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김난희 ( Nan Hee Kim ),위환 ( Whan Wi ),조광운 ( Gwang Woon Jo ),이윤국 ( Youn Goog Lee ),윤상훈 ( Sang Hoon Yoon ),강영주 ( Yeong Ju Kang ),김은선 ( Eun Sun Kim ),서광엽 ( Gwang Yeob Seo ) 한국환경분석학회 2013 환경분석과 독성보건 Vol.16 No.2
The analysis of raw water and purified water from 105 social welfare organizations in Gwangju was performed to find out the purification effect of water purifiers in use. In the study, 105 purified water samples and corresponding raw water samples (95 from tap water, 10 from groundwater) were analyzed. Forty six inspection items of drinking water standard and main minerals (Ca2+, Mg2+, K+, Na+) were analyzed for groundwater and 28 items such as heavy metals, microorganisms, disinfection by-products, aesthetic materials were analyzed for tap water. When the concentration of each item in purified water showed lower than that of raw water, we expressed the results as the positive(+) effect and vice verse, negative(-) effect. The results of the purification effect of water purifier using tap water and groundwater were presented (+) effect 39.6% and (-) effect 28.0%, (+) effect 39.1% and (-) effect 30.1%, respectively.
물놀이형 수경시설의 수질과 항생제 내성 대장균 분포에 관한 연구
윤상훈,김선경,김난희,위환,이세행,조광운,김동수,조영관,Yoon, Sang-Hoon,Kim, Seon-Gyeong,Kim, Nan-Hee,Wi, Whan,Lee, Se-Hang,Jo, Gwang-Woon,Kim, Dong-Su,Cho, Young-Gwan 한국환경보건학회 2014 한국환경보건학회지 Vol.40 No.3
Objective: This study was performed in order to investigate the distribution of antibiotic resistant E. coli and water quality in waterscape facilities. Methods: Nine waterscape facilities were selected and classified into three types: ground, wall and general fountain. The items analyzed in this study were pH, turbidity, $KMnO_4$ consumption, total colony, total coliforms, fecal coliforms and E. coli. Additionally, an antibiotic resistance test on E. coli was performed. Results: There were no sampling sites that exceeded the permitted limits of water quality, but the concentration of pollutants was high at the beginning operation in June. Moreover, concentration of turbidity, $KMnO_4$ consumption and total colony were higher in ground fountains than in wall and general fountains. Five species of antibiotic resistant E. coli were detected from three sampling sites. Conclusions: The waterscape facilities were significantly contaminated with water microorganisms, especially total colony, total coliforms and fecal coliforms. Disinfection and filtration systems to remove pollutants should be installed for safe waterscape facilities.
이윤국 ( Youn Goog Lee ),윤상훈 ( Sang Hoon Yoon ),조광운 ( Gwang Woon Jo ),위환 ( Whan Wi ),김난희 ( Nan Hee Kim ),강영주 ( Yeong Ju Kang ),김은선 ( Eun Sun Kim ),서광엽 ( Gwang Yeob Seo ) 한국환경분석학회 2013 환경분석과 독성보건 Vol.16 No.2
This study was performed to investigate the water quality of non-designated spring in Gwangju. Samples were collected at 9 sites from April 2012 to March 2013. The average concentrations of physicochemical items at each sites satisfied with drinking water guideline except microorganisms. The concentrations of main minerals including Ca2+, Mg2+, K+ and Na+ showed generally similar and higher than those of bottled minerals water in some sites. Total coliforms and fecal coliforms were detected in some sample collected except S1 and S4 site. The microorganisms isolated in the natural mineral water found out E. coli (62%), Raoultella planticola (10%), Citrobacter freundii (9%) and so on. Detection of these microorganisms showed that the environment around the spring had been exposed to fecal contamination. For the efficient control, the government office needs to designate the S1 and S4 site found out the acceptance for drinking water standard as the management spring water.