Please use this identifier to cite or link to this item:
Title: Concentrations and solubility of trace elements in fine particles at a mountain site, southern China: Regional sources and cloud processing
Authors: Li, T
Wang, Y
Li, WJ
Chen, JM
Wang, T 
Wang, WX
Issue Date: 2015
Publisher: Copernicus GmbH
Source: Atmospheric chemistry and physics, 2015, v. 15, no. 15, p. 8987-9002 How to cite?
Journal: Atmospheric chemistry and physics 
Abstract: The concentrations and solubility of twelve trace elements in PM2.5 at Mt. Lushan, southern China, were investigated during the summer of 2011 and the spring of 2012. The average PM2.5 mass was 55.2 ± 20.1 μg m-3 during the observation period. Temporal variations of all trace elements including total and water-soluble fractions with several dust storm spikes in total fractions of Al and Fe were observed. The enrichment factor (EF) values were 1 order of magnitude higher for the water-soluble fractions versus the total fractions of trace elements. Four major emission sources, namely nonferrous metal mining and smelting (for Cr, As, Ba and parts of Zn), coal combustion (for Pb, Zn, Se, Cu and Mn), crustal materials (for Al and Fe) and municipal solid waste incineration (for Cd and Mo), were classified by principal component analysis (PCA). Trajectory cluster analysis and the potential source contribution function (PSCF) consistently identified the Yangtze River delta (YRD), the Pearl River delta (PRD), and the neighbouring provinces of Mt. Lushan as the major source regions and transport pathways for anthropogenic elements. Northern China was identified as a major source region for crustal elements. It should be noted that apart from the YRD, the area around Mt. Lushan has become the most significant contributor to the solubility of most trace elements. Element solubility can be partially determined by emission sources. However, enhanced solubility of trace elements corresponding to increased concentrations of sulfate after the occurrence of cloud events indicated significant effects of cloud processing on aerosol element dissolution. Metal particles mixed with sulfate in cloud droplet residues were further investigated through transmission electron microscopy (TEM) analysis. Irreversible alteration of particle morphology by cloud processing was confirmed to be highly responsible for the enhancement of trace element solubility. The findings from this study imply an important role of regional anthropogenic pollution and cloud processing in the evolution of aerosol trace element solubility during transport in the troposphere.
ISSN: 1680-7316
EISSN: 1680-7324
DOI: 10.5194/acp-15-8987-2015
Rights: © Author(s) 2015. This is an open access article distributed under the Creative Commons Attribution 3.0 License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The following publication: Li, T., Wang, Y., Li, W. J., Chen, J. M., Wang, T., and Wang, W. X.: Concentrations and solubility of trace elements in fine particles at a mountain site, southern China: regional sources and cloud processing, Atmos. Chem. Phys., 15, 8987-9002 is available at, 2015.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Li_Concentrations_solubility_trace.pdf8.41 MBAdobe PDFView/Open
View full-text via PolyU eLinks SFX Query
Show full item record
PIRA download icon_1.1View/Download Contents


Last Week
Last month
Citations as of Nov 27, 2018


Last Week
Last month
Citations as of Dec 3, 2018

Page view(s)

Last Week
Last month
Citations as of Dec 10, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.