측정방법별 실내공기 중 폼알데하이드 농도 비교

김영환,손종렬,문경환 高麗大學校 倂設 保健大學 保健科學硏究所 1999 保健科學論集 Vol.25 No.1

This study was conducted to identify suitable methods for measurement of formaldehyde in ambient air at sub-ppm levels. Experiments were designed to compare four different analysis procedures including NIOSH Method No. 3500, NIOSH Method No.2541, EPA Method No. 67 and passive tube method under favorable conditions(laboratory exposure chamber) and in ambient air of the household furniture shops. The results were as follows : 1. Absolute bias by each method were less than 26.8% at the theoretical exposure concentration of 0.21ppm and all methods except the passive method produced precise results at this levels. Use of the NIOSH Method No. 3500 indicated accuracy was approximately 1.5-2.8 times higher than those determined by NIOSH Method No. 2541 and EPA Method No. 67. 2. EPA Method No. 67 had the best precision and accuracy at 0.12ppm level similar to the current regulatory limit for the formaldehyde in ambient air. 3. The amounts of released formaldehyde for household furniture shops were 0.040ppm by NIOSH Method No. 3500. 0.051ppm by NIOSH Method No.2541. 0.054ppm by EPA Method No. 67 and 0.096ppm by passive tube method, respectively. The concentrations indicated by passive tube method were consistently higher than those measured by the other methods. No statistically significant differences of formaldehyde concentrations among ambient air except the passive tube method were found (p<0.05),

THI에 의한 서울시 지하철 역사 근로자의 신체 및 심리적 증상에 관한 연구

손종렬,김선철,변상훈,문경환,김영환 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.2

This paper reports an investigaion for the health status of subway workers in the 67 subway stations in the Seoul area during from September 15th to Nobimber 15th, 2002 . Prevalence of subuective complaints was surveyed of 400 subway workers applied by a general health questionnaire-the Todai Health index(THI). The basic tool employed in this present study was the THI which is modified Comell Medical Index(CMI) and was developed by Tokyo University Research Team in Japan, and had been used to evaluate manufacturing workers, iron workers and other workers by Kim(1979), Chung(1982), Lym(1987), Lee(1996) in Korea. The results were summarized as follows; 1. The physical and psychological complaints were much higher in the 20~29 age group than other age groups. 2. The physical and psychological complaints showed a high tendency of increased incidence in all items as length of service decreased, and the 3~5 years group was higher than less 1 year group with regard to the symptoms of Digestive(C), Aggressiveness(F), Nervousness(E). 3. The physical and psychological complaints showed much higher tendency in the station staff(S?S) group than other groups. 4. The physical and psychological complaints showed much higher tendency in the under station(Un.S) and upper station (Un.S) groups than other groups. 5. The responses of physical and psychological complaints by monthly pay showed much higher tendency in he income of 10.1~1.50 millions won group than other groups. 6. The responses of physical and psychological complaints by smoker or non-smoker showed much higher tendency in the smoker group than non-smoker group. Therefore, it can be concluded that the worker of subway studied was perceived as acceptable the importance of health status, and suggested that the goverment of related subway need to be effort to control the health of subway workers in environment of indoor.

서울 북부지역의 생활폐기물 발생량 및 조성 분석

손종렬,배은상,김영환,문경환 高麗大學校 倂設 保健大學 保健科學硏究所 1998 保健科學論集 Vol.24 No.1

This study was carried out to investigate on the generation and composition of municipal waste in north area of Seoul. The results was as follows: 1. The generation and composition of municipal waste was investigated foods> papers> glasses> plastics> metals(cans)> textiles> leaches> woods> ashes> rubbers> ceramics> leathers in residential area, that was investigated papers> foods> plastics> glasses(bottles)> textiles> metals> ashes> leaches> rubbers> ceramics> leathers in nonresidential area. 2. The recycling generation of municipal waste was investigated papers> glasses> plastics> metals> textiles> woods in residential and nonresidential areas. 3. The three components(water, combustion & ash) was analysed in each composition of municipal waste for the deciding treatment methods of waste in residential and nonresidential areas. The water component of each composition was analysed foods> papers> woods> textiles> rubbers > ashes in residential area, which analysed foods> papers> ashes> woods> textiles> rubbers in nonresidential area. The combustible component was analysed plastics> textiles> woods> rubbers>papers in residential and nonresidential area. The ash component was analysed nonferrous metals> ferrous metals> ceramics> ashes in residential area, that was analysed ceramics> ferrous metals> nonferrous metals> ashes in nonresidential area. Conclusively, in order to treat municipal waste the separated collection system should be systematically performed, the next improvable proposal of the detailed methods should be prepared.

