서울시 노원구 도로상 극미세입자 오염도 공간분포 특징
Characteristics of spatial distribution of ultrafine particle number concentration on the roads of Nowon-gu, Seoul
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초록
The spatial distributions of air pollutants, in particular, ultrafine particles near traffic congestion roads at urban areas need to reduce human exposure levels for protecting public health. In this study, the number concentrations of ultrafine particles larger than 5 nm were measured every second during driving on the major roads of Nowon-gu, Seoul for 1.6 h using a mobile emission laboratory on October 5, 2010. The ultrafine particle number concentrations ranged from 7,009 to 265,600 particles/㎤ with an average of 55,570 particles/㎤, and these levels were comparable to concentrations of ultrafine particles larger than 3 or 7 nm on the arterial roads at urban areas in Los Angeles, USA and Zürich, Switzerland. It was frequently observed that the ultrafine particle number increased rapidly when vehicle speed was accelerated and it decreased sharply when vehicle speed was decelerated. The high peak events of ultrafine particle concentration larger than 200,000 particles/㎤ were observed seven times during the measurement period. From the three repeated measurements during the short period of 50 min, it was concluded that the ultrafine particle number concentration on the road was significantly time-dependent. This on-road measurement approach can be utilized to manage vehicle-related air pollution in urban.
Abstract
The spatial distributions of air pollutants, in particular, ultrafine particles near traffic congestion roads at urban areas need to reduce human exposure levels for protecting public health. In this study, the number concentrations of ultrafine particles larger than 5 nm were measured every second during driving on the major roads of Nowon-gu, Seoul for 1.6 h using a mobile emission laboratory on October 5, 2010. The ultrafine particle number concentrations ranged from 7,009 to 265,600 particles/㎤ with an average of 55,570 particles/㎤, and these levels were comparable to concentrations of ultrafine particles larger than 3 or 7 nm on the arterial roads at urban areas in Los Angeles, USA and Zürich, Switzerland. It was frequently observed that the ultrafine particle number increased rapidly when vehicle speed was accelerated and it decreased sharply when vehicle speed was decelerated. The high peak events of ultrafine particle concentration larger than 200,000 particles/㎤ were observed seven times during the measurement period. From the three repeated measurements during the short period of 50 min, it was concluded that the ultrafine particle number concentration on the road was significantly time-dependent. This on-road measurement approach can be utilized to manage vehicle-related air pollution in urban.
참고문헌 (17)
- Bae, G.N, "Ultrafine particle level at a roadside of Seoul in spring", Particle and Aerosol Research, 3(1), pp.29~40 (2007)
- Bukowiecki, N., "A mobile pollutant measurement laboratory- measuring gas phase and aerosol ambient concentrations with high spatial and temporal resolution", Atmospheric Environment, 36, pp.5569~5579 (2002)
- Green, R.S, "Proximity of California public schools to busy roads", Environmental Health Perspectives, 112(1), pp.61~66 (2004)
- Monthly report of automatic weather system data on October, 2010, "Korea Meteorological Administration", Korea Meteorological Administration, ~, pp.Publishing number 11-1360000-000005-06. (2010)
- 이진욱, "디젤 승용차량 시험모드별 극미세입자 배출 특성 해석", 한국자동차공학회 논문집, 16(1), pp.114~120 (2008), 한국자동차공학회
- 이승복, "자동차 배출가스에 의한 도심 교차로의 대기오염 특징", 한국자동차공학회 논문집, 18(4), pp.48~53 (2010), 한국자동차공학회
- "Report on additional and supplementary management plan for ambient air quality in Greater Seoul Area"[URL]
- "Guidebook on the Installation and Management of Air Quality Monitoring station"[URL]
- "Annual Report of Air Quality in Korea 2009, National Institute of Environmental Research"[URL]
- 명차리, "Inter-laboratory correlation exercise on a light-duty diesel passenger vehicle to verify nano-particle emission characteristics by Korea particle measurement program", Journal of Mechanical Science and Technology, 23(3), pp.729~738 (2009), 대한기계학회
- Oberdörster, G, "Nanotoxicology: An emerging discipline evolving from studies of ultrafine particles", Environmental Health Perspectives, 113(7), pp.823~839 (2005)
- Pirjola, L, "Sniffer - a novel tool for chasing vehicles and measuring traffic pollutants", Atmospheric Environment, 38, pp.3625~3635 (2004)
- Power, M.C, "Traffic-related air pollution and cognitive function in a cohort of older men", Environmental Health Perspectives (2010)[DOI]
- Seoul Statistical Yearbook 2010, "Seoul Metropolitan Government", Seoul Metropolitan Government, ~, pp.Publishing number 51-6110000-000003-10. (2010)
- Westerdahl, D, "Mobile platform measure ments of ultrafine particles and associated pollutant concentrations on freeways and residential streets in Los Angeles", Atmospheric Environment, 39, pp.3597~3610 (2005)
- Zarvalis, D, "A mobile laboratory for on-board and ambient level emissions measurement, SAE 2008-01-0756", 2008 World Congress, Detroit, Michigan, pp.14~17 (2008)
- Zhu, Y, "Measurements of ultrafine particles and other vehicular pollutants inside a mobile exposure system on Los Angeles freeways", Journal of the Air & Waste Management Association, 58, pp.424~434 (2008)