Study on Concentration Characteristics of TSP, PM_(10) and PM_(2.5) in Harbin

摘要

In order to investigate the concentration characteristic of atmospheric particles, TSP, PM_(10) and PM_(2.5) were collected in July 2008 to June 2010. This study investigates the mass concentration of atmospheric particles in each month. The results show the three particle concentrations reached the lowest value in July, while the peak in January. Compared with the national secondary standard, TSP and PM_(10) were exceeded in January, February, March, April, November, and December and PM_(2.5) concentrations is above 2 to 8 times of the EU standard (15 μg/m~3). Fine particles (PM_(2.5)) and coarse particles (PM_(2.5-10)) are major component of atmospheric particles. The mass concentration of atmospheric particles on day is higher than at night in major months and lower in May and June. However, it is not obvious in July, August and September.