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The Application of Chelating Agent Incorporated Polymer Modified Electrodes in the Detection of Trace Metals
Author(s) -
Zen J.M.,
Lee M.L.,
Huang S.Y.,
Hsu F.S.,
Chi N.Y.,
Chung M.J.
Publication year - 1998
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199800007
Subject(s) - dimethylglyoxime , chemistry , anodic stripping voltammetry , chelation , nafion , mercury (programming language) , stripping (fiber) , trace amounts , electrode , voltammetry , analytical chemistry (journal) , inorganic chemistry , electrochemistry , chromatography , cobalt , materials science , medicine , alternative medicine , composite material , pathology , computer science , programming language
The use of chelating agent‐modified Nafion®‐coated mercury‐film electrodes (CNCMFEs) in square wave anodic stripping voltammetry (SWASV) for the determination of trace metals is described. The CNCMFE containing appropriate amounts of dimethylglyoxime (DMG) was applied for the determination of Ni(II), Cd(II), and Cu(II). A similar system that contains 2,2′‐bipyridyl (Bpy) was used for the determination of Pb(II). The effect of various model organic substances on the CNCMFEs in SWASV is thoroughly explored. The CNCMFEs are considerably more resistant to organic interferences than the Nafion®‐coated MFE. The implications of these interferences for the reliability and feasibility of stripping measurements using the CNCMFEs in real samples are discussed. Results presented for real samples demonstrate the analytical utility of the CNCMFEs in SWASV.