Comparison of potential of capillary zone electrophoresis and Malvern's improved laser Doppler velocimetry for characterisation of silica nanomaterials in aqueous media
by N.G. Vanifatova; B.Ya. Spivakov; A. Kamyshny
International Journal of Nanoparticles (IJNP), Vol. 4, No. 4, 2011

Abstract: Two silica certified reference nanomaterials containing 50- and 100-nm particles were used for comparing electrophoretic mobility measurements by capillary zone electrophoresis and Malvern's improved laser Doppler velocimetry under the same experimental conditions. Phosphate buffer solutions with concentrations of 2.5 and 5.0 mM, at pH 8.5 and 6.2 were used for preparation of dispersions. These dispersions were stable sufficiently to perform measurements. The values of absolute electrophoretic mobility determined by a Malvern's improved laser Doppler velocimetry were found to be lower than those determined by a capillary zone electrophoresis. In addition, the results of size measurements by dynamic light scattering and scanning electronic microscopy were compared. The reasons for differences in measured values are discussed.

Online publication date: Fri, 13-Mar-2015

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Nanoparticles (IJNP):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com