２成分凝集エアロゾル粒子の形態特性と個別粒子の化学組成
スポンサーリンク
概要
- 論文の詳細を見る
Morphological changes of two-component (Pb/NaCl) aerosol particles undergoing Brownian coagulation in a flowing system were studied by image processing of two-dimen-sional scanning electron micrographs of the particles. From the relationship between radii of gyration and perimeters of the particles, fractal dimensions were calculated considering the aggregates as multifractal (lower dimension d<SUB>l</SUB> and higher dimension d<SUB>h</SUB>). Changes in fractal dimension d<SUB>h</SUB> were correlated to the degree of agglomeration. <BR> Chemical composition of individual particles was calculated by using diameter of primary Pb particles, side length of primary cubic NaCl particles and density of each constituents. Number distribution of the two-component particles was determined as a function of volume equivalent diameter and mass (or volume) fraction of the constituent, and time evolution of the distributions showed conversion of externally mixed aerosols to internally mixed ones due to Brownian coagulation. Mutimodality in NaCl mass distribution measured by cascade impactor could be reproduced by conversion of volume equivalent diameter to aerodynamic diameter using the primary particle sizes and density of two constituents.
- 日本エアロゾル学会の論文
日本エアロゾル学会 | 論文
- 自然放射能からみた東アジアにおけるレスと風成塵起源土壌の特徴
- ICRPのヒト呼吸気道モデル66における生体パラメータがエアロゾル沈着に及ぼす影響 : 日本人とコーカシアン人
- 実験計画のためのエアロゾル計数に関する統計的考察
- 固体の大気エアロゾル表面における不均一反応
- エアロゾルシンポジウム報告 : 最新のエアロゾル・微粒子計測技術と環境・材料・医療分野への展開