2,2,′4,4′-四羟基二苯甲酮的极谱行为研究  

Polarographic behavior of 2,2′,4,4′-tetrahydroxybenziphenone

作　　者：徐绍炳[1] 夏新泉[1] 张盈艳[1] 

机构地区：[1]湖北师范学院化学与环境工程系,湖北黄石435002

出　　处：《日用化学工业》2007年第3期203-205,共3页China Surfactant Detergent & Cosmetics

基　　金：湖北省自然科学基金资助项目(2003ABA062)

摘　　要：用线性扫描极谱法系统研究了2,2,′4,4′-四羟基二苯甲酮(BP-2)在不同缓冲体系中的极谱行为。实验表明,在2.5 mol/L的H2SO4溶液中BP-2的二阶导数峰电位为-1.06 V,其峰电流与浓度在5.0×10-6mol/L^3.0×10-5mol/L的对数值有良好的线性关系,线性方程ip″(nA/s2)=19 096.79+745.75×lgc(mol/L),相关系数为0.993 6。BP-2的微分循环伏安曲线表明,该极谱波为不可逆还原波。The polarographic behavior of 2, 2＇, 4, 4＇ - tetrahydroxybenziphenone （BP- 2） in various buffer systems was systematically studied by linear sweep polarography. Results showed that the second order derivative peak potential of BP - 2 in 2.5 mol/L sulfuric acid buffer solution is - 1.06 V （vs SCE）. When the concentration of BP - 2 is within the range of 5.0×10^-6 mol/L- 3.0×10^-5 mol/L, there is good linearity between concentration of BP - 2 vs peak current. The linear regression equation is ip＂（nA/s^2） = 19 096.79 ＋ 745.75×lg c（mol/L）. The correlation coefficient is 0.993 6. Plots of differential cyclic voltammetry show that the polarographic wave belongs to irreversible reductive wave.

关 键 词：防晒剂 2 2 '4 4'-四羟基二苯甲酮(BP-2) 线性扫描极谱法 极谱波 

分 类 号：O657.14[理学—分析化学]