A RAPIDLY COLORIMETRIC DETECTION OF ARSENIC AND MERCURY IONS BASED ON SURFACE PLASMON RESONANCE ABSORBANCES OF FUNCTIONALIZED AuNPs IN COSMETICS
Year: 2024
Type: article
Abstract: In this study, a novel colorimetric method is developed for the detection of arsenic and mercury ions, utilizing the surface plasmon resonance (SPR) properties of AuNPs ([Formula: see text] nanoparticles) functionalized with APT ([Formula: see text]-(3-aminophenyl) tetrazole). Theoretical calculations confirm the findings from UV–Visible spectroscopy and transmission electron microscopy analyses, indicating that APT is electrostatically bound to the surfaces of the AuNPs. The introduction of [Formula: see text] and [Formula: see text] ions triggers a coordination reaction with APT, resulting in a reduced interparticle distance among the AuNPs. This change leads to a visible color shift of the solution from wine red to bluish-gray. The detection limits for [Formula: see text] and [Formula: see text] are determined to be 0.6 and 0.24 [Formula: see text] g⋅[Formula: see text], respectively, distinguishable to the naked eye. A robust linear correlation is observed between the absorbance ratios and the ion concentrations, with correlation coefficients ([Formula: see text]) of 0.990 for [Formula: see text] and 0.998 for [Formula: see text]. These findings demonstrate that AuNPs functionalized with APT are effective for the quantitative analysis of arsenic and mercury ions. The sensor exhibits high selectivity and excellent resistance to interference, indicating its potential applicability for monitoring [Formula: see text] and [Formula: see text] in tap water and cosmetic products.
Source: Surface Review and Letters
Authors: ZHE-NAN LIU, XIAO-YING LIU, XIAO-YUE FAN, JIN-PENG XUE, GUO-NA LI, XING LI
Institution: Ningbo University
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: G5373102832, G5655195843
OpenAlex ID: W4402494558