期刊
ATMOSPHERIC ENVIRONMENT
卷 40, 期 -, 页码 S378-S395出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2006.02.038
关键词
source apportionment; traffic sources; diesel engine exhaust; particles; air pollution
资金
- NIEHS NIH HHS [R01 ES011170, R01 ES011170-04] Funding Source: Medline
- NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES [R01ES011170] Funding Source: NIH RePORTER
The Cincinnati Childhood Allergy and Air Pollution Study (CCAAPS) is underway to determine if infants who are exposed to diesel engine exhaust particles are at an increased risk for atopy and atopic respiratory disorders, and to determine if this effect is magnified in a genetically at risk population. In support of this study, a methodology has been developed to allocate local traffic source contributions to ambient PM2.5 in the Cincinnati airshed. As a first step towards this allocation, UNMIX was used to generate factors for ambient PM2.5 at two sites near at interstate highway. Procedures adopted to collect, analyze and prepare the data sets to run UNMIX are described. The factors attributed to traffic sources were similar for the two sites. These factors were also similar to locally measured truck engine-exhaust enriched ambient profiles. The temporal variation of the factors was analyzed with clear differences observed between factors attributed to traffic sources and combustion-related regional secondary sources. (c) 2006 Published by Elsevier Ltd.
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