• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2002년도 추계학술대회 논문집
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• pp.274-275
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• 2002

일반시민의 생활수준 향상에 따른 자동차의 중가와 각종 산업분야의 산업활동 증가는 대기중 휘발성 유기화합물(Volatile Organic Compounds;이하 VOCs)의 증가를 가져왔다. VOCs는 오존층 파괴 및 지구 온난화 가중, 광화학스모그 생성 등 환경적 측면과 발암성 및 유전독성을 내포하여 인체에 영향을 주는 것으로 알려져 그 중요성이 부각되고 있다. 특히 공단지역의 VOCs 및 악취 둥 오염피해는 90년대 후반부터 규제가 강화되어, 여천과 울산공업단지의 경우 VOCs의 특별대책지역으로 규제되어 있다. (중략)

• 한국산업안전학회:학술대회논문집
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• 한국안전학회 2001년도 공동학술대회
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• pp.263-268
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• 2001

휘발성유기화합물(Volatile Organic Compounds, VOC)은 연소배기가스중의 NOx, SOx와 함께 대기환경오염의 주 요인이 되는 물질로서, 제거방법의 하나로 활성탄 흡착법을 주로 사용한다. 흡착제로서 석탄이나 나무에서 제조된 활성탄(Activated Carbon)을 사용하는데, 활성탄 자체는 폭발하지 않으나 어느 정도 유기증기를 흡착하면 분산상태에서 폭발을 일으키는 것으로 알려져 있다 그러나, 국내에서 활성탄에 대한 연구는 자연발화위험성에 대해서만 연구가 진행되었을 뿐, 휘발성유기화합물이 흡착된 활성탄에 대한 연구는 전무한 상태이다.(중략)

• 한국에너지공학회:학술대회논문집
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• 한국에너지공학회 1999년도 추계 학술발표회 논문집
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• pp.193-196
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• 1999

산업구조가 고도화되고, 인구가 도시로 집중됨에 따라 환경이 급속한 속도로 오염되고 있다. 뿐만 아니라, 쾌적한 환경을 요구하는 사회적 인식이 고조되고 있어 환경오염문제에 대한 대책이 매우 시급한 편이다. 최근 이러한 환경오염물질로 가장 보편적으로 거론되고 있는 것이 휘발성 유기화합물(Volatile Organic Compounds : VOC)이다. VOC는 벤젠, 할로겐 화탄화수소 등을 포함하고 있어 호흡기 질환, 암 등의 질병을 유발시킬 수 있으며, 토양 및 수질의 오염마저 일으키고 있다.(중략)

• KSBB Journal
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• 제17권2호
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• pp.115-120
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• 2002

Biofiltration is a bioprocess treating volatile organic compounds (VOCs) in order to convert the VOCs to harmless products. This review on biofiltration is intended to provide an engineering concept such as removal efficiency, maximum load, elimination capacity and so on. Besides, modeling concept of biofilter is also supplied for designing biofilter system. Quantitative data generated in our research group is shown to explain the engineering concept as well as the modeling idea.

• 환경영향평가
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• 제15권6호
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• pp.417-423
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• 2006

The purification ability of indoor plants for volatile organic compounds was investigated. Philodendron selloum and Spathiphyllum sp. were tested for removal of toluene and trichloroethylene in the artificially contaminated reactor under laboratory conditions. Each plant was placed in right side of the reactor and the TCE and toluene concentration change with time were monitored. In the reactor with Philodendron, the TCE concentrations of left and right sides were compared to examine the removal effects by plant. In the reactor with Spathiphyllum, air was circulated before sampling, and thus average removal effects by plants on target VOC were observed. Both plants showed clear effects on removal of VOCs from contaminated indoor air. The removal efficiency of Philodendron and Spathiphyllum were similar and showed 30 - 46% and 31 - 47% of purification effects, respectively. The results of this study showed that air purification using plants is an effective means of reduction on indoor VOCs concentration level and reduce related health risk though, supplementary purifying aids or proper ventilation were also suggested.

• 한국대기환경학회지
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• 제14권2호
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• pp.95-106
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• 1998

Volatile organic compounds (VOCs) from Ca to C9 were investigated with nine ambient air samples collected in April 26, August 17, 1996 and January 23, 1997 in a Seoul site. On each sampling day, three 2-hr integrated canister samples were collected in early morning, early afternoon and late afternoon, respectively to study temporal . variation of VOCs. Most of VOC species showed diurnal variation with higher concentrations in the early morning and lower concentrations in the afternoon. The concentrations of light alkanes were high, probably due to the emission from liquefied petroleum gas (LPG) and evaporation of gasoline. Especially, the concentration of propane was the highest in the morning samples. The concentrations of propane, ethylene, acetylene, and toluene were prominent in their hydrocarbon groups, respectively. These components were the main source of car exhaust, gasoline evaporization, LPG, or solvent usage.

