Figure 4.
TEM images of the H-AuNS probe (a) without and (b) with Hg(II) (1.0 μM) in the absence of HCl/Au(III)/H2O2 solutions; (c) EDX spectrum of the H-AuNS probe with Hg(II) in the absence of HCl/Au(III)/H2O2 solution.
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