Abstract：Twelve PM10 samples were collected at coal spontaneous combustion zone in Datong, Ningwu and Hequ, Shanxi, and were analyzed for organic carbon (OC) and elemental carbon (EC) by Analysensysteme GmbH vario E1cube. Total carbon aerosol (TCA) contribution to PM10 and OC/EC ratio were discussed. The ranges of PM10, OC, EC concentration were114~401, 22.9~68.1, 21.9~70.7μg/m3, respectively. There were significant differences of pollution levels of PM10, OC and EC in different regions. The most serious PM10 pollution was at Hequ, while the highest level of carbonaceous particulate matter was at Ningwu. Average PM10 concentrations in outcrop coal spontaneous combustion zone was lower than in mined coal spontaneous combustion zone, however, the distribution of OC and EC was opposite. Total carbonaceous aerosol (TCA=OC×1.6+EC) accounted for 63.82% of the PM10 mass. TCA contribution to PM10 in outcrop coal spontaneous combustion zone was higher than in mined coal spontaneous combustion zone. OC/EC ranged from 0.7to 1.6, less than the ratio in other researchers￠studies, indicating secondary organic carbon (SOC) pollution was lighter.
