Properties Of Atmospheric Particulate Matter In Shijiazhuang

The city atmospheric environmental situation is very serious in China.The air quality of Shijiazhuang city is the severest in China.particulate matter(PM10)and fine particulate matter(PM2.5)are the main factors affecting Shijiazhuang's air quality.The heavy air pollution seriously restricts the sustainable development of social economy and threat the people's health in Shijiazhuang.To explore Shijiazhuang City air pollution sources,the temporal and spatial distribution of atmospheric pollutants diffusion and transport characteristics,improve the quality of atmospheric environment,and get scientifical and accurate air management rules,this paper analysis the factors of Shijiazhuang City,the particle distribution regular patterns of PM10 and PM2.5 and effects of climate parameters on the air pollutants in Shijiazhuang City were investigated.From January 1,2013 to October 30,2013,PM10 as primary pollutants days is 177 days,with PM2.5 as the primary pollutant is 101 days.PM10 and PM2.5 in Shijiazhuang 24 hours were continuously monitored,the average values were 304ug/m3 and 150ug/m3 respectively.On January 12,PM10 daily average concentration reached maximum and was 1001ug/m3,PM2.5 daily average concentration reached maximum and was 771ug/m3.Through the statistical analysis of various pollutants related laws,PM10 and PM2 5 have significant positive correlation.The positive correlations of PM1O and PM2.5 in winter is better that that of in spring and summer.From January to October,the PM2.5/PM10 is 0.493.PM10 and PM2.5 were asignificantly associated with CO.The reason is the three major pollutants sources of PM10,PM2.5 and CO mainly are from coal and motor vehicle exhaust.The effects of climate parameters on the air pollutants in Shijiazhuang City were analyzed.of the relationship between atmospheric particulate matter and the meteorological parameters,discovery of snow can comprehensive reduce content of pollutants in the air,stop the air pollution a sudden increase in the snow.Rain can reduce content of pollutants in the air,reduce the speed is slower than the PM10,PM2.5 index after the rain to stop air pollution aggravate gradually.Study the correlation between temperature and PM10 and PM2.5,the concentration of PM10 and PM2.5 change with temperature has significant correlation with the change of temperature,atmospheric humidity,illumination,and changes in wind speed and direction,air pressure,the concentration of PM10 and PM2.5 fluctuation is the result of the above meteorological factors work together.In addition to the man-made emissions factors,PM10 and PM2.5 concentrations fluctuate with various meteorological factors have close relations,temperature and humidity,air pressure,wind speed and direction,sunshine,rainfall and other factors affecting the pollutants and the concentration fluctuations,it is the influence of single factor.