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Electrochemical preparation of composite polyaniline coating and its application in the determination of bisphenol A, 4‐ n ‐nonylphenol, 4‐ tert ‐octylphenol using direct solid phase microextraction coupled with high performance liquid chromatography
Author(s) -
Huang Minjia,
Jiang Guibin,
Cai Yaqi
Publication year - 2005
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.200500091
Subject(s) - solid phase microextraction , polyaniline , polydimethylsiloxane , materials science , coating , electrode , nonylphenol , fiber , bisphenol a , extraction (chemistry) , chromatography , saturated calomel electrode , composite number , reference electrode , electrochemistry , chemistry , composite material , polymer , epoxy , gas chromatography–mass spectrometry , environmental chemistry , mass spectrometry , polymerization
For SPME‐HPLC, metal wires with better mechanical strength are preferred over the fused silica fibers. In this article, a novel composite polyaniline (CPANI) doped with PEG and polydimethylsiloxane coating (CPANI fiber) was prepared on a stainless steel wire by a three‐electrode system: the fiber was used as the work electrode, a calomel electrode and a platinum electrode were used as the reference and the counter electrodes, respectively. To evaluate the new CPANI coating, the coating was used to extract three kinds of phenols (bisphenol A, 4‐ n ‐nonylphenol, and 4‐ tert ‐octylphenol) in water samples by direct‐SPME mode and then desorbed in commercial SPME‐HPLC interface to separation. The extraction procedure was also optimized. Five real water samples were investigated. Good recoveries were gained when environmental samples were analyzed.