都市下水중 有機因子의 相互機關에 關한 硏究

黃相容(Sang Yong Hwang),孫鍾烈(Jong Ryeul Sohn),禹完基(Wan Gi Woo) 한국환경보건학회 1990 한국환경보건학회지 Vol.16 No.2

Laboratory methods commonly used today are biochemical oxygen demand. chemical oxygen demand, and total organic carbon. Establishment of constant relationships among the various measures of organic content depends primarily on the nature of the wastewater and its source. Of al1 the measures, the most difficult to correlate to the others is the BODs test. because of the problems associated with biological tests The results were summarized as follwos , 1. For typical municipal wastes, however, the SBODs / SCODcr ratio varies from 0.14 to 0.34(mean 0.21). SBODs / STOC ratio varies from 0.35 to 1.19(mean 0.69) 2. Correlation analysis between the SBODs and SCODcr gave good correlation coefficient r = 0.903 and the equation Y = 3.756X + 16,221 was obtained 3. The correlation between the SBOD5 and STOC was well presented with equation Y = l ,070X + 7,637, and also correlation coefficient r = 0.821 4. The correlation between the SCOD , and STOC was well presented with equation Y = 0.256X+5.513 and also correlation coefficient r = 0.816 5. Becaus안 of the rapidity with which the TOC test can be conducted‘ it is anticipated that more use will be made of these tests in the future

醫療廢棄物의 處理方法과 問題點에 관한 調査

李鎔成(Yong Sung Lee),孫鍾烈(Jong Ryeul Sohn) 고려대학교 보건과학연구소 1994 보건과학논집 Vol.3 No.1

일부 PC방내 니코틴 농도와 호흡성분진(RSP) 입경별 상관성

노영만(Young-Man Roh),김윤신(Yoon-Shin Kim),손종열(Jong-Ryeul Sohn),정재열(Jae-Yeol Chung) 한국실내환경학회 2004 한국실내환경학회지 Vol.1 No.1

The PC game rooms in Korea have a problem in the aspect of indoor air quality because there are many occupants for 24 hours where the smoking is allowed. This study was carried out to evaluate indoor air quality (IAQ) including the size distribution of respirable suspended particulates (RSP) and airborne nicotine concentration in selected PC game rooms. The subjects are 6 PC game rooms in Seoul and Sung-Nam Cities. In this study, airborne RSP and nicotine concentrations were measured during a period from February to March, 2003. Significant correlation has been found between the concentrations of RSP and nicotine in PC game room. Also the negative correlation was found between room area and number of operating fan. The correlation coefficients between RSP size distribution and nicotine concentration were 0.868, 0.866, 0.870 in the stages 2 (cut-point 14.80㎛), 5 (cut-point 3.50㎛), and 8 (cut-point 0.52㎛) from Marple"s 8-stage cascade impactor, respectively. In conclusion, RSP concentration in PC game room has a tendency to increase by smoking. Therefore, it is suggested that the effective air control system and education program be applied for PC game room.

[환경] LC/ESI-MS를 이용한 아미트롤의 정성확인 및 정량분석

박찬구(Chan-Koo Park),어수미(Soo-Mi Eo),김민영(Min-Young Kim),손종열(Jong-Ryeul Sohn),모세영(Sae-Young Mo) 한국분석과학회 2004 분석과학 Vol.17 No.2

우리나라 보육시설의 실내공기질 실태조사 연구

이호영(Lee Ho-Young),성남철(Seong Nam Chul),홍용석(Hong Young-Suk),윤동원(Yoon Dong-Won),손종열(Sohn Jong-Ryeul) 한국건축친환경설비학회 2010 한국건축친환경설비학회 학술발표대회 논문집 Vol.2010 No.10

Indoor Air Quality deterioration due to various environmental causes of disease that has already been identified by many case studies. In particular, children are easily exposed to danger on indoor air contamination. So, the indoor air quality management of the living space of children is very important. However, the indoor air quality management guideline of daycare facilities is insufficient to guarantee the health of children. The purpose of this study, child day-care facilities in 73 locations in the metropolitan area, indoor air quality survey and analysis to identify the status and aims to provide data to improve IAQ. As a result, 47 percent of facilities in the mechanical ventilation systems and air cleaners were installed. Known only to 26% for indoor air quality by responding to the survey that appeared to be a lack of awareness. as the following measuring result, contaminant of concentrations of the measured facilities are against the regulations which CO2 by 29%, PM10 by 42%, TVOC by 19%, HCHO by 6% and 37% for TBC was measured. Therefore, indoor air quality in child care through the improvement of the active response and sustained efforts are required.

