Microarrayelectrodes for voltammetric and amperometric detection of organic pollutants

Area of Science:

• Electroanalytical Chemistry
• Environmental Science
• Materials Science

Background:

• Development of sensitive and selective electrochemical sensors is crucial for environmental monitoring.
• Existing methods for detecting organic pollutants can be limited by sensitivity, selectivity, or sample matrix compatibility.

Purpose of the Study:

• To develop novel disk and band shaped microarray electrodes (MAE) using gold and carbon materials.
• To evaluate the efficacy of these MAE for the electrochemical detection of diverse organic pollutants.
• To assess MAE performance in both organic and aqueous media under stationary and flowing conditions.

Main Methods:

• Fabrication of gold and carbon disk and band shaped microarray electrodes (MAE).
• Electrochemical analysis including differential pulse voltammetry (DPV), cyclic voltammetry (CV), and amperometry.
• Testing with various organic pollutants: selected pesticides, polyaromatic hydrocarbons (PAH), and phenols.
• Evaluation in both organic and aqueous sample matrices, under stationary and flowing conditions.

Main Results:

• Successful development of gold and carbon MAE with disk and band geometries.
• Demonstrated capability of MAE for electrochemical detection of pesticides, PAH, and phenols.
• MAEs showed potential for application in both organic and aqueous environments.
• Investigated performance under both static and dynamic (flowing) solution conditions.

Conclusions:

• Disk and band shaped gold and carbon MAE are effective tools for detecting organic pollutants.
• These MAE offer versatility for analysis in diverse media and flow conditions.
• The developed electrodes represent a promising advancement for environmental electrochemical sensing applications.