Detection and quantification of chitosan aggregates by pressure-assisted capillary zone electrophoresis
- Autores: Dzherayan T.1, Vanifatova N.1, Burmistrov A.1, Lazareva E.2, Rudnev A.1
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Afiliações:
- Vernadsky Institute of Geochemistry and Analytical Chemistry
- Faculty of Chemistry
- Edição: Volume 72, Nº 3 (2017)
- Páginas: 309-315
- Seção: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/182346
- DOI: https://doi.org/10.1134/S1061934817030042
- ID: 182346
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Resumo
An approach to the detection and determination of chitosan aggregates in acetic acid solutions is proposed using pressure-assisted capillary zone electrophoresis. Processes of chitosan aggregation are studied depending on the composition of dispersion medium and storage time. The presence of several species of positively charged chitosan aggregates is revealed for the first time. Particle sizes in the range 20–2500 nm are determined by scanning electron microscopy and static and dynamic light scattering. The dependence of the shape of electropherograms on particle size distribution obtained under the same conditions is found. A trend to changing electrophoretic mobility depending on the size of the aggregate is observed, which enables the approximate evaluation of the polydispersity of chitosan solutions. Chitosan is used for the effective dynamic modification of capillaries, which does not require the introduction of a modifier into the background electrolyte.
Sobre autores
T. Dzherayan
Vernadsky Institute of Geochemistry and Analytical Chemistry
Autor responsável pela correspondência
Email: dzherajan@mail.ru
Rússia, Moscow, 119991
N. Vanifatova
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: dzherajan@mail.ru
Rússia, Moscow, 119991
A. Burmistrov
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: dzherajan@mail.ru
Rússia, Moscow, 119991
E. Lazareva
Faculty of Chemistry
Email: dzherajan@mail.ru
Rússia, Moscow, 119991
A. Rudnev
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: dzherajan@mail.ru
Rússia, Moscow, 119991
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