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Gas Chromatography: Types of Detectors-II

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...

Amperometry: Overview

Amperometry: Overview

Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...

Types of Reversible Electrodes

Types of Reversible Electrodes

For electrode reversibility to be maintained, all the reactants and products involved in the half-reaction must be present at the electrode. There are several types of reversible electrodes (half-cells).In metal-metal-ion electrodes, a metal balances electrochemically with a solution of its own ions. Examples are Cu2+|Cu and Zn2+|Zn. Metals that react with the solvent, like group 1 and most group 2 metals, which react with water, and zinc, which reacts with aqueous acidic solutions, cannot be...

Gas Chromatography: Types of Detectors-I

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There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
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Photoluminescence: Applications

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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...

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Related Experiment Video

Updated: Jun 13, 2026

Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System

Luminescence Lifetime Imaging of O₂ with a Frequency-Domain-Based Camera System

Published on: December 16, 2019

Reversible oxygen gas sensor based on electrochemiluminescence.

Lihua Zhang¹, Francis Tsow, Erica Forzani

¹Center for Bioelectronics & Biosensors, Biodesign Institute, Arizona State University, Tempe, Arizona, USA.

Chemical Communications (Cambridge, England)

|April 14, 2010

Summary

A new oxygen gas sensor uses electrochemiluminescence for real-time environmental monitoring. This robust sensor offers sensitive, selective, and reversible detection of oxygen concentration.

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Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System

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Chemiluminescence-based Assays for Detection of Nitric Oxide and its Derivatives from Autoxidation and Nitrosated Compounds

Chemiluminescence-based Assays for Detection of Nitric Oxide and its Derivatives from Autoxidation and Nitrosated Compounds

Published on: February 16, 2022

Area of Science:

Electrochemistry
Analytical Chemistry
Materials Science

Background:

Oxygen sensors are crucial for environmental monitoring and industrial processes.
Existing sensors may face limitations in sensitivity, selectivity, or real-time response.
Developing novel sensing platforms is essential for improved performance.

Purpose of the Study:

To develop a novel and robust oxygen gas sensor.
To utilize the electrochemiluminescence of tris(2,2'-bipyridine)ruthenium(III) (Ru(bpy)3(3+/+)) ion annihilation in an ionic liquid for sensing.
To demonstrate real-time, selective, sensitive, and reversible oxygen detection.

Main Methods:

Fabrication of an electrochemiluminescent sensor system.
Utilizing ionic liquids as a medium for Ru(bpy)3(3+/+) ion annihilation.
Employing electrochemiluminescence detection for oxygen quantification.
Testing sensor performance for selectivity, sensitivity, and reversibility.

Main Results:

Successful demonstration of a novel electrochemiluminescence-based oxygen sensor.
Achieved real-time detection of environmental oxygen concentrations.
Exhibited selective, sensitive, and reversible sensing performance.
Validated the robustness of the sensor in ionic liquid medium.

Conclusions:

The developed sensor offers a promising new method for oxygen gas sensing.
The electrochemiluminescence approach in ionic liquids provides a robust platform for real-time environmental monitoring.
The sensor's performance characteristics indicate its potential for practical applications.