EFFECTS OF DUSTSTORMS ON THE AIR POLLUTION IN BEIJING


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Abstract

The objective of this study was to investigate the air pollution in Beijing before, during, and after duststorms occur. There are two different phenomena of air pollution in Beijing during a duststorm; one being related to the concentration of particulate matter and the second related to gaseous chemical pollutant concentrations. In this study, the concentrations of the chemical pollutants, such as SO2, NOx and CO, were high prior to the occurrence of the duststorms. At the beginning of the two duststorms studied, the air quality related to these chemical constituents was improved due to a strong wind blowing away the chemical pollutants, which caused a decrease in the concentrations of SO2, CO and NOx. During the duststorm, the concentration of particulate matter, quantified by PM10, was observed to increase and the atmospheric visibility decreased.

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