We have developed a simple fluorimetric method for the quantification of aqueous bisphenol A (BPA) based on fluorescence quenching of BPA intensity by tannic acid capped magnetic nanoparticles.  The calibration was linear with concentrations of BPA in the range of 1 to 5 mg/L (R2 = 0.997). The detection limit was 0.37 mg/L and the precision, as relative standard deviation, for a BPA standard (4 mg/L) was 3.4%.  Spike and recovery experiments were performed using real water samples (fountain, tap, deionized, and river).  The percent recoveries for BPA (4 mg/L) had mean values of 78.0 � 14.1%, 88.1 � 9.5%, 77.4 � 14.2%, and 81.3 � 7.1% for fountain, tap, deionized, and river water respectively.  Our method has potentials for laboratory and field detection of BPA, requires no complex instrumentation or skilled laboratory support, and has a short reaction time. The method will be validated by an independent method.

Fluorescence determination of bisphenol A in water samples with magnetic nanoparticles capped with tannic acid

243rd National Meeting (2012)

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