Article ID Journal Published Year Pages File Type
1234971 Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2009 4 Pages PDF
Abstract

Herein, we reported the quenching effect of Ni2+ on bovine serum albumin protected fluorescent gold nanoparticles (BSA-GNPs). The quenching mechanism was discussed and a static quenching mechanism was proposed. The number of binding sites (n), apparent stability constants (K) and corresponding thermodynamic parameters of BSA-GNPs-Ni2+ complex were measured at different temperatures. Under optimum conditions, the fluorescence intensity of BSA-GNPs is linearly proportional to nickel concentration from 6.0 × 10−8 mol/L to 8.0 × 10−6 mol/L with a detection limit of 1.0 × 10−8 mol/L. The result indicated that BSA-GNP was a potential Ni2+ probe.

Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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