Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61015
Title: GIS-based multielement source analysis of dustfall in Beijing : a study of 40 major and trace elements
Authors: Luo, N
An, L
Nara, A
Yan, X
Zhao, W
Keywords: Backward-trajectory model
Dust
GIS
Trace elements
Issue Date: 2016
Publisher: Pergamon Press
Source: Chemosphere, 2016, v. 152, p. 123-131 How to cite?
Journal: Chemosphere 
Abstract: Dust, as an important carrier of inorganic and organic pollutants, daily exposes to human without any protection. It affects our health adversely, especially its chemical elements and ions. In this research, we investigated the chemical characteristics of dustfall in Beijing, specifically in terms of 40 major and trace elements, and presented semi-quantitative evaluations of the relative local and remote contributions. In total, 58 samples were collected in Beijing and nearby cities during 2013-2014 "the winter heating period". Using multiple statistical methods and GIS techniques, we obtained the relative similarities among certain elements and identified their pollution sources (from local or nearby cities). And more interestingly, the relative contributions of nearby cities can be calculated by the Hysplit4 backward-trajectory model. In addition, the correlation analysis for the 40 elements in dust and soil indicated that traffic restricted interchange between them; the city center, with the heaviest traffic, had the most significant influence. Finally, the resulting source apportionment was examined and modified using land use data and terrain information. We hope it can provide a strong basis for the environmental protection and risk assessment.
URI: http://hdl.handle.net/10397/61015
ISSN: 0045-6535
EISSN: 1879-1298
DOI: 10.1016/j.chemosphere.2016.02.099
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