Issue 3, 2025

A highly sensitive facile plasmonic scheme for assessment of melamine in raw milk

Abstract

This work presents two novel devices with a microcontroller and two different light sensors, namely, Light Dependent Resistor (LDR) and Ambient Light Sensor (ALS), which can provide a quantitative output from the colorimetric variations of citrate capped borohydride reduced silver nanoparticles (AgNPs) and citrate capped gold nanoparticles (AuNPs) upon addition of melamine adulterated milk. The limit of detection (LOD) of the LDR setup with AgNPs and AuNPs was found to be 1.24 ppm and 1.68 ppm, respectively, and the corresponding recovery rates were 92.86% and 88.57%, respectively. The device fabricated with the ALS with AgNPs displayed a recovery rate of 97.14% with a LOD value of 0.64 ppm.

Graphical abstract: A highly sensitive facile plasmonic scheme for assessment of melamine in raw milk

Supplementary files

Article information

Article type
Paper
Submitted
26 Sep 2024
Accepted
23 Nov 2024
First published
25 Nov 2024

Anal. Methods, 2025,17, 552-561

A highly sensitive facile plasmonic scheme for assessment of melamine in raw milk

U. Das, A. Gayan and R. Biswas, Anal. Methods, 2025, 17, 552 DOI: 10.1039/D4AY01764A

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