Determination of four bisphenols in plastic packaging beverages by ultrasonic‐assisted dispersive liquid–liquid microextraction

Abstract

An ultrasonic‐assisted dispersive liquid–liquid microextraction method for the simultaneous detection of four bisphenols (BPs) in plastic packaging beverages was established. The recoveries of the four BPs of spiked water solution were 89.0%–106.7%. The standard deviations (Ss) (n = 9) were 1.7%–2.0%. The recoveries of the 4 BPs in the real honey sample at three concentration levels ranged from 87.6% to 97.5%, and the Ss (n = 6) ranged from 1.0% to 2.3%. The method was employed to detect the 4 BPs (BPA, BPS, BPF, and BPAF) in plastic packaging drinking water, soda water, and honey samples. In drinking water samples, BPS was found in 8 out of 13 samples with a maximum concentration of 1.36 μg/L; BPA was found in four samples, and the maximum concentration was 1.08 μg/L. In soda samples, BPS was detected in six out of the eight samples with the maximum concentration of 27.44 μg/L; 11.40 μg/L BPA was detected in one sample; BPAF was detected in one sample and the concentration was below the limit of quantification. In 13 honey samples, BPF was detected in 12 samples, and the maximum concentration was 766.7 μg/kg; BPS was detected in six samples and the maximum concentration was 209.0 μg/kg; BPAF was detected in eight samples, and the maximum concentration was 197.7 μg/kg; BPA was detected in two samples, but the concentrations were all below the LOQ. Compared with other methods reported, the established method was simple, effective, and eco‐friendly.