Application of dynamic light scattering based on a monodisperse model as an in-situ method of measuring ultrafine particles growing and aggregating in a flame

K. Ueyama, T. Ono, Masahiko Matsukata, R. Osima

研究成果: Article

3 引用 (Scopus)

抄録

Dynamic light scattering (DLS) based on a monodisperse model was applied to ultrafine particle formation in a flame where particles grow and deform within several ms, with occasional high number density and broad size distribution. DLS was experimentally evaluated as an in-situ technique of measuring mean particle size by comparing with TEM (transmission electron microscope) photographs. For particles formed in a flame, a mean particle size of several tens of nanometers by DLS with monodisperse assumption was in good agreement with the volume mean diameter obtained from TEM photographs, except for particles strongly deviated to small size. For particles with a size distribution strngly deviated to the fine side, DLS with monodisperse assumption gives a considerably large value, around twice the volume mean diameter. This value still reflects a plausible mean size of large particles contained in the measuring volume. (Authors)

元の言語English
ページ(範囲)686-691
ページ数6
ジャーナルJournal of Chemical Engineering of Japan
26
発行部数6
出版物ステータスPublished - 1993
外部発表Yes

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Dynamic light scattering
Electron microscopes
Particle size
Ultrafine

ASJC Scopus subject areas

  • Chemical Engineering(all)

これを引用

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AU - Ueyama, K.

AU - Ono, T.

AU - Matsukata, Masahiko

AU - Osima, R.

PY - 1993

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AB - Dynamic light scattering (DLS) based on a monodisperse model was applied to ultrafine particle formation in a flame where particles grow and deform within several ms, with occasional high number density and broad size distribution. DLS was experimentally evaluated as an in-situ technique of measuring mean particle size by comparing with TEM (transmission electron microscope) photographs. For particles formed in a flame, a mean particle size of several tens of nanometers by DLS with monodisperse assumption was in good agreement with the volume mean diameter obtained from TEM photographs, except for particles strongly deviated to small size. For particles with a size distribution strngly deviated to the fine side, DLS with monodisperse assumption gives a considerably large value, around twice the volume mean diameter. This value still reflects a plausible mean size of large particles contained in the measuring volume. (Authors)

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