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화학 및 천연페인트에서 발생되는 TVOCs의 방출강도 특성 연구
김신도(Shin Do Kim),김정호(Jeong Ho Kim),박진수(Jin Soo Park),이정주(Jeong Joo Lee) 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.5
Building materials are composed of very complex chemical compounds, and these indoor building materials discharge very much Volatile Organic Compounds(VOCs). We performed the environmental chamber test to investigate the Total VOCs(TVOCs) emission characteristics and emission factors about chemical and natural coating materials. As the result, we concluded that TVOCs emission are high at initial time and decreased in course of time. Natural paint was low emission level for TVOCs than chemical paint by small chamber test. The TVOCs emission factor-time profile showed a good fit with the results from the measured and predicted value.
신축아파트의 카보닐화합물(Carbonyls)의 농도분포 특성
김신도(Kim Shin-Do),김창환(Kim Chang-Hwan) 한국건축친환경설비학회 2008 한국건축친환경설비학회 논문집 Vol.2 No.3
Due to the increasing need for the office supplies and the building materials, the emissions of various carbonyl compounds occur in the indoor environment, In this study, we investigated the emission characteristics of carbonyl compounds indoor environment with a major emphasis on formaldehyde, acetaldehyde, and acrolein. In order to understand the distribution characteristics of these carbonyl compounds, measurements were undertaken for three months (April to June 2007) to cover a total of 60 newly built apartments (i.e, ones built less than three months). The concentrations of formaldehyde, acetaldehyde, and acrolein measured during the entire study period averaged as 231 ± 164, 60.3 ± 28.9, and 7.8 ± 10.9 ㎍ m 3, respectively (N = 60). Evaluation of threshold limit values (TLVs : TLV of a chemical substance defines the reasonable level to which a worker can be exposed without adverse health effects. Strictly speaking, TLV is a reserved term of the American Conference of Governmental Industrial Hygienists (ACGIH)) indicates that formaldehyde and acetaldehyde data exceeded the allowable values by 43 and 58 percent, respectively. In the case of total carbonyl compounds, 95 percent of the data exceeded the allowable TLV values.
Characteristics of TVOCs Emissions in New Apartment Buildings : 신축아파트에서 발생하는 TVOC의 방출특성
Shin-Do Kim(김신도),Jeong-Ho Kim(김정호),Jin-Soo Park(박진수),Jeong-Joo Lee(이정주) 한국실내환경학회 2006 한국실내환경학회지 Vol.3 No.2
건축자재는 복잡한 화학물질로 구성되어 있다. 본 연구에서는 신축아파트에서 방출되는 TVOCs(Toatal Volatile Organic Compounds)의 농도를 조사하고, 75일 동안의 방출량 변화특성을 조사하는 것이다. 조사결과 신축 건물의 초기 5일동안의 TVOCs 평균농도 값은 3.768㎍/㎥ 이었다. VOCs에 포함된 주요물질은 톨루엔(toluene), 에틸벤젠(ethylbenzene), m,p-자이렌(m,p-xyene)이었다. 조사된 벤젠(benzene)의 농도는 58㎍/㎥, 톨루엔은 793㎍/㎥, 에틸벤젠 438㎍/㎥, 스틸렌(styrene) 79㎍/㎥, m,p-자이렌 1,210㎍/㎥, o-자이렌 364㎍/㎥을 각각 나타내고 있었다. 이러한 결과는 신축건물로부터 방출되는 주요 VOCs(Volatile Organic Compounds)는 다환족 탄화수소(aromatic hydrocarbon compounds)계열의 재료를 사용하는 건축자재의 영향을 가장 많이 받는 것을 나타낸다. TVOCs 방출강도는 초기에 12,856㎍/㎥으로 매우 높은 수준을 나타내었으며, 이후 시간의 감소에 따라 감소하였다. 조사 대상 주택의 75일 이후 TVOCs 농도는 초기 방출강도의 1/20 수준으로 감소하였다. TVOCs의 방출특성은 건자재 내의 VOCs 농도와 발생과정에 영향을 받는 것으로 판단된다. 건자재 내부에 포함된 VOCs는 느리고 지속적인 과정을 걸쳐 실내로 방출되며, 시간 경과에 따라 저농도를 오랫 동안 서서히 방출하며 감쇄한다. Building materials are composed of very complex chemical compounds. The aims of this paper are to investigate the emission concentrations of indoor pollutants from new apartment house and the emission variation patterns during 75 days. The average value of total volatile organic compounds(TVOCs) concentration was 3,768 ㎍/㎥ in five new apartments. Major VOCs included toluene, ethylbenzene, m,p-xylene and o-xylene. The average concentrations of each compound were measured as : benzene(58㎍/㎥), toluene (793㎍/㎥), ethylbenzene(438㎍/㎥), styrene(79㎍/㎥), m,p-xylene(1,210㎍/㎥), o-xylene(364㎍/㎥). The results indicated that the major VOCs from the new apartment were affected by building products such as on aromatic hydrocarbon compounds. TVOCs emission are characterized as high emission level at initial time (12,856㎍/㎥) and decreased through time. After a lapse of 75 days in sample house, TVOCs concentration decreased in about 20 times as compared with the initial concentration. The TVOCs emission profiles strongly depended on the generation mode and the concentration of the VOCs in building material.