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Evaluation of the Oxidation Flow Reactor for particulate matter emission limit certification
Cao, Junji1,2; Wang, Qiyuan1,2; Li, Li1; Zhang, Yue3; Tian, Jie1,2; Chen, L. W. Antony4; Ho, Steven Sai Hang5,6; Wang, Xiaoliang6; Chow, Judith C.1,6; Watson, John G.1,6
Corresponding AuthorCao, Junji(jjcao@ieecas.cn)
2020-03-01
Source PublicationATMOSPHERIC ENVIRONMENT
ISSN1352-2310
Volume224Pages:10
AbstractAs secondary aerosols become larger fractions of ambient PM2.5, emission factors and source profiles need to reflect the photochemical aging of multipollutant emissions that account for changes in transport between source and receptor. Oxidation Flow Reactors (OFR) intend to simulate gas/particle transformation and volatilization with time-scales of hours to days in order to estimate mass gains or losses due to atmospheric aging. The commercially-available Potential Aerosol Mass (PAM)-OFR (Aerodyne Research, LLC, Billerica, MA, USA) is evaluated for its feasibility in establishing an emission limit certification protocol for China and for determining changes to source marker abundances used in source apportionment model applications. The OFR without ultraviolet radiation is reasonably inert to the passage of reactive gases, such as sulfur dioxide (SO2), and particles >similar to 100 nm. The largest uncertainty in estimating aging times is the commonly used assumption that the average atmospheric hydroxyl concentration (OHatm) is 1.5 x 10(6) molecules/cm(3); measurements show that OHatm can vary by an order of magnitude in different environments. OH exposures (OFE,) estimated within the OFR are more precise than this assumption. Plug flow is a reasonable estimate of residence time within the OFR, as it does not differ much from the weighted-mean of the residence time distribution. A survey of previous studies shows that only a few examine the PAM-OFR performance, and that mass is both gained and lost with aging, depending on the combustion fuels, burning conditions, and aging times. At present, the OFR appears to be more practical for source profile aging than for emission certification, and further experiments are needed prior to application for multipollutant effects on particulate emission rates.
KeywordSource characterization Aerosol aging Multipollutant Emission factors Hydroxyl exposure
DOI10.1016/j.atmosenv.2019.117086
WOS KeywordSECONDARY ORGANIC AEROSOL ; HETEROGENEOUS OXIDATION ; SOURCE APPORTIONMENT ; PARTICLE EMISSIONS ; HYDROXYL RADICALS ; OH REACTIVITY ; BLACK CARBON ; MASS ; PHOTOOXIDATION ; CHEMISTRY
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Science Foundation (NSF)[AGS1464501] ; Desert Research Institute, Reno, NV, USA ; National Atmospheric Research Program[2017YFC0212200] ; National Research Program for Key Issues in Air Pollution Control in China[DQGG0105]
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
Funding OrganizationNational Science Foundation (NSF) ; Desert Research Institute, Reno, NV, USA ; National Atmospheric Research Program ; National Research Program for Key Issues in Air Pollution Control in China
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000525865300001
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/12595
Collection粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorCao, Junji
Affiliation1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
4.Univ Nevada, Dept Environm & Occupat Hlth, Las Vegas, NV 89154 USA
5.Hong Kong Premium Serv & Res Lab, Hong Kong, Peoples R China
6.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA
Recommended Citation
GB/T 7714
Cao, Junji,Wang, Qiyuan,Li, Li,et al. Evaluation of the Oxidation Flow Reactor for particulate matter emission limit certification[J]. ATMOSPHERIC ENVIRONMENT,2020,224:10.
APA Cao, Junji.,Wang, Qiyuan.,Li, Li.,Zhang, Yue.,Tian, Jie.,...&Watson, John G..(2020).Evaluation of the Oxidation Flow Reactor for particulate matter emission limit certification.ATMOSPHERIC ENVIRONMENT,224,10.
MLA Cao, Junji,et al."Evaluation of the Oxidation Flow Reactor for particulate matter emission limit certification".ATMOSPHERIC ENVIRONMENT 224(2020):10.
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