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Related Concept Videos

Voltammetry: Stripping Methods01:13

Voltammetry: Stripping Methods

Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
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Controlled-Potential Coulometry: Electrolytic Methods

Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential ensures...
Potentiometry: Overview01:06

Potentiometry: Overview

Potentiometry is an analytical technique that measures the potential difference between two electrodes in an electrochemical cell without drawing any significant current that could alter the solution's composition. This method employs an indicator electrode, which exchanges electrons with the analyte solution, and a reference electrode with a constant potential. Each electrode is immersed in a solution comprised of two half-cells. In a conventional setup, the reference electrode serves as the...
Potentiometric Titration: Overview01:31

Potentiometric Titration: Overview

Potentiometric titration is a quantitative analytical technique that determines the concentration of an analyte by measuring the potential difference between the two electrodes in the solution. The endpoint of a potentiometric titration is the point at which there is a significant change in the potential difference. It occurs when the stoichiometric reaction between the analyte and the titrant is complete. The endpoint is usually determined graphically by plotting the measured potential...
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
Voltammetric Techniques: Linear-Scan (E vs Time)01:12

Voltammetric Techniques: Linear-Scan (E vs Time)

Polarography is a classical voltammetric technique used to analyze electrochemical reactions. This method applies a linear potential sweep to a dropping mercury electrode (DME), and the resulting current is measured. A dropping mercury electrode is commonly used as the working electrode in polarography. It consists of a capillary tube filled with mercury, where the tiny droplet forms at the tip. This droplet continuously drops from the capillary, creating a new electrode surface for each...

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Related Experiment Video

Updated: Jun 28, 2026

Potentiodynamic Corrosion Testing
08:43

Potentiodynamic Corrosion Testing

Published on: September 4, 2016

Potentiometric stripping analysis automation.

A Cladera1, J M Estela, V Cerda

  • 1Department of Chemistry, University of the Balearic Islands, E-07071 Palma de Mallorca, Spain.

Talanta
|July 1, 1990
PubMed
Summary
This summary is machine-generated.

A new semi-automatic system for potentiometric stripping analysis (PSA) enables precise elemental detection at ng/ml levels. This automated system controls pre-electrolysis and data processing for enhanced analytical efficiency.

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Area of Science:

  • Analytical Chemistry
  • Electrochemistry

Background:

  • Potentiometric stripping analysis (PSA) is a sensitive electrochemical technique.
  • Accurate elemental quantification requires precise control over analytical parameters.

Purpose of the Study:

  • To develop and describe a semi-automatic system for potentiometric stripping analysis.
  • To enable high-sensitivity elemental determination at the nanogram per milliliter level.

Main Methods:

  • Utilized a potentiostat, a pH-meter with RS232C interface, and a personal computer.
  • Developed custom software for automated control of pre-electrolysis time and data acquisition.
  • Implemented manual and automatic data treatment options.

Main Results:

  • The system allows for automatic control of critical analytical steps.
  • Achieved elemental determination at the sensitive ng/ml level.
  • Demonstrated the capability for both manual and automated data processing.

Conclusions:

  • The described semi-automatic PSA system offers enhanced control and efficiency.
  • The system is suitable for sensitive elemental analysis in various applications.
  • Software integration facilitates streamlined data acquisition and treatment.