Sensitive Coatings Based on Molecular-Imprinted Polymers for Triazine Pesticides' Detection.

Area of Science:

• Analytical Chemistry
• Materials Science

Background:

• Triazine pesticides, such as atrazine, pose risks to human health.
• Accurate detection of these pesticides is crucial for environmental monitoring and safety.

Purpose of the Study:

• To develop sensitive and selective sensors for detecting triazine pesticides and their derivatives.
• To utilize molecular imprinting technology for creating artificial receptors.

Main Methods:

• Development of imprinted polymers using acrylate and methacrylate monomers.
• Optimization of polymer composition (methacrylic acid and ethylene glycol dimethacrylate) for non-covalent interactions.
• Integration of the sensitive coating with a quartz crystal microbalance transducer.

Main Results:

• A sensitive coating demonstrated a maximum sensor response of 546 Hz.
• The molecularly imprinted copolymer showed reversible sensor responses for atrazine, its metabolites, and structural analogs.
• The developed sensor exhibited stable selectivity, suitable for pattern recognition.

Conclusions:

• Molecular imprinting technology effectively creates artificial receptors for triazine pesticide detection.
• The developed sensor offers a sensitive, selective, and reversible method for monitoring triazine compounds.
• The sensor's stable selectivity pattern supports its use in advanced detection and recognition procedures.