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Changes in PM2.5 peat combustion source profiles with atmospheric aging in an oxidation flow reactor
Chow, Judith C.1,2; Cao, Junji2,3; Chen, L. -W. Antony4; Wang, Xiaoliang1; Wang, Qiyuan2,3; Tian, Jie2,3; Sai, Steven; Ho, Hang1,5; Watts, Adam C.1; Carlson, Tessa B.1; Kohl, Steven D.1; Watson, John G.1,2
Corresponding AuthorChow, Judith C.(judith.chow@dri.edu)
2019-10-17
Source PublicationATMOSPHERIC MEASUREMENT TECHNIQUES
ISSN1867-1381
Volume12Issue:10Pages:5475-5501
AbstractSmoke from laboratory chamber burning of peat fuels from Russia, Siberia, the USA (Alaska and Florida), and Malaysia representing boreal, temperate, subtropical, and tropical regions was sampled before and after passing through a potential-aerosol-mass oxidation flow reactor (PAM-OFR) to simulate intermediately aged (similar to 2 d) and well-aged (similar to 7 d) source profiles. Species abundances in PM2.5 between aged and fresh profiles varied by several orders of magnitude with two distinguishable clusters, centered around 0.1% for reactive and ionic species and centered around 10% for carbon. Organic carbon (OC) accounted for 58%-85% of PM2.5 mass in fresh profiles with low elemental carbon (EC) abundances (0.67%-4.4%). OC abundances decreased by 20%-33% for well-aged profiles, with reductions of 3%-14% for the volatile OC fractions (e.g., OC1 and OC2, thermally evolved at 140 and 280 degrees C). Ratios of organic matter (OM) to OC abundances increased by 12%-19% from intermediately aged to well-aged smoke. Ratios of ammonia (NH3) to PM2.5 decreased after intermediate aging. Well-aged NH4+ and NO3 abundances increased to 7%-8% of PM2.5 mass, associated with decreases in NH3, low-temperature OC, and levoglucosan abundances for Siberia, Alaska, and Everglades (Florida) peats. Elevated levoglucosan was found for Russian peats, accounting for 35%-39% and 20%-25% of PM2.5 mass for fresh and aged profiles, respectively. The water-soluble organic carbon (WSOC) fractions of PM2.5 were over 2-fold higher in fresh Russian peat (37.0 +/- 2.7%) than in Malaysian (14.6 +/- 0.9%) peat. While Russian peat OC emissions were largely water-soluble, Malaysian peat emissions were mostly water-insoluble, with WSOC / OC ratios of 0.59-0.71 and 0.18-0.40, respectively. This study shows significant differences between fresh and aged peat combustion profiles among the four biomes that can be used to establish speciated emission inventories for atmospheric modeling and receptor model source apportionment. A sufficient aging time (similar to 7 d) is needed to allow gasto-particle partitioning of semi-volatilized species, gas-phase oxidation, and particle volatilization to achieve representative source profiles for regional-scale source apportionment.
DOI10.5194/amt-12-5475-2019
WOS KeywordFINE PARTICULATE MATTER ; HETEROGENEOUS OXIDATION ; ORGANIC AEROSOL ; SOURCE APPORTIONMENT ; CHAMBER EXPERIMENTS ; CENTRAL KALIMANTAN ; RADICAL CHEMISTRY ; EMISSION FACTORS ; CARBON ; MASS
Indexed BySCI ; SCI
Language英语
Funding ProjectU.S. National Science Foundation[AGS1464501] ; U.S. National Science Foundation[CHE-1214163] ; National Science Foundation of China[21661132005]
WOS Research AreaMeteorology & Atmospheric Sciences
Funding OrganizationU.S. National Science Foundation ; National Science Foundation of China
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000491148000002
PublisherCOPERNICUS GESELLSCHAFT MBH
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/13293
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 AuthorChow, Judith C.
Affiliation1.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA
2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China
3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, 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
Recommended Citation
GB/T 7714
Chow, Judith C.,Cao, Junji,Chen, L. -W. Antony,et al. Changes in PM2.5 peat combustion source profiles with atmospheric aging in an oxidation flow reactor[J]. ATMOSPHERIC MEASUREMENT TECHNIQUES,2019,12(10):5475-5501.
APA Chow, Judith C..,Cao, Junji.,Chen, L. -W. Antony.,Wang, Xiaoliang.,Wang, Qiyuan.,...&Watson, John G..(2019).Changes in PM2.5 peat combustion source profiles with atmospheric aging in an oxidation flow reactor.ATMOSPHERIC MEASUREMENT TECHNIQUES,12(10),5475-5501.
MLA Chow, Judith C.,et al."Changes in PM2.5 peat combustion source profiles with atmospheric aging in an oxidation flow reactor".ATMOSPHERIC MEASUREMENT TECHNIQUES 12.10(2019):5475-5501.
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