Mercury-plated iridium-based microelectrode arrays for trace metals detection by voltammetry: optimum conditions and reliability

Gold Microelectrode Arrays Based Electrode for Determination of Trace Copper in Seawater

“…It can be seen that each microdisc is circular and 20 µm in diameter with a center-tocenter spacing of 200 µm. This is in good agreement with the literature data which recommends interelectrode distances 10 times the diameter of the microelectrodes 30 . This distance between the microdiscs is thus found to be sufficient to avoid the shielding effects due to the overlapping of the diffusion layers of adjacent electrodes.…”

The use of microelectrodes with AGNES

“…Microelectrodes have been gaining importance in trace metal studies [4][5][6][7] due to their unique properties, such as a decreased ohmic potential drop, current increase due to enhanced mass transport at the electrode boundary, fast establishment of a steady state signal and increased signal to noise ratio, which originates in the changing conditions of the mass transport from the bulk towards the electrode as compared with a macroelectrode [8]. These characteristics together with the possibility of miniaturization are driving an increasing use of microelectrodes for in situ measurements [9,10].…”

Theory of Anodic Stripping Square Wave Voltammetry on Spherical Mercury Electrodes

“…2,4,9,11,12 The concentration of amalgam forming ions can be measured by anodic stripping voltammetry on mercury microelectrodes. 16,17 The application of square-wave voltammetry in the stripping phase is particularly efficient. 18 The theory of this technique is well developed for the stationary planar electrode covered by thin mercury film, 19 but not for spherical electrodes because of the need to consider the diffusion within the mercury drop.…”