SciELO - Scientific Electronic Library Online

 
vol.67Diorganotin(IV) Complexes with Methionine Methyl Ester. Equilibria and Displacement by DNA ConstituentsA New Kinetic Spectrophotometric Method for Total Polyphenols Determination in White Wines author indexsubject indexarticles search
Home Pagealphabetic serial listing  

South African Journal of Chemistry

On-line version ISSN 1996-840X

Abstract

CAO, Guiping; ZHUANG, Yafeng  and  LIU, Baoliang. Simultaneous Determination of Bisphenol A and Bisphenol S in Environmental Water using Ratio Derivative Ultraviolet Spectrometry. S.Afr.j.chem. (Online) [online]. 2014, vol.67, pp. 0-0. ISSN 1996-840X.

A simplified method based on ratio derivative ultraviolet spectrometry for simultaneous determination of bisphenol A (BPA) and bisphenol S (BPS) in environmental water is presented. The method provides a direct analysis of the samples without tedious sample preparation. In this method, the overlapping spectra of BPA and BPS were well resolved using the first derivative (Δλ = 1 nm) of the ratio of their absorption spectra. Measurements of absorbance were performed at wavelengths of 229.5 nm and 245.5 nm for BPA and BPS, respectively, using the ratio derivative spectrum method. Beer's law was followed in the concentration range of 8.8 X 10-7-2.2 X 10-4 mol dm-3 for BPA and 1.4 X 10-6-1.0 X 10-4 mol dm-3 for BPS. The limits of detection were 3.5 X -7 mol dm-3 for BPA and 4.4 X 10 7 mol dm 3 for BPS. Their 5:1 to 1:5 mixtures were resolved with recoveries between 90.5 % and 100.9 % for BPA and between 93.8 % and 101.1 % for BPS. The method was satisfactorily applied to the simultaneous determination of BPA and BPS in environmental water samples.

Keywords : Bisphenol A; bisphenol S; ratio derivative method; ultraviolet spectrometry; simultaneous determination.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License