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대학 도서관 건물 리모델링에 따른 실내공기질 영향 평가
백성옥,박대권,박선영,이여진 한국대기환경학회 2006 한국대기환경학회지 Vol.22 No.6
Recently, there have been a large number of remodeling (or renovation) works in old buildings in urban areas. Compared to new buildings, environmental risk might be more significant in such buildings where remodeling works are going on, since some parts of the building may still be in service for people. This study was carried out to investigate the impacts of remodeling works on the indoor air quality (IAQ) of a large building (a 22 stories university library). Indoor air monitoring was conducted during and after the remodeling works every two weeks for a one year period, and target compounds included BTEX, styrene, TVOC, carbonyl compounds such as formaldehyde and acetaldehyde, CO, CO2, PM10, and PM2.5. Overall, the IAQ appeared to be recovered within two months after the remodeling works. However, in some places, concentrations of formaldehyde, toluene, xylene, and ethylbenzene showed higher levels even after works than those during the works. The results indicate that painting, glues and office furnitures are major sources of aromatic VOCs and formaldehyde. Therefore, in order to decrease the concentrations of toxic VOCs, the use of environmental-friendly building materials is strongly recommended during the remodeling works. In addition, IAQ control and management scheme (for example, baking the inside of the building) should be taken into consideration before reopening the buildings.
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대규모 석유화학산단 대기 중 휘발성유기화합물의 농도분포특성: 대산지역을 대상으로
백성옥,서영교,김종호 한국대기환경학회 2020 한국대기환경학회지 Vol.36 No.1
Ambient air monitoring was performed during the period of May to December 2011 in Daesan area, where large petrochemical industrial complexes are located. The main objective of this study was to investigate the occurrence, ambient concentrations and seasonal variation of volatile organic compounds (VOC) at two sites in the vicinity of the industrial complexes and at a control site. A total of 72 VOC were determined by adsorption sampling and thermal desorption coupled with GC-MS. BTEX (benzene, toluene, ethylbenzene, xylenes), and styrene were detected in all the samples (n=336), while 25 VOC were detected more than 50% of the samples. VOC concentrations at industrial sites were significantly higher that those at the residential site (control site). However, there was no specific pattern of seasonal variations in the VOC concentrations. Average levels in the summer was the lowest among the four season’s averages, being attributed to the South wind during the season. Hexane (1.83 ppb) was the most abundant VOC, followed by toluene (1.50 ppb), ethylacetate (1.11 ppb), benzene (0.77 ppb), styrene (0.66 ppb), m-/p-xylenes (0.58 ppb), and ethylbenzene (0.40 ppb). Analysis of Toxic Release Inventory (TRI) data revealed that VOC, listed as hazardous air pollutants (HAP), emitted from 15 industrial sources, such as petrochemical industries and oil refineries. This study is the first report regarding the comprehensive monitoring of VOC in the ambient air of the Daesan industrial complexes.
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