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Bismuth Modified Disposable Pencil‐Lead Electrode for Simultaneous Determination of 2‐Nitrophenol and 4‐Nitrophenol by Net Analyte Signal Standard Addition Method
Author(s) -
AsadpourZeynali Karim,
NajafiMarandi Parvaneh
Publication year - 2011
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.201100103
Subject(s) - analyte , bismuth , electrode , nitrophenol , 4 nitrophenol , chemistry , differential pulse voltammetry , voltammetry , analytical chemistry (journal) , materials science , cyclic voltammetry , chromatography , electrochemistry , organic chemistry , catalysis
A pencil‐lead electrode modified with a thin film of bismuth, that is “environmental friendlier” than mercury, was used for electrocatalytic reduction of 2‐nitrophenol (2‐NP) and 4‐nitrophenol (4‐NP) by differential pulse voltammetry and net analyte signal standard addition method (NASSAM). The modified electrode has electrocatalytic behavior toward reduction of 2‐NP and 4‐NP. Because of similar structures of analytes, at the modified electrode they have high overlapped signals that determination of them in the presence of each other is impossible with univariate methods. NASSAM is a very recently introduced method that is a new modification of the standard addition method, which was used for the simultaneous determination of 2‐NP and 4‐NP.