Optical behavior of mercury films studied by surface plasmon excitation

Detection of synthetic oligonucleotides by alternating current voltammetry at solid amalgam surfaces

“…The thicknesses of the mercury layer deposited on the metal substrates and/or GCE were controlled by a change of the deposition time t and current value I with respect to the Faraday law; (b) the second step represents the cathodisation of the plated electrodes in the 0.2 M KCl solution bath at a constant potential of −2.20 V for 60 s. The application of a high negative potential results in hydrogen evolution and a decrease in the surface tension of mercury [23]. It can be assumed, that after application of a high negative potential on the Hg-modified metal substrate, the liquid mercury has disappeared, and the Hg layer has been transformed into a solid amalgam [24]. In the case of the GCE only first electrodeposition step for preparation of the HgGCE was applied.…”