[Evaluation of capillary chromatographic columns packed by electrokinetic packing method].
In this paper, a method for electrokinetic packing capillary columns is reported. A higher column effeciency was obtained by performing electrochromatography on electrokinetic packing columns. The highest column efficiency in number of theoretical plate per meter was more than 200000, corresponding to reduced plate height less than 2. The reproducibilities of the same column in different intervals and different columns prepared from the same or different batches were compared. The relative standard deviations of the number of theoretical plate and retention time were less than 10% and 8%, respectively. The results indicated that high column efficiency and good reproducibility can be obtained on these new capillary packed columns.
Li
Z
Z
You Ni Te Unimicro Technologies Co. Ltd., Tongliao City, Inner Mongolia, 028000.
You
H
H
Hu
S
S
Wei
W
W
Luo
G
G