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

Korean Industrial Hygiene Association (한국산업보건학회)
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A Study on the Distribution of VOC Concentrations by Attachment Position of Air Samplers for Working Environment Measurement

작업환경측정 시료 채취기의 부착 위치에 따른 유기화합물의 농도 분포에 관한 연구

  • Kwon, Yung-Gyu (Department of Dental Hygiene, Busan cacao University) ;
  • Won, Jung Il (Chungbuk Provincial College) ;
  • Jang, Hyung Seok (Department of pathology Hanyang University Medical Center) ;
  • Sim, Sang-hyo (Department of Occupational and Environmental Medicine, Hanyang University Medical Center)
  • Received : 2015.07.23
  • Accepted : 2015.08.12
  • Published : 2015.09.30
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Abstract

Objectives: The purpose of this study is to investigate differences in concentration according to the position at the left or right shoulder within a 30 cm of radius of workers' respirators and provide basic data for the establishment of an industrial health policy. Methods: Personal samples were collected from a total of 65 workers from 27 manufacturing firms in South Gyeongsang-do Province from November 5, 2011 to December 30, 2012 after classifying the laborers into left- and right-side groups. The organic compound samples were collected and analyzed in accordance with the NIOSH Manual of Analytical Methods (NMAM) 1501. Results: In terms of the concentration of organic compounds collected from both left and right shoulders at the position of workers' respirators, isobutyl acetate was the highest with 145 ppm at the left shoulder, followed by ethyl acetate (133.5 ppm) and toluene (38.13 ppm). At the right shoulder, on the contrary, ethyl acetate (149.3 ppm) was the highest, followed by toluene (46.26 ppm), xylene (29.63ppm) and isopropyl alcohol (28.06 ppm). Overall, the right shoulder was higher than the left shoulder in terms of concentrations. Conclusions: For the measurement of the working environment, workers' personal samples should be collected at the place closest to the respirator. In terms of the reduction of error, the attachment of two sample media is expected to reduce errors in exposure assessment.

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