Source identification of coarse particles in the Desert Southwest, USA using Positive Matrix Factorization

Atmospheric Pollution Research

Andrea L.Clements¹ 

关键词: Desert aerosols;    Coarse particles;    Positive matrix factorization;    Crustal material;    Feedlot;    Road dust;    Primary biological aerosol particles;   

DOI  :  10.1016/j.apr.2017.02.003

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

The Desert Southwest Coarse Particulate Matter Study was undertaken to further our understanding of the spatial and temporal variability and sources of fine and coarse particulate matter (PM) in rural, arid, desert environments. Sampling was conducted between February 2009 and February 2010 in Pinal County, AZ near the town of Casa Grande where PM concentrations routinely exceed the U.S. National Ambient Air Quality Standards (NAAQS) for both PM10 and PM2.5. In this desert region, exceedances of the PM10 NAAQS are dominated by high coarse particle concentrations, a common occurrence in this region of the United States. This work expands on previously published measurements of PM mass and chemistry by examining the sources of fine and coarse particles and the relative contribution of each to ambient PM mass concentrations using the Positive Matrix Factorization receptor model (Clements et al., 2014).

【 授权许可】

CC BY