Development of an electrostatic precipitator for off-line particle analysis

被引:141
作者
Dixkens, J [1 ]
Fissan, H [1 ]
机构
[1] Univ Duisburg Gesamthsch, D-47057 Duisburg, Germany
关键词
D O I
10.1080/027868299304480
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Due to the lake of in-situ aerosol particle analysis systems, aerosol samples are taken and analyzed off-line. For detailed analysis of particle properties such as shape, morphology, and composition, off-line operating analytical tools like light microscopes, scanning electron microscopes (SEM), total reflection x-ray fluorescence (TXRF), and so on are used. The analysis must be performed on a representative sample of particles homogeneously deposited on a flat sample plate. This avoids sample preparation steps which may change the sample. In this paper we describe the design, construction, and evaluation of a continuous sampling device that deposits gasborne particles on an analytically suitable sample plate. The collection efficiency and the deposition pattern were optimized using a numerical model and experiments. It turned out that representative samples appropriate for further analysis can be taken in the particle size range from 0.03 mu m < Dp < 10 mu m. Additionally, the sampling efficiency was investigated for particles smaller than 0.03 mu m using electrical and non-electrical deposition mechanisms like diffusion and thermophoresis, The investigations performed demonstrate that the designed electrostatic precipitator (ESP) is a very useful tool for homogeneous particle deposition on analytically suitable flat sample plates and can be used as a back-up filter. Further, the ESP especially can be used in combination with a differential mobility analyzer (DMA) if detailed investigations of a narrow particle size range of a polydisperse aerosol are required.
引用
收藏
页码:438 / 453
页数:16
相关论文
共 18 条
  • [1] Bird R.B., 2006, TRANSPORT PHENOMENA, Vsecond
  • [2] BUSCHER P, 1992, J AEROSOL SCI, V23, P385
  • [3] COLLECTION EFFICIENCIES OF A POINT-TO-PLANE ELECTROSTATIC PRECIPITATOR
    CHENG, YS
    YEH, HC
    KANAPILLY, GM
    [J]. AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL, 1981, 42 (08): : 605 - 610
  • [4] DEPPERT K, 1996, AEROSOL SCI, V27, P151
  • [5] A NEW PARTICLE SAMPLING TECHNIQUE FOR DIRECT ANALYSIS USING TOTAL-REFLECTION X-RAY-FLUORESCENCE SPECTROMETRY
    DIXKENS, J
    FISSAN, H
    DOSE, T
    [J]. SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 1993, 48 (02) : 231 - 238
  • [6] DIXKENS J, 1995, THESIS GERHARD MERCA
  • [7] DIXKENS J, 1997, FINE SOLID PARTICLES, P214
  • [8] DIXKENS J, 1993, J AEROSOL SCI, V24, P139
  • [9] FISSAN H, 1996, EFCE PUBLICATION SER, V119, P257
  • [10] FRIEDLANDER S, 1979, SMOKE DUST HAZE