Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Voltammetric Techniques: Linear-Scan (E vs Time)

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...

Interfacial Electrochemical Methods: Overview

Interfacial Electrochemical Methods: Overview

Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current passing...

Debye–Huckel–Onsager Conductance Equation

Debye–Huckel–Onsager Conductance Equation

The Debye-Hückel-Onsager equation is a cornerstone of physical chemistry, providing a method to determine the molar conductance (Λm) and molar conductance at infinite dilution (Λ°m) for uni-univalent electrolytes.Uni-univalent electrolytes are electrolytes that dissociate in solution to produce one cation with a +1 charge and one anion with a –1 charge per formula unit.This equation addresses two crucial phenomena: the asymmetry effect and the electrophoretic effect. According to this equation,...

Dialysis

Dialysis

Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...

Capillary Electrophoresis: Applications

Capillary Electrophoresis: Applications

Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...

Fast Reactions

Fast Reactions

Fast reactions occurring in times shorter than the time needed to mix reactants pose a unique challenge for investigation. In a liquid-phase continuous-flow system, reactants A and B are swiftly pushed into the mixing chamber, where mixing occurs within 1 ms. The reaction mixture then flows through an observation tube, and one measures light absorption to determine species concentrations at various points of the tube. This method is most appropriate when relatively large volumes of reactants...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Bandage-Type Autocatalytic PdCl<sub>2</sub>‑Containing Film as Visual Hydrogen Sensor for Noninvasive Monitoring of Mg-Alloy Biodegradation.

ACS applied optical materials·2026

Same author

Fluorescence Signatures of Rare Earth Metals during Precipitation in Various Conditions.

Langmuir : the ACS journal of surfaces and colloids·2026

Same author

Raman Spectroscopic In Situ Monitoring of Highly Turbid Media.

Analytical chemistry·2026

Same author

Automated pH Monitoring and Control of TALSPEAK and Advanced TALSPEAK Processes.

Analytical chemistry·2025

Same author

Real-Time Automated pH Control within Batch Processes Relying on Raman pH Measurement.

ACS omega·2025

Same author

Developing Fluorescence-Based Sensors to Support Rare Earth Element Separation.

ACS sensors·2025

Search research articles

Related Experiment Video

Updated: Jun 2, 2026

Adapting Taylor Dispersion to Measure the Dispersion Coefficient of Electrolyte Solutions via an Accessible Microfluidic Setup

Adapting Taylor Dispersion to Measure the Dispersion Coefficient of Electrolyte Solutions via an Accessible Microfluidic Setup

Published on: October 7, 2025

Semi-infinite linear diffusion spectroelectrochemistry on an aqueous micro-drop.

Cynthia A Schroll¹, Sayandev Chatterjee, William R Heineman

¹Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, USA.

Analytical Chemistry

|April 19, 2011

Summary

We developed an easy and economical micro-drop technique for spectroelectrochemistry. This method investigates redox-active compounds, correlating spectroscopic properties with thermodynamic potentials on a small scale.

More Related Videos

Dry Film Photoresist-based Electrochemical Microfluidic Biosensor Platform: Device Fabrication, On-chip Assay Preparation, and System Operation

Dry Film Photoresist-based Electrochemical Microfluidic Biosensor Platform: Device Fabrication, On-chip Assay Preparation, and System Operation

Published on: September 19, 2017

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Published on: August 4, 2023

Related Experiment Videos

Last Updated: Jun 2, 2026

Adapting Taylor Dispersion to Measure the Dispersion Coefficient of Electrolyte Solutions via an Accessible Microfluidic Setup

Adapting Taylor Dispersion to Measure the Dispersion Coefficient of Electrolyte Solutions via an Accessible Microfluidic Setup

Published on: October 7, 2025

Dry Film Photoresist-based Electrochemical Microfluidic Biosensor Platform: Device Fabrication, On-chip Assay Preparation, and System Operation

Dry Film Photoresist-based Electrochemical Microfluidic Biosensor Platform: Device Fabrication, On-chip Assay Preparation, and System Operation

Published on: September 19, 2017

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Published on: August 4, 2023

Area of Science:

Electrochemistry
Spectroscopy
Analytical Chemistry

Background:

Spectroelectrochemistry is crucial for studying redox-active compounds.
Traditional methods can be complex and require large sample volumes.

Purpose of the Study:

To present a novel, simple, and cost-effective semi-infinite diffusion spectroelectrochemistry technique.
To enable small-scale investigation of spectroelectrochemical behavior and thermodynamic potentials.

Main Methods:

Developed an aqueous micro-drop technique for spectroelectrochemistry.
Employed cyclic voltammetry, UV-visible absorbance, and luminescence spectroscopies.
Utilized absorbance-based [Fe(CN)6](3-/4-) and emission-based [Re(dmpe)3](2+/+) probes.

Main Results:

Successfully demonstrated the feasibility of spectroelectrochemistry on an aqueous micro-drop.
Correlated spectroscopic properties with thermodynamic potentials for the tested probes.
Validated the technique's applicability for both absorbance and emission-based probes.

Conclusions:

The aqueous micro-drop technique offers an accessible and economical approach for spectroelectrochemical analysis.
This method is suitable for small-scale investigations of redox-active compounds.
Provides a valuable tool for correlating spectroscopic data with electrochemical potentials.