겨울철 주택내 유기화합물 공기오염농도에 관한 측정연구 : 서울시내 96채의 주택을 대상으로 In case of 96 houses in Seoul = Measurement Study on Indoor Organic Compounds Air Pollution in Winter

다국어 초록 (Multilingual Abstract)

Measurements on indoor organic compounds air pollution level in 96 houses were conducted. Houses which measurement carried out were collected based on the survey results about house type and constructed year in Seoul city. Indoor air organic compounds were monitored with two diffusive samplers. One was a cartridge treated with 2,4-initrophenylhydrazine for aldehydes sampling. The other was a passive charcoal tube for VOCs sampling. Two samplers were simultaneously exposed in living room during 24 hours. Aldehydes extracted with 2ml acetonitrile from the cartridge were analyzed by HPLC equipped with an UV diode array detector. VOCs were extracted with 2ml carbon disulfide from the charcoal tube by shaking and then analyzed by chromatograph and mass selective detector. The main Results were as follows;
1) Formaldehyde were detected in more than 90% of all homes, and average value of detected level was 54.92ppb. This alue is lower than ASHRAE guideline (100ppb) and WHO guideline (80ppb).
2) Toluene were detected in all homes, and EthylAcetate, 1-Butanol, ethylbenzene, p-Xylene, D-limonen were detected more
than 50% of all homes. 24 hours averaged level of sum of VOCs was 179.96㎍/㎥, and this value is lower than WHO‘s TVOC(Total Volatile Organic Compounds) guideline (300㎍/㎥).
3) Mostly frequent detective level of formaldehyde was between 50-60㎍/㎥, and 84.09% of all homes showed lower level than WHO guideline.
4) Mostly frequent detective level of sum of VOCs was between 100-150㎍/㎥, and 86.46% of all homes showed lower level than WHO's TVOCs guideline.