Simultaneous determination of the constituents of a redox couple using the modified gran function

Abstract

A method is proposed for the simultaneous determination of the constituents 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(III)-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(III) are 0.1-0.2% and 1.5%, respectively.

Original language	English
Pages (from-to)	1026-1029
Number of pages	4
Journal	Journal of Analytical Chemistry
Volume	52
Issue number	11
Publication status	Published - Nov 1997

ASJC Scopus subject areas

Analytical Chemistry

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title = "Simultaneous determination of the constituents of a redox couple using the modified gran function",

abstract = "A method is proposed for the simultaneous determination of the constituents 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(III)-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(III) are 0.1-0.2% and 1.5%, respectively.",

author = "Mar'yanov, {B. M.} and Gavrilenko, {M. A.}",

year = "1997",

month = nov,

language = "English",

volume = "52",

pages = "1026--1029",

journal = "Journal of Analytical Chemistry",

issn = "1061-9348",

publisher = "Maik Nauka-Interperiodica Publishing",

number = "11",

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AU - Mar'yanov, B. M.

AU - Gavrilenko, M. A.

PY - 1997/11

Y1 - 1997/11

N2 - A method is proposed for the simultaneous determination of the constituents 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(III)-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(III) are 0.1-0.2% and 1.5%, respectively.

AB - A method is proposed for the simultaneous determination of the constituents 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(III)-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(III) are 0.1-0.2% and 1.5%, respectively.

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