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이병국,정무수,황규윤,안규동 한국산업위생학회 1991 한국산업보건학회지 Vol.1 No.2
To obtain the basic information of environmental working status in mercury industries in Korea, 26 mercury industries were investigated with mercury concentration in air and various factors affecting on workplace environment. The results were as follows ; 1. The mean air concentration of mercury was 0.046±0,035 ㎎/㎥ in 26 mercury industries. 2. The highest mean air concentration of mercury among 26 mercury industries classified by type of product was found in sodium hydroxide manufacturing industries (0.054±0.020 ㎎/㎥) and the lowest mean was found in mercury battery manufacturing industries (0.003±0.002 ㎎/㎥). 3. While the highest mean air concentration of mercury was found in manual method (0.061±0.041 ㎎/㎥) among the types of operation method, lowest one was found in automatic method (0.035±0.025 ㎎/㎥). 4. While the mean air concentration of mercury was 0.023±0.018 ㎎/㎥ in good clean status of workshop, the mean air concentration of mercury in bad clean status was 0.06±0.033 ㎎/㎥. Among various factors affecting on the air concentration of mercury, clean liness of workshop showed statistically significant difference with air concentration of mercury, and automation of workshop and local exhaust ventilation also played important role in control the air concentration of mercury in the working environment.
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구리(Ⅱ)-시프염기 착물과 과산화수소의 반응속도 및 메카니즘
김선덕,정무수,진경록,김창수,Kim, Sun-Deuk,Joung, Mu-Su,Jin, Gyoung-Rok,Kim, Chang-Su 대한화학회 1995 대한화학회지 Vol.39 No.12
시프 염기 구리(II) 착물에 의한 과산화수소 분해속도를 측정하였다. 과산화수소와 구리(II)-시프염기 착물의 반응속도는 $Cu^{II}BSDT$ 및 $Cu^{II}BSTP$인 경우 pH에 따라 증가하였으나 $Cu^{II}BSTT$의 경우 증가하였다가 감소하였다. 이 반응의 메카니즘은 과산화수소의 시프염기 구리(II) 착물의 탈양성자를 거친 다음에 속도결정단계에서 퍼옥소 구리착물이 생성되는 반응과정과 일치한다. Rates of the decomposition of hydrogen peroxide by copper(Ⅱ)-Schiff base complexes were measured at various concentrations of hydrogen peroxide. Decomposition rates of hydrogen peroxide increased with increasing pH for CuⅡBSDT and CuⅡBSTP but then decreased with the same variation of the pH for CuⅡBSTT. A possible mechanism in accord with experimental results was proposed. The mechanism involves the deprotonation of copper(Ⅱ)-Schiff base complexes of hydrogen peroxide, followed by the formation of peroxo complexes at the rate-determining step.
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산업안전보건관리자 특성과 화학물질 유해성 정보전달의 관련성
김기웅 ( Ki Woong Kim ),박진우 ( Jin Woo Park ),정무수 ( Mu Soo Jeong ) 한국산업위생학회 2012 한국산업보건학회지 Vol.22 No.2
Objectives: The aim of the present study was undertaken to investigate the association between communication for chemical hazard information and characteristics of occupational safety and health managers. Subjects and Methods: We surveyed 78 occupational safety and health managers (64 male and 14 female) in 78 chemical manufacturing plants. Data were obtained using a self-reported questionnaire about size and type of company, products, communication system for chemicals and work-related characteristics of occupational safety and health managers. All analyses in this study were performed using SPSS program 12.0. Results: 64.1% of the study participants were occupational health managers aged 39.3 years on average and were graduated from college and university around 90%. 30.0% and of them were majoring in chemistry (engineering chemistry), 18.0% occupational health, 16% nursing and 30.0% others. Occupational safety managers were aged 39.4 years on average, 42.9% of them were majoring in chemistry (engineering chemistry), 21.4% environmental engineering, 10.7% occupational safety and 25% others. 86% of occupational health managers and 71.4% of occupational safety managers were classified as office job. Over 94% of the hazards information for chemicals were delivered by occupational safety and health managers, but about 28.2% workers preferred outside experts who have a profound knowledge about occupational safety and health and understandable, Occupational safety and health managers and workers had difficulties in understanding toxicological information, hazards identification, stability/reactivity, composition/information on ingredients, physical/chemical properties and ecological information. On multiple logistic regression analysis for the 16 heading of material safety data sheet, content of material safety data sheet was significantly associated with education level (odds ratio=0.286, 95% confidence interval=0.105-0.780). The hazard identification (odds ratio=3.947, 95% confidence interval=1.092-14.271) and toxicological information (odds ratio=0.841, 95% confidence interval=0.705-0.998) were significantly associated with type of occupation. Conclusions: This finding implies that the education level, type of occupation and speciality of occupational safety and health managers may affects hazards information delivery.
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