Personal Carbon Monoxide Exposures and Carboxyhemoglobin Levels of the Traffic Policemen

일부 도시 교통경찰관의 일산화탄소 개인 노출과 혈중 카르복실헤모글로빈에 관한 연구

  • Chung, Yong (Dept. of Preventive Medicine and Environmental Research, Yonsei University) ;
  • Shin, Dong-Chun (Dept. of Preventive Medicine and Environmental Research, Yonsei University) ;
  • Park, Seong-Eun (Dept. of Preventive Medicine and Environmental Research, Yonsei University) ;
  • Lee, Ki-Young (Harvard School of Public Health Dept. of Environmental Health)
  • 정용 (연세대학교 환경공해연구소) ;
  • 신동천 (연세대학교 환경공해연구소) ;
  • 박성은 (연세대학교 환경공해연구소) ;
  • 이기영 (하버드 보건대학원 환경보건과)
  • Published : 1995.12.01

Abstract

The number of motor vehicles in Korea has increased to about 4 million, and the exhaust gases of these vehicles have become a more threatening factor to public health. Traffic policemen are one of the highest health risk groups since they work on roadsides where they are exposed to high levels of air pollutants. The health effects on them due to air pollution were determined by measuring personal carbon monoxide(CO) exposure and carboxyhemoglobin(COHb) level in blood. Thirty-one traffic policemen in Seoul volunteered to be subjects of the study. In October 1992, personal CO exposure was measured by a CO passive sampler. The subjects wore the CO passive sampler for 8 hours while on duty. The exposed samples were analyzed by gas chromatography. Blood samples from each subject were collected just after the exposure sampling, and were analyzed within 3 hours of blood collection by a CO-oximeter. The activities of the subjects were recorded by the subject in 30 minute intervals using an activity log sheet containing location and time spent. Personal CO exposure were ranged between 0.1 and 14.5ppm, eith an average of 5.9ppm. Carboxyhemoglobin levels ranged from 1.1% to 6.9%, with an average of 3.6%. policemen on duty outdoors had significantly higher CO exposures and COHb levels than policemen on duty indoors(p<0.01). Personal CO exposure and COHb were positively correlated, although the coefficient was not significant. The relationship between CO level and COHb level was confounded by smoking status. Among smokers, COHb level was significantly higher as CO exposure and hours worked outdoors increased.

Keywords

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