SIMULTANEOUS DETERMINATION OF THE CONSTITUENTS OF A REDOX COUPLE USING THE MODIFIED GRAN FUNCTION

Authors
MARYANOV BM GAVRILENKO MA
Citation
Bm. Maryanov et Ma. Gavrilenko, SIMULTANEOUS DETERMINATION OF THE CONSTITUENTS OF A REDOX COUPLE USING THE MODIFIED GRAN FUNCTION, Journal of analytical chemistry, 52(11), 1997, pp. 1026-1029
Citations number
14
Categorie Soggetti
Chemistry Analytical
Journal title
Journal of analytical chemistry → ACNP
ISSN journal
10619348
Volume
52
Issue
11
Year of publication
1997
Pages
1026 - 1029
Database
ISI
SICI code
1061-9348(1997)52:11<1026:SDOTCO>2.0.ZU;2-H
Abstract
A method is proposed for the simultaneous determination of the constit uents of a redox couple using data of potentiometric titration. It is based on the correlation and regression analysis of the modified Gran function. The method was validated using a model titration Fe(II)/Fe(I II)-K2Cr2O7 system. For comparable starting concentrations of oxidized and reduced iron species, the determination error does not exceed 0.6 %; RSD for Fe(II) and Fe(UI) are 0.1-0.2% and 1.5%, respectively.