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Electrode Modified with Langmuir–Blodgett (LB) Film of Calixarenes for Preconcentration and Stripping Analysis of Hg(II)
Author(s) -
Dong Huimin,
Lin Lin,
Zheng Hao,
Zhao Guoxin,
Ye Baoxian
Publication year - 2006
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.200603520
Subject(s) - anodic stripping voltammetry , detection limit , electrode , calixarene , stripping (fiber) , chemistry , selectivity , electrochemistry , analytical chemistry (journal) , voltammetry , mercury (programming language) , langmuir–blodgett film , linear range , monolayer , inorganic chemistry , materials science , chromatography , organic chemistry , composite material , molecule , biochemistry , computer science , programming language , catalysis
Abstract A new type of current sensor, Langmuir–Blodgett (LB) film of calixarene on the surface of glassy carbon electrode (GCE) was prepared for determination of mercury by anodic stripping voltammetry (ASV). An anodic stripping peak was obtained at 0.15 V (vs. SCE) by scanning the potential from −0.6 to +0.6 V. Compared with a bare GCE, the LB film coated electrode greatly improves the sensitivity of measuring mercury ion. The fabricated electrode in a 0.1 M H 2 SO 4 +0.01 M HCl solution shows a linear voltammetric response in the range of 0.07–40 μg L −1 and detection limit of 0.04 μg L −1 (ca. 2×10 −10 M). The high sensitivity, selectivity, and stability of this LB film modified electrode demonstrates its practical application for a simple, rapid and economical determination of Hg 2+ in a water sample.