실내환경중의 산소발생기 사용에 대한 인식도 평가

손종렬,조윤수,이규현,황상용 대한위생학회 2003 대한환경위생공학회지 Vol.18 No.4

Recently, Indoor air quality(IAQ) in workplace, residential environments and office has been concern of people, scientists and related the public. The oxygen in air was very important and essential element in every aspect of life. This study was performed on a questionnaire survey of 400 people about their awareness of indoor air quality, oxygen generators and measured of oxygen concentration in indoor environment. The results obtained were as follows; As respondents are having their 90% of daytime indoors a day, and 80% of them can feel indoor air pollutions degrees directly by particle matters. The control of most important problems of IAQ was the poor ventilation. We know that 22% of the respondents was recognized the oxgen generator. And for the installation of indoor pollution control equipment, 20% of all respondents installed oxygen generators because almost respondents was not satified the trust of ability purified indoor air pollutants. In the experimental results, it was found that the oxygen concentration of sampling sites were in the range of 20~23.5%. Therefore, it was recommended that the government related IAQ was suggested the guideline and control of oxygen generators. Finally, it appeared that the oxygen generators using indoor environment can be applied to new technology for cleaning of indoor air.

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.

황사현상시 대기중 충부유분전(TSP)와 TSP중의 중금속 및 무기성 이온 조사 연구

손종렬,정호철,양광수,이용성 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

The study was performed to investigate the influence of dust transportation from China contient to Korea by Yellow Sand phenomena and evaluate the aerosol during the period of Yellow Sand phenomena in Seoul, from Apr. to Oct. 1998. The TSP(Total Suspended Particulates) was collected by High Volume Air Sampler. The concentration of heavy metals in TSP were analysed by AAS and the inorganic ion of TSP were analysed by IC. The results were as follows: 1. The average concentration of TSP were 249.18㎍/㎥ at sampling point during the Yellow Sand phenomena were twice higher than that in Non-Yellow Sand which was 121.98㎍/㎥. 2. The average concentration of heavy metals in TSP during Yellow Sand phenomena and Non-Yellow Sand were Zn>Al>Fe>Pb>Mn>Cr>Ni>Cu>Cd. 3. In comparion with the ordinary time, the average concentration of anionic ions in TSP during Yellow Sand phenomena were Cl^(-)>S0₄^(2)>NO₃^(-)>F^(-)>P0₄>Br^(-), those of Non-Yellow Sand were Cl^(-)>NO₃^(-)>SO₄^(-2)>F^(-)>PO₄^>Br^(-), and that of cationic ions in TSP during Yellow Sand phenomena were Na^(+)>K^(+)>NH₄^(+).

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.

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.

초음파 조사에 의한 슬러지 탈수특성 개량에 관한 연구

손종렬,이용성,유인성 高麗大學校 倂設 保健大學 保健科學硏究所 2001 保健科學論集 Vol.27 No.2

In this study, the series of ultrasonic irradiation for the improvement of sludge dewaterability in sewage treatment plant 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 irradiation time, frequency and instensity of ultrasound. These experiments were performed on the ultrasonic frequency of 28 KHz, 40KHz and ultrasonic intensity of 50 W/㎠ 100W/㎠ And then the tests measured the Specific Resistance to Filtration(SRF), the dissolved solids concentration and Sludge Volume(SV30) in conditions of ultrasound. In experimental results, the dissolved solids concentration of filtrate was increase in proportional to the ultrasonic irradiation time. To the contrary, the SV30 and SRF were reduced in proportional to increase of irradiation time in each experimental conditions. This results meants that the efficiency of sludge dewaterability is due to the ultrasonic effect that changes the structures of sludge. Finally, it appeared that the technology using ultrasonic irradiation can be applied to the pre-treatment of sludges which are difficult to be dehydrated by the conventional methods.

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),

일부 서울지역 실내.외 공기중 휘발성 유기화합물질(VOCs)의 농도조사

정제면,손종렬,유인성,변상훈 高麗大學校 倂設 保健大學 保健科學硏究所 2001 保健科學論集 Vol.27 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. Although the concentration of indoor and outdoor didn't show the high values, VOCs existed in indoor and outdoor environment. The indoor concentration was more higher concentration than the outdoor concentration, that indicated the indoor environment was more polluted. This study showed that the investigation of a continuous environment polluted were needed.

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.

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.