title: Electroanalytical determination of cadmium(II) and lead(II) using an in-situ bismuth film modified edge plane pyrolytic graphite electrode.
abstract: A highly sensitive and simple electroanalytical methodology is presented using an in-situ bismuth film modified edge plane pyrolytic graphite electrode (BiF-EPPGE) which is exemplified with the simultaneous determination of cadmium(II) and lead(II). Square-wave anodic stripping voltammetry is utilised with the effects of several experimental variables studied. Simultaneous additions of cadmium(II) and lead(II) were investigated where two linear ranges between 0.1-100 and 0.1-300 microg/L and also detection limits of 0.062 and 0.084 microg/L were obtained, respectively. The method was then successfully applied to the simultaneous determination of cadmium(II) and lead(II) in spiked river water, where recoveries of 100.5 and 98% were obtained, respectively. This electroanalytical protocol using edge plane pyrolytic graphite electrodes is one of the simplest methodologies to date using non-mercury based electrodes and is simpler and cheaper than alternatives such as carbon nanotube electrode arrays, suggesting the use of edge plane pyrolytic graphite electrode for routine sensing.
authors: Physical and Theoretical Chemistry Laboratory, Oxford University, UK.
authors: Roohollah Torabi
authors: RT
authors: Kachoosangi
authors: Craig E
authors: CE
authors: Banks
authors: Xiaobo
authors: X
authors: Ji
authors: Richard G
authors: RG
authors: Compton
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D002104:Cadmium / Q000737:chemistry*; D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*
chemical_list: D002104:Cadmium; D007854:Lead; D006108:Graphite; D001729:Bismuth