title: Anodic stripping voltammetric measurement of trace cadmium at tin-coated carbon paste electrode.
abstract: A carbon paste electrode modified with tin was used for the determination of trace cadmium by anodic stripping voltammetry. The electroanalytical performance for the determination of Cd(II) on the tin-coated carbon paste electrode(SnF-CPE) was better than that on the carbon paste electrode. The measuring conditions have been optimized. The measurement of trace cadmium on the SnF-CPE has the best response under the conditions of 0.10molL(-1) acetate buffer solution (pH 3.9), 3.5mgL(-1) Sn(II), deposition potential of -1.40V, and deposition time of 150s. The SnF-CPE revealed highly linear behavior in the concentration range of 2.0-90.0μgL(-1) with the detection limit of 1.13μgL(-1) for Cd(II). The developed sensor has been applied to the determination of Cd(II) in real water samples with satisfactory results.
authors.affiliation: Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
authors.forename: Bang Lin
authors.initials: BL
authors.lastname: Li
authors.forename: Zhi Ling
authors.initials: ZL
authors.lastname: Wu
authors.forename: Chang Hong
authors.initials: CH
authors.lastname: Xiong
authors.forename: Hong Qun
authors.initials: HQ
authors.lastname: Luo
authors.forename: Nian Bing
authors.initials: NB
authors.lastname: Li
mesh_terms: D002104:Cadmium / Q000032:analysis*; D002244:Carbon / Q000737:chemistry; D004563:Electrochemistry; D004566:Electrodes; D006863:Hydrogen-Ion Concentration; D057230:Limit of Detection; D014001:Tin / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D002104:Cadmium; D014867:Water; D014001:Tin; D002244:Carbon