태백지역 석탄광업 굴진부서의 부유분진 농도

Suspended Particulate Concentration at the Drilling Site of Underground Coal Mines in Taebaek Area

Airborne suspended particulate concentration in dri1ling sites of underground coal mines in Taebaek area was evaluated. And respirable coal dust exposure level was evaluated. Airborne sus pended particulate mass inc1ude total suspended partic1e (TSP) and thoracic partic1e (TPM). TSP(by open-face filter holder) and TPM(by elutriator) concentration were determined by low volume air samplers. Personal air samplers were attached to the coal workers inc1uding drillers, coal cutters, and their assistants. Normality and log-normality of TSP, TPM, and respirable dust(RPM) concentration were tested by Kolmogorov-Smirnov one-sample test. Differences of means of TSP, TPM, and RPM concentration were tested by paired t-test. Relation between TSP, TPM, and RPM with pairs were tested by regression test and Pearson’s correlation,