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Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
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Updated: Jun 28, 2026

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

A liquid state Hg(2+)-sensitive electrode.

G E Baiulescu¹, V V Coşofret

¹Department of Analytical Chemistry, Institute of Chemistry, Polytechnic Institute of Bucharest, Spl. Independences 89, 7000 Bucharest, Romania.

|September 1, 1976

Summary

A new liquid-state electrode sensitive to mercury ions (Hg2+) was developed using a specific chelate membrane. This electrode demonstrates a wide linear response range and rapid detection, proving effective for mercury titrations.

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Published on: June 1, 2012

Area of Science:

Electrochemistry
Analytical Chemistry
Materials Science

Background:

Mercury ions (Hg2+) pose significant environmental and health risks.
Accurate detection and quantification of Hg2+ are crucial for environmental monitoring and industrial processes.
Development of selective and sensitive electrochemical sensors is an ongoing area of research.

Purpose of the Study:

To construct and characterize a novel liquid-state electrode for the detection of mercury ions (Hg2+).
To evaluate the performance of the electrode in terms of response range, slope, and response time.
To assess the applicability of the electrode in potentiometric titrations involving Hg2+.

Main Methods:

Fabrication of a liquid-state membrane electrode.
The membrane composition utilizes the Hg(2+) chelate of diketohydrindylidene-diketohydrindamine (DYDA) dissolved in chloroform.
Electrode characteristics were determined through electrochemical measurements and potentiometric titrations.

Main Results:

The developed electrode exhibits a linear response range for Hg(2+) from 10(-1) M to 10(-5) M.
A consistent slope of 31 mV/decade was observed within the linear response range.
The electrode shows a rapid response time, on the order of seconds, particularly in concentrated Hg(2+) solutions.
Successful application in potentiometric titrations involving Hg(2+) was demonstrated.

Conclusions:

A functional liquid-state Hg(2+)-sensitive electrode has been successfully constructed.
The electrode offers a wide linear response and fast detection capabilities for mercury ions.
This sensor is a promising tool for quantitative analysis of Hg(2+) in various applications, including potentiometric titrations.