[Determination of particle size distribution of nano-particles by capillary zone electrophoresis].
A new method was established for the determination of the size distribution of nano-particles by capillary zone electrophoresis (CZE). The data processing method for acquiring size distribution from primary electropherogram was investigated. The relative standard deviation of migration time was deduced by using dimethyl sulfoxide (DMSO) as an internal standard. Scattering effect of nano-particles was studied and a correction equation was established to correct this influence. The experimental results showed that the correction method was effective. After correction, the measuring results for the mixed samples with different mass ratios of PS50 and PS125 were almost the same with their theoretical values and the relative deviation was reduced from 35% to 5%. This method for the determination of size distribution is satisfactory.
Xue
Yan
Y
Research Institute of Petroleum Processing, China Petroleum & Chemical Corporation, Beijing 100083, China. xueyan01@mail.china.com
Yang
Haiying
H
Yang
Yongtan
Y
D004121:Dimethyl Sulfoxide / Q000737:chemistry; D019075:Electrophoresis, Capillary / Q000379:methods; D007840:Latex / Q000737:chemistry; D036103:Nanotechnology; D010316:Particle Size; D011137:Polystyrenes / Q000737:chemistry*
D007840:Latex; D011137:Polystyrenes; D004121:Dimethyl Sulfoxide