Biochemical and Rapid Paper Sensory Detection of Heavy Metals in Milk Based on Biosynthesized Silver Nanoparticles
- Title
- Biochemical and Rapid Paper Sensory Detection of Heavy Metals in Milk Based on Biosynthesized Silver Nanoparticles
- Creator
- Tom, Mia; Pradeep, Sheethal; Tomson, Majesh
- Description
- Milk is an emulsion of proteins and fats in water that contributes to a nutritious diet and enhances our immune system. However, contamination of heavy metals in milk due to an increase in industrialization and urbanization can be a serious threat to human health. This study focused on the rapid detection of heavy metals particularly lead and mercury in milk using biochemical assays as well as paper-based colorimetric sensor based on green synthesized silver nanoparticles (AgNPs) from leaf extract of Hemigraphis colorata. Biochemical assays such as the lead chromate test and sodium hydroxide test were employed to detect lead and mercury in milk samples. The biogenic AgNPs were characterized by UVVis spectroscopy, scanning electron microscope, Fourier transform infrared spectroscopy, energy dispersive X-ray analysis (EDX) and X-ray diffraction. The unique properties of silver nanoparticles (AgNPs) like surface plasma resonance (SPR), large surface area and visible colour change upon aggregation when metal ions interact, enable them to detect heavy metals. This is a portable and affordable method of detection that ensures safer milk consumption and sustainable environmental practices. 2025 Asian Publication Corporation. All rights reserved.
- Source
- Asian Journal of Chemistry;Volume;37;Issue;5;pp.1183-1190
- Date
- 01-01-2025
- Publisher
- Asian Publication Corporation
- Subject
- Colorimetric sensor; Green synthesis; Heavy metals; Milk; Silver nanoparticles
- Coverage
- Tom M., Department of Life Siences, School of Sciences, Christ University, Bengaluru, 560029, India; Pradeep S., Department of Life Siences, School of Sciences, Christ University, Bengaluru, 560029, India; Tomson M., Department of Life Siences, School of Sciences, Christ University, Bengaluru, 560029, India
- Rights
- All Open Access; Gold Open Access
- Relation
- ISSN: 9707077; CODEN: AJCHE
- Format
- online
- Language
- English
- Type
- Article
Collection
Citation
Tom, Mia; Pradeep, Sheethal; Tomson, Majesh, “Biochemical and Rapid Paper Sensory Detection of Heavy Metals in Milk Based on Biosynthesized Silver Nanoparticles,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/23235.