The Characteristics of Atmospheric Particulate Matter

Objective To compare the characteristics of atmospheric particulate matter from different source. Methods The samples of particulate matter were collected using a medium-volume sampler.After sampling,the average mass concentration and size distribution of particulate matter were analyzed during dust storm and non-dust storm.The concentration of B(a)P was analyzed by high performance liquid chromatography.The concentration of Pb was analyzed by atomic absorption spectrometry. Results The average mass concentration of PM10 for Taiyuan and Beijing city were 0.401 mg/m 3 and 0.226 mg/m 3,respectively.The average mass concentration of TSP for Taiyuan and Beijing city were 0.551 mg/m 3 and 0.381 mg/m 3,respectively.Those values were more than 0.15 mg/m 3 and 0.30 mg/m 3,respectively,which China EPA enacted in air quality standards of PM10 and TSP.The average mass concentration of PM2.5 for Taiyuan and Beijing city were 0.275 mg/m 3 and 0.169 mg/m 3,respectively.Those values were more than 0.065 mg/m 3,which US EPA enacted in air quality standards of fine particles.The average mass concentration of PM2.5 for Beijing both dust storm and non-dust storm were 0.373 mg/m 3 and 0.165mg/m 3,respectilely.The averaye concentration of B(a)P were 1.38 ng/m 3 and 7.7 ng/m 3,respectively. Conclusions The air pollution of particulate matter in Taiyuan and Beijing city is very heavy,especially during dust storms.