超音波 照射에 의한 水중의 Phenol 分解處理

孫鍾烈 高麗大學校 倂設 保健大學 保健科學硏究所 1997 保健科學論集 Vol.23 No.1

Phenol is the most common and abundant pollutants in the refractory substances and this is difficult to be degradable by conventional methods. Therefore, a considerable interest has been devoted to developing new process where phenol can be easily decomposed. In this study, the series of ultrasonic irradiation for removal of phenol has been selected as a model reaction in the batch reactor system in order to obtain the basic data investigate the influence of various experimental parameters such as concentration, pH, reaction temperature, acoustic intensity. The products obtained from the ultrasonic irradiation were analysed by GC/MS and UV spectroscopy. The formation of H₂O₂, a well-known the strong oxidant was found proportionally to increase with irradiation time. The intermediates of ultrasonic irradiation of phenol were identified as H₂, CO₂, Catechol, Hydroquinone, and p-Benzoquinone. As the decomposition of phenol proceeds by the ultrasonic irradiation, the pH of phenol containing aqueous solution increases slowly. The decomposition of phenol was found to be occured fast in the basic medium. In general, the rate of reaction is proportional to the reaction temperature obeying the Arrhenius' law. However, in the ultrasonic irradiation, this suggests as the reaction temperature increase the decomposition rate of the reactant decreases. This result meant that the increase of reaction temperature due to the increase of vapor pressure of water accelerated the decrease of acoustic intensity which was can be proportional to the decomposition rate of these compounds. It was found that more than 80% of phenol solution was removed within 2 hours in all reaction conditions. The reaction order in the degradation of the phenol confounds was verified as the pseudo-first order. From the fore-mentioned results, it can be concluded that the refractory organic compounds as phenol could be removed by the ultrasonic irradiation with radicals, such as H· and OH·radical causing the high increase of pressure and temperature. Finally, it appeared that the technology using ultrasonic irradiation can be applied to the treatment of refractory substances which are difficult to be decomposed by the conventional methods.

발생원별에 따른 PAHs 배출특성

박찬구,윤중섭,김민영,손종열,모세영 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.3

The results of individual PAH source profiles that can be applied to receptor model are as follows. The sum of 16 PAH concentrations was 391.41 ng/S㎥ in a tunnel. Phenanthrene was the most abundant compound among 16 PAH, and then pyrene, fIuoranthene, anthracene, and naphthalene can be seen in elevated contents. 11,056.61 ng/S㎥ of 16 PAH concentrations in BC oil boiler was two times higher than 6,582.57 ng/S㎥ of those in LNG boiler. Naphthalene was the most abundant compound in both facilities. Phenanthrene, anthracene. and acenaphthylene were the second dominant compound group in order from both facilities. BC oil boiler had relatively high concentration of pyrene compared to LNG boiler that had high concentration of fluorene and did not detect pyrene. The sum of 16 PAH concentrations emitted from MSW incinerators after APCD (air pollution control device) was three times higher than those from MSW incinerators bcfore APCD. However, the concentrations of more than 4-ring PAH compounds (e.g., benzo (a)anthracene) before APCD were higher than those after APCD. This fact implies that PAHs generated by combustion process are eliminated in APCD and they are continuously produced in stack or atmosphere by PAHs precursors.

醫療廢棄物의 處理方法과 問題點에 관한 調査

李鎔成,孫鍾烈 高麗大學校 倂設 保健大學 保健科學硏究所 1994 보건과학 학술 세미나 Vol.- No.2

The purpose of this paper is to investigate the generation rate, treatment and the problems of medical wastes based on the papers, government published magazines and concerned with books and papers. The results were as follows : 1. The generation rate of infectious waste in 1993 was 5,201ton/year and then the syringe and gauze was 4,990ton/year(94%). the tissues of patients was 311ton/year(6%). And the figure has been increased about 19.5% in a year in comparison with about 3.9% in U.S.A. This result was about 5times as high as that of a foreign country. 2. The range of infectious waste was accurately determined on the medical wastes and then the separating collection of this wastes had been conducted in regular. It was important that the sources of infectious waste was detailedly investigated. 3. The treatment methods of medical wastes were mainly incineration and the other those were recycling and landfill. The medical waste generated in hospitals (about 60%) was treated in the offsite incineration under contract by private companies and the rest of those (about 40%) was treated in the own incineration of hospitals. But this facilities were unsuitable on the teatment of infectious waste in aspect of air pollution protection. 4. In the point of problems in medical for the protection of infection from the medical wastes, the separated basket for infectious waste should be prepared, the BHS and double package should be used in hospital. 5. Above all, it was important was that the management and control system of medical wastes should be improved in hospital management. For example, the manifest system for the management of medical wastes was reguired.

醫療廢棄物의 處理方法과 問題點에 관한 調査

李鎔成,孫鍾烈 高麗大學校 倂設 保健大學 保健科學硏究所 1994 保建科學硏究論集 Vol.3 No.1

The purpose of this paper is to investigate the generation rate, treatment and the problems of medical wastes based on the papers, government published magazines and concerned with books and papers. The results were as follow : 1. The generation rate of infectious waste in 1993 was 5,201ton/year and then the syringe and gauze was 4,990ton/year(94%), the tissues of patients was 311ton/year(6%). And the figure has been increased about 19.5% in a year in comparison with about 3.9% in U.S.A. This result was about 5times as high as that of a foreign country. 2. The range of infectious waste was accurately determined on the medical wastes and then the separating collection of this wastes had been conducted in regular. It was important that the sources of infectious waste was detailedly investigated. 3. The treatment Methods of medical wastes was mainly incineration and the other those were recycling and landfill. The medical waste generated inhospitals (about 60? was treated in the offsite incineration under contract by private companies and the rest of those (about 40%) was treated in the own incineration of hospitals. But this facilities were unsuitable on the teataent of infectious waste in aspect of air pollution protection. 4. In the point of problem in medical for the protection of infection from the medical wastes, the separated basket for infectious waste should be prepared, the BHS and double package should be used in hospital. 5. Above all, it was important was that the manageaent and control system of medical wastes should be improved in hospital management. For example, the manifest system for the manageaent of medical wastes was reguired.