Pollution Characteristics Analysis Of Atmospheric Particulate Matter In Harbin

In recent years, with the rapid development of China's economy and urbanization, increasing air pollution problems have aroused a wide range of public attention. Harbin, the capital of Heilongjiang Province, has already implemented the newly revised "Ambient Air Quality Standards"(GB3095-2012) on 1st January, 2013 with PM2.5, PM10 monitoring results published per hour.The research is based on data provided by automatic air monitoring stations to analyze the seasonal and regional differences of airborne part iculate matter PM2.5, PM10 and PM2.5 correlation between PM10, SO2, NO2, O3, CO and temperature. The results show that: the particulate matter pollution in Harbin varies greatly from region to region and the degree of pollution is deeply related to season since the pollutant concentration is obviously higher in winter than that in summer. PM 2.5 is correlated with temperature and it's much more closely related to the concentration of NO2 and CO in winter compared with that in mild time. Moreover, PM2.5 and SO2 have no obvious correlation in summer, and PM2.5 almost have no correlation with O3. PM2.5 correlated with temperature.In this study, researchers choose Hongwei Parks, Heping Road and Xuefu Road to collect PM2.5 and PM10 samples and assay 16 kinds of PAHs of them. The results show that: the concentration of ?PAHs in PM2.5 and PM10 collected is 12.4 ~143ng/m3 and17.7~161ng/m3; The annual concentration average of Benzo(a)pyrene is 5.42ng/m3, Exceeding the national standards. For the of aromatic hydrocarbo ns, this study analyzes the distribution characteristics of ring PAHs in PM 2.5, PM10. Researchers find in case of carcinogenic toxicity, particulate matters enrich more carcinogenic polycyclic aromatic hydrocarbons is more easily to inhale. The spatial distribution of polycyclic aromatic hydrocarbons in PM 2.5 shows the characteristics that Daoli(Lingbei) < Nangang(Xuefu Road) ? Xiangfang(Heping Road) < Daowai(Hongwei Park), and for each monitoring point, the contamination is worse in summer than that in winter.This study qualitatively analyzed sources of PAHs in PM2.5 by ratio analysis, finding that PM2.5 pollution sources of PAHs in the spring and summer is given priority to traffic, in autumn it mainly comes from traffic and coal source, and in winter it is dominated by coal source. As a conclusion, by using chemical mass balance model(CMB) to quantitatively analyze the PM2.5 sources of polycyclic aromatic hydrocarbons, we can say that the main reason for causing polycyclic aromatic hydrocarbons pollution is the coal burning, the soot pollution accounting for a large proportion.