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Cation Analysis Scheme by Differential Pulse Polarography

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Pilar García-Armada , José Losada and Santiago de Vicente-Pérez

Departamento de Ingenieria Quimica Industrial, Universidad Politecnica de Madrid, C. Jose Gutierrez Abascal 2, 28006, Madrid Spain

J. Chem. Educ., 1996, 73 (6), p 544

DOI: 10.1021/ed073p544

Publication Date (Web): June 1, 1996

Section:

History, Education, and Documentation

Abstract

Systematic identification and determination of ion mixtures in solution is a goal of analytical chemists. Differential Pulse Polarography (DPP) is sensitive and extremely selective. For these reasons DPP is widely used, and several procedures for the simultaneous determination of reduced groups of cations, and methods for the optimization of results are found in the literature.

This paper describes a systematic analysis of cation mixtures by DPP, using several different supporting electrolytes for the simultaneous determination of the maximum number of cations. The introduction of a cation analysis scheme of this type, which shows advantages over classical methods, is suitable for students in an electroanalytical chemistry course and other applications.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Analytical Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Qualitative Analysis

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This article has been cited by 2 ACS Journal articles (2 most recent appear below).

Electrochemical Removal of Metal Cations from Wastewater Monitored by Differential Pulse Polarography
Delphine Bruce , Alexander Kuhn and Neso Sojic
Journal of Chemical Education2004 81 (2), 255
- Electrochemical Removal of Metal Cations from Wastewater Monitored by Differential Pulse Polarography
  Delphine Bruce , Alexander Kuhn and Neso Sojic
  Journal of Chemical Education2004 81 (2), 255
  A simple experiment is described that exposes students to two important aspects of electrochemistry: its potential use in industrial technologies and its application for solving analytical problems. To illustrate these two points we have chosen to examine ...
  Abstract | Hi-Res PDF | PDF w/ Links
Environmental Redox Potential and Redox Capacity Concepts Using a Simple Polarographic Experiment
Alejandro Pidello
Journal of Chemical Education2003 80 (1), 68
- Environmental Redox Potential and Redox Capacity Concepts Using a Simple Polarographic Experiment
  Alejandro Pidello
  Journal of Chemical Education2003 80 (1), 68
  The redox status of a system may be analyzed in terms of the redox potential (redox intensity component) and the size of the pool of electrons able to be transferred (redox capacity component). In single chemical systems, both terms are thermodynamically ...
  Abstract | Hi-Res PDF | PDF w/ Links