Light Scattering for Sub-Micronic Particles Size Measurements in Agitated Suspensions

机译：搅拌悬浮液中亚微米级颗粒尺寸测量的光散射

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Dynamic light scattering (DLS) method has been applied to particle size measurement in agitated liquid suspensions. Measurements are achieved using an optical fibre probe and calibrated particles of 0.1, 0.33 μm and 35 nm size. The solutions were mechanically stirred during the measurements. The influence of the stirring speed and of the probe location on the apparent radius from DLS can still be described by the Stokes-Einstein law if the convective component of the diffusion coefficient is taken into account. Such a device and calibration could be used to measure and control the actual size of sub-micronic particles or droplets in stirred (continuous or batch) reactors - provided the local turbulence does not considerably perturb the Brownian motion.

机译：动态光散射（DLS）方法已应用于搅拌液体悬浮液的粒度测量。使用光纤探头和尺寸为0.1、0.33μm和35 nm的校准颗粒可以实现测量。在测量期间将溶液机械搅拌。如果考虑扩散系数的对流分量，搅拌速度和探头位置对DLS视在半径的影响仍然可以通过斯托克斯-爱因斯坦定律描述。这种设备和校准可用于测量和控制搅拌（连续或间歇式）反应器中亚微米级颗粒或液滴的实际尺寸，前提是局部湍流不会显着干扰布朗运动。

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《Italian Conference on Chemical and Process Engineering(ICheaP-6) vol.2; 20030608-11; Pisa(IT)》|2003年|P.919-924|共6页
会议地点 Pisa(IT)
作者
M. Rivallin; A. Gaunand; A. Kanaev;
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作者单位

LIMHP/CNRS, Institut Galilee, Universite Paris-Nord, 93420 Villetaneuse, France;

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原文格式 PDF
正文语种 eng
中图分类基本有机化学工业;
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Light Scattering for Sub-Micronic Particles Size Measurements in Agitated Suspensions

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