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（简称BP-2）在不同缓冲体系中的极谱行为。实验表明，在pH=2．25的B-R缓冲溶液中，BP-2的一阶导数峰电位为-1．12V，其峰电流与浓度在5．0×10^-6～9．0×10^-5mol／L范围内的对数值有良好的线性关系，线性方程为ip’（nA／s）=11457＋2133×1gc（mol／L），相关系数为0．9998。BP-2的微分循环伏安研究表明，该极谱波为不可逆还原波；初步讨论了电极反应机理。
The polarographic behavior of Benzophenone-2 was studied by linear sweep polarography. The results show that Benzophenone-2＇s first derivative peak potential is -1.19 V （vs SCE） at pH=2.95 B- R buffer solution and its peak current is proportional to the logarithm in concentration of Benzophenone- 9 over the range of 5.0 × 10^-6 -9.0 × 10%-5 mol/L. The linear regression equation is ip（nA/s）= 11 457＋ 9 133× lgc（mol/L） with correlation coefficient of 0. 9998. The curve of cyclic voltammetry show that the polarographic wave is irreversible deoxidization wave. The mechanism of electrode reaction was also briefly discussed.
出处
《分析科学学报》
CAS
CSCD
2008年第1期59-62,共4页
Journal of Analytical Science
基金
湖北省自然科学基金(No.2003ABA062)
