A Novel Disposable Bamboo Biochar-Based Electrochemical Sensor for Detecting the Nonsteroidal Anti-Inflammatory Drug...

Area of Science:

• Electrochemistry
• Materials Science
• Environmental Science

Background:

• Flufenamic acid (FFA) is a common pharmaceutical pollutant.
• Accurate detection of FFA is crucial for environmental monitoring.
• Existing detection methods often lack sensitivity, cost-effectiveness, or environmental friendliness.

Purpose of the Study:

• To develop a novel electrochemical sensor for sensitive FFA detection.
• To utilize bamboo biochar as a modifier for screen-printed electrodes (SPEs).
• To evaluate the sensor's performance and applicability in real-world water samples.

Main Methods:

• Fabrication of a bamboo biochar-modified screen-printed electrode (SPE/BCB).
• Electrochemical characterization and performance evaluation of the SPE/BCB sensor.
• Testing the sensor's selectivity and accuracy in complex aqueous matrices (river and tap water).

Main Results:

• The SPE/BCB sensor demonstrated high sensitivity (2.30 μA/μmol L⁻¹) and an ultralow detection limit (1.3 nmol L⁻¹).
• A broad linear range (0.05-13.32 μmol L⁻¹) was achieved.
• The sensor exhibited excellent selectivity against common organic interferents and accurate quantification in river and tap water.

Conclusions:

• The SPE/BCB sensor provides a cost-effective, sensitive, and environmentally friendly platform for FFA detection.
• This sensor shows significant potential for effective environmental monitoring of pharmaceutical pollutants.
• Bamboo biochar modification enhances electrochemical performance and offers a sustainable approach.