Thesis-1982-Cripps.pdf (3.92 MB)
The voltammetric determination of phosphate and silicate in washing powders
thesis
posted on 2017-10-16, 12:35 authored by G.C. CrippsIn this work previous static and flow injection voltammetric
methods for the determination of phosphate and silicate have been
developed for the determination of total phosphate and soluble silicate
in commercial washing powders. The method is based on the electrochemical
reduction of heteropoly acids at + 0.3 v. (vs. SCE) at a
glassy carbon electrode. Anionic detergents are a constituent of
washing powders and are found to reduce markedly the differential pulse voltammetric peak currents obtained for 12-molybdophosphate and 12-molybdosilicate in aqueous solutions. Use of a sample solution
40–50% in ethanol was found to prevent this interference. By this
method soluble silicate has been determined in unhydrolysed solutions
of washing powders and total phosphate in hydrolysed solutions using
both static and flow injection modes. [Continues.]
History
School
- Science
Department
- Chemistry
Publisher
© G.C. CrippsPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 2.5 Generic (CC BY-NC-ND 2.5) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by-nc-nd/2.5/Publication date
1982Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en