title: Rapid pretreatment and determination of bisphenol A in water samples based on vortex-assisted liquid-liquid microextraction followed by high-performance liquid chromatography with fluorescence detection.
abstract: A method for the rapid pretreatment and determination of bisphenol A in water samples based on vortex-assisted liquid-liquid microextraction followed by high-performance liquid chromatography with fluorescence detection was proposed in this paper. A simple apparatus consisting of a test tube and a cut-glass dropper was designed and applied to collect the floating extraction drop in liquid-liquid microextraction when low-density organic solvent was used as the extraction solvent. Solidification and melting steps that were tedious but necessary once the low-density organic solvent used as extraction solvent could be avoided by using this apparatus. Bisphenol A was selected as model pollutant and vortex-assisted liquid-liquid microextraction was employed to investigate the usefulness of the apparatus. High-performance liquid chromatography with fluorescence detection was selected as the analytical tool for the detection of bisphenol A. The linear dynamic range was from 0.10 to 100 μg/L for bisphenol A, with good squared regression coefficient (r(2) = 0.9990). The relative standard deviation (n = 7) was 4.7% and the limit of detection was 0.02 μg/L. The proposed method had been applied to the determination of bisphenol A in natural water samples and was shown to be economical, fast, and convenient.
authors.affiliation: School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Yang
authors.forename: Chun-Peng
authors.initials: CP
authors.lastname: Diao
authors.forename: Ai-Ling
authors.initials: AL
authors.lastname: Sun
authors.forename: Ren-Min
authors.initials: RM
authors.lastname: Liu
keywords: Bisphenol A; High-performance liquid chromatography; Vortex-assisted liquid-liquid microextraction; Water samples