title: [Effect of impactor sampling on the ratio of respirable dust concentration to total dust concentration].
abstract: The aim of this study was to verify the change of the ratio of Respirable Dust Concentration (RDC) to Total Dust Concentration (TDC) taken by two-stage impactor sampling. The results showed that there was a correlation between the ratio of RDC/TDC and TDC (correlation coefficient was 0.8576, 0.8689, 0.8736 and 0.9674, respectively) under the condition of identical sampling volume, and the ratio increases along with the elevated TDC.
authors.affiliation: Hygienic and Anti-epidemic Central Station, Third Railway Enginering Bureau, Taiyuan 030006, China.
authors.forename: G
authors.initials: G
authors.lastname: Liu
authors.forename: W
authors.initials: W
authors.lastname: Guo
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis*; D004391:Dust / Q000032:analysis*; D006801:Humans; D010316:Particle Size; D018401:Sample Size; D013048:Specimen Handling / Q000379:methods
chemical_list: D000395:Air Pollutants, Occupational; D004391:Dust