• 대한환경공학회지
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• 제37권6호
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• pp.380-386
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• 2015

조선소 밀집지역의 휘발성유기화합물 농도의 공간 및 시간적 분포특성을 측정하였으며 이를 기반으로 지역적 특성을 평가하였다. 모든 시료채취지점에서 측정된 주요 휘발성유기화합물은 조선소 내부의 실내도장시설에서 측정된 물질들과 밀접한 연관성을 가지는 것으로 나타나 조선소 내부에서 이루어지는 도장작업이 주변지역의 휘발성유기화합물의 중요한 배출원임을 보여준다. 휘발성유기화합물의 분포를 결정하는 주된 요인들은 시료채취지점과 선박제조 작업장 사이의 거리와 선박제조 작업의 강도인 것으로 나타났다. 모든 시료채취지점에서 일반적인 도시 대기에서 관찰되는 VOCs 농도의 일반적인 시계열적 변화경향을 압도하는 도장작업의 강도에 따라 매우 넓은 범위의 휘발성유기화합물 농도가 관찰되었다.

• 한국산업보건학회지
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• 제29권4호
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• pp.452-463
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• 2019

Objectives: The purpose of this study is to evaluate airborne concentrations of volatile organic compounds(VOCs) during nail art practice by college students. Methods: Personal samples for students were measured using passive samplers(OVM 3500) during three kinds of practice, including polish nail, gel nail and acrylic French sculpture at two universities located in Gyeongsangbuk-do Province. We also monitored area concentrations using active samplers and real-time total VOC monitors(ppbRAE 3000). All samples were analyzed with a gas chromatography flame ionized detector. Statistical analysis for monitored data were conducted using a web-based Bayesian toolkit, EXPOSTATS(www.expostats.ca). Results: Twenty-four personal samples and ten area samples were collected and five chemicals(acetone, butyl acetate, ethyl acetate, ethyl methacrylate(EMA) and methyl methacrylate(MMA)) were detected. Acetone was detected in all personal samples and ranged from 2.58 ppm to 50.3 ppm. EMA was detected in all personal and area samples with a maximum concentration of 9.78 ppm during acrylic French sculpture. Personal exposure levels to acetone, butyl acetate and mixtures were significantly higher with high occupant density (p<0.05). Geometric mean (GM) concentrations of 3.61 ppm for EMA personal samples were significantly higher than that of area samples, 1.5 ppm (p<0.05). Since there was no local ventilation, total VOC concentration continued to increase as the practice progressed. Conclusions: In order to minimize VOCs exposure for trainees, it is necessary to introduce a local ventilation system and maintain adequate occupant density.

• Journal of Biosystems Engineering
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• 제39권2호
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• pp.76-86
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• 2014

Purpose: The objective of this study was to measure emissions of gases (ammonia ($NH_3$), hydrogen sulfide ($H_2S$) and carbon dioxide ($CO_2$)), volatile organic compounds (VOC) and odor from two shallow pit pig nursery rooms. Gas and odor reduction practices for swine operations based on the literature were also discussed. Methods: This study was conducted for 60 days at a commercial swine nursery facility which consisted of four identical rooms with mechanical ventilations. Two rooms (room 1 (R1) and room 2 (R2)) with different pig numbers and ventilation rates were used in this study. The pig manure from both the R1 and R2 were characterized. Indoor/outdoor temperatures, ventilation rates/duration, $NH_3$, $H_2S$, $CO_2$, and VOC concentrations of the ventilation air were measured periodically (3-5 times/week). Odor concentrations of the ventilations were measured two times on two days. Three different types of gas and odor reduction practices (diet control, chemical method, and biological method) were discussed in this study. Results: The volatile solids to total solids ratio (VS/TS) and crude protein (CP) value of pig manure indicated the pig manure had high potential for gas and odor emissions. The $NH_3$, $H_2S$, $CO_2$ and VOC concentrations were measured in the ranges of 1.0-13.3, 0.1-5.7, 1600-3000 and 0.0-1.83 ppm, respectively. The $NH_3$ concentrations were found significantly higher than $H_2S$ concentrations for both rooms. The odor concentrations were measured in the range of $2853-4432OU_E/m^3$. There was significant difference in odor concentrations between the two rooms which was due to difference in pig numbers and ventilation duration. The literature studies showed that simultaneous use of dietary control and biofiltration practices will be more effective and environmentally friendly for gas and odor reductions from pig barns. Conclusions: The gas and odor concentrations measured in the ventilation air from the pig rooms indicate an acute need for using gas and odor mitigation technologies. Adopting diet control and biofiltration practices simultaneously could be the best option for mitigating gas and odor emissions from pig barns.

• 한국대기환경학회지
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• 제20권1호
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• pp.59-68
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• 2004

In this study, we investigated the concentrations of volatile organic compounds (VOC) in the ambient air of a small scale municipal waste landfill site. Seasonal sampling was carried out simultaneously at two sites, i.e. one in the center of the landfill area, and the other at a boundary site. Among 38 target VOC, toluene appeared to be the most dominant compound, followed by benzene. and xylenes. The higher levels of BTX imply that paint -containing materials and/or organic solvents are the most significant sources of the VOC in the landfill environment. Seasonal variations for the samples collected at the landfill site indicated that the VOC concentrations tend to be higher in the spring and fall season and lower in the winter season. In addition, night- time concentrations appeared to be generally higher than day-time. Such daily variation might be due to more stabilized atmosphere during the night-time. Similar patterns were also found in samples collected at a boundary site. This study demonstrated that the municipal landfill, although it is small -scaled, could be an important emission source of atmospheric VOC, particularly in the vicinities of the landfill. Thus, an appropriate control strategy is required to prevent any undesirable secondary pollutions from the environmental sanitary facilities such as landfill.