“…Moreover, a study on the factors affecting the electrochemical reactivity of the FeS x particulates has yet to be undertaken. Several electrode materials, such as graphite rods, plates and granules, 6,15,21,22 and electrodes containing precious metals such as platinum, 17,23,24 nickel, 9,25 and titanium, 14,16,26,27 have been studied for electrochemical sulfide oxidation at laboratory scale. Similarly, work on the electrochemical detection and characterization of FeS nanoparticles on mercury and gold electrodes has recently been published.…”