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장성기(Seong-Ki Jang),임정연(Jung-Yeon Lim),이우석(Woo-Suk Lee),서수연(Soo-Yun Seo),임준호(Jun-Ho Lim),박민규(Min-Kyu Park),류정민(Jung-Min Ryu) 한국실내환경학회 2006 한국실내환경학회지 Vol.3 No.3
The purpose of this study is to optimize an emission test method for building materials and to understand the characteristics of total volatile organic compounds (TVOC) and carbonyl compounds emission from building materials, especially solid-phase building materials, using a small chamber test method. As a result of the evaluation for small chamber system, temperature and humidity was maintained constantly at 24.5℃, 50.2%. The background concentration of total volatile organic compounds and formaldehyde were also controlled below 20 ㎍/㎥ and 0.5 ㎍/㎥, respectively. Air leakage of emission test chamber and the duplicate precision between two emission test chambers were satisfied. As a result of evaluation for sampling and analysis system (such as the breakthrough test), repeatability of response factor, and retention time in GC/MS and HPLC, desorption efficiency, method detection limits were excellent. The concentration of total volatile organic compounds emitted from wallpapers (made of PVC) was higher at 25℃ than at 23℃. Also, the concentration of formaldehyde emitted from floorings made from non-PVC (wood-based) was higher at 25℃ than at 23℃. On the other hand, there was not a significant difference between the concentrations of total volatile organic compounds emission from wallpaper (made of PVC) which was stored for 2 weeks at 25℃ and 4℃ with tight sealing. In conclusion, emission characteristics of TVOC and formaldehyde from solid-phase building materials would be expected to apply to the plan for the management of indoor air quality.
소형챔버를 이용한 건축자재의 휘발성유기화합물과 폼알데하이드의 흡착성능에 관한 연구
강윤경(Kang Yoon-Kyung),임정연(Lim Jung-Yeon),장성기(Jang Seong-Ki),이윤규(Lee Yun-Gyu) 대한건축학회 2009 대한건축학회논문집 Vol.25 No.5
In this study, we are investigate for functional building materials such as hygrothermal, adsorption, mold or bacteria growth resistance, an anion emission, far-infrared radiation functional building material in Korea. Also, the performance of sorptive building materials to indoor air pollutant is studied in this paper. The effects of sorptive building materials with respect to reduction of BTEXS(Benzene, Toluene, Ethylbenzene, Xylene, Styrene) mixed gas and formaldehyde concentrations were evaluated during 7days using the small chamber system. A ceiling board(product A) and a wall board(product C) showed decreasing effects of 89% and 92% for formaldehyde, respectively. Also, another wall board(product D) showed decreasing effect of 66% for BTEXS mixed gas. However, another ceiling board(product B) showed no significant decreasing effect.
액상 건축자재의 기간별 TVOC 방출량 특성에 관한 고찰
장성기(Seong-Ki Jang),서수연(Soo-Yun Seo),박현주(Hyun-Ju Park),임정연(Jung-Yeon Lim),임준호(Jun-Ho Lim),이우석(Woo-Suk Lee) 한국실내환경학회 2007 한국실내환경학회지 Vol.4 No.2
In recent years, the number of complaints about indoor air pollution caused by volatile organic compounds(VOCs) has increased. It is important that evaluating and understanding emission of indoor air pollutant from building materials. The aim of this study was to evaluate emission test methods for liquid phase building materials such as paint, adhesive and sealant, and to determine the emission of total volatile organic compounds(TVOC) from liquid phase building material. The quantity of TVOC emission was measured by a gas chromatography/mass spectrometry (GC/MSD). It was found that liquid phase building materials were classified according to their use and ingredient. The TVOC concentration from oil-based paint was the highest among 8 groups of test materials. The unidentified volatile organic compounds occupied 83.0% of TVOC emission from test materials. The aliphatic hydrocarbons and aromatic hydrocarbons occupied 7.2%, 6.9% of TVOC, respectively. The concentration of TVOC decreased by an increase during emission test period. After 3 days, the concentration of TVOC from paint, adhesive and sealant were about half of the concentration at the first day. The ratio of concentration between 7 days and 1 day was 0.11~0.15 from water-based paint and 0.46~0.48 from epoxy adhesive.
거주기간 증가에 따른 신축 공동주택의 실내오염도 변화추이
장성기(Seong Ki Jang),류정민(Jung Min Ryu),서수연(Soo Yun Seo),임정연(Jung Yeon Lim),이우석(Woo Seok Lee) 한국분석과학회 2007 분석과학 Vol.20 No.6
신축공동주택의 실내공기질에 영향을 미치는 휘발성유기화합물 및 카보닐화합물의 농도와 입주후 거주기간에 따른 오염도 변화추이를 파악하고자 입주 후 신축 공동주택 120세대를 대상으로 실내공기 오염도를 조사하였다. 신축 공동주택 입주 후 TVOC (Total Volatile Organic Compounds; TVOCs)평균농도는 688.61 ㎍/㎥으로 나타났으며, 포름알데히드, 톨루엔, m, p-자일렌, 아세톤, 에틸벤젠이 158.56 ㎍/㎥, 146.58 ㎍/㎥, 69.28 ㎍/㎥, 63.80 ㎍/㎥, 29.65 ㎍/㎥의 순으로 높게 나타났다. 또한, 대부분의 실내오염물질들은 입주 후 거주기간이 증가함에 따라 평균농도가 감소하는 경향을 나타내었으나, d-리모넨의 경우 입주 후 2개월에서 10개월까지 지속적으로 증가하는 것으로 나타났다. 또한, 톨루엔, 에틸벤젠, m, p, o-자일렌 등의 주요오염물질이 전체 VOCs에서 차지하는 비율은 38.8%로 나타났으며, 거주기간에 증가함에 따라 구성비율이 감소하는 것으로 나타났다. This study is for investigation of indoor conditions with air contamination after occupation 120 households in brand-new apartments by measuring the concentration of VOCs and carbonyl compounds. It has been found that TVOC (total volatile organic compounds; TVOCs) were 688.61 ㎍/㎥ after moving in. And formaldehyde, toluene, m, p-xylene, acetone and ethylbenzene were 158.56 ㎍/㎥, 146.58 ㎍/㎥, 69.28 ㎍/㎥, 63.80 ㎍/㎥ and 29.65 ㎍/㎥, respectively. The mean concentrations of indoor air pollutants tend to decrease along an increase dwelling period. But, the mean concentration of d-limonene increased from 2 months to 10 months. Also, toluene, ethylbenzene, m, p, o-xylene amounted to 38.8 % among VOCs studied, this ratio tend to decrease along with and increased dwelling period.