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Separation and estimation of bisphenol a by liquid chromatography with UV detection

Nagahashi M., Kikuchi N., Migaki E., Watanabe S., Miki T.

Acta Chromatographica

2000

No. 10

110-122

Reliable HPLC separation and estimation of bisphenol A has been performed on a conventional ODS column with 40:60 acetonitrile–water as mobile phase and UV detection at 277 nm. Linear regression plots were obtained for the dependence of response on bisphenol A concentration in the working ranges 2 to 10 ng and 10 to 100 ng; the correlation coefficients for the plots were r = 0.9976 (n = 5) and r = 0.9987 (n = 6), respectively. Aqueous samples were applied to a solid-phase extraction cartridge packed with three layers, Bio-Rad AG 50W X8 [H+], ODS–silica, and Bio-Rad AG 1 X8 [formate–]. Eluent from this cartridge was passed through a normal-phase Florisil PR cartridge. These isolation and purification cartridges effectively separated and purified bisphenol A from spiked samples with recovery between 86 and 92%. The method was used to estimate bisphenol A in water samples.