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Anodic and cathodic stripping voltammetry in the simultaneous determination of toxic metals in environmental samples
Author(s) -
Locatelli Clinio
Publication year - 1997
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140091309
Subject(s) - anodic stripping voltammetry , cathodic protection , voltammetry , cathodic stripping voltammetry , stripping (fiber) , environmental chemistry , microchemistry , chemistry , anode , materials science , electrochemistry , chromatography , electrode , composite material
Differential pulse anodic and cathodic stripping voltammetry have been employed for the simultaneous determination of As III , Se IV Cu II , Pb II and Cd II in environmental matrices. The voltammetric measurements were carried out using a conventional three‐electrode cell and the ammonia‐ammonium chloride buffer (pH 9.2) as supporting electrolyte. The analytical procedure was verified by the analysis of the standard reference materials: Mussel Tissue BCR‐CRM 278 and Ulva Lactuca BCR‐CRM 279. The precision and the accuracy, expressed as relative standard deviation ( s r ) and relative error ( e ), respectively, were of the order of 3 to 5%, while the detection limit for each element, under the experimental conditions employed, was around 10 −9 M.