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Electrochemical Properties of Electrode Modified with Langmuir‐Blodgett Film of p‐tert ‐Butylcalix[4]arene Derivatives and Its Application in Determining of Silver
Author(s) -
Wang Lu,
Zhao BangTun,
Ye BaoXian
Publication year - 2007
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.200603770
Subject(s) - electrochemistry , detection limit , stripping (fiber) , langmuir–blodgett film , reproducibility , aqueous solution , electrochemical gas sensor , selectivity , electrode , tap water , voltammetry , chemistry , materials science , inorganic chemistry , analytical chemistry (journal) , nuclear chemistry , chromatography , monolayer , organic chemistry , nanotechnology , environmental engineering , engineering , composite material , catalysis
A new type of voltammetric sensor, Langmuir‐Blodgett (LB) film of 5,11,17,23‐tetra‐ tert ‐butyl‐25,27‐di(3‐thiadiazole‐propanoxy)‐26,28‐dihydroxycalix[4]arene modified glassy carbon electrode (LB TZCA –GCE), was prepared. The electrochemical properties of LB TZCA –GCE were researched in detail and its recognizing mechanism for silver ion in aqueous solution was discussed. Using this voltammetric sensor, a new stripping voltammetric method for determining of Ag + was erected with good sensitivity, selectivity, reproducibility and recovery. The detection limit was 8×10 −9 M at accumulation time of 180 s. By this method, real samples (lake water, tap water and synthesis sample) were analyzed and the results obtained were well satisfactory.