Seasonal Variations and Correlation Analysis of Water-Soluble Inorganic Ions in PM2.5 in Wuhan, 2013
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In this article, the average mass concentration of the eight ions was 40.96 µg/m3, which accounted for 62% of the entire mass concentration, and the order of the ion concentrations was SO42− > NO3− > NH4+ > Cl− > K+ > Ca2+ > Na+ > Mg2+.Abstract:
Daily PM2.5 and water-soluble inorganic ions (NH4+, SO42−, NO3−, Cl−, Ca2+, Na+, K+, Mg2+) were collected at the Hongshan Air Monitoring Station at the China University of Geosciences (Wuhan) (30°31′N, 114°23′E), Wuhan, from 1 January to 30 December 2013. A total of 52 effective PM2.5 samples were collected using medium flow membrane filter samplers, and the anionic and cationic ions were determined by ion chromatography and ICP, respectively. The results showed that the average mass concentration of the eight ions was 40.96 µg/m3, which accounted for 62% of the entire mass concentration. In addition, the order of the ion concentrations was SO42− > NO3− > NH4+ > Cl− >K+ > Ca2+ > Na+ > Mg2+. The secondary inorganic species SO42−, NO3− and NH4+ were the major components of water-soluble ions in PM2.5, with a concentration of 92% of the total ions of PM2.5, and the total concentrations of the three ions in the four seasons in descending order as follows: winter, spring, autumn, and summer. NH4+ had a significant correlation with SO42− and NO3−, and the highest correlation coefficients were 0.943 and 0.923 (in winter), while the minimum coefficients were 0.683 and 0.610 (in summer). The main particles were (NH4)2SO4 and NH4NO3 in PM2.5. The charge of the water-soluble ions was nearly balanced in PM2.5, and the pertinence coefficients of water-soluble anions and cations were more than 0.9. The highest pertinence coefficients were in the spring (0.9887), and the minimum was in summer (0.9459). That is, there were more complicated ions in PM2.5 in the summer. The mean value of NO3−/SO42− was 0.64, indicating that stationary sources of PM2.5 had a greater contribution in Wuhan.read more
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References
More filters
Journal ArticleDOI
Emissions of Metals Associated with Motor Vehicle Roadways
Glynis C. Lough,James J. Schauer,June-Soo Park,Martin M. Shafer,Jeffrey T Deminter,Jason P. Weinstein +5 more
TL;DR: Emissions of metals and other particle-phase species from on-road motor vehicles were measured in two tunnels in Milwaukee, WI during the summer of 2000 and winter of 2001 and correlations between these elements in PM2.5 indicate that direct brake wear emissions are also important.
Journal ArticleDOI
Chemical characterisation of PM2.5, PM10 and coarse particles at urban, near-city and rural sites in Switzerland
TL;DR: In this article, the authors focus on the variation of element concentration between different site types and on the chemical mass closure of atmospheric particulate matter and obtain emission sources of trace elements by evaluation of the element abundances at sites that represent different pollution levels.
Journal ArticleDOI
Estimating the National Public Health Burden Associated with Exposure to Ambient PM2.5 and Ozone
TL;DR: In this article, the authors use the photochemical Community Multiscale Air Quality (CMAQ) model in conjunction with ambient monitored data to create fused surfaces of summer season average 8-hour ozone and annual mean PM2.5 levels at a 12 km grid resolution.
Journal ArticleDOI
Relationships among aerosol constituents from Asia and the North Pacific during PEM-West A
Richard Arimoto,Robert A. Duce,Dennis L. Savoie,Joseph M. Prospero,Robert W. Talbot,J. D. Cullen,U. Tomza,N. F. Lewis,B. J. Ray +8 more
TL;DR: Aerosol particle samples collected from Asia and the North Pacific were analyzed to investigate the relationships among atmospheric sea salt, mineral aerosol, biogenic emissions (methanesulfonate (MSA)), and several anthropogenic substances (sulfate, nitrate, and various trace elements).
Journal ArticleDOI
The ion chemistry；seasonal cycle；and sources of PM2.5 and TSP aerosol in Shanghai
Ying Wang,Ying Wang,Guoshun Zhuang,Xingying Zhang,Xingying Zhang,Kan Huang,Chang Xu,Aohan Tang,Aohan Tang,Jianmin Chen,Zhisheng An +10 more
TL;DR: In this paper, the authors measured suspended particulate (TSP) and PM 2.5 aerosol samples at two sites in Shanghai in four seasons from September 2003 to January 2005.