simultaneous solid-phase extraction and determination of three bisphenols in water samples and orange juice by a porous β-cyclodextrin polymer

A porous β-cyclodextrin polymer (p-cdp) was used as a new sorbent for simultaneous solid-phase extraction (spe) and determination of bisphenol a (bpa), bisphenol f (bpf), and bisphenol af (bpaf). the p-cdp was obtained via the cross-linking of β-cyclodextrin with tetrafluoroterephthalonitrile, and then was characterized by ft-ir spectroscopy, scanning electron microscopy, nitrogen adsorption-desorption isotherms, and thermo-gravimetric analysis. adsorption tests showed that the p-cdp had good binding ability and fast uptake kinetics for three bisphenols. when used as a spe sorbent for three bisphenols, p-cdp showed high extraction efficiencies, high enrichment factors, and good reusability. based on the p-cdp sorbent, a new spe-hplc-uv method was developed and successfully applied to the detection of three bisphenols in real samples. the recoveries of bpf, bpa, and bpaf in water samples were 91.2–102.6% (rsd = 1.4–2.9%), 98.0–101.2% (rsd = 1.3–2.7%), and 96.3%–103.7% (rsd = 1.3–2.9%), respectively. moreover, the recoveries of bpf, bpa, and bpaf in orange juice were 94.3–97.1% (rsd = 1.4–2.9%), 102.7–103.6% (rsd = 1.7–3.5%), and 94.5–101.0% (rsd = 1.3–2.8%), respectively. the limits of detection (s/n = 3) and the limits of quantification (s/n = 10) for all analytes were 0.3 and 1.0 ng/ml, respectively. therefore, p-cdp can be used as a good spe sorbent for the simultaneous determination of bpa, bpf, and bpaf in environmental water samples and beverages.