• Journal of Korean Society for Atmospheric Environment
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• v.5 no.1
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• pp.79-87
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• 1989

In order to reduce the smoke emission from the in-service city bus, this study was evaluated the particulate reduction efficiency and regeneration ability of the catalitic trap oxidizer (CTO) on the city bus (D0846HM engine) equipped with it. Before the on-road CTO test, the laboratory test of CTO on engine test-bench was performed. Reduction efficiencies of smokes and particulates were 54 and 45%, and those of gaseous pollutants such as carbon monoxide (CO) and hydrocarbons (HC) were 90 and 60%. In order to evaluate the regeneration ability of the CTO by the catalytic oxidation of trapped particulate, field test was performed on the in-service road. The regeneration temperature was 350$^\circ$ which was same with the exhaust temperature of city bus.

• Journal of Preventive Medicine and Public Health
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• v.32 no.4
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• pp.473-481
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• 1999

Objectives: In recent days, the problem of odor pollution in community near Sihwa Industrial complex, Kynuggi Province is becoming of significant public concern. We have investigated the health effects of the Sihwa residents from odor pollution comparing with other less polluted areas. Methods: The Ansan and Kuri Cities were selected as control areas. The parents of the elementary and middle school students in these three areas were surveyed with structured questionnaire twice, Nov 1997 and Jure 1998 each. As a exposure index, the ambient air concentrations of five major air pollutants(particulates, $O_3,\;SO_2,\;NO_2$, CO) and subjective odor perception were used. We have focused health outcomes such as the prevalence of nonspecific irritant symptoms, respiratory disease among family members and the score of qualify of life(QOL). Results: Although the mean concentrations of major air pollutants except particulates were similar or lower in Sihwa than other areas, the odor perception rate and the monthly odor perception days were significantly higher. It suggested that odor producing chemical compounds are the major source of environmental pollution problem. There were higher prevalence rates of nonspecific irritant symptoms and respiratory disease among family members in Sihwa than other control areas. The QOL score was also lower in Sihwa. The odor perception proved to be a most important factor in reporting adverse health effects and lowering the QOL score. Conclusion: The residents living near Sihwa industrial complex were suffering from more adverse health symptoms and poorer QOL status than control areas. And it may be due to environmental odor pollution from industrial complex. Therefore, further research will be needed for monitoring of the responsible chemicals emitted from industries.

• Asian Journal of Atmospheric Environment
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• v.3 no.1
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• pp.52-58
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• 2009

Airborne particulates were collected in three different size fractions (>7 ${\mu}m$; 2.1-7 ${\mu}m$; < 2.1 ${\mu}m$) by using Andersen low-volume air samplers at three sites in Tieling city, Liaoning Province, a typical local city in northeast China, in every season during the period from July 2003 to May 2004. Nine polycyclic aromatic hydrocarbons (PAHs) and seven nitropolycyclic aromatic hydrocarbons (NPAHs) in the airborne particulates were determined by HPLC with fluorescence and chemiluminescence detection, respectively. The mean total concentrations of the nine PAHs and seven NPAHs were highest at The mixed residential and light industrial site, and lowest at the residential site near the suburbs. At all sites, more than 70% of the total PAHs and more than 60% of the total NPAHs were found in the finest particulate (< 2.1 ${\mu}m$) fraction. Both cluster analysis and several diagnostic ratios showed that the major contributors of PAHs and NPAHs in airborne particulates were coal combustion systems such as domestic stoves and coal boilers in all seasons in Tieling city.

• Proceedings of the SAREK Conference
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• 2008.11a
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• pp.541-545
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• 2008

Particulate matter (PM) is one of the major indoor air pollutants especially in the subway station in Korea. In order to remove PM in the subway station, several kinds of PM removal system such as roll-filter, auto-washable air filter, demister, and electrostatic precipitator re used in the air handling unit (AHU) of subway station. However, those systems are faced to operation and maintenance problems since the filter-regeneration unit consisting of electrical or water jet parts is malfunctioned due to the high load of particulates and the filter material needs periodic replacement. In this study, we surveyed the particle removal systems in order to develop the new system of particle removing can be adopted in the current AHU of subway station.

