EFFECT OF LASER-BEAM DIMENSIONS ON ELECTROPHORETIC MOBILITY MEASUREMENTS

Authors
FINSY R XU RL DERIEMAEKER L
Citation
R. Finsy et al., EFFECT OF LASER-BEAM DIMENSIONS ON ELECTROPHORETIC MOBILITY MEASUREMENTS, Particle & particle systems characterization, 11(5), 1994, pp. 375-378
Citations number
10
Categorie Soggetti
Materials Science, Characterization & Testing","Engineering, Chemical
Journal title
Particle & particle systems characterization → ACNP
ISSN journal
09340866
Volume
11
Issue
5
Year of publication
1994
Pages
375 - 378
Database
ISI
SICI code
0934-0866(1994)11:5<375:EOLDOE>2.0.ZU;2-P
Abstract
The effect of the finite dimension of the measuring probe, i.e. the la ser beam width, on the electrophoretic mobility distribution as determ ined by electrophoretic light scattering in closed capillary cells is presented on a quantitative basis. The experimental mobility broadenin g as a function of the probe position in the capillary is in agreement with the broadening expected from the laser beam waist. A strategy fo r the accurate determination of average mobility and mobility distribu tions is proposed.