우대광 배귀남 이승복 임철수 김태성 2024-01-20T16:00:34Z 2024-01-20T16:00:34Z 2021-09-06 2011-12 1598-7132 https://pubs.kist.re.kr/handle/201004/129743 Although a scooter is a convenient transportation means for a short distance traveling with a light package in the congested urban center, it might be one of the significant sources of air pollutants to which many people can easily be exposed during its passing-by. In this paper, we measured concentrations of gases and particles emitted from a scooter at roadside with no other traffic. To understand the characteristics of scooter emissions with respect to driving speed (idling, 30 km/h) at the roadside, total particle number concentration, particle size distribution, average surface area of particles deposited in the alveolar region, and concentrations of black carbon, CO, and NOx were measured. The concentrations of the particle number, surface area of deposited particles, CO, and NOx were highly fluctuated in the scooter’s idling condition. The trends of particle number concentration, CO, and NOx generation were similar to one another. When the scooter started to move, all of NOx, CO and particle number concentrations increased and after it passed by at the speed of 30 km/h, the concentration peaks of the particles and gases appeared at the same time. Unimodal size distribution with ~70 and ~93 nm mode diameters was observed for the idling and cruising condition, respectively. From this work, we found that emission from a passing vehicle could be characterized using a roadside monitoring technique. Korean 한국대기환경학회 도로변 측정을 이용한 2행정 스쿠터의 대기오염물질 배출특성 연구 Emission Characteristics of a Passing Two-stroke Scooter using at a Roadside Measurement Article 2 한국대기환경학회지, v.27, no.6, pp.663 - 671 한국대기환경학회지 27 6 663 671 kci ART001620777 Scooter emissions Roadside measurement Ultrafine particle NOx CO EEPS (engine exhaust particle sizer)