Carbon dot-modified silver nanoparticle electrochemical sensors for the ultrasensitive detection of total malachite green and leucomalachite green residues in fish

Key Points

• The aim is to develop an ultrasensitive sensor for detecting malachite green and leucomalachite green residues in fish.
• Synthesis of silver nanoparticle-covered carbon dots
• Modification of gold electrode with nanoparticles
• Electrochemical detection techniques applied to fish samples
• Achieved ultrasensitive detection limits for both malachite green and leucomalachite green
• Demonstrated efficacy of sensor in identifying chemical residues in fish samples