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Novel Type of Carbon Nanotube Paste Electrode Modified by Sb 2 O 3 for Square Wave Anodic Stripping Voltammetric Determination of Cd 2+ and Pb 2+
Author(s) -
Majidian Mahsa,
Raoof Jahan Bakhsh,
Hosseini Sayed Reza,
Ojani Reza,
Barek Jiri,
Fischer Jan
Publication year - 2020
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.202060137
Subject(s) - stripping (fiber) , square wave , anodic stripping voltammetry , antimony , analytical chemistry (journal) , electrode , antimony trioxide , carbon nanotube , electrochemistry , potentiometric titration , voltammetry , materials science , carbon fibers , chemistry , nuclear chemistry , inorganic chemistry , nanotechnology , chromatography , metallurgy , physics , quantum mechanics , voltage , fire retardant , composite number , composite material
A novel type of carbon paste electrode modified by multi‐walled carbon nanotubes and antimony trioxide (Sb 2 O 3 /CNTCPE) was applied for square wave anodic stripping voltammetry (SWASV) of Cd 2+ and Pb 2+ . Important parameters (deposition potential, deposition time, HCl concentration) were optimized and linear concentration dependence was obtained in the range of 10–100 ppb with LOD 1.7 ppb for Cd 2+ and 1.2 ppb for Pb 2+ . The practical applicability was tested on the determination of Cd 2+ and Pb 2+ in tap water. The potentiometric stripping analysis at Sb 2 O 3 /CNTCPE was tested for the determination of Cd 2+ and Pb 2+ to compare this method with SWASV.