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노출 시나리오를 이용한 대학생들의 유해 공기오염물질 노출 추정
김순신 ( Sun Shin Kim ),홍가연 ( Ga Yeon Hong ),김동건 ( Dong Keon Kim ),김성삼 ( Sung Sam Kim ),양원호 ( Won Ho Yang ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.1
Studies evaluating the health effects of hazardous air pollutants assume that people`s exposure to typical pollutant level is the same as specific regional pollutant level. However, depending on social and demographic factors, time-activity pattern of people can vary widely. Since most people live in indoor environments over 88% of the day, evaluating exposure to hazardous air pollutants is hard to characterize. Objective of this study was to estimate the exposure levels of university students of NO2, VOCs(BTEX) and PM10 using the scenarios with time-activity pattern and indoor concentrations. Using data from time-use survey of National Statistical Office in 2009, we investigated time-activity pattern of university students and hourly major action. A total of 1,057 university students on weekday and 640 on weekend spent their times at indoor house 13.04 hr(54.32%), other indoors 7.70 hr(32.06%), and transportation 2.36 hr(9.83%). Indoor environments in which university students spent their times were mainly house and school. Air pollutants concentrations of other indoor environments except house and school such as bar, internet cafe and billiard hall were higher than outdoors, indicating that indoor to outdoor ratios were above 1. According to three types of exposure scenarios, exposure to air pollutants could be reduced by going home after school.
김동건 ( Dong Keon Kim ),김명수 ( Myeong Su Kim ),김순신 ( Sun Shin Kim ),홍가연 ( Ga Yeon Hong ),이석용 ( Seok Yong Lee ),양원호 ( Won Ho Yang ) 대구가톨릭대학교 자연과학연구소 2012 자연과학연구논문집 Vol.10 No.1
This study progressed to survey formaldehyde(HCHO) concentration at using passive sample and active sampler in New building. We selected places such as department office, lecture room, professor`s room, studio room, and hallway. The highest average concentration of formaldehyde was 544.13 ug/m3 at active sampler in studio room. Whereas lowest average concentration of formaldehyde was 4.91 ug/m3 at active sampler in hall way. Specially the fact of the studio room was more than 8 times on the baseline, concentration of the remaining places are above the baseline. According to analysis new building which was built should need to improvement in indoor air quality.
계절에 따른 사무실 근로자의 이산화질소 노출에 대한 직장 및 주택실내 기여도
양원호 ( Won Ho Yang ),김동건 ( Dong Keon Kim ),홍가연 ( Ga Yeon Hong ),김순신 ( Sun Shin Kim ),안호기 ( Ho Gi Ahn ) 한국산업위생학회 2012 한국산업보건학회지 Vol.22 No.2
People are exposed to air pollution from a range of indoor and outdoor sources. Concentration of nitrogen dioxide (NO2), which is hazardous to health, can be significant in both types of environment. This paper reports on the measurement and analysis of indoor and outdoor NO2 concentrations and their comparison with measured personal exposure in house and workplace indoors with 28 office workers during winter and summer seasons. Time activity patterns were used to determine the effects of these factors on personal exposure. The residential indoor and office indoor times were 12.29±1.58, 7.86±1.97 hours in winter and 11.04±2.18, 8.26±2.04 hours in summer, respectively. Measured residential indoor, outdoor and office indoor, personal exposure NO2 concentrations were 23.10±8.46 ppb, 23.97±6.86 ppb, 21.91±11.50 ppb, 22.08±8.64 ppb in winter, and 19.94±6.04 ppb, 21.21±6.84± ppb, 22.55±9.54 ppb, 27.45±8.96 ppb in summer, respectively. Contributions of residential and office indoor NO2 concentration on personal exposure were estimated by 57.98%, 35.62% in winter and 37.38%, 28.97% in summer, respectively.
