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Controlled-Potential-Based Electrochemical Sulfide Sensors: A Review
Syed Shaheen Shah1,2, Md Abdul Aziz1, Munetaka Oyama3
1Center of Research Excellence in Nanotechnology (CENT), King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia.
Chemical Record (New York, N.Y.)
|November 17, 2020
Summary
This review systematically examines controlled-potential techniques for electrochemical sulfide sensors, crucial for industrial applications and environmental monitoring. It highlights strategies, parameters, and future directions for sensitive and selective sulfide detection.
Area of Science:
- Electrochemistry
- Environmental Science
- Analytical Chemistry
Background:
- Sulfides are significant due to industrial applications and environmental toxicity.
- Electrochemical sensors offer simplicity, good detection limits, and selectivity for sulfide detection.
- A systematic review of controlled-potential techniques for sulfide sensing is lacking.
Purpose of the Study:
- To systematically review various strategies for detecting sulfides using controlled-potential electrochemical techniques.
- To analyze the efficiencies of developed sulfide sensors across different media and forms of sulfide.
- To emphasize key parameters influencing sensor performance and guide future research.
Main Methods:
- Literature review of controlled-potential electrochemical techniques for sulfide sensing.
- Analysis of sensing strategies, working electrodes, and detection media.
- Evaluation of sensor performance metrics: limit of detection (LOD), sensitivity, and linear detection range.
Main Results:
- Summarized diverse strategies for electrochemical sulfide detection.
- Detailed efficiencies of sensors in various media and for different sulfide forms.
- Highlighted critical parameters like pH, LOD, sensitivity, and linear detection range.
Conclusions:
- Controlled-potential techniques are effective for sulfide sensing.
- This review provides a foundation for developing practical sulfide sensors.
- Further research is recommended to advance sulfide sensor fabrication and application.
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