Overcoming Challenges in Electrochemical Sensing: Toward Continuous Monitoring.

Area of Science:

• Electrochemistry
• Materials Science
• Sensor Technology

Background:

• Continuous monitoring requires robust electrochemical sensors, but field deployment faces challenges like signal drift, fouling, and low selectivity.
• Existing sensors struggle with real-world conditions, limiting their reliability and longevity outside laboratory settings.

Purpose of the Study:

• To review emerging strategies for overcoming limitations in electrochemical sensors for continuous monitoring.
• To provide a roadmap for translating electrochemical sensor technology into reliable field devices.

Main Methods:

• Examining advanced materials and surface modifications (e.g., permselective membranes, MIPs, nanostructures).
• Discussing antifouling coatings, self-healing electrodes, and dynamic polymer systems for durability.
• Presenting machine learning and chemometric approaches for signal processing and calibration.
• Highlighting innovations in microfluidics and sampling for system-level challenges.

Main Results:

• Advanced materials and surface modifications improve selectivity and reduce interference.
• Antifouling strategies and self-healing components enhance sensor durability and lifespan.
• Machine learning effectively compensates for signal drift and improves data interpretation.
• Microfluidic and advanced sampling techniques address system-level integration challenges.

Conclusions:

• Multidisciplinary strategies are crucial for developing reliable electrochemical sensors for continuous monitoring.
• These advancements pave the way for autonomous sensing in environmental, biomedical, and industrial fields.