Determination of osmium in mineral raw materials by the method of kinetic inversion voltammetry

N. A. Kolpakova, O. V. Kaminskaya, E. V. Yagovkina

Результат исследования: Материалы для журналаСтатья

Аннотация

A new hybrid version of inversion voltammetry, the method of kinetic inversion voltammetry (KIV), is proposed and exemplified by an analysis of osmium. Electrooxidation of an Os + OsO2 film, predeposited on the surface of an indifferent electrode, is shown to generate "inverse" peaks in an anodic voltammogram recorded in an acid electrolyte in the presence of hydrogen peroxide. In the KIV method, osmium can be analyzed without preliminary separation of it from a complex matrix. The lower limit for determination of osmium against the background solution 0.1 M H2SO4 + 30% H2O2 is 8 × 10-10 M (sr = 8%). The detection limit (3σ-test) is 4.7 × 10-10 M.

Язык оригиналаАнглийский
Страницы (с... по...)225-228
Количество страниц4
ЖурналIndustrial Laboratory
Том64
Номер выпуска4
Статус публикацииОпубликовано - апр 1998

    Fingerprint

ASJC Scopus subject areas

  • General
  • Chemical Engineering(all)

Цитировать