UNMIX modeling of ambient PM2.5 near an interstate highway in Cincinnati, OH, USA
UNMIX modeling of ambient PM2.5 near an interstate highway in Cincinnati, OH, USA
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DOI：
10.1016/j.atmosenv.2006.02.038
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发表时间：
2006-01-01
影响因子：
5
通讯作者：
LeMasters, Grace
中科院分区：
文献类型：
--
作者：
Hu, Shaohua;McDonald, Rafael;LeMasters, Grace
“辛辛那提儿童过敏和空气污染研究（CCAAPS）”正在进行中，以确定接触柴油发动机废气颗粒的婴儿是否会增加患特应性和特应性呼吸系统疾病的风险，并确定这种影响是否在遗传风险人群中放大。为了支持这项研究，我们开发了一种方法来分配辛辛那提空域中当地交通源对环境 PM2.5 的贡献。作为实现这一分配的第一步，UNMIX 用于生成州际高速公路附近两个地点的环境 PM2.5 因子。描述了收集、分析和准备运行 UNMIX 的数据集所采用的程序。这两个网站的流量来源因素相似。这些因素也与当地测量的卡车发动机排气富集环境概况类似。对这些因素的时间变化进行了分析，发现交通来源和与燃烧相关的区域二次来源的因素之间存在明显差异。 (c) 2006 年，爱思唯尔有限公司出版。
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.