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Electrochemical Detection of Metals Using Thick Nanofibrous Nafion Web Modified Electrodes
Author(s) -
Musameh Mustafa M.,
Klink Daniela,
Choi Jonghyun,
Truong Yen Bach,
Kyratzis Ilias Louis
Publication year - 2012
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.201100689
Subject(s) - nafion , detection limit , anodic stripping voltammetry , electrode , materials science , cyclic voltammetry , differential pulse voltammetry , electrochemistry , scanning electron microscope , analytical chemistry (journal) , voltammetry , stripping (fiber) , cadmium , nuclear chemistry , chemistry , chromatography , composite material , metallurgy
In this work, GC electrodes modified with thick electrospun nanofibrous Nafion webs were characterized using scanning electron microscopy (SEM) and cyclic voltammetry (CV) and used for the extraction and electrochemical detection of cadmium by differential pulse voltammetry. Cadmium was detected after 10 min incubation at open circuit followed by anodic stripping using 60 s reduction at −1.4 V. The electrode yielded well‐defined, undistorted and reproducible ( RSD of 7.0 % based on 10 measurements) voltammetric response with two linear ranges from 0.1 to 3 µM ( R 2 =0.994 ) and from 3 to 10 µM ( R 2 =0.977) and a detection limit and sensitivity of 0.01 µM and 32 and 7.725 µA/µM for both linear portions of the curve respectively.