Safety and Health at Work

  • 제14권2호
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  • Pages.215-221
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  • 2023
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  • 2093-7911(pISSN)
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  • 2093-7997(eISSN)
산업안전보건연구원 (Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency)
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Measurement of Airborne Particles and Volatile Organic Compounds Produced During the Heat Treatment Process in Manufacturing Welding Materials

  • Myoungho Lee (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Sungyo Jung (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Geonho Do (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Yeram Yang (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Jongsu Kim (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Chungsik Yoon (Institute of Health and Environment, Graduate School of Public Health, Seoul National University)
  • 투고 : 2022.09.04
  • 심사 : 2023.03.06
  • 발행 : 2023.06.30
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초록

Background: There is little information about the airborne hazardous agents released during the heat treatment when manufacturing a welding material. This study aimed to evaluate the airborne hazardous agents generated at welding material manufacturing sites through area sampling. Methods: concentration of airborne particles was measured using a scanning mobility particle sizer and optical particle sizer. Total suspended particles (TSP) and respirable dust samples were collected on polyvinyl chloride filters and weighed to measure the mass concentrations. Volatile organic compounds and heavy metals were analyzed using a gas chromatography mass spectrometer and inductively coupled plasma mass spectrometer, respectively. Results: The average mass concentration of TSP was 683.1±677.4 ㎍/m3, with respirable dust accounting for 38.6% of the TSP. The average concentration of the airborne particles less than 10 ㎛ in diameter was 11.2-22.8×104 particles/cm3, and the average number of the particles with a diameter of 10-100 nm was approximately 78-86% of the total measured particles (<10 ㎛). In the case of volatile organic compounds, the heat treatment process concentration was significantly higher (p < 0.05) during combustion than during cooling. The airborne heavy metal concentrations differed depending on the materials used for heat treatment. The content of heavy metals in the airborne particles was approximately 32.6%. Conclusions: Nanoparticle exposure increased as the number of particles in the air around the heat treatment process increases, and the ratio of heavy metals in dust generated after the heat treatment process is high, which may adversely affect workers' health.

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과제정보

The authors gratefully appreciate the financial support from the NRF & Ministry of Science and ICT, Republic of Korea (No. 2020R1A2C1007309) and the Ministry of Education & Republic of Korea Research Foundation (BK21 FOUR A0461-20220100).

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