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目的建立环境水样中双酚A(bisphenol A,BPA)的罗丹明6G-动力学共振荧光测定法。方法向水样品中依次加入0.1 mol/L硫酸溶液0.6 ml,1.0×10-4 mol/L罗丹明6G溶液0.4 ml,0.1 mol/L溴酸钾溶液0.5 ml,70℃水浴加热12 min,流水冷却3 min,在524.2 nm处测定共振荧光强度。结果在0.02~1.40μg/ml线性范围内,该方法所得BPA的回归方程为ΔF=1 708.4c+33.2,r=0.999 8。该方法的检出限为0.014μg/ml,回收率为97.5%~106.5%,RSD为3.9%~5.0%。结论该方法简单、方便、灵敏,适用于饮用水中BPA的测定。
Objective To establish a rhodamine 6G-kinetic resonance fluorimetric assay of bisphenol A (BPA) in environmental water samples. Methods To the water sample, 0.6 ml of 0.1 mol / L sulfuric acid solution, 0.4 ml of 1.0 × 10-4 mol / L rhodamine 6G solution and 0.5 ml of 0.1 mol / L potassium bromate solution were added successively to the water sample, and heated in water bath at 70 ℃ for 12 min. min, resonance fluorescence intensity was measured at 524.2 nm. The results of the linear range of 0.02 ~ 1.40μg / ml, the BPA obtained by this method regression equation ΔF = 1 708.4c +33.2, r = 0.999 8. The detection limit of the method was 0.014μg / ml, the recovery was 97.5% ~ 106.5%, RSD was 3.9% ~ 5.0%. Conclusion The method is simple, convenient and sensitive and is suitable for the determination of BPA in drinking water.