수종의 cytokine이 배양중인 조골세포에 미치는 영향

李鍾烈,高鮮一,金正根 단국대학교 치의학연구소 1995 논문집 Vol.7 No.1

Evidence indicates that cytokines are involved in the initiation and progression of chronic inflammatory diseases. Recent evidence demonstrates major roles of growth factors and cytokines as mediators for bone growth and remodeling. Bone remodeling is a local phenomenon which occurs in discrete packets throughout the skeleton. The cellular events which comprise the remodeling sequence are controlled by cytokines which are generated in the microenvironment of the bone resorbing area. These cytokines are derived from marrow mononuclear cells or from bone cells themselves, or they are incorporated into the bone matrix and released in biologically active form as bone resorb. But evidence is accumulating that some of these cytokines play an important role not just in physiological bone remodeling, but also in common diseases of bone remodeling such as osteoporosis, osteopetrosis, Paget's diseases and malignant diseases which involve bone and chronic inflammatory diseases such as rheumatoid arthritis and periodontal diseases. Also, these cytokines are derived from bone cells themselves, these receptors are present in bone cells. Therefore, this experiment developed a culture of osteoblastic cells from embryonic chicken calvaria to examine the possible role of some cytokine in osteoblast function. This experiment was performed 1) to examine the effect of cytokines on the acid phosphatase activity of chicken osteoblast and 2) to examine the effect of cytokines on the alkaline phosphatase activity of chicken osteoblast and 3) to study the effect of cytokines on the bone nodule formation of chicken osteoblast in long-term cultures. The observed results were as follows. 1. Cytokines and cytokine combination stimulate the release of acid phosphatase into cultured medium in cultures of chicken osteoblast. 2. Cytokines and cytokine combination increase the activity of acid phosphatase of cell extract in cultures of chicken osteoblast. 3. Cytokines and cytokine combination decrease the activity of alkaline phosphatase of cell extract in cultures of chicken osteoblast. 4. Less bone nodules were formed by cytokines than in control group.

