title: Atmospheric particle characterization, distribution, and deposition in Xi'an, Shaanxi Province, Central China.
abstract: Physical characterization and chemical analysis of settled dusts collected in Xi'an from November 2007 to December 2008 show that (1) dust deposition rates ranged from 14.6 to 350.4 g m(-2) yr(-1). The average deposition rate (76.7 g m(-2) yr(-1)) ranks the 11th out of 56 dust deposition rates observed throughout the world. The coal-burning power was the major particle source; (2) on average (except site 4), ∼10% of the settled dusts having size <2.6, ∼30% having size <10.5, and >70% having size <30 μm; (3) the concentrations for 20 out of 27 elements analyzed were upto 18 times higher than their soil background values in China. With such high deposition rates of dusts that contain elevated levels of toxic elements, actions should be taken to reduce emission and studies are needed to assess the potential impacts of settled particles on surface ecosystem, water resource, and human health in the area.
authors.affiliation: Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an, 710062, PR China.
authors.forename: Zongze
authors.initials: Z
authors.lastname: Cao
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Yang
authors.forename: Julia
authors.initials: J
authors.lastname: Lu
authors.forename: Chengxiao
authors.initials: C
authors.lastname: Zhang
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000032:analysis*; D002681:China; D004391:Dust / Q000032:analysis*; D010316:Particle Size
chemical_list: D000393:Air Pollutants; D004391:Dust