A High-Performance Film for Detecting Malachite Green

Area of Science:

• Analytical Chemistry
• Materials Science
• Food Safety

Background:

• Residual malachite green (MG) in aquatic products presents a significant human health risk.
• Existing analytical methods for MG detection often lack the required speed and accuracy.
• There is a critical need for sensitive and reliable detection techniques for MG in seafood.

Purpose of the Study:

• To develop a high-performance film for the sensitive and rapid detection of malachite green (MG).
• To create a nanonetwork-structured film utilizing silver nanoparticles for enhanced MG detection.
• To validate the film's efficacy in accurately determining MG levels in aquatic products.

Main Methods:

• Fabrication of a high-performance film using a nano-network structure as the sensing substrate.
• Modification of the film surface with uniformly dispersed silver nanoparticles to induce localized surface plasmon resonance (LSPR).
• Utilizing the high specific surface area of the nanonetwork for efficient MG molecule enrichment.

Main Results:

• The developed film demonstrated a highly sensitive detection of MG with a low limit of detection (LOD) of 8.8 pM.
• A linear detection range for MG was established from 10 to 5000 pM.
• The film successfully achieved rapid and accurate determination of MG in actual aquatic product samples.

Conclusions:

• The nanonetwork-structured film offers a reliable and sensitive solution for trace MG detection in aquatic products.
• This technology shows excellent potential for practical application in food safety monitoring.
• The developed method addresses the urgent need for fast and accurate analytical techniques for MG in seafood.