Toward distinguishing woodsmoke and diesel exhaust in ambient particulate matter

被引：31

作者：

Braun, A. ^{[1
,2
,3
]}

Huggins, F. E. ^{[1
,2
]}

Kubatova, A. ^{[4
,5
]}

Wirick, S. ^{[6
,7
]}

Maricq, M. M. ^{[8
]}

Mun, B. S. ^{[9
,10
]}

McDonald, J. D. ^{[11
]}

Kelly, K. E. ^{[12
]}

Shah, N. ^{[1
,2
]}

Huffman, G. P. ^{[1
,2
]}

机构：

[1] Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40506 USA

[2] Univ Kentucky, CFFS, Lexington, KY 40506 USA

[3] Empa Swiss Fed Labs Mat Testing & Res, Lab High Performance Ceram, CH-8600 Dubendorf, Switzerland

[4] Univ N Dakota, Dept Chem, Grand Forks, ND 58202 USA

[5] Univ N Dakota, EERC, Grand Forks, ND 58202 USA

[6] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[7] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA

[8] Ford Motor Co, Res & Adv Engn, Dearborn, MI 48121 USA

[9] Ernest Orlando Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[10] Hanyang Univ, Dept Appl Phys, Ansan 426791, Kyunggi Do, South Korea

[11] Lovelace Resp Res Inst, Natl Environm Resp Ctr, Albuquerque, NM 87108 USA

[12] Univ Utah, Dept Chem & Fuels Engn, Salt Lake City, UT 84112 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2008年 / 42卷 / 02期

关键词：

D O I：

10.1021/es071260k

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Particulate matter (PM) from biomass burning and diesel exhaust has distinct X-ray spectroscopic, carbon specific signatures, which can be employed for source apportionment. Characterization of the functional groups of a wide selection of PM samples (woodsmoke, diesel soot, urban air PM) was carried out using the soft X-ray spectroscopy capabilities at the synchrotron radiation sources in Berkeley (ALS) and Brookhaven (NSLS). The spectra reveal that diesel exhaust particulate (DIP) matter is made up from a semigraphitic solid core and soluble organic matter, predominantly with carboxylic functional groups. Woodsmoke PM has no or a less prevalent, graphitic signature, instead it contains carbon-hydroxyl groups. Using these features to apportion the carbonaceous PM in ambient samples we estimate that the relative contribution of DEP to ambient PM in an urban area such as Lexington, KY and St. Louis, MO is 7% and 13.5%, respectively. These values are comparable to dispersion modeling data from nonurban and urban areas in California, and with elemental carbon measurements in urban locations such as Boston, MA, Rochester, NY, and Washington, DC.

引用

页码：374 / 380

页数：7

共 45 条

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