Pyridoxal conjugated gold nanoparticles for distinct colorimetric detection of chromium(III) and iodide ions in biological and environmental fluids

Shilpa Bothra, Rajender Kumar, Suban K. Sahoo

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

We developed pyridoxal conjugated gold nanoparticles (CAPy-AuNPs) for the selective colorimetric detection of Cr3+ and iodide ions in an aqueous medium. The CAPy decorated AuNPs showed selective aggregation in the presence of Cr3+ and I- ions, resulting in a distinct color change from red to blue, which was in response to the surface plasmon resonance absorption of dispersed or aggregated nanoparticles. An assay was used to detect the concentrations of Cr3+ and I- in real samples, such as liquid milk, milk power, river and tap water, and urine, and the recoveries ranged from 90 to 123.6%, indicating that the method could be used for extensive practical applications in complicated environmental and biological samples.

Original languageEnglish
Pages (from-to)7339-7346
Number of pages8
JournalNew Journal of Chemistry
Volume41
Issue number15
DOIs
StatePublished - 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

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