ArticleSpectrochimica acta. Part A, Molecular and biomolecular spectroscopy2020
Simultaneous colorimetric and surface-enhanced Raman scattering detection of melamine from milk.
Article in Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 53 citations in OpenAlex.
- Maleic acid assisted facile plasmonic chip for assessment of adulterants in cattle milk.RSC advances · 2026Article
- Self-Assembled Lubricin (PRG-4)-Based Biomimetic Surface-Enhanced Raman Scattering Sensor for Direct Droplet Detection of Melamine in Undiluted Milk.Biosensors · 2024Article
- Paper-Based Flexible Nanoparticle Hybrid Substrate for Qualitative and Quantitative Analysis of Melamine in Powder Milk by SERS.ACS omega · 2024Article
- Fabrication of Efficient and Non-Enzymatic Electrochemical Sensors for the Detection of Sucrose.Sensors (Basel, Switzerland) · 2023Article
- Ultra-Sensitive, Rapid and On-Site Sensing Harmful Ingredients Used in Aquaculture with Magnetic Fluid SERS.Biosensors · 2022Article
- Flexible SERS substrate of silver nanoparticles on cotton swabs for rapidNanoscale advances · 2022Article
- Review
- Rapid Detection of Nonprotein Nitrogen Adulterants in Milk Powder Using Point-Scan Raman Hyperspectral Imaging Technology.ACS omega · 2022Article
- Visual and Optical Absorbance Detection of Melamine in Milk by Melamine-Induced Aggregation of Gold Nanoparticles.Nanomaterials (Basel, Switzerland) · 2021Article
- Detection of melamine based on the suppressed anodic response of uric acid by a Au-Ag nanoparticles modified glassy carbon electrode.Journal of food and drug analysis · 2020Article
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Authors and funding
8 authors at 2 institutions in 2 countries.
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Abstract
We present a dual-mode readout sensing mechanism that can effectively distinguish true and false-positive signals of melamine in milk by combining colorimetric analysis and surface-enhanced Raman scattering (SERS) spectroscopy. The colorimetry analysis takes advantage of color change of plasmonic nanoparticles upon the presence of melamine. We discovered that Ag colloids with 20 nm diameter was suitable for both colorimetric and SERS methods. However, the colorimetric method may present false-positive signals with the presence of interfering compounds. SERS spectroscopy can overcome this limitation and directly obtain signature spectra from the same plasmonic NPs used for the colorimetric assay without any modification. Melamine/s-triazine can be reliably differentiated by probing the SERS spectra based on surface-selection rules. The limit of detection of sensing melamine from milk by this method could reached to 0.05 ppm. Therefore, the combination of colorimetric and SERS method not only allows for rapid preliminary screening of melamine by naked eyes, but also greatly reduces false-positive signals by surface selection rules in SERS.
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