• KIEAE Journal
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• 제9권2호
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• pp.59-64
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• 2009

The senior citizens population and welfare institution for them is increased. The senior citizens in welfare institution spend a long time in indoor and their health is greatly affected by the indoor environment. Therefore, the indoor environment of senior citizens welfare institution is very important. This study presents some primary data based on the survey of architectural conditions and the measurements of indoor air quality for senior citizens welfare institution. According to characteristic of region, six of Incheon Area's senior citizens public welfare institution are selected. An investigation and analysis into architectural conditions and indoor air quality including temperature, humidity, CO, $CO_2$, PM10, HCHO, TVOC are conducted. The temperature, humidity and $CO_2$ concentration is some high. The HCHO concentration is very high. The indoor flooring and furniture materials highly impacts on the concentration of HCHO and TVOC.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제6권9호
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• pp.457-464
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• 2017

실내 공기 품질 측정은 측정 대상 공간의 대기 상태 유지, 외부 변인으로 인한 대기 이상 현상을 검출하려는 방법이다. 실내 공기 품질을 주기적으로 기록하면서 변인에 따른 공기 변화에 특정 패턴이 발생함을 관측할 수 있었으나, 파라미터를 설정하고 계수를 찾아 나가기엔 파라미터의 개수나 그 영향력을 추산하기 어렵고 결과가 시간에 의존적이라는 문제가 있다. 따라서 본 실험은 이것을 공식화하는 대신, 측정 주기마다 추이를 예측하는 관측치 중심의 기계 학습 모델을 개발하는 것을 목표로 한다. 본 논문은 실내 대기 품질을 주기적으로 전송 및 저장하는 측정기의 기록 데이터로 공기 품질 변화를 예측하는 모델을 설명하고 시계열 분석 모델을 구축한다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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• pp.153-154
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• 2018

As the air pollution progresses, the pollution degree of the indoor air quality is increased, and when the pollution degree of the indoor air quality is increased, it causes respiratory diseases and skin diseases. In addition, volatile organic compounds are released from the materials used for architectural interior decoration, and volatile organic compounds are the main cause of polluting indoor air quality. In order to improve indoor air quality, we tried to secure indoor air quality pollution by using photocatalyst which has the function of decomposing harmful substances. photocatalyst is a material that promotes chemical reaction by absorbing light. The photocatalyst used in the experiment was TiO₂, In this study, an adsorption type hardener for reducing volatile organic compounds was prepared by photocatalytic reaction. the formaldehyde and CO₂ concentrations of the cured products were analyzed according to the TiO₂ content.

• 분석과학
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• 제20권6호
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• pp.474-482
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• 2007

보육시설은 미취학전 아이들에게 중요한 실내 환경이며 하루 중 가장 많은 시간을 보내는 영유아들에 잠재적인 유해한 건강영향을 줄 수 있다. 따라서 본 연구는 2006년 2월에서 12월에 걸쳐 서울에 위치한 보육시설 29개 시설을 선정하여 실태조사를 하였다. 측정물질은 휘발성유기화합물 중 7개의 물질(벤젠, 톨루엔, 에틸벤젠, m, p-자일렌, 스틸렌, o-자일렌 및 TVOC)을 선정하였다. 보육시설에서의 TVOC, 톨루엔, m, p-자일렌, 에틸벤젠, 벤젠 그리고 스틸렌의 평균농도는 $318.7{\mu}g/m^3$, $51.6{\mu}g/m^3$, $11.7{\mu}g/m^3$, $6.5{\mu}g/m^3$, $4.2{\mu}g/m^3$, $3.6{\mu}g/m^3$이고, 정성분석된 TVOC 중 톨루엔은 17.6%로 가장 많은 비중을 차지하였다. TVOC와 톨루엔의 실내/실외 농도비는 각각 2.0, 1.6으로 나타났다. TVOCs의 계절에 따른 오염물질의 특성결과는 여름이 $433.9{\mu}g/m^3$로 가장 높게 나타났으며, 다른 계절은 겨울 280.5, 봄 298.3 및 가을 $264.6{\mu}g/m^3$로 비슷한 경향으로 나타났다.

• 한국대기환경학회지
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• 제27권5호
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• pp.569-579
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• 2011

This study evaluated the indoor air quality of 26 government offices located in Seoul. The pollutant samples were taken from Jan. 13th to Jan. 29th and Feb. 20th to Feb. 23rd, 2010 in the offices. The target indoor pollutants for this study were $PM_{10}$, formaldehyde, carbon monoxide, carbon dioxide, total bacteria counts, total volatile organic compounds, radon, nitrogen dioxide, ozone, and asbestos which were controlled by the indoor air quality law for the multiple-use facilities management. The results of this study showed that some pollutants of the 38.5% offices exceeded the standards of the air quality guideline. The correlation analysis of the same pollutants between indoor and outdoor represented that $NO_2$ (r=0.629, p<0.05) and $O_3$ (r=0.459, p<0.01) were significant, however, $PM_{10}$ and CO were not. The correlation analysis between different pollutants showed that CO and TVOC (total volatile organic compounds: r=0.724; p<0.01), CO and $NO_2$ (r=0.674; p<0.01), HCHO and humidity (r=0.605; p<0.01), $CO_2$ and TVOC (r=0.534; p<0.01), TBC (total bacteria counts) and Asbestos (r=0.520; p<0.01) were significant. The energy-saving system of government buildings in winter caused under-ventilated and poor air quality. This study suggests that the concentrations of radon and $CO_2$ should be used as an indicator for monitoring indoor air quality and maintaining effective ventilations.

