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A New Type of Bismuth Electrode for Electrochemical Stripping Analysis Based on the Ammonium Tetrafluorobismuthate Bulk‐Modified Carbon Paste
Author(s) -
Sopha Hanna,
Baldrianová Lucie,
Tesařová Eva,
Grincienė Giedre,
Weidlich Tomáš,
Švancara Ivan,
Hočevar Samo B.
Publication year - 2010
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.201070010
Subject(s) - bismuth , stripping (fiber) , electrode , carbon paste electrode , anodic stripping voltammetry , carbon fibers , electrochemistry , inorganic chemistry , materials science , ammonium , metal , oxide , chemistry , nuclear chemistry , cyclic voltammetry , metallurgy , composite material , composite number , organic chemistry
A carbon paste electrode bulk‐modified with ammonium tetrafluorobismuthate (BiF 4 ‐CPE) was developed and examined in the anodic stripping voltammetric mode for measurement of selected trace heavy metals. The BiF 4 ‐CPE has revealed a favorable performance in more acidic solutions (pH 0.5–2.5) in the presence of dissolved oxygen for Cd(II) and Pb(II) as model metal ions at the low μg L −1 concentration level. In comparison with the bismuth‐oxide bulk‐modified carbon paste electrode and the other two bismuth film‐plated carbonaceous substrate electrodes examined, the BiF 4 ‐CPE proved to be another attractive variant of the environmentally friendly bismuth‐based electrodes, particularly convenient for analysis of acidified water samples.