• Title/Summary/Keyword: Air pollution particle

Search Result 297, Processing Time 0.023 seconds

Risk-based Priority Ranking for Air Pollution Problems in Seoul (서울 지역에서 인체 위해도에 입각한 대기오염물질의 관리 우선 순위 선정에 관한 연구)

  • 김예신;박화성;이용진;임영욱;신동천
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.19 no.2
    • /
    • pp.205-216
    • /
    • 2003
  • We have gathered exposure data on ambient air quality level and investigated dose-response slope factors of air pollutants such as fine particle, HAPs (metals, VOCs, PAHs) and dioxins in Seoul. Theoretical mortality incidences were estimated from exposure to these pollutants. From the results, priorities were ranked in the order fine particle, metals, VOCs, dioxins and PAHs by ordinal scale, and the uncertainties relative to those risk estimates were described.

Indoor Air Pollution of a High-rise Apartment Caused by Combustion Sources in Winter (겨울철 연소오염원에 의한 도심 고층 아파트의 실내공기오염)

  • Kim, Jong Bum;Lee, Gwangjae;Ryu, Sung Hee;Lee, Jae Young;Woo, Sung-Ho;Lee, Seung-Bok;Kim, Kyung Hwan;Yun, Seong-Taek;Bae, Gwi-Nam
    • Particle and aerosol research
    • /
    • v.10 no.3
    • /
    • pp.119-130
    • /
    • 2014
  • Home is a major living environment of children. In urban area, indoor air at home could be severely influenced by combustion sources such as vehicle exhaust and cooking. In this work, the air quality of a high-rise apartment was investigated by monitoring combustion-related air pollutants at both indoor and outdoor in winter of 2014. From 48-h continuous monitoring data, large amount of $NO_x$ was observed at the balcony of the high-rise apartment during the morning traffic hours. It deteriorated indoor air quality of the apartment. During the cooking activity, high peak episodes of ultrafine particles were seen. It was concluded that effects of vehicle exhaust and cooking activity on the indoor air of the high-rise apartment could be easily checked by $NO_x$ and ultrafine particle indicators, respectively.

Emission Characteristics and Hazard Assessment of Polycyclic Aromatic Hydrocarbon (PAHs) from Solid Fuel Facilities (고형연료제품 사용시설에 따른 다환방향족탄화수소 (PAHs)의 배출특성 및 유해성 평가)

  • Heo, Sun-Hwa;Lim, Seung-Young;Kang, Dae-Il;Kim, Dae-Gon;Jeon, Ki-Joon;Jang, Kee-Won
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.33 no.4
    • /
    • pp.333-341
    • /
    • 2017
  • Recently, the earth has shown the limit of environmental capacity. It is also experiencing an environmental crisis with rising energy prices and depletion of coal. Therefore, development of renewable energy is very important solution. However, waste fuel solid are renewable fuels, but they cause environmental problems. In this study, the emission characteristics of hazardous air pollutants were analyzed through measurements at the facilities using solid fuels (SRF, BIO-SRF). Analysis method of PAHs are based on the Korea Standard Methods for Examination. The analysis of PAHs showed that the concentration much higher in Naphthalene, and Benzo(a)pyrene showed at a higher concentration incertain sources. As a result of gas phase and particle phase PAHs, most of Benzo(a)pyrene appeared to be particulate. Through the results of this study will provide basic data for atmospheric environmental management.

Characteristics of long-range transported PM2.5 at a coastal city using the single particle aerosol mass spectrometry

  • Cai, Qiuliang;Tong, Lei;Zhang, Jingjing;Zheng, Jie;He, Mengmeng;Lin, Jiamei;Chen, Xiaoqiu;Xiao, Hang
    • Environmental Engineering Research
    • /
    • v.24 no.4
    • /
    • pp.690-698
    • /
    • 2019
  • Air pollution has attracted ever-increasing attention because of its substantial influence on air quality and human health. To better understand the characteristics of long-range transported pollution, the single particle chemical composition and size were investigated by the single particle aerosol mass spectrometry in Fuzhou, China from 17th to 22nd January, 2016. The results showed that the haze was mainly caused by the transport of cold air mass under higher wind speed (10 m·s-1) from the Yangtze River Delta region to Fuzhou. The number concentration elevated from 1,000 to 4,500 #·h-1, and the composition of mobile source and secondary aerosol increased from 24.3% to 30.9% and from 16.0% to 22.5%, respectively. Then, the haze was eliminated by the clean air mass from the sea as indicated by a sharp decrease of particle number concentration from 4,500 to 1,000 #·h-1. The composition of secondary aerosol and mobile sources decreased from 29.3% to 23.5% and from 30.9% to 23.1%, respectively. The particles with the size ranging from 0.5 to 1.5 ㎛ were mainly in the accumulation mode. The stationary source, mobile source, and secondary aerosol contributed to over 70% of the potential sources. These results will help to understand the physical and chemical characteristics of long- range transported pollutants.