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우세홍(Se.Hong WOO),김선덕(Sun.Duek Kim),주대수(Dae.Soo Chu) 한국환경보건학회 1974 한국환경보건학회지 Vol.1 No.1
Acidic substances contained in asphalt are affect upon emulsitiabiJity of asphalt and its adhesion with aggregates, and therfore, detemination of acidity of asphalt is of important one. However, there has not been established a method of precisely determining the acidity of asphalt. This paper reports on an improved color.indicator titration method, by which the acid number 。f asphalt is determined. By treating beI).zene solution of asphalt with alcohol, acidic constituents were selectively eXtracted into alcohol solution, while asphaltic matters precipitated. A color-indicator titration method then was applied to the resultant faint.colored solution. The change of color at end point was clearly observed, and the results were obtained with g∞d reproductivity and checked wel1 with the results by the I. P. 177164 method. Alcohols having not more than three cabon atoms have been found suitable for extraction.
Thin-Layer Chromatography 에 依한 市眼알사탕類의 置色料에 關한 考察
具聖會(Sung Hoi Koo),禹世泓(Se Hong Woo),韓良一(Yang Il Han),李盛鎬(Sung Ho Lee) 한국환경보건학회 1974 한국환경보건학회지 Vol.1 No.1
A study was carried out to detect of illegal artificial dyes, and to confirm the used rate of illegal dyes in the production process of commercial drops (candy), from Dec. 10, 1972 to Feb. 10, 1973. 1n this study, it was used thin layer chromatography, the samples were divided into two groups, .group A of inscribed trade name and group B of not inscribed trade name. To contrast with group A and group B, 100 samples were randomly collected in the market places, 50 sampl~s from group A and 50 samples from group B. The following conclusions were obtained: 1) used rate of ilIegal dyes were 2% of group A and 9% of group B. 2) used rate of illegal dyes were 2 % of red, 2% of yellow, 1% of violet and 6% of green, not in blue. 3) used rate of iIIegal dyes 3% of Rhodamine B, 3% of Auramine and 6% of Light green S.F. Yellowish. 4) Out of 20 cases those used mixed dyes, only one case was confirmed as two iIIegal dyes, and 4 cases were used one i1Iegal dye.
2-MethoxY-5-Nitrophenol 금속착염의 화학적 성질에 관한 연구
김선덕(Sun-Duek Kim),우세홍(Se-Hong Woo),김명운(Myung-Woon Kim) 한국환경보건학회 1974 한국환경보건학회지 Vol.1 No.1
This work was carried out to investigate the chemical properties of the chelate compounds which were produced with 2-methoxY-5-nitrophenoI(MNG) and metal salt such as copper nitrate and manganese nitrate. And obtained results were as in the followings. 1) The binding ratio of the chelate compounds formation were determined by using the molar ratio concentration method and their chemical structures were identified by 1R-spectrum. 2) 1n the absorbance measuring, 2-methoxy-5-nitrophenoI coordinated with manganese and copper showed the maximum absorbance at 430 mμ and 410 mμ respectively. 3) The binding ratio of chelated compounds were measured by mo\ar ratio method and continuous variation method with spectrophotometer, which was identified as 1 : 2. 4) The conditional formation constant(log Kn value) of manganese and copper chelate compounds were 6.70, 6.75, respectively according to the equation of AMm MNG-A log-Ä=--Ä M~-~ MN-G n Iog (Mo)+Iog Kn 5) The dissociations degree of manganese and copper chelate compound were 2, 300 X 10-7, 2, 346 X 10-7 respectively according to the molar caIculation method.
