• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2009년도 추계학술대회 논문집
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• pp.417-419
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• 2009

• 대한위생학회:학술대회논문집
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• 대한위생학회 2005년도 정기학술심포지움
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• pp.29-30
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• 2005

• Asian Journal of Atmospheric Environment
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• 제4권1호
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• pp.9-19
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• 2010

The size distribution of airborne particulate matter (PM) and the concentrations of associated metallic elements were investigated in a busy urban region of a typical Korean industrial city. The PM concentrations measured during the spring, except for those in the size range of 1.1 to 2.1 ${\mu}m$, were slightly higher than the PM concentrations in the summer. Coarse particles contributed greatly to the variation in PM concentrations in the spring, while fine and submicron particles contributed largely to the variation in PM concentrations in the summer. The difference in size modes of the PM concentrations between spring and summer may be explained by the Asian dust effect and its accompanying wind direction and speed. Extremely high enrichment factors (EFs) values (6,971 to 60,966) for all of the size distributions in PM were identified for cadmium (Cd). High EFs values (12 to 907) were also identified for other heavy metals including Cr, Cu, Ni, Pb, Zn and Mn. Low EF values (0.29 to 8.61) were identified for Ca, K, Mg and Na. These results support the common hypothesis that most heavy metals in ambient PM have anthropogenic sources and most light metals have crustal sources. The results of principal components analyses and cluster analyses for heavy metals indicate that the principal sources of PM and metals were emissions from non-ferrous metal smelters, oil combustion, incinerators, vehicular traffic and road dust.

• 한국입자에어로졸학회지
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• 제15권4호
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• pp.149-157
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• 2019

Infiltration characteristics of airborne particulate matter had been investigated in real-life for about 90 days over 2 years in a Korean apartment building where a 3-person household had lived and the exclusive private area was 84.9 ㎡. Airtightness was measured by fan depressurization, and the ACH₅₀ was 2.41 times per hour. In and outdoor particle concentrations were measured by optical particle counters. Infiltration factors and filtration efficiencies of the house, which reflect the removal of outdoor particles penetrating building envelope and the deposition inside a building, were obtained from data screened based on an empirical evaluation process. Infiltration factor of fine particles showed a range from about 42% at 0.4 m/s of wind speed to 72% at 4.2 m/s of wind speed with closed windows and doors. Filtration efficiency was like a MERV 13 grade filter with an open window outside at a balcony at low outdoor wind speed under 1 m/s. The grade decreased to MERV 11 by opening another outside window at the other balcony. Filtration efficiencies decreased as much as 29% in average at a range of 0.3~2.5 ㎛.

• Tuberculosis and Respiratory Diseases
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• 제83권2호
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• pp.116-121
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• 2020

Particulate matter (PM) is suspended dust that has a diameter of <10 ㎛ and can be inhaled by humans and deposited in the lungs, particularly the alveoli. Recent studies have shown that PM has an adverse effect on respiratory diseases. The aim of this article is to review respiratory diseases associated with PM. According to existing studies, PM is associated with chronic obstructive pulmonary disease, bronchial asthma, and several other respiratory diseases and increases the mortality rates of these diseases. Moreover, increased exposure in the high concentration of atmospheric PM is associated with the development of lung cancer. The most simple and common way to protect an individual from airborne PM is to wear a face mask that filters out PM. In areas of high concentration PM, it is recommended to wear a face mask to minimize the exposure to PM. However, the use of N95 or KF94 masks can interfere with respiration in patients with chronic respiratory diseases who exhibit low pulmonary function, leading to an increased risk of respiratory failure. Conclusionally, reduction of the total amount of PM is considered to be important factor and strengthening the national warning notification system to vulnerable patients and proper early management of exacerbated patients will be needed in the future.

• 생태와환경
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• 제53권4호
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• pp.436-444
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• 2020

대기 중 미세먼지가 환경과 인간의 공중 보건에 악영향을 미치고 있다는 사실은 점점 명확해지고 있다. 미세먼지가 식물의 잎에 침착, 흡수되므로 식물이 미세먼지를 제거하는 바이오필터로 활용하기 위한 연구들이 활발히 진행되고 있다. 또한, 식물에 흡수된 미세먼지는 식물에 다양한 생리적, 형태적 영향을 미치게 된다. 본 연구는 식물과 미세먼지간의 상호작용에 대해 국내외에서 수행되어온 연구들의 방법과 결과를 특히 생태적 관점에서 종합 정리하였다.

