GSTDTAP  > 地球科学
DOI10.5194/acp-18-15601-2018
Source apportionment of fine particulate matter in Houston, Texas: insights to secondary organic aerosols
Al-Naiema, Ibrahim M.1; Hettiyadura, Anusha P. S.1; Wallace, Henry W.2; Sanchez, Nancy P.2; Madler, Carter J.1; Cevik, Basak Karakurt2,3; Bui, Alexander A. T.2; Kettler, Josh1; Griffin, Robert J.2,4; Stone, Elizabeth A.5
2018-10-30
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2018
卷号18期号:21页码:15601-15622
文章类型Article
语种英语
国家USA; Turkey
英文摘要

Online and offline measurements of ambient particulate matter (PM) near the urban and industrial Houston Ship Channel in Houston, Texas, USA, during May 2015 were utilized to characterize its chemical composition and to evaluate the relative contributions of primary, secondary, biogenic, and anthropogenic sources. Aerosol mass spectrometry (AMS) on nonrefractory PM1 (PM <= 1 mu m) indicated major contributions from sulfate (averaging 50% by mass), organic aerosol (OA, 40 %), and ammonium (14 %). Positive matrix factorization (PMF) of AMS data categorized OA on average as 22% hydrocarbon-like organic aerosol (HOA), 29% cooking-influenced less-oxidized oxygenated organic aerosol (CI-LO-OOA), and 48% more-oxidized oxygenated organic aerosol (MO-OOA), with the latter two sources indicative of secondary organic aerosol (SOA). Chemical analysis of PM2.5 (PM <= 2.5 mu m) filter samples agreed that organic matter (35 %) and sulfate (21 %) were the most abundant components. Organic speciation of PM2.5 organic carbon (OC) focused on molecular markers of primary sources and SOA tracers derived from biogenic and anthropogenic volatile organic compounds (VOCs). The sources of PM2.5 OC were estimated using molecular marker-based positive matric factorization (MM-PMF) and chemical mass balance (CMB) models. MM-PMF resolved nine factors that were identified as diesel engines (11.5 %), gasoline engines (24.3 %), nontailpipe vehicle emissions (11.1 %), ship emissions (2.2 %), cooking (1.0 %), biomass burning (BB, 10.6 %), isoprene SOA (11.0 %), high-NOx anthropogenic SOA (6.6 %), and low-NO x anthropogenic SOA (21.7 %). Using available source profiles, CMB apportioned 41% of OC to primary fossil sources (gasoline engines, diesel engines, and ship emissions), 5% to BB, 15% to SOA (including 7.4% biogenic and 7.6% anthropogenic), and 39% to other sources that were not included in the model and are expected to be secondary.


This study presents the first application of in situ AMS-PMF, MM-PMF, and CMB for OC source apportionment and the integration of these methods to evaluate the relative roles of biogenic, anthropogenic, and BB-SOA. The three source apportionment models agreed that similar to 50% of OC is associated with primary emissions from fossil fuel use, particularly motor vehicles. Differences among the models reflect their ability to resolve sources based upon the input chemical measurements, with molecular marker-based methods providing greater source specificity and resolution for minor sources. By combining results from MM-PMF and CMB, BB was estimated to contribute 11% of OC, with 5% primary emissions and 6% BB-SOA. SOA was dominantly anthropogenic (28 %) rather than biogenic (11 %) or BB-derived. The threemodel approach demonstrates significant contributions of anthropogenic SOA to fine PM. More broadly, the findings and methodologies presented herein can be used to advance local and regional understanding of anthropogenic contributions to SOA.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000448701900005
WOS关键词POSITIVE MATRIX FACTORIZATION ; 2013 SOUTHERN OXIDANT ; PEARL RIVER DELTA ; HIGH-RESOLUTION ; AROMATIC-HYDROCARBONS ; MASS-SPECTROMETRY ; AIR-POLLUTION ; ANTHROPOGENIC EMISSIONS ; CHEMICAL-COMPOSITION ; SUBMICRON AEROSOLS
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/30670
专题地球科学
作者单位1.Univ Iowa, Dept Chem, Iowa City, IA 52242 USA;
2.Rice Univ, Dept Civil & Environm Engn, Houston, TX 77005 USA;
3.Yalova Univ, Fac Engn, Dept Energy Syst Engn, TR-77100 Yalova, Turkey;
4.Rice Univ, Dept Chem & Biomol Engn, Houston, TX 77005 USA;
5.Univ Iowa, Dept Chem & Biochem Engn, Iowa City, IA 52242 USA
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Al-Naiema, Ibrahim M.,Hettiyadura, Anusha P. S.,Wallace, Henry W.,et al. Source apportionment of fine particulate matter in Houston, Texas: insights to secondary organic aerosols[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(21):15601-15622.
APA Al-Naiema, Ibrahim M..,Hettiyadura, Anusha P. S..,Wallace, Henry W..,Sanchez, Nancy P..,Madler, Carter J..,...&Stone, Elizabeth A..(2018).Source apportionment of fine particulate matter in Houston, Texas: insights to secondary organic aerosols.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(21),15601-15622.
MLA Al-Naiema, Ibrahim M.,et al."Source apportionment of fine particulate matter in Houston, Texas: insights to secondary organic aerosols".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.21(2018):15601-15622.
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