지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 65 - 73 (9page)
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초록· 키워드
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Objectives: The purposes of this study are to investigate workers' exposures to respirable particles generated in taconite mines and to compare two metric methods for mass concentrations using direct-reading instruments. Methods: Air monitorings were conducted at six mines where subjects have been exposed primarily to particulate matters in crushing, concentrating, and pelletizing processes. Air samples were collected during 4 hours of the entire work shift for similarly exposure groups(SEGs) of nine jobs(N=37). Following instruments were employed to evaluate the workplace: a nanoparticle aerosol monitor(particle size range; 10-1000 nm, unit: ${\mu}m^2/cc$, Model 9000, TSI Inc.); DustTrak air monitors($PM_{10}$, $PM_{2.5}$, unit: $mg/m^3$, Model 8520, TSI Inc.); a condensation particle counter(size range; 20-1000 nm, unit: #/cc, P-Trak 8525, TSI Inc.); and an optical particle counter(particle number by size range $0.3-25{\mu}m$, unit: #/cc, Aerotrak 9306, TSI Inc.). Results: The highest airborne concentration among SEGs was for furnace operator followed by pelletizing maintenance workers in number of particle and surface area, but not in mass concentrations. The geometric means of $PM_{2.5}$ by the DustTrak and the Ptrak/Aerotrak were $0.04{\mu}m$(GSD 2.52) and $0.07{\mu}m$(GSD 2.60), respectively. Also, the geometric means of RPM by the DustTrak and the Ptrak/Aerotrak were $0.16{\mu}m$(GSD 2.24) and $0.32{\mu}m$(GSD 3.24), respectively. The Pearson correlation coefficient for DustTrak $PM_{2.5}$ and Ptrak/Aerotrak $PM_{2.5}$ was 0.56, and that of DustTrak RPM and Ptrak/Aerotrak RPM was 0.65, indicating a moderate positive association between the two sampling methods. Surface area and number concentration were highly correlated($R^2$ = 0.80), while $PM_{2.5}$ and RPM were also statistically correlated each other($R^2$ = 0.79). Conclusions: The results suggest that it is possible to measure airborne particulates by mass concentrations or particle number concentrations using real-time instruments instead of using the DustTrak Aerosol monitor that monitor mass concentrations only.
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참고문헌 (42)
참고문헌 신청
ACGIH / 2013 / Threshold limit values for chemical substances and physical agents and biological exposure indices / American Conference of Governmental Industrial Hygienists :74~77
Behnoush Y / 2008 / Characterization of airborne particles during production of carbonaceous nanomaterials / Environ Sci Technol 42:4600~4606
Berndt ME / 2008 / The origins of public concern with taconite and human health: Reserve mining and the asbestos case / Regulatory Toxicology and Pharmacology 52:S31~S39
Brown DM / 2001 / Size-dependent proinflammatory effects of ultrafine polystyrene particles: A role for surface area and oxidative stress in the enhanced activity of ultrafines / Toxicol Appl Pharm 175:191~199
Chung A / 2001 / Comparison of real-time instruments used to monitor airborne particulate matter / J Air Waste Manage Assoc 51:109~120
Behnoush Y / 2008 / Characterization of airborne particles during production of carbonaceous nanomaterials / Environ Sci Technol 42:4600~4606
Berndt ME / 2008 / The origins of public concern with taconite and human health: Reserve mining and the asbestos case / Regulatory Toxicology and Pharmacology 52:S31~S39
Brown DM / 2001 / Size-dependent proinflammatory effects of ultrafine polystyrene particles: A role for surface area and oxidative stress in the enhanced activity of ultrafines / Toxicol Appl Pharm 175:191~199
Chung A / 2001 / Comparison of real-time instruments used to monitor airborne particulate matter / J Air Waste Manage Assoc 51:109~120
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