Correlation Analysis of PM2.5 and NO2 Concentrations in City Ambient Air of Changsha

Chun Hao Dai; Yue Ping Luo; Si Luo; Pu Feng Qin; Hui Peng

doi:10.4028/www.scientific.net/AMR.998-999.1414

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 998-999Correlation Analysis of PM2.5 and NO2...

Correlation Analysis of PM_2.5 and NO₂ Concentrations in City Ambient Air of Changsha

Abstract:

The Changsha city of Hunan province was selected as study area to monitor the concentrations of PM_2.5 and NO₂ in ambient air automatically. The correlation relationship between PM_2.5 and NO₂ was also analyzed. Results showed that the concentrations of PM_2.5 and NO₂ changed significantly with seasons, and they manifested the same change trend, as winter > autumn > spring > concentration in summer. In a day, the lowest concentration of NO₂ generally appeared in the afternoon. However, the present time of lowest and the peak values of PM_2.5 concentration were uncertain. The highest concentration of NO₂ was in the business district, and the distribution of PM_2.5 concentration did not have an obviously regional. Furthermore, the PM_2.5 and NO₂concentration changed in positive correlation, and these two were easy to produce pollution overlay. On the whole, the main seasons to control PM_2.5 and NO₂ were winter and autumn.

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Advanced Materials Research (Volumes 998-999)

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1414-1418

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https://doi.org/10.4028/www.scientific.net/AMR.998-999.1414

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Online since:

July 2014

Authors:

Chun Hao Dai*, Yue Ping Luo, Si Luo, Pu Feng Qin, Hui Peng

Keywords:

City Air Quality, Correlation Analysis, No₂, PM_2.5

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