该文研究了电子供体硼砂与双酚S荷移络合物的光谱性质,建立了简单快速测定双酚S（BPS）含量的荷移紫外分光光度法。结果表明：荷移络合物的最大吸收波长为291 nm,表观摩尔吸光系数ε为1.92×10^4L·mol^-1·cm^-1。双酚S的质量浓度在0.7-7 mg/L范围内符合比尔定律,相关系数为0.999 6,检出限为0.195 mg/L。该方法用于测定塑料中双酚S的含量,加标回收率为99.8%-100.4%,相对标准偏差不大于0.5%。
Based on the charge-transfer reaction between bisphenol-S（BPS） and borax,a simple and rapid method was developed for the determination of BPS by ultraviolet spectrophotometric method. The results indicated that in water medium,BPS could form charge-transfer complex with borax,and its maximum absorption wavelength was 291 nm. The apparent molar absorptivity was 1. 92 × 10^4 L·mol^-1·cm^-1. Beers law was obeyed for BPS in the concentration range of 0. 7-7 mg/L. The correlation coefficient was 0. 999 6,and the detection limit was 0. 195 μg/mL. The proposed method was applied in the determination of BPS in samples with satisfactory results. The recoveries for BPS were in the range of 99. 8%-100. 4% with RSDs（n = 5） not more than 0. 5%.
Journal of Instrumental Analysis