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Electrochemical Determination of 2‐Nitrophenol in Water Samples Using Mg‐Al‐SDS Hydrotalcite‐Like Clay Modified Glassy Carbon Electrode
Author(s) -
Yin Huanshun,
Zhou Yunlei,
Ai Shiyun,
Cui Lin,
Zhu Lusheng
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.200900522
Subject(s) - hydrotalcite , overpotential , detection limit , electrochemistry , electrode , glassy carbon , nitrophenol , inorganic chemistry , carbon fibers , carbon paste electrode , electrocatalyst , materials science , chemistry , chemically modified electrode , nuclear chemistry , working electrode , chromatography , cyclic voltammetry , catalysis , organic chemistry , composite number , composite material
A glassy carbon electrode (GCE) modified with Mg‐Al‐SDS hydrotalcite‐like clay (SDS‐HTLC) was used for the sensitive voltammetric determination of 2‐nitrophenol (2‐NP) utilizing the oxidation process. The results indicate the prepared modified electrode has an excellent electrocatalytic activity toward 2‐NP oxidation, lowering the oxidation overpotential and increasing the oxidation current. Under optimal conditions, the oxidation current was proportional to 2‐NP concentration in the range from 1.0×10 −6 to 6.0×10 −4 M with the detection limit of 5.0×10 −7 M by DPV ( S / N =3). The fabricated electrode was applied for 2‐NP determination in water samples and the recovery for these samples was from 95.6 to 103.5%.