Detection of Bisphenol A in Water Samples by Magnetic Graphene Oxide Based Solid Phase Extraction and Liquid Chromatography

Abstract

Bisphenol A (BPA) has received much attention from the public due to its endocrine disrupting effect. Therefore it is necessary to develop suitable analytical methods for determination of bisphenol A in water samples. In this study, magnetic graphene oxide was prepared and used as the sorbent for magnetic solid phase extraction of bisphenol A from aqueous solutions. The parameters which influence the extraction efficiency of bisphenol A were investigated. The optimum conditions, such as sample pH, extraction and desorption times, and eluent type and volume were obtained. The analytical performance of the method was evaluated, and the results showed that the limit of detection (LOD) for bisphenol A was 0.36μg/L and the RSD was 2.9 %. The developed method was applied to the detection of bisphenol A in environmental water samples with satisfactory recoveries.