캠프 캐럴 인근 주민의 혈중 및 요중 휘발성 유기화합물 평가
임현술 ( Hyun Sul Lim ),양원호 ( Won Ho Yang ),김근배 ( Geun Bae Kim ),조용성 ( Young Sung Cho ),민영선 ( Young Sun Min ),이관 ( Kwan Lee ),이덕희 ( Duk Hee Lee ),주영수 ( Young Su Ju ),김순신 ( Sun Shin Kim ),허정 ( Jung Heo ) 한국산업보건학회 2016 한국산업보건학회지 Vol.26 No.1
Objectives: Exposure to volatile organic compounds such as trichloroethylene(TCE) and perchloroethylene(PCE), along with Agent Orange, that were issued around Camp Carroll US Army Base situated in Waegwan, Chilgok-gun, Gyeongsangbuk-do Province, Korea. The main objective of this study was to assess the exposure to TCE and PCE of residents of the area surrounding Camp Carroll. Methods: The TCE, PCE and trichloroethanol(TCEOH) concentrations in blood and trichlroroacetic acid(TCA) and TCEOH concentrations in urine were measured and analyzed in a total of 1,033 residents around Camp Carroll. TCA and TCEOH are metabolites of TCE and PCE, respectively. The information on demographic characteristics and exposure variables in relation to underground water were obtained through a questionnaire completed by the subjects. Results: TCE, PCE and TCEOH concentrations were not detected in blood. Detection rates of TCA and TECOH concentrations in urine were 98.5% and 36.6%, respectively. Creatinine-corrected average TCA and TCEOH concentrations were 12.23±23.81 μg/g and 0.66±4.31 μg/g, respectively. A significant difference was not shown between the drinking group and no drinking group for underground water, which was assumed as a potential route of exposure to TCE and PCE through the consumption of ground water. However, females drinking ground water showed a significantly higher mean level of TCA in urine than did males. There was no significant difference according to drinking ground water as a potential source of exposure to TCE and PCE in residents around Camp Carroll. Conclusions: Considering the statistical analysis of factors affecting exposure to TCE and PCE in ground water along with previous reports, TCA in urine as exposure to TCE and PCE might not be appropriate because it is found in chlorinated drinking water. Therefore, TCA concentration in urine may be the result of drinking of chlorinated water.
박혜림 ( Hye Lim Park ),이선애 ( Seon Ae Lee ),김순신 ( Sun Shin Kim ),김동건 ( Dong Keon Kim ),홍가연 ( Ga Yeon Hong ),양원호 ( Won Ho Yang ),이식용 ( Seok Yong Lee ) 대구가톨릭대학교 자연과학연구소 2012 자연과학연구논문집 Vol.10 No.1
It`s the purpose that the status and trends of industrial accidents, the types of industrial accidents to foreign worker based on research papers and compare foreign case with domestic case to the object of the future how should we go to the better way. Key words by this papers. Searching on the online by, `foreign workers, industrial accidents, industrial trainees and Employment Permit System (EPS)` to collect and review research papers. Some of the papers are researching by the status and trends of industrial accidents, and other papers researching by compensation by industrial accidents and a way out legal action by increasing number of illegal aliens but many researches are insufficient for solution by reducing number of illegal stays and industrial accidents. It`s the trends that increasing industrial accidents of foreign workers much higher than korean workers. whereas many studies which had not been made. There are necessary to do researching on ways to reduce industrial accidents for foreign workers.
류진희 ( Jin Hee Ryu ),안유경 ( Yoo Kyung An ),김유정 ( Yoo Jung Kim ),이석용,양원호 ( Won Ho Yang ),김순신 ( Sun Shin Kim ) 대구가톨릭대학교 자연과학연구소 2013 자연과학연구논문집 Vol.11 No.1
An aromatic hydrocarbon compound basic are composed of only a benzene ring, a benzene (C6H6) is a substance basic compound reaction. Or inhaled in the form of steam, benzene is absorbed contact to the skin, but to suppress the central nervous system due to acute exposure, when exposed chronically to suppress the hematopoietic organs, such as multiple myeloma and leukemia I will induce hematological disease. In this study, by applying the long-term exposure rate based on the data measured by using the measurement data short-term measured in Japan, to understand the exposure distribution and contribution of each local environment and the exposure value predicted. Investigate the measurement data (house 35, School 37, multi-use facility 32, office 10, Total 118) short measured in the country, and calculates the weighted average of the concentration of each group. Was calculated the concentration over time by multiplying the life-time studies NSO the concentration of each population was calculated by weighted average. If the total population, in-room of new homes with the highest average concentration when viewed separately total population, students, housewives, the three population, 3.84 μg/m3, housewife 4.44 μg/m3, 3.85 μg/m3 student, company employee became 3.40 μg/m3. For new homes, it is possible to know that the value of the exposure benzene concentration of the day of housewife living long benzene causes, new furniture, adhesive, or the like material finish construction was measured highest.