• 대한예방의학회:학술대회논문집
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• 1995.10a
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• pp.309-310
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• 1995

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.299-300
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• 1999

서울의 지하철은 하루 450만 명이 이용하는 중요한 대중교통수단임에도 불구하고 역구내의 먼지에 대한 단순 측정ㆍ분석만이 이뤄지고 있을 뿐 그 먼지의 생물학적 영향에 대한 연구는 미흡한 실정이다. 본 연구에서는 지하철역 구내에서 포집한 먼지가 돌연변이원을 함유하고 있는 지를 평가하였다. 신촌역 지하철입구, 대합실, 승강장에서 포집한 총부유분진 (TSP; total suspended particulates)을 용매에 용출시켜 공시재료로 사용하였다.(중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.11a
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• pp.211-212
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• 2003

지금까지는 주로 대기질 기준을 근거로 24시간 평균 TSP(total suspended particulates), PM$_{10}$, PM$_{2.5}$를 측정하여 왔다. 대기 에어로졸의 농도나 입경분포에 영향을 미치는 배출량, 기온, 상대습도, 풍향, 풍속, 혼합고 등이 12~24시간 이내의 스케일로 변한다(Shen et al., 2002). 그러므로, 대기 에어로졸의 일변화 특성을 파악하기 위하여 실험실에서 사용되던 실시간 에어로졸 입경분포 측정기가 대기 에어로졸 모니터링에 활용되고 있으며(배귀남 등, 2003; Woo et at., 2001; Laitinen et al., 1996), 최근에는 대기 에어로졸을 모니터링을 목적으로 개발된 제품이 시판되고 있다.(중략)략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.434-435
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• 2000

SCR 공정은 고정원에서 발생하는 질소 화합물을 90% 이상 제거할 수 있는 방법으로 현재로서는 기술성, 경제성 및 법규제치의 만족이라는 측면에서 NOx 제거를 위한 BACT(Best Available Control Technology)로 인식되고 있다. 하지만 먼지를 포함한 배가스는 전처리를 해야하는 한계가 있다$^{3)}$ . 이에 본 연구에서는 이미 확인된 고효율의 CuO 담지 섬유형 세라믹 필터를 이용하여 먼지 주입에 따른 NOx 제거실험을 수행하였다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.04a
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• pp.361-363
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• 2000

디젤 자동차는 가솔린 자동차에 비하여 연료소비효율이 높고, 경제성이 좋으며 고출력을 낼 수 있어 이에 대한 수요가 증가하고 있지만, 디젤엔진에서 배출되는 매연과 가스로 인한 오염도 심각한 수준에 달하였다. 엔진의 전자화, 고압분사기술등 여러 자동차 관련기술의 발달로 배출오염물질의 저감에 큰 발전을 이루어 왔으나, 계속적으로 강화되어지는 배출규제에 맞추기 위해서는 입자상 물질 후처리 장치의 개발이 가장 현실적인 대안으로 제기되고 있다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.271-272
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• 2001

일반적으로 노동의 주무대인 작업장의 작업환경은 주거실내환경과는 다르다. 작업장에서는 유해물질을 다량으로 사용하거나 농축된 상태로 사용하므로 납과 수은, 카드뮴, 먼지 등 발암물질이나 인체에 유해한 물질에 노출이 용이함으로서 근로자들의 건강을 크게 위협하고 있다(김, 1999). 노동자는 작업환경에서 발암물질과 유해물질이 포함된 각종 먼지를 흡입하기 때문에 폐에 섬유증식을 일으키거나 폐기능을 저하시키는 직업병을 겪기도 한다. (중략)