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http://dx.doi.org/10.15269/JKSOEH.2021.31.1.13

Exposure Assessment of Cashiers at Expressway Tollbooths  

Park, Hae Dong (Occupational Safety and Health Research Institute, KOSHA)
Kang, Joon Hyuk (Occupational Safety and Health Research Institute, KOSHA)
Kim, Joonbeom (Occupational Safety and Health Research Institute, KOSHA)
Publication Information
Journal of Korean Society of Occupational and Environmental Hygiene / v.31, no.1, 2021 , pp. 13-21 More about this Journal
Abstract
Objectives: The purpose of this study was to evaluate the exposures of cashiers who work at expressway tollbooths. Methods: We measured temperature(temp.), relative humidity(RH), and contaminants with direct reading instruments at ten expressway toll gate in September 2015. Elemental carbon was collected on the quartz filters and analyzed with an OCEC analyzer. Results: The average levels for temp., RH, carbon monoxide, carbon dioxide, dust(PM10), and black carbon were respectively 24.6~27.8℃, 32.3~65.3%, 0.5~1.2 ppm, 456~559 ppm, 12~111 ㎍/㎥, and 3.1~10.1 ㎍/㎥ at each tollbooth. The concentrations of elemental carbon within the tollbooth(1.8~7.2 ㎍/㎥) were lower than outdoors(2.5~10.0 ㎍/㎥), but exhibited a high correlation(r2=0.855). The exposure levels for carbon monoxide, black carbon, and elemental carbon in the tollbooths were significantly higher than the offices. The concentrations of black carbon and elemental carbon showed a high correlation(r2=0.756). Conclusions: The levels of contaminants were below the occupational exposure limits in the expressway tollbooth. There were ventilation and air conditioning systems in the booths, but it is necessary to maintain and use the systems properly.
Keywords
black carbon; diesel exhaust; elemental carbon; expressway tollbooth;
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