• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2002년도 춘계학술대회 논문집
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• pp.227-228
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• 2002

대기오염물질 중 입자상물질(particulate matter, PM)의 크기분포 측정은 주로 다단임팩터(cascade impactor)에 의해 이루어지고 있다. 임팩터 각 단에 포집된 입자의 무게를 측정하여 입자상물질의 크기 분포로 환산하는 다단임팩터는 입자의 샘플링에 많은 시간이 소모되며 필터의 전처리 및 무게측정과정이 번거롭고, 시간에 따른 농도분포의 추이를 파악할 수 없는 단점이 있다. (중략)

• Asian Journal of Atmospheric Environment
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• 제2권1호
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• pp.68-74
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• 2008

We briefly show the results of indoor and personal $PM_{2.5}$ measurements in an epidemiologic study designed to evaluate the health risks of ambient $PM_{2.5}$ in Japan and the relationship between indoor and outdoor PM concentrations. The impact of indoor and outdoor PM pollution on health is described based on one morbidity study. The results of other studies on indoor $PM_{2.5}$ measurements are also described.

• 한국분무공학회지
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• 제21권4호
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• pp.223-236
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• 2016

On-road source emissions are major air pollutants and have been associated with serious health effects in Seoul metropolis. Thus, it is of fundamental importance to have an accurate assessment of vehicle emissions in order to implement an effective air quality management policy. As a result, there is a need to overview vehicle emission characteristics of air pollutants. This article discusses vehicle exhaust sampling and chemical analysis, emission characteristics of air pollutants, and emission regulations from passenger cars. The vehicle exhaust sampling and chemical analysis methods were described in particulate matter and gaseous compounds. In this article, chassis dynamometer, measurement instrumentation for nano-particulate matter and carbon compounds analysis device were described. For the gasoline and diesel vehicles, the effective parameters of emissions were average vehicle speed, vehicle mileage and model year. The particle number emissions for diesel nano-particles were sensitive to the sampling conditions. Also, the particle number emissions with a diesel particle filter (DPF) largely reduced rather than those without it. This article also describes different emission characteristics of air pollutants according to biodiesel or bioethanol mixing ratio. The Korean emission standards for passenger cars were compared with those of the US and EU. Finally, the objective is to give an overview of relevant background information on emission characteristics of air pollutants from passenger cars in Korea.

• 한국태양에너지학회 논문집
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• 제39권4호
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• pp.55-67
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• 2019

Recently, as the amount of particulate matter blowing from China increases, the domestic air environment is rapidly deteriorating. This pollution of the atmosphere greatly affects the light energy reaching the ground. Particularly, since the light enters the solar cell module in various forms, the amount of input energy of the solar power generation system may be changed depending on the ratio of direct beam irradiation and diffused horizontal irradiation. In this paper, we analyze how the ratio of direct beam component and diffused component on global horizontal irradiation varies with the atmospheric conditions. In addition, the reliability of the regression equation, designed to decompose the global horizontal irradiation into horizontal direct beam irradiation and diffused horizontal irradiation, was verified according to the level of air pollution. So, we derive the most suitable decomposition model for use in domestic climatic conditions in Korea by comparing the ratio of direct and diffuse component on the horizontal which is calculated with Perez model and Watanabe model using the meteorological weather data observed for 14 months. Finally, to reduce the error of the transposition result, we verified the reliability of the decomposition which depends on the atmospheric environment.

• 한국환경복원기술학회지
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• 제24권1호
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• pp.53-68
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• 2021

The study aims to propose a locating method of green space for reducing Particulate Matter (PM) in ambient air in conjunction with its source traces and vulnerable groups. In order to carry out the aims and purposes, a literature review was conducted to derive indicators of vulnerable area to PM. Based on the developed indicators, the vulnerable areas and green spaces creation strategies for each cluster were developed for the case of Seongdong-gu, Seoul. As a result, six indicators for vulnerability analysis were came out including the vulnerable groups (children's facilities, old people's facilities), emission sources (air pollutant emission workplaces, roads), and environmental indicators (particulate matter concentration, NDVI). According to the six selected indicators, the target area was divided into 39 hexagons and analyzed to result the most vulnerable areas to particulate matter. As a result of comprehensive vulnerability analysis, the Seongsu-dong area was found to be the most vulnerable to particulate matter, and 5 clusters were derived through k-means cluster analysis. Cluster 1 was analyzed as areas that most vulnerable to particulate matter as a result of the comprehensive analysis, therefore urgent need to create green spaces to reduce particulate matter. Cluster 2 was areas that mostly belonged to the Han River. Cluster 3 corresponds to the largest number of hexagons, and since many vulnerable groups are distributed, it was analyzed as a cluster that required the creation of a green spaces to reduce particulate matter, focusing on facilities for vulnerable groups. Three hexagons are included in cluster 4, and the cluster has many roads and lacks vegetation in common. Cluster 5 has a lot of green spaces and is generally distributed with fewer vulnerable groups and emission sources; however, it has a high level of particulate matter concentration. In a situation where various green spaces creation projects for reducing particulate are being implemented, it is necessary to consider the vulnerable groups and emission sources and to present green space creation strategies for each space characteristic in order to increase the effectiveness of such projects. Therefore, this study is regarded as meaningful in suggesting a method for selecting a green area for reducing PM.