우세홍,김남천,이형춘 서울保健大學 1989 論文集 Vol.9 No.1
The synthesis wastewater containing high concentration of chloride ion(Cl^(-)) was treated with sludge returned complete mixing activated sludge process. 1. At Cl^(-) concentration of less than 10,413㎎/l, BOD removal efficiency was more than 90% and COD removal efficiency was more than 80%. The formation and the settlibility of the floc were poor. 2. At Cl^(-) concentration of less than 5,146mg/l, the oxygen uptake rate was decreased to 38.3~84.6㎎O_(2)/l. hr and ㎏ O_(2)/㎏.BODrem was 0.8~1.427. The oxygen uptake rate was decreased at Cl^(-) concentration of more than 5,146㎎/l. 3. Substract removal rate constant (Km) was 1.02 ~ 3.0/hr at Cl^(-) concentration of less than 5,l46㎎/l and was consisderably decreased at Cl^(-) concentration of more than 5,146㎎/l.
홍상표,구성회,우세홍,김을환,최한영 서울보건대학 1997 서울보건대학 부설 한국보건과학연구소 논문집 Vol.4 No.1
LHR(Landfill Site Hazard Ranking Model)was developed for assessing the relative hazard of landfill sites by using the method of value-structured approach. LHR consists of combining a multiattribute decision-making method with a qualitative risk assessment approach. AHP(Analytic Hierarchy Process)based on the pairwise comparison method was applied to determine weights of landfill site factors related. To determine the relative hazard of landfill sites evaluated, hydrogeological factors, waste characteristics factors and recptors factors were evaluated by LHR. LHR can help decision-makers prioritization of remediation of landfill sites through the relatively convenient and concise evaluation metl10d of landfill site features related. LHR focuses mainly on pathways of groundwater and surfacewater for evaluating landfill hazard to receptors including humans. To validiate the applicability of LHR, Nanjido Landfill site, Metropolitan Landfill site, and Hwasung Landfill site were evalulated. LHR scores of the above-mentioned landfills were 55, 19, and 7 respectively.
飮食物쓰레기의 再活用에 관한 硏究(Ⅰ) : 家築飼料로서
우세홍,김남천 서울保健大學 1993 論文集 Vol.13 No.1
The purpose of this study is to analyze the feasibility of garbage fermentation for stock feed and soil conditioners. The results are epitomized as follows ; 1. In Korea. the generation of garbage increased rapidly as much as 15.2%/year during A. D. 1985-1991. 2. The quantity of garbage generation in household is 0.64kg/capita. day, and in general hospital is 0.94kg/capita day. 3. The quantity of garbage generation per day is 26,311 ton. which consists of household garbage(42.3%). mass feeding facilities and eating houses(57.7%). 4. The garbage not containing toxious impurities can be used satisfactorily as a supplementary stock feed, if it is treated by the high-speed fermentation equipment. 5. In the case of not utilizing the fermented garbage as a supplementary stock feed. then we can apply this products as a soil conditioner. 6. The extensive propagation of on-site recycling garbage has the effects. which are the lengthening of span of life of landfill as well as source reduction.
우세홍,김선덕 서울保健大學 1981 論文集 Vol.1 No.1
옹기제조시의 소성온도에 따른 중금속의 용출량과 용출조건에 따른 중금속의 용출량을 비교 검토한 결과 다음과 같은 결론을 얻었다. 1) 藥土의 주광물질은 sericite이다. 2) 소성온도가 900℃일 때 납의 용출이 0.15~31.23ppm으로 가장 많았다. 3) 소성온도가 1400℃일 때 납의 용출량은 허용량 이하이었다. 4) 소성온도가 1200℃이상일 때 카드뮴은 용출이 방지되었다. 5) 용출조건에 따라서는 중금속의 용출량은 큰 차이가 없었다. This study was carried out to investigate the relations between the firing temperatures and the amounts of extracted lead and cadminium when enthenware is being made. As the results of this study, the following conclusions were obtained. 1) Clay used for glaze was composed of sericite, α-quarts and feldspar. 2) Great quantity of lead was extracted when earthenware was being made at 900℃. 3) The amount of extracted lead was below the acceptable level in making earthenware at 1400℃. 4) Cadminium was not leached out in making earthenware at 1200℃ and higher temperature. 5) The amount of extracted heavy metals from earthenware was affected not so much by leaching conditions as by firing temperatures.