Rapid Assay of Bisphenol A Released from Baby Feeding Bottles by Adsorptive Stripping Voltammetry on a Diphenylether Carbon Paste Electrode
Analytical Letters, ISSN: 0003-2719, Vol: 45, Issue: 5-6, Page: 436-448
2012
- 3Citations
- 5Captures
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Article Description
This work reports the determination of bisphenol A (BPA) released from baby feeding bottles by adsorptive stripping voltammetry on a diphenylether carbon paste electrode (DPE-CPE). BPA was as accumulated on the surface of the DPE-CPE by an adsorptive/extractive mechanism at -0.20 V in B-R buffer at pH 7.0. Following pre-concentration, an anodic scan was applied in the range -0.20 V to +1.00 V during which BPA was oxidized and the oxidation peak current was related to the BPA concentration in the sample. The parameters related to both the preconcentration and stripping step were investigated. Using the selected conditions, the limit of detection for BPA was 7.8 × 10 mol L at a preconcentration time of 240 s and the % relative standard deviation was 4.2% for 6.7 × 10 mol L of BPA (n = 8). The proposed method was applied to the determination of BPA leaching from polycarbonate baby feeding bottles under simulated conditions of typical use. The results compared well with those obtained with liquid chromatography-tandem mass spectrometry (LC-MS/MS). © 2012 Copyright Taylor and Francis Group, LLC.
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