, NOAA Earth System Research Laboratory, Boulder, CO, United States; Department of Environmental Science, Policy and Management, University of California, Berkeley, Berkeley, CA, United States; University of North Carolina, Gillings School of Global Public Health, Chapel Hill, NC, United States; Divisions of Engineering and Applied Science and Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Paulson School of Engineering and Applied Sciences and Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, United States

Recommended Citation:
Sanchez D,, Jeong D,, Seco R,et al. Intercomparison of OH and OH reactivity measurements in a high isoprene and low NO environment during the Southern Oxidant and Aerosol Study (SOAS)[J]. Atmospheric Environment,2018-01-01,174
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