시간활동 양상과 국소환경 농도를 이용한 근로자의 유해 공기오염물질 노출 예측
이현수 ( Hyun Soo Lee ),이석용 ( Seo Kyong Lee ),허정 ( Jung Heo ),김순신 ( Sun Shin Kim ),양원호 ( Won Ho Yang ),이병준 ( Byoung Jun Lee ) 한국산업보건학회 2014 한국산업보건학회지 Vol.24 No.4
Objectives: Time-activity studies have become an integral part of comprehensive exposure assessment and personal exposure modeling. The aims of this study were to estimate exposure levels to nitrogen dioxide(NO2) and volatile organic compounds(VOCs), and to compare estimated exposures by using time-activity patterns and indoor air concentrations. Methods: The major microenvironments for office workers were selected using the Time-Use Survey conducted by the National Statistical Office in Korea in 2009. A total of 9,194 and 6,130 workers were recruited for weekdays and weekends, respectively, from the Time-Use Survey. It appears that workers were spending about 50% of their time in the house and about 30% of their time in other indoor areas during the weekdays. In addition, we analyzed the time-activity patterns of 20 office workers and indoor air concentrations in Daegu using a questionnaire and time-activity diary. Estimated exposures were compared with measured concentrations using the time-weighted average analysis of air pollutants. Conclusions: According to the time-activity pattern for the office workers, time spent in the residence indoors during the summer and winter have been shown as 11.12±2.20 hours and 12.48±1.77 hours, respectively, which indicates higher hours in the winter. Time spent in the office in the summer has been shown to be 1.5 hours higher than in the winter. The target pollutants demonstrate a positive correlation (R2=0.076~0.553)in the personal exposure results derived from direct measurement and estimated personal exposure concentrations by applying the time activity pattern, as well as measured concentration of the partial environment to the TWA model. However, these correlations were not statistically significant. This may be explained by the difference being caused by other indoor environments, such as a bar, cafe, or diner.
최민지 ( Min-ji Choi ),박지영 ( Ji-young Park ),임미영 ( Mi-young Lim ),솨이지엔페이 ( Jianfei Shuai ),허정 ( Jung Heo ),정다영 ( Da-young Jung ),류현수 ( Hyeon-su Ryu ),오나래 ( Na-rae Oh ),김순신 ( Sun-shin Kim ),양원호 ( Won-ho Y 한국치위생학회 2017 한국치위생학회지 Vol.17 No.1
Objectives: This study was conducted to suggest the necessity of education about toothpaste usage to infants, preschoolers, and their parents. Also, another purpose is to provide basic data that is necessary for oral health education about accurate cognition and usage of toothpaste. Methods: From October to December 2015, we conducted a survey on parents of 0~4 years old infants and preschoolers about toothpaste usage based on the data of a questionnaire with a total of 505 subjects. The survey questions were composed of general characteristics of infants, preschoolers and their parents, and toothpaste usage. Results: Usage frequency of toothpaste for infants and preschoolers increased with age (p<0.001), and infants and preschoolers in homes with monthly income under 4 million won showed high frequency of toothpaste usage (p<0.001). Toothpaste mouth rinsing of infants and preschoolers increased with age (p<0.001), while on the other hand, toothpaste swallowing decreased (p<0.001). Conclusions: In this study, it was shown that the factors that effect toothpaste usage in infants and preschoolers were age and average monthly income of the family. This suggests the necessity of oral health education to parents about usage of toothpaste in infants and preschoolers.
Vitamin A의 幾何異性體 分離에 關한 硏究(第一報)
姜成浩,金順信 梨花女子大學校 韓國生活科學硏究院 1974 韓國生活科學硏究院 論叢 Vol.13 No.-
The isomers of vitamin A in synthetic vitamin A, Meyong Tai fish (Theragra chalcogramma) raw liver and its liver oil, pylorus and Shark liver oil capsule were separated by thin-layer chromatography on Kieselgel G with petroleum ether (b.p. 40∼45℃)and mesityl oxide as the developing solvent. The results were as follows: In synthetic vitamin A, Meyong Tai fish raw liver and its liver oil, pylorus, all-trans form and 11-cis form were separated and in Shark liver oil capsule, all-trans form and 13-cis form were separated.