• 대한원격탐사학회지
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• 제36권6_3호
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• pp.1635-1641
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• 2020

대기오염은 최근 급속한 인구증가와 산업화 등으로 인해 인류가 해결해야 할 중요한 문제로 인식되고 있다. 특히 미세먼지 노출에 따른 질병 사례들의 증가와 대기 질 정보에 대한 국민의 관심 증대로 인해 미세먼지는 환경문제를 넘어 사회적 재난 수준의 심각한 이슈로 대두되고 있다. 아울러 대기 중 미세먼지 농도는 실내 미세먼지 농도에 밀접하게 관여하여 실내 공기질의 악화를 야기시킬 수 있다. 따라서 실내외 미세먼지 측정, 모델링, 기여도 평가를 통한 오염 특성을 이해하고, 이를 과학적으로 규명하는 것은 매우 중요하다. 본 특별호는 부경대학교 i-SEED 지구환경교육연구단과 학교미세먼지관리 기술개발사업단에서 진행하고 있는 다양하고 흥미로운 실내외 미세먼지 측정과 관리 기술에 대한 여러 연구들을 소개한다. 이를 통하여 실내외 미세먼지 측정과 관리 기술에 대한 현 주소를 파악하고 참여 연구그룹의 연구 결과에 대한 정보 공유에 본 특별호가 기여하길 기대한다. 더불어 미세먼지에 관련한 지속적인 연구주제 발굴과 국가적인 지원을 이끌어 내기 위한 관련 전문가들의 노력을 기대한다.

• 자원ㆍ환경경제연구
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• 제30권2호
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• pp.207-235
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• 2021

본 논문은 오존과 미세먼지 수준이 도보, 자가용, 버스, 전철의 통행시간에 미치는 영향을 분석한다. 가구통행실태조사 자료와 SUR 모형을 이용하여 분석한 결과, 대기오염 농도가 높아질수록 자가용 통행시간이 증가하고, 버스의 통행시간이 감소하는 것으로 나타난다. 그러나 대기오염 경보가 발령되면 버스의 통행시간이 증가하는 공익적 행위가 일부 나타나지만, 자가용의 통행시간이 증가하거나 변화가 없고, 전철의 통행시간이 증가하지 않는 것으로 나타난다. 이는 경보의 발령으로 제공되는 정보가 배출 저감을 위한 통행행태 변화보다는 오염상황에의 노출을 줄이는 회피행동에 더 큰 영향을 미쳤음을 시사한다.

• 한국환경보건학회지
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• 제43권3호
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• pp.202-213
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• 2017

Objectives: HRA (Health Risk Assessment) is an important tool for measuring the health impacts of air pollution. HRA is already being used widely as an important reference for crafting air pollution policies. However, the absence of a domestic CRF (Concentration Response Function) standard, which is a main component for HRA, could cause confusion amongst policy-makers. The purpose of this study is to tabulate a domestic CRF standard for a PM (Particulate Matter)-related HRA. Methods: This study suggested a domestic CRF standard for HRA thorough a literature review. The literature review for meta-analysis was limited to the English language for epidemiological studies published from January 1980 to March 2016. This meta-analysis was conducted by assuming both fixed- and random-effects of CRF. In addition, studies that reported HRA of air pollution for WHO (World Health Organization), the EC (European Commission), and the EPA (Environmental Protection Agency) were reviewed to compare the CRFs of South Korea to the recommended CRFs of WHO, the EC, or the EPA. Additionally, a domestic CRF standard was supplemented by these. Results: Nineteen studies were selected for the CRF for South Korea. Fifty-three CRFs were derived for meta-analysis. CRFs with a standard for PM-related HRA were divided according to the following four criteria: air pollution, exposure characteristics, type of health impact, and age group. Finally, a domestic CRF standard was created comprised of 21 CRFs. Among these, six CRFs were derived from the results of foreign HRA studies. Conclusions: This study is important in that a domestic CRF standard is first suggested. In addition, this study suggests a further area of study for using HRA as a policy tool and a direction of epidemiological study.

• Elastomers and Composites
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• 제58권4호
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• pp.161-172
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• 2023

Because particulate matter has emerged as a major contributor to air pollution, the tire industry has conducted studies to reduce particulate matters from tires by improving tire performance. In this study, we compared the conventional blending method, in which rubber, filler, and additives are mixed simultaneously, to the Y-blending method, in which masterbatches are blended. We manufactured carbon black (CB)-filled natural rubber (NR)/butadiene rubber (BR) blend and silica-filled epoxidized NR/BR blend compounds to compare the effects of the two blending methods on the physical properties of the compounds and the amount of particulate matter generated. The Y-blending method provided uniform filler distribution in the heterogeneous rubber matrix, improved processability, and exhibited low rolling resistance. This method also improved physical properties owing to the excellent filler-rubber interaction. The results obtained from measuring the generation of particulate matter indicated that, the Y-blending method reduced PM_2.5 particulate matter generation from the CB-filled and silica-filled compounds by 38% and 60%, and that of PM₁₀ by 29% and 67%, respectively. This confirmed the excellence of the Y-blending method regarding the physical properties of truck bus radial tire tread compounds and reduced particulate matter generated.

• 디지털융복합연구
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• 제17권8호
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• pp.471-479
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• 2019

본 연구는 미세먼지 예방행동의도에 영향을 미치는 결정요인을 탐색하는 것을 목적으로 했다. 280명의 대학생들을 대상으로 한 설문조사 결과, 미세먼지에 대한 지각된 민감성과 지각된 장애는 예방행동의도에 통계적으로 유의한 영향을 미치지 못하였다. 그러나 미세먼지에 대한 지각된 심각성과 지각된 이익, 주관적 규범과 자기효능감은 예방행동의도에 통계적으로 유의한 긍정적 영향을 미치는 것으로 나타났다. 본 연구 결과를 통해 대학생들의 미세먼지 예방행동의도를 높이기 위해서는 지각된 심각성과 지각된 이익, 주관적 규범과 자기효능감을 높일 수 있는 커뮤니케이션 전략이 요구되며, 향후 미세먼지와 같은 환경위험에 대한 예방행동을 설명하는데 있어 일정 부분 기여할 것으로 판단된다.