Published August 2000 | Version v1
Journal article Metadata-only

Potentiometric parameters of a PVC-NaV6O15 - graphite electrode

Creators

  • 1. Saratovskij Gosudarstvennyj Tekhuniversitet (Russian Federation)

Description

The behavior of the film electrodes on the base of polyvinyl chloride (PVC), modified by bronze of the NaV6O15 (Na0.33V2O5) composition is studied. The electrodes are selective to the pentavalent vanadium ions in acid and neutral media. It is shown, that the sensitive area of concentrations is within the frames of 10-2-10-5 M. The potential dependence on concentration is subjected to the Hernst equation with the 59.4±0.8 mV/pc angular coefficient corresponding to the VO2+ → VO2+ single electron transition by ph 1.5-2.0 (cation function). Dependence of the potential on concentration, corresponding to the VO3- → VO2+ transition (anion function), the angular coefficient -58.0±0.7 mV/pc, is observed by ph 5.0-6.0

Abstract (Russian)

Исследвоано поведение пленочных электродов, на оснвое поливинилхлорида (ПВХ), модифицированных бронзой состава NaV6O15 (Na0.33V2O5). Элеткроды селективны к ионам пятивалентного ванадия в кислой и нейтральной средах. Показано, что чувствительная область концентраций лежит в пределах 10-2-10-5 М. Зависимость потенциала от концентрации подчиняется уравнению Нернста с угловым коэффициентом 59,4±0,8 мВ/рс, соответствующим одноэлектронному переходу VO2+ → VO2+ при рН 1,5-2,0 (катионная функция). При рН 5,0-6,0 наблюдается зависимость потенциала от концентрации, соответствующая переходу VO3- → VO2+ (анионная функция), угловой коэффициент -58,0 ± 0,7 мВ/рс

Additional details

Additional titles

Original title (Russian)
Потенциометрические характеристики композитного электрода PVKh-NaV

Publishing Information

Journal Title
Ehlektrokhimiya
Journal Volume
36
Journal Issue
8
Journal Page Range
p. 945-950
ISSN
0424-8570
CODEN
ELKKAX

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
32043930
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AQUEOUS SOLUTIONS; CHEMICAL COMPOSITION; COMPOSITE MATERIALS; CONCENTRATION RATIO; ELECTRIC POTENTIAL; ELECTROCHEMISTRY; ELECTRODES; GRAPHITE; ION SELECTIVE ELECTRODE ANALYSIS; PH VALUE; PVC; SENSITIVITY; SODIUM OXIDES; VANADATES; VANADIUM OXIDES
Descriptors DEC
ALKALI METAL COMPOUNDS; CARBON; CHALCOGENIDES; CHEMICAL ANALYSIS; CHEMISTRY; CHLORINATED ALIPHATIC HYDROCARBONS; DISPERSIONS; ELEMENTS; HALOGENATED ALIPHATIC HYDROCARBONS; HOMOGENEOUS MIXTURES; MATERIALS; MINERALS; MIXTURES; NONMETALS; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC POLYMERS; OXIDES; OXYGEN COMPOUNDS; POLYMERS; POLYVINYLS; SODIUM COMPOUNDS; SOLUTIONS; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS

Optional Information

Notes
18 refs.; 3 tabs.; 7 figs.