Simple and Sensitive Synchronous- Fluorescence Method for the Determination of Trace Bisphenol S Based on its Inhibitory Effect on the Fluorescence Quenching Reaction of Rhodamine B |
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Authors: | Gui-ping Cao Ting Chen Ya-feng Zhuang |
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Institution: | 1. Department of Chemical Engineering, Changzhou Institute of Technology, Changzhou, Jiangsu, 213022, People’s Republic of China
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Abstract: | An inhibitory kinetic fluorimetric method is reported for the determination of trace bisphenol S (BPS). The proposed method is based on the inhibitory effect of BPS on the fluorescence quenching of rhodamine B (RhB) caused by potassium bromate in a dilute phosphoric acid medium. Under the optimal conditions of the experiment, the detection limit for BPS was 0.021 mg/L, and the linear range of determination was from 0.035 mg/L to 0.750 mg/L. The relative standard deviations of 11 measurements for 0.20 mg/L and 0.40 mg/L BPS solutions were 2.74 % and 1.87 %, respectively. The method was successfully applied to the determination of bisphenol S derived from commercially available plastic film samples in hot water. A possible reaction mechanism of the inhibitory effect of BPS on the fluorescence quenching of RhB was proposed. |
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