Figure 1From: Fluorescent Gold Nanoprobes for the Sensitive and Selective Detection for Hg2+a Schematic representation of Hg2+ sensing based on the fluorescence quenching of BSA-GNPs. b Fluorescence spectra of BSA-GNPs in the (a) absence and (b) presence of Hg2+ (4.0 μM), the inset shows corresponding photograph under (top) visible and (bottom) UV lightBack to article page