Browsing Chemistry by Author "Pokpas, Keagan"
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Complexation-based detection of nickel(ii) at a graphene-chelate probe in the presence of cobalt and zinc by adsorptive stripping voltammetry
Pokpas, Keagan; Jahed, Nazeem; Baker, Priscilla G. (MDPI, 2017)The adsorptive stripping voltammetric detection of nickel and cobalt in water samples at metal film electrodes has been extensively studied. In this work, a novel, environmentally friendly, metal-free electrochemical ... -
Electrochemically reduced graphene oxide pencil-graphite in situ plated bismuth-film electrode for the determination of trace metals by anodic stripping voltammetry
Pokpas, Keagan; Zbeda, Salma; Jahed, Nazeem; Mohamed, Nuralli; Baker, Priscilla; Iwuoha, Emmanuel I. (ESG, 2014)An electrochemical platform was developed based on a pencil-graphite electrode (PGE) modified with electrochemically reduced graphene oxide (ERGO) sheets and in conjunction with an in situ plated bismuth-film (ERGO-PG-BiE). ... -
Few-layer binder free graphene modified mercury film electrode for trace metal analysis by square wave anodic stripping voltammetry
Zbeda, Salma; Pokpas, Keagan; Titinchi, Salam J.J.; Jahed, Nazeem; Baker, Priscilla; Iwuoha, Emmanuel I. (ESG, 2013)A binding agent free graphene modified glassy carbon electrode in combination with an in situ plated mercury film electrode (Gr-GC-HgFE) was used as a highly sensitive electrochemical platform for the determination of Zn2+, ... -
Nickel contamination analysis at cost-effective silver printed paper-based electrodes based on carbon black dimethylglyoxime ink as electrode modifier
Pokpas, Keagan; Jahed, Nazeem; Bezuidenhout, Petrone (International Association of Physical Chemists, 2022)Electrochemical detection of metal cations at paper-based sensors has been suggested as an attractive alternative to current spectroscopic and chromatographic detection techniques due to the ease of ...