The environmental contaminant bisphenol S (BPS) was determined by a kinetic fluorimetric method combined with Fenton process in the presence of rhodamine B (RhB). In acidic solution, the fluorescent RhB was oxidized by hydroxyl radical generated in Fenton process and produced fluorescence quenching, which was obviously accelerated by BPS added into the system. The decrease in fluorescence intensity (ΔF) was proportional to the concentration of BPS with the maximum excitation and emission wavelengths of 554 nm and 578 nm, respectively. Under the optimal conditions, the ΔF was good linear with the concentration of BPS over the range of 0.004–2.0 mg/L with a correlation coefficient of 0.9991. The detection limit of 0.73 μg/L was obtained for the determination of BPS by the proposed method. The general coexisting substances did not interfere to the reactions of BPS with Fenton reagent and RhB. The proposed method has been successfully applied to determine BPS migrated from plastic package with satisfactory results. This new method is environmentally friendly and easy to popularize.

在罗丹明B（RhB）存在下，通过动力学荧光法结合Fenton工艺测定了环境污染物双酚S（BPS）。在酸性溶液中，荧光RhB被Fenton过程中产生的羟基自由基氧化，产生荧光猝灭，而BPS明显地加速了荧光猝灭。荧光强度的降低（ΔF）与最大激发和发射波长分别为554 nm和578 nm的BPS浓度成正比。在最佳条件下，ΔFBPS浓度在0.004–2.0 mg / L范围内具有良好的线性关系，相关系数为0.9991。通过该方法测定BPS的检出限为0.73μg/ L。普通的共存物质不会干扰BPS与Fenton试剂和RhB的反应。该方法已成功应用于从塑料包装中迁移的BPS的测定，结果令人满意。这种新方法对环境友好，易于推广。