한국산업보건학회지 (Journal of Korean Society of Occupational and Environmental Hygiene)

  • 제24권4호
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  • Pages.462-470
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  • 2014
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  • 2384-132X(pISSN)
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  • 2289-0564(eISSN)
한국산업보건학회 (Korean Industrial Hygiene Association)
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석재가공 공정에서 발생되는 분진과 석영의 입자크기별 농도 특성

Particle Size-Related Dust and Quartz Concentration of Stone Grinding Operations

  • 김성환 (대구한의대학교 보건대학원) ;
  • 배혜정 (대구한의대학교 산업보건연구소) ;
  • 정종현 (대구한의대학교 보건학부) ;
  • 피영규 (대구한의대학교 보건학부)
  • 투고 : 2014.11.23
  • 심사 : 2014.12.20
  • 발행 : 2014.12.31
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초록

Objectives: The purpose of this study was to evaluate quartz concentrations in airborne respirable dust and particle size-related quartz concentrations. Methods: Respirable dust samples were collected using a 10 mm Dorr-Oliver nylon cyclone equipped with a 37 mm, $5{\mu}m$ pore size PVC filter. Dust samples were collected with a Marple's personal cascade impactor from stone grinding operations in five stone-related business located in the Gyeongsangbuk-do area. Results: The geometric mean of quartz concentration in the respirable dust was $0.170mg/m^3$, and the rate of exceeding the Korean Occupational Exposure Limit(KOEL) was 93.3%. The quartz concentration by particle size shows that it was the highest($0.115mg/m^3$) in stage 5($3.50-6.00{\mu}m$), which corresponds with the size of respirable particle. The smaller the particle sizes were, the higher quartz the content became. The mass fractions of inhalable, thoracic, and respirable dust were 72.1%, 36.0%, and 14.4%. Conclusions: The rate of the quartz concentration in respirable dust from stone grinding operations exceeding the American Conference of Governmental Industrial Hygienists Threshold Limit Values was 100%, which means proper work environmental management is required through regular working environmental measurements. Given that the stone grinding operations had a higher small size dust concentrations, there is a need to reduce respirable dust, such as through wet operation and local exhaust ventilation.

키워드

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피인용 문헌

  1. Exposure Assessments of Environmental Contaminants in Ansim Briquette Fuel Complex, Daegu(III) - Contribution and distribution characteristics of air pollutants according to elemental carbon, crystalline silica, and stable isotope ratio - vol.25, pp.3, 2015, https://doi.org/10.15269/JKSOEH.2015.25.3.392
  2. Exposure Assessment of Airborne Quartz from Earthwork Sites vol.25, pp.4, 2015, https://doi.org/10.15269/JKSOEH.2015.25.4.584