Determination of heavy metals at the electrochemically reduced graphene oxide mercury film electrode (ERGO-HgF-PGE) using adsorptive stripping voltammetry

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dc.contributor.advisorJahed, Nazeem
dc.contributor.advisorIwuoha, Emmanuel. I.
dc.contributor.advisorPokpas, Keagan
dc.contributor.authorSanga, Nelia Abraham
dc.date.accessioned2020-12-09T12:18:44Z
dc.date.accessioned2024-05-09T10:51:36Z
dc.date.available2024-05-09T10:51:36Z
dc.date.issued2020
dc.description>Magister Scientiae - MScen_US
dc.description.abstractThis work reports the use of a pencil graphite electrode (PGE) as inexpensive and sensitive electrochemical sensing platform fabricated by using electrochemically reduced graphene oxide (ERGO) in conjunction with an in-situ plated thin mercury film. For the first time the ERGOHgF-PGE sensor is proposed for simultaneous detection of cadmium (Cd2+), copper (Cu2+), lead (Pb2+) and zinc (Zn2+) using N-Nitroso-N-phenylhydroxylamine (cupferron) as complexing agent by square-wave adsorptive cathodic stripping voltammetry (SW-AdCSV). The technique is based on the adsorption of cupferron- metal ion complexes onto the surface of the ERGO-HgFPGE at 0.1 V for 60 s carried out in 0.1 M acetate buffer solution (pH 4.6). The synthesized graphene oxide (GO) and graphene nanosheets (GNs) were characterized using different analytical techniques such as FT-IR which confirms the presence of oxygen moieties embedded in the graphitic structure and further demonstrated by UV-Vis, validating the synthesis of GOen_US
dc.description.embargo2023
dc.identifier.urihttps://hdl.handle.net/10566/14616
dc.language.isoenen_US
dc.publisherUniversity of Western Capeen_US
dc.rights.holderUniversity of Western Capeen_US
dc.subjectCupferronen_US
dc.subjectGrapheneen_US
dc.subjectPencil graphite electrode (PGE)en_US
dc.subjectThin mercury filmen_US
dc.subjectTrace metal analysisen_US
dc.titleDetermination of heavy metals at the electrochemically reduced graphene oxide mercury film electrode (ERGO-HgF-PGE) using adsorptive stripping voltammetryen_US

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