Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Comparison of Ultrafine Particles Monitored at a Roadside Using an SMPS and a TR-DMPS

SMPS와 TR-DMPS를 이용한 도로변 초미세 입자 모니터링 결과의 비교

  • Woo, Dae-Kwang (SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University) ;
  • Lee, Seung-Bok (Cener for Environmental Technology Research, Korea Institute of Science and Technology) ;
  • Bae, Gwi-Nam (Cener for Environmental Technology Research, Korea Institute of Science and Technology) ;
  • Kim, Tae-Sung (SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University)
  • 우대광 (성균관대학교 성균나노과학기술원) ;
  • 이승복 (한국과학기술연구원 환경기술연구단) ;
  • 배귀남 (한국과학기술연구원 환경기술연구단) ;
  • 김태성 (성균관대학교 성균나노과학기술원)
  • Published : 2008.08.31
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Abstract

A Transient Differential Mobility Particle Spectrometer (TR-DMPS) with a short response time was recently developed to monitor high concentration of ultrafine particles emitted from vehicles. To investigate the availability of the TR-DMPS for monitoring transient roadside aerosols, the number size distribution of ultrafine particles was monitored at the Cheongnyangni roadside in Seoul on March 23, 2007 together with a Scanning Mobility Particle Sizer (SMPS). The roadside aerosols were monitored every 5 min and 0.1 sec by using the SMPS and the TR-DMPS, respectively. The concentration of ultrafine particles at the roadside was highly fluctuated for a short duration. From the comparison of particle number concentrations and size distributions between two instruments, it was confirmed that the SMPS provided fairly good time-averaged number size distribution although it did not follow rapid change of particle number concentration at the roadside. The TR-DMPS quickly responded to a rapid change of particle number concentration due to abrupt traffic flow. However, the TR-DMPS frequently showed electrical noise events, resulting in underestimated particle contamination. A more stable operation of the TR-DMPS is needed in application of roadside aerosol monitoring.

Keywords

References

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