Abstract: The research and application progress on organic carbon/elemented carbon（OC/EC）analysis methods of atmospheric particulates were summarized. The influences of the grab way on determination results for membrane samples were analyzed，and the comparability on determination results of OC/EC/TC（total carbon，TC）with IMPROVE-A，NIOSH 5040 and Quartz method were studied. The results showed that there was no significant difference for the determination of total carbon （TC） among IMPROVE-A，NIOSH 5040 and Quartz method（ t_TC < t_0.05（2））. There was also no significant difference for the determination of OC/EC between NIOSH 5040 and Quartz method（ t_OC < t_0.05（2） ，t_EC < t_0.05（2））. However，IMPROVE-A and NIOSH 5040 method or Quartz method，there were significant differences for the determination of OC/EC（ t_OC > t_0.01（2），t_EC > t_0.01（2））. Since the OC/EC ratio is of great importance in source apportionment of particulates，and there is no standardized method for OC/EC determination， thus it′s very necessary to standardize the OC/EC analysis method for source apportionment.

Key words: fine particulate matter（PM_2.5）, organic carbon（OC）, elemental carbon（EC）, determination