globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2017.07.025
Scopus记录号: 2-s2.0-85025137992
论文题名:
Constraints on primary and secondary particulate carbon sources using chemical tracer and 14C methods during CalNex-Bakersfield
作者: Sheesley R; J; , Nallathamby P; D; , Surratt J; D; , Lee A; , Lewandowski M; , Offenberg J; H; , Jaoui M; , Kleindienst T; E
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 166
起始页码: 204
结束页码: 214
语种: 英语
英文关键词: CalNex ; Chemical mass balance ; Primary organic aerosol ; Radiocarbon ; Secondary organic aerosol
Scopus关键词: Aerosols ; Carbon ; Chemical analysis ; Chromatography ; Gas chromatography ; Mass spectrometry ; Naphthalene ; CalNex ; Chemical mass balance ; Organic aerosol ; Radiocarbon ; Secondary organic aerosols ; Organic carbon ; carbon ; carbon 14 ; fossil fuel ; isoprene ; lubricating agent ; naphthalene ; organic carbon ; pinene ; toluene ; tracer ; aerosol ; carbon isotope ; chemical analysis ; chemical mass balance ; organic carbon ; particulate matter ; radiocarbon dating ; research program ; sampling ; source apportionment ; total organic carbon ; tracer ; aerosol ; air filter ; air sampling ; ambient air ; Article ; atmosphere ; biomass ; carbon balance ; carbon source ; chemical analysis ; detritus ; exhaust gas ; fossil ; fractionation ; limit of detection ; mass fragmentography ; measurement ; molecular weight ; motor vehicle ; particulate matter ; primary organic aerosol ; priority journal ; secondary organic aerosol ; total organic carbon ; United States ; vegetation ; Bakersfield ; California ; 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: The present study investigates primary and secondary sources of organic carbon for Bakersfield, CA, USA as part of the 2010 CalNex study. The method used here involves integrated sampling that is designed to allow for detailed and specific chemical analysis of particulate matter (PM) in the Bakersfield airshed. To achieve this objective, filter samples were taken during thirty-four 23-hr periods between 19 May and 26 June 2010 and analyzed for organic tracers by gas chromatography – mass spectrometry (GC-MS). Contributions to organic carbon (OC) were determined by two organic tracer-based techniques: primary OC by chemical mass balance and secondary OC by a mass fraction method. Radiocarbon (14C) measurements of the total organic carbon were also made to determine the split between the modern and fossil carbon and thereby constrain unknown sources of OC not accounted for by either tracer-based attribution technique. From the analysis, OC contributions from four primary sources and four secondary sources were determined, which comprised three sources of modern carbon and five sources of fossil carbon. The major primary sources of OC were from vegetative detritus (9.8%), diesel (2.3%), gasoline (<1.0%), and lubricating oil impacted motor vehicle exhaust (30%); measured secondary sources resulted from isoprene (1.5%), α-pinene (<1.0%), toluene (<1.0%), and naphthalene (<1.0%, as an upper limit) contributions. The average observed organic carbon (OC) was 6.42 ± 2.33 μgC m−3. The 14C derived apportionment indicated that modern and fossil components were nearly equivalent on average; however, the fossil contribution ranged from 32 to 66% over the five week campaign. With the fossil primary and secondary sources aggregated, only 25% of the fossil organic carbon could not be attributed. Whereas, nearly 80% of the modern carbon could not be attributed to primary and secondary sources accessible to this analysis, which included tracers of biomass burning, vegetative detritus and secondary biogenic carbon. The results of the current study contributes source-based evaluation of the carbonaceous aerosol at CalNex Bakersfield. © 2017 Elsevier Ltd
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82444
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Department of Environmental Science, Baylor University, Waco, TX, United States; Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, United States; U.S. Environmental Protection Agency, Region 9, San Francisco, CA, United States; National Exposure Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC, United States

Recommended Citation:
Sheesley R,J,, Nallathamby P,et al. Constraints on primary and secondary particulate carbon sources using chemical tracer and 14C methods during CalNex-Bakersfield[J]. Atmospheric Environment,2017-01-01,166
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Sheesley R]'s Articles
[J]'s Articles
[, Nallathamby P]'s Articles
百度学术
Similar articles in Baidu Scholar
[Sheesley R]'s Articles
[J]'s Articles
[, Nallathamby P]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Sheesley R]‘s Articles
[J]‘s Articles
[, Nallathamby P]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.