Origin and distribution of trace elements in the campus dust of Xi'an, China. Issue 1 (7th February 2019)

• Record Type: Journal Article
• Authors: Chen, Hao; Lu, Xinwei
• Is Part Of: Toxicological and environmental chemistry. Volume 101:Issue 1/2(2019)
• Page Start: 75
• Page End: 90
• Publication Date: 2019-02-07
• Subjects: Trace elements -- dust -- quantitative analysis -- MULTISPATI-PCA -- multiple linear regression; Toxicology -- Periodicals; Environmental chemistry -- Periodicals; 571.95
• DOI: 10.1080/02772248.2019.1621312
• Languages: English
• ISSNs: 0277-2248

Abstract

Abstract: The concentrations of As, Ba, Co, Cr, Cu, Mn, Ni, Pb, V, and Zn in dust samples from kindergartens, primary schools, secondary schools, and universities in Xi'an City have been determined by X-ray fluorescence spectrometry. The element concentrations in dust samples collected from the campuses were higher than background levels, in particular for Pb, Zn, Cr, Cu, Co, and Ba. Summary statistics and enrichment factors allowed for the differentiation between contributions from local soil and from anthropogenic sources. The results of a multivariate spatial correlation-principal component analysis demonstrated that metal concentrations could be related to natural and anthropogenic sources separately and in combination. Source apportionment based on multiple linear regression indicated that 67% of the trace elements could be ascribed to natural and traffic sources, 13% to industrial sources, 19% to construction activities, and an additional 1% to traffic and industrial sources.