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RISS 인기검색어
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- 저자 : 최춘석(Choon Suck Choe) (검색결과 2 건)
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신문기,이충대,하현섭,최춘석,김용희,Shin, Moon-Khee,Lee, Choong-Dae,Ha, Hyun-Sup,Choe, Choon-Suck,Kim, Yong-Hee 한국대기환경학회 2007 한국대기환경학회지 Vol.23 No.3
In this study, we have analyzed $PM_{10}$ concentration measured at Incheon Regional Air Monitoring Network (10 stations) and meteorological data at Incheon Weather Station to investigate factors (i.e. wind direction, wind speed, relative humidity, major meteorological phenomenon, and sea-land breezes existence) influencing $PM_{10}$ concentration in Incheon during 2005. Statistical differences among meteorological factors were assessed by Kruskal-Wallis test or Mann-Whitney U test. The main conditions causing high $PM_{10}$ concentration are summarized below; 1. When westerly wind prevailed (however, $PM_{10}$ decreased when winds were blowing from the east or north). 2. When the winds were calm, owing to accumulation of nearby emissions under stagnant conditions, or when the wind speed is in excess of 6 m/s, which shows the effect of fugitive dust produced by wind erosion. 3. Under the condition of high relative humidity and poor diffusion based on meteorological phenomenon such as fog, mist, and haze. 4. When the Sea-Land breezes existed, which occurred 70 days in Incheon during 2005 and contributed significantly to high $PM_{10}$ concentration in the coastal urban area. In conclusion, we have found that the meteorological factors have influence on $PM_{10}$ concentration in Incheon.
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김경애(Kyung-Ae Kim),이병옥(Byeng Ok Lee),김오목(Ou Mok Kim),허명제(Myung Je Hur),김경태(Kyung Tae Kim),노재일(Jae Il Ro),최춘석(Choon Suck Choe),고종명(Jong Myoung Go),김용희(Yong Hee Kim) 대한환경위생공학회 2007 대한환경위생공학회지 Vol.22 No.3
In order to investigate water pollution of spring, we carried out the experiments on mineral water, rainwater and surrounding soil of several springs collected in Incheon area from February to August in 2007. The results were as follows. 1. Soil : This study investigated the pH and organic matter contents in the soil which effect on microorganisms, The pH value was from 4.5 to 5.3 on average and organic matter contents ranged from 1,09 % to 5,6% and E. coli, K. pneumoniae, S.faecalis and other microorganisms were isolated. 2. Natural mineral water : As the rainfall increased, the concentration of No?-N, consumption of KMnO₄ and the number of microorganisms was increased while the other physicochemical items were not affected. The microorganism isolated in the natural mineral water were as follows: E. coli. K. oxytoca S. faecalis, S. facium, and so on from evacuation; E. agglomerans, E. amnigenus, E. cloacae, E. sakazakii and so on from the environments and evacuation. Detection of these microorganisms shows that the environment around the spring had been exposed to excrements of the warm blood animal. 3. Rain : The coliforms in the rain were the identical one detected from the mineral water and the soil. In conclusion the quality of natural mineral water is influenced by rain, resident bacteria of soil and surrounding environment. This study will be the basic data of characteristics of spring in Incheon area and also this result will give useful aids for the efficient control of spring.
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