• 교육시설
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• 제14권1호
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• pp.52-57
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• 2007

Kindergarten children are engaged in the age of physical immaturity as well as the rapid growth. The indoor air contaminants that are proved to affect even the full grown adults are obvious to have no little influence to immature small children in a growth period. In May 2004, for the multi purpose facilities and newly constructed apartments, the Ministry of Environment announced "Indoor Air Quality Control Law for the Multi Purpose Facility," which made the interests to be focused in the urgent understanding of current condition and preparation of measures about the indoor air pollution. In Dec 2005, the law was revised to obligatorily notify the amount of Formaldehyde and Volatile Organic Compounds in the case of newly constructed apartments with more than 100 houses. However, since the kindergarten takes none of the classifications, even the current condition is not grasped although it is directly connected to the health of growing children. Therefore, the study aims to analyze indoor air pollution of one selected kindergarten in Incheon city.

• Journal of Korean Society for Atmospheric Environment
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• 제19권E4호
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• pp.157-168
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• 2003

This study evaluated the technical feasibility of the application of titanium oxide (TiO$_2$) photocatalysis for the removal of VOCs in low ppb concentrations commonly associated with non -occupational indoor air quality issues. A series of experiments were conducted to evaluate four parameters (relative humidity (RH), hydraulic diameter (HD), photocatalytic oxidation (PCO) reactor material (RM), and inlet port size (IPS) of PCO reactor) for the PCO destruction efficiencies of the selected target VOCs. None of the target VOCs presented significant dependency on the RH, which is inconsistent with a few previous studies. However, it is noted that the three parameters (HD, RM and IPS) should be considered for better VOCs removal efficiencies for the application of TiO$_2$ photocatalytic technology for cleansing non -occupational indoor air. The PCO destruction of VOCs at concentrations associated with non-occupational indoor air quality issues can be up to nearly 100％. The amount of CO generated during PCO would be negligible in comparison to the indoor CO levels. These results can make the PCO reactor an important tool in the effort to improve non-occupational indoor air quality.

• 한국통신학회논문지
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• 제40권5호
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• pp.886-891
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• 2015

최근 전 세계적으로 인류의 건강을 위협하는 요소로 대기오염이 대두되고 있는 가운데 세계보건기구(WHO : World Health Organization)의 발표에 의하면 대기오염으로 인해 사람의 건강을 해친다고 발표했으며, 서울시의 '2011~2014년 7월 다중이용시설 실내 공기 질 측정 결과'에 의하면 대부분의 다중이용시설에서 실내공기오염도 기준을 위반한 것으로 조사되었다. 이러한 실내에서 발생하는 대기오염은 폐 질환, 천식, 기관지염 등의 질병을 유발하며 본 논문에서는 이와 관련하여 환경센서를 이용하여 실내공기질을 측정하고, 측정된 데이터를 분석하여 환기 개선에 필요한 액츄에이터 신호를 생성하고 실시간으로 실내 공기 질 측정 모니터링 시스템을 구현하여, 우리 생활에서 대기오염을 자율적으로 관리할 수 있도록 한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1045-1050
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• 2008

The public interest on the indoor air quality of a high-speed train passenger cabin is drastically increasing due to the sealing of cabin. In this study, the concentration of volatile organic compounds and suspended microorganism in the high-speed train passenger cabin was investigated. There have been many studies on the indoor air quality of the high-speed passenger cabin, but the study on the indoor air quality without boarding of passengers were hardly carried out. As a result, it was very difficult to identify the exact source of air pollutants in the cabin. In this study, the indoor air quality of passenger cabin without any passengers was investigated so that the contribution of passengers as the source of various pollutants could be estimated.

• 한국환경보건학회지
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• 제49권3호
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• pp.129-133
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• 2023

Background: With the rise in global mobility, aircraft indoor air quality has become a significant public health concern. This study focuses on the health implications of increased travel and bleed air-air drawn from aircraft engines for cabin pressurization and air conditioning. Objectives: This research aims to review the potential health effects related to exposure to aircraft cabin air, particularly the effects of bleed air during fume events. Methods: We conducted a literature review of existing studies on aircraft cabin air quality. We focused on both the immediate and health effects of exposure to cabin air, particularly those related to bleed air contaminants. Results: The review found a possible link between exposure to aircraft cabin air and certain health issues, especially in cabin crew and frequent flyers. There was an increased incidence of respiratory and neurological symptoms related to bleed air exposure. However, the cumulative health effects of frequent air travel remain inconclusive due to limited data. Conclusions: This study highlights the need for improving air quality in aircraft to protect public health. While further research is needed to understand the cumulative effects of frequent air travel, the reduction of exposure to bleed air contaminants should be a priority. These findings underline the need for regulatory changes and technological improvements in aircraft cabin air quality.