Figure 2.

Fluorescence response of 100 μL BSA-GNPs on addition of 400 μL Hg2+ solution (0.1 nM to 4 μM). The inset shows a plot of fluorescence intensity versus the concentrations of Hg2+ in the range of 1 nM to 4 μM

Chai et al. Nanoscale Research Letters 2010 5:1856-1860   doi:10.1007/s11671-010-9730-y