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라돈 노출 유효선량 평가를 위한 연간 평균 라돈 농도 예측모델 개발
이철민 ( Cheolmin Lee ),강대용 ( Daeyong Kang ),고상백 ( Sangbaek Koh ),조용석 ( Yongseog Cho ),이다정 ( Dajeong Lee ),이슬비 ( Sulbee Lee ) 한국환경과학회 2016 한국환경과학회지 Vol.25 No.8
This research, sponsored by the Korean Ministry of Environment in 2014, was the first epidemiological study in Korea that investigated the health impact assessment of radon exposure. Its purpose was to construct a model that calculated the annual mean cumulative radon exposure concentrations, so that reliable conclusions could be drawn from environment-control group research. Radon causes chronic lung cancer. Therefore, the long-term measurement of radon exposure concentration, over one year, is needed in order to develop a health impact assessment for radon. Hence, based on the seasonal correction model suggested by Pinel et al.(1995), a predictive model of annual mean radon concentration was developed using the year-long seasonal measurement data from the National Institute of Environmental Research, the Korea Institute of Nuclear Safety, the Hanyang University Outdoor Radon Concentration Observatory, and the results from a 3-month (one season) survey, which is the official test method for radon measurement designated by the Korean Ministry of Environment. In addition, a model for evaluating the effective annual dose for radon was developed, using dosimetric methods. The model took into account the predictive model for annual mean radon concentrations and the activity characteristics of the residents.
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이상윤, 김재용*, 임형준, 윤기정, 최홍렬*, 고상백**, 강대희, 조수헌 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.2
목적 : 작업장에서의 누적소음노출값과 혈압의 변화 사이의 관계를 관찰하기 위한 단면 연구를 시행하였다. 방법 : 소음발생 제조업체의 남성근로자 중 건강진단 자료, 설문지 자료, 인사기록이 모두 갖추어진 852명을 연구대상으로 하였다. 작업장 소음측정값은 34개 지점에서 측정된 작업환경 측정 보고서 값을 사용하였고, 혈압은 건강진단시 측정한 수축기 혈압과 이완기 혈압 각각의 평균을 이용하였다. 가능한 교란변수들을 건강진단시 설문조사를 통하여 조사하였다. 근로자의 근무기간과 근무했던 작업부서의 소음노출값을 이용하여 누적소음노출값을 추정하였고, 이에 따라 전체 연구대상 근로자를 저소음노출군, 중등도소음노출군, 고소음노출군, 과다소음노출군으로 구분하였다. 누적소음노출값으로 구분한 소음노출군 사이에 평균 수축기 혈압 및 이완기 혈압의 차이가 있는 지를 나이, 비만도지수, 혈중 콜레스테롤값, 고혈압의 가족력, 흡연력, 음주력 등의 가능한 교란변수들의 영향을 통제한 상태에서 비교하였다. 결과 : 가능한 교란변수들을 보정한 상태에서 저소음노출군에서 과다소음노출군으로 갈수록 수축기 혈압 및 이완기 혈압의 증가가 있는지를 관찰하기 위해 일반선형모델을 이용하여 분석하였을 때, 수축기 혈압 및 이완기 혈압 모두 소음노출군이 혈압 변화의 유의한 설명변수였고, 수축기 혈압 및 이완기 혈압 모두 저소음노출군에 비해 과다소음노출군이 각각 2.1 mmHg, 2.7 mmHg 만큼 높았다. 결론 : 이는 만성적으로 누적된 고소음에의 노출로 인하여 혈압 상승의 가능성이 있음을 시사한다. Objectives : The association of workplace cumulative noise exposure and blood pressure was investigated in this study using cross-sectional design. Methods : The study population comprised 852 manufacturing male workers of whom occupational health examination data, questionnaire and personnel records were available. Workplace ambient noise monitoring data was used for calculating individual cumulative noise exposure level. Mean of each systolic and diastolic blood pressure of occupational health examination data was used for individual systolic and diastolic blood pressure level. Possible confounding variables including family history of hypertension, smoking habit, alcohol drinking habit were collected by questionnaire. On the basis of job location and duration of work at the location, a cumulatlve time-weighted average noise level was calculated for each workers. According to this cumulative noise exposure level, each study subject was categorized as low noise exposure group, moderate noise exposure group, high noise exposure group, very high noise exposure group. Among noise exposure groups, mean of systolic and diastolic blood pressure was compared after adjusting possible confounding variables such as age, body mass index, serum cholesterol level, family history of hypertension, smoking history, alcohol drinking habit. Results : After adjusting possible confounding variables, noise exposure group was signnificant explanatory variables for both systolic and diastolic blood pressure, and mean of both systolic and diastolic blood pressure of very high exposure group was higher than that of low exposure group. Conclusions : These findings suggested that the high cumulative noise exposure might elevate the blood pressure.
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