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KMID : 0371019870200020261
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Journal of Preventive Medicine and Public Health
1987 Volume.20 No. 2 p.261 ~ p.269
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Quartz Concentration and Respirable Dust of Coal Mines in Taeback and Kangneung Areas
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최호춘/Choi HC
천용희/윤영노/김해정/Cheon YH/Yoon YN/Kim HJ
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Abstract
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In order to investigate working conditions of underground coal mines, this work was undertaken
to evaluate the respirable dust and the concentration of quartz in Taeback and Kangneung areas. The concentration of quartz was determined by Fourier Transform Infrared Spectrophotometry. The results were as follows;
1) The concentration of respirable dust of drilling and coal face in Taeback and Kangneung areas were as followed.
Arithmetic
Mean ± S.D. (mg/m3) Geometric Mean ± S.D. (mg/m3)
Taeback Drilling: 2.00 ± 1.56 1.34 ± 2.81
Coal"Face: 3.74 ± 3.14 2.55 -t 2.61
Kangneung Drilling: 4.55 ± 4.51 2.44 ± 3.63
Coal Face: 5.77 ± 4.53 4.24 ± 2.37
2) Distribution of respirable dust was well fitted to the log-normal distribution and geometric mean value was log-´ 0.37±log ´ 0.47 (2.34±2.95) mg/m3.
3) The difference of respirable dust concentrations in Taeback and Kangneung areas was not significant statistically (p>0.05).
4) The concentration of quartz of drilling and coal face in Taeback and Kangneung areas were as followed.
Arithmetic Mean ± S.D. (%) Geometric Mean ± S.D. (%)
Taeback Drilling: 6.18 ± 5.52 4.24 ± 2.59
Coal Face: 1.89 ± 1.54 1.39 ± 2.22
Kangneung Drilling: 3.54 ± 2.12 2.55 ± 3.08
Coal Face: 2.05 ± 3.37 1.24 ± 2.33
5) Distribution of quartz concentrations was well fitted to the log-normal distribution and geometric mean value was log-´ 0.33±log-´ 0.45 (2.14 ± 2.82)%.
6) The difference of quartz concentrations in Taeback and Kangneung areas was not significant (p>0.05), but significant at drilling sites and coal faces (p<0.05).
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