Influence of meteorological conditions and particulate matter on visual range impairment in Jinan, China

To understand the influence of aerosol particles and meteorological conditions on visual range in Jinan, the capital of Shandong Province, China, PM 2.5 and PM 10 samples were collected from November 2004 to September 2005. The mass concentrations of PM 2.5 and PM 10, concentrations of water-soluble...

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Bibliographic Details
Published in:The Science of the total environment 2007-09, Vol.383 (1), p.164-173
Main Authors: Yang, Ling-xiao, Wang, Dong-cheng, Cheng, Shu-hui, Wang, Zhe, Zhou, Yang, Zhou, Xue-hua, Wang, Wen-xing
Format: Article
Language:English
Subjects:
Air Pollutants - analysis
Applied sciences
Atmospheric pollution
Carbon - analysis
China
Environmental Monitoring
Exact sciences and technology
Humidity
Jinan
Meteorological factors
Nitrates - analysis
Particle Size
Particulate Matter - analysis
PM 10
PM 2.5
Pollutants physicochemistry study: properties, effects, reactions, transport and distribution
Pollution
Quaternary Ammonium Compounds - analysis
Sulfates - analysis
Temperature
Vision, Ocular
Visual range
Wind
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Summary:To understand the influence of aerosol particles and meteorological conditions on visual range in Jinan, the capital of Shandong Province, China, PM 2.5 and PM 10 samples were collected from November 2004 to September 2005. The mass concentrations of PM 2.5 and PM 10, concentrations of water-soluble ions in PM 2.5 and concentrations of black carbon (BC) in the atmosphere were analyzed. The decrease of visual range in Jinan results from the combined influence of PM 2.5, PM 10 and meteorological conditions. For the period studied, the average light extinction coefficient, b ext, which was estimated from an equation developed by the IMPROVE network was 292 Mm − 1 . Ammonium sulfate was the major contributor to visual range impairment, accounting for 41%, while ammonium nitrate, particulate organic matter (POM) and BC made comparable contributions accounting for 20%, 22% and 18%, respectively. This highlights the significance of secondary particles ((NH 4) 2SO 4, NH 4NO 3, POM) in visual range impairment in Jinan. The data from this study are also compared with the long-term variations of visual range in Jinan from 1961 to 2005.
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2007.04.042