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Anodic stripping voltammetry of selenium(IV) at a gold fiber working electrode
Author(s) -
McLaughlin Kieran,
Boyd Damien,
Hua Chi,
Smyth Malcolm R.
Publication year - 1992
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.1140040704
Subject(s) - anodic stripping voltammetry , stripping (fiber) , electrode , analytical chemistry (journal) , deposition (geology) , voltammetry , anode , working electrode , electrochemistry , fiber , cyclic voltammetry , detection limit , selenium , materials science , chemistry , chromatography , metallurgy , composite material , paleontology , sediment , biology
The anodic stripping voltammetry of selenium (IV) in a gold fiber electrochemical flow cell is described. The cell is simple to construct and flexible in its operation. The nonlinear diffusional mass transport characteristics of such small diameter electrodes influence the anodic stripping voltammetry of Se(IV) with the result that significant deposition of metal ions occurs during the scan period from the deposition potential to the peak potential. Therefore, an extremely short deposition period of the order of 20 seconds can be employed at the gold fiber electrode. The system described resulted in a linear working range from 0–15 ng/mL, a detection limit of 0.5 ng/mL Se(IV) and a relative standard deviation of 6% at 5 ng/mL (n = 7) in pure solution.