수종의 cytokine이 배양중인 조골세포에 미치는 영향

李鐘烈,高鮮一,金正根 단국대학교 치의학연구소 1995 단국대치의학연구소논문집 Vol.7 No.1

CMI와 THI에 의한 서울시내 개인택시 사업장에 근무하는 근로자의 신체적 자각증상에 관한 연구

손종렬,변상훈,김경은,최달웅 대한위생학회 2003 대한환경위생공학회지 Vol.18 No.4

This paper investigated Taxi drivers physical subjective symptoms and what factors were interviewed caused the symptoms. The 600 owning taxi-drivers in Seoul during four months from August 1st, 2003 to November 30th, 2003. 1. The average age of the owning taxi-drivers was generally quite high 54 years old. It was very high index compared with the Todai Health Index(THI) and Cornell Medical Index(CMI) of health check tables. 2. According to the age in THI health check table, the complains of mental subjective symptom by reason of age was high among 31 to 40 years old. People who belonged that age group showed high fabrication(L), digestion(C) and aggressiveness(F). The results showed the complains of mental subjective symptom. All items except tiredness(I), melancholia(N), and hypersensitivity(P) were commonly reported by people in their sixties. On the other hand, melancholia(N) and hypersensitivity(P), people in their forties were investigated highly. Statistically, the items of heart·blood stream(C) and digestion(D) systems were similar between the two ages, but anger(Q) was diferent. (p<0.05) 3. From the complains of mental and physical subjective symptoms about work satisfaction on the THI health check table, all items except eye·skin trouble(B) showed strong dissatisfaction. From the complains of mental and physical subjective symptoms about work satisfaction on the CMI health check table, the items of respiratory system(B), digestion(D), nervous system(G), miscellaneous(K), inadequancy(M), and anger(Q) showed similar results. Otherwise, heart·blood stream(C) showed statistically different. 4. From the complains of mental and physical subjective symptoms on salary satisfaction in the THI health check table, in the case of people receiving around 1 million won, the complains of physical symptoms showed high among all items except for the respiratory(A) and digestion(C) systems. The eye·skin trouble(B) item showed statistical similarity. The complains of mental and physical subjective symptoms according to a salary degiee on the CMI health check table was completely different from the above results. In people received around 1~l.5million won, all items except anxiety(O) showed high. The hypersensitiyity(P) item showed statistically different.

시중에 판매되고 있는 아이스크림의 일반세균 및 대장균군 오염 실태

정다운,김영환,손종렬,변상훈 高麗大學校 倂設 保健大學 保健科學硏究所 2003 保健科學論集 Vol.29 No.1

Ice cream is a vastly consumed food enjoyed by a wide range of people. Therefore, it is easily accessible and amounts to hundreds of its kind. Ice cream is a ready-made food which could be served without undergoing cooking process and thus putting weight on its hygienic condition. And so we set out to conduct some research on the number of E-coli bactria contained in commercially sold ice creams. We applied Lactose broth method along with Desoxycholate agar method which enables us to verify the existence of E-coli bacteria and how much is contained. We focused our research on soft ice creams and aimed to seek out the degree to which they were contaminated by E-coli bacteria. 4 major distributors of soft ice cream out of 5 didn't meet the maximum allowance of E coli bacteria to be found. The number of general bacteria observed per 1 ㎖ of specimen must be held at less than 100,000, and this wasn't violated by any of the companies' samples. Yet on E-coli testing, all of K, L, B and M companies' samples respectively exceeded the permitted limits of bacteria to be detected.

아파트 실내에서 시간 경과에 따른 포름알데히드의 농도 조사

변상훈,김영환,손종렬,문경환 高麗大學校 倂設 保健大學 保健科學硏究所 2002 保健科學論集 Vol.28 No.1

Our communities have been exposed to polluted air. Polluted air could cause the serious injury such as respirational impediment, disease and so on, and the air pollution could be most serious problem in our life. Unfortunately, we didn't have consider these problems seriously, and we had make no solutions for these problems. The new apartment was shown higher concentrations for formaldehyde than the old apartment, that indicated the new apartment environment was more polluted.

일부 수영장 욕수 및 이용객 urine내 Trihalomethane 농도

문경환,손종렬,김영환,변상훈,배은상 高麗大學校 倂設 保健大學 保健科學硏究所 1998 保健科學論集 Vol.24 No.1

Chlorination of swimming pool water leads to many chlorinated products. The most frequent derivative is trihalomethane(THMs). This study was performed to investigate the distribution of THMs in swimming pool water and ambient air, and to determine whether THMs concentrations in swimmers' urine Were influenced significantly after swimming. Water samples were collected from 22 indoor and outdoor swimming pools. Concentrations of THMs in swimmers' urine determined before and after their stay in swimming pools. Results of the study as follows. 1. The concentrations of THMs in the indoor swimming pools water(41.85±73.22㎍/L) were significantly increased(p<0.05) in comparison with that of outdoor swimming pools (10.15±15.45㎍/L). The average concentration of THMs in indoor ambient was 51.2㎍/㎥, which was significantly higher than that of air quality. 2. As a results of regression analysis between THMs and water quality factors, the concentration of pH, residual chlorine and KMnO₄ consumption were highly correlated in indoor swimming pools. 3. In almost all cases, only CHCl₃ was quantifiable. The proportions of THMs in urine correlated roughly with those in water and the secretion of THMs increased significantly after swimming in the pools.

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.