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KMID : 1039220180280020151
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Journal of Korean Society of Occupational and Environmental Hygiene
2018 Volume.28 No. 2 p.151 ~ p.157
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Exposure Assessment of PM10 in Expressway Toll Booths
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Nam Mi-Ran
Phee Young-Gyu
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Abstract
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Objectives: This study was conducted in order to evaluate PM10 concentrations at eight highway tollgate booths from July to September 2017.
Methods: A total of 16 samples were collected from eight toll booths. Each PM10 sample was collected using a 37 mm PTFE filter attached to a Personal Environment Monitor.
Results: The geometric mean concentrations of PM10 in the toll booths was 83.51 ㎍/㎥. The mean PM10 concentrations measured on freight roadways were much higher than those of measured on general roadways(102.46 ㎍/㎥ and 68.05 ㎍/㎥, respectively). PM10 was revealed to be higher in the morning(105.59 ㎍/㎥) than at dawn or in the afternoon(71.26 ㎍/㎥ and 61.22 ㎍/㎥, respectively). The mean PM10 concentration in toll booths ventilated through an air conditioner was higher than that for those using a window or no ventilation. The rate of exceeding the Ministry of Environment Maintenance Limit(200 ㎍/㎥) was 6.25%, and the rate of exceeding the Ministry of Labor Recommended Limit(150 ㎍/㎥) was 12.5%.
Conclusions: In order to protect the health of toll booth workers exposed to airborne dust, it is necessary to check the exposure level from indoor air quality on a regular basis and to manage it appropriately according to the results.
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KEYWORD
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expressway, concentration, PM10, toll
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