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CE with a boron‐doped diamond electrode for trace detection of endocrine disruptors in water samples
Author(s) -
Browne Damien J.,
Zhou Lin,
Luong John H. T.,
Glen Jeremy D.
Publication year - 2013
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.201200480
Subject(s) - bisphenol a , tap water , amperometry , chemistry , electrode , diamond , chromatography , electrochemistry , environmental engineering , organic chemistry , engineering , epoxy
Off‐line SPE and CE coupled with electrochemical detection have been used for the determination of bisphenol A ( BPA ), bisphenol F , 4‐ethylphenol, and bisphenol A diglycidyl ether in bottled drinking water. The use of boron‐doped diamond electrode as an electrochemical detector in amperometric mode that provides a favorable analytical performance for detecting these endocrine‐disrupting compounds, such as lower noise levels, higher peak resolution with enhanced sensitivity, and improved resistance against electrode passivation. The oxidative electrochemical detection of the endocrine‐disrupting compounds was accomplished by boron‐doped diamond electrode poised at +1.4 V versus A g/ A g C l without electrode pretreatment. An off‐line SPE procedure ( B ond E lut® C 18 SPE cartridge) was utilized to extract and preconcentrate the compounds prior to separation and detection. The minimum concentration detectable for all four compounds ranged from 0.01 to 0.06 μ M , having S / N equal to three. After exposing the plastic bottle water container under sunlight for 7 days, the estimated concentration of BPA in the bottled drinking water was estimated to be 0.03 μ M . This proposed approach has great potential for rapid and effective determination of BPA content present in water packaging of plastic bottles that have been exposed to sunlight for an extended period of time.