• 한국안전학회지
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• 제35권6호
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• pp.9-14
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• 2020

This study was to compare the sampling efficiencies for monitoring of diesel particulate matter (DPM) using two different sampling methods; In-House PVC cyclone sampling heads and commercial airborne DPM (EC) sampling heads mounted on Dorr-Oliver cyclone heads. Personal exposure levels of DPM, analysed for elemental carbon (EC) were 0.004 - 0.2 mg/m³ for the loader drivers and 0.005 - 0.34 mg/m³ for the specialised mining vehicle (SMV) drivers were similar to previous study results. The highest result (0.34 mg/m³) might be from an irregular production schedule and multiple job tasks requested. The results using the two sampling heads were not significantly different and it is thought that the In-House PVC cyclone with 37 mm quartz filter could be used in place of the commercial sampler as a preliminary screen in place of using the commercial sampler.

• 한국가시화정보학회지
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• 제20권1호
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• pp.45-51
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• 2022

Airborne particulate matter(PM) has been a global environmental problem. PM whose diameter is smaller than 10 ㎛ can permeate respiratory organs and has harmful effects on human health. Therefore, PM monitoring systems are necessary for management of PM and prevention of PM-induced negative effects. Conventional PM monitoring techniques are expensive and cumbersome to handle. In the present study, two types of PM monitoring devices were designed for measuring indoor PM concentration, portably. We experimentally investigated the performance of three commercial PM concentration measurement sensors in a closed test chamber. As a result, PM2008 sensor showed the best PM concentration measurement accuracy. Linear regression method was applied to convert PM concentration value acquired from PM2008 sensor into ground truth value. A mobile application(app.) was also created for users to check the PM concentration, easily. The mobile app. also provides safety alarm when the PM₁₀ concentration exceeds 81 ㎛/m³. The developed hand-held system enables the facile monitoring of surrounding air quality.

• 한국산림과학회지
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• 제112권1호
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• pp.1-10
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• 2023

Urbanization and industrialization associated with rapid economic development have resulted in air pollution in urban areas, which adversely affects human health and the environment around the world. Growing awareness of the health effects of airborne particulate matter (PM) has led to the emergence of urban greening as a promising eco-friendly, nature-based solution to reduce the concentration of PM (especially PM_2.5) to which individuals are exposed, thereby promoting public health. In this review, we highlight fundamental insights about PM and recent research on the ability of urban greening to capture PM. Reports from the scientific literature on PM published from 1992 to 2021 were retrieved from Google Scholar. Here, we explore some of the main complex relationships between leaf traits and the ability to retain PM for research or management to optimize greenspaces.

• 한국미생물·생명공학회지
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• 제50권2호
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• pp.165-192
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• 2022

본 논문에서는 실외 대기 환경의 바이오에어로졸 혹은 입자상물질의 미생물 메타게놈 특성과 이에 영향을 미치는 기후 및 환경 인자의 영향을 고찰하였다. 시료 채취 지역 및 환경 조건 특성별 대기 중 세균과 곰팡이 농도를 요약 하고, 에어로졸과 PM 시료의 세균과 곰팡이의 메타게놈 특성을 조사하기 위한 비배양법 기반 분석방법과 메타게놈 특성을 정리하였다. 또한, 세균과 곰팡이의 메타게놈 특성과 다양성 및 특성에 미치는 기상 인자와 환경 인자의 영향을 고찰하였다. 대기 중 미생물의 생존, 생장과 분산은 지역 기상 조건 및 대기 오염 물질에 의해 크게 영향을 받았다. 일반적으로 기온이 상승함에 따라 AM 농도는 증가하지만, 여름에는 고온과 강한 자외선의 영향으로 AM 농도가 감소하였다. 습도와 미생물 농도는 양의 상관성을 보이나, 습도가 너무 높으면 AM의 분산이 지연되었다. 이러한 종합적인 고찰 결과는 대기권에서 미생물의 역할과 기능을 이해하고, 이들 미생물에 의해 야기되는 환경 및 공중보건 문제를 해결하기 위한 전략 수립 및 저감 기술 개발에 활용될 수 있다.