PotentiometryElectrochemistryIon-Selective ElectrodesElectrodesElectrochemical TechniquesMethacyclineMembranes, ArtificialCalibrationOxidation-ReductionFluorocarbon PolymersImmobilized ProteinsGraphiteHydrogen-Ion ConcentrationGoldSulfite DehydrogenaseBiosensing TechniquesFerrous CompoundsSiloxanesDesulfovibrio gigasSpectrophotometryDibenzothiepinsIonic LiquidsElectron TransportEnzymes, ImmobilizedSpectrophotometry, InfraredMolecular StructureMetal NanoparticlesCytochrome c GroupNanostructuresCarbonElectrons