摘要
用线性扫描伏安法研究了雷酚内酯在不同缓冲体系及氧化剂作用下的极谱行为。实验表明 ,在含有 0 .1mol/LKCl、pH 4.3的HAc NaAc缓冲溶液、6.0× 1 0 - 3mol/LH2 O2 的体系中 ,雷酚内酯产生催化波 ,其一阶导数波的峰电位为- 1 .0 3V (vs.SCE) ,峰电流与其浓度在 3.2× 1 0 - 8～ 3.2× 1 0 - 7mol/L的范围内有良好的线性关系 (n =6,r=0 .9989)。
The polarographic behaviors of triptophenolide at different buffer systems and oxidants were studied by linear sweep polarography. The results show, the peak potential of the polarographic catalytic wave for triptophenolide is -1.03 V (vs. SCE) in 0.1 mol/L KCl, 6.0×10^(-3) mol/L H_2O_2, pH 4.3 HAc-NaAc buffer solution and its peak current is proportional to the concentration of triptophenolide over the range from 3.2×10^(-8) to 3.2×10^(-7) mol/L (r=0.9989). The mechanism of electrode reaction of polarographic catalytic wave is discussed.
出处
《分析试验室》
CAS
CSCD
北大核心
2005年第4期49-52,共4页
Chinese Journal of Analysis Laboratory
关键词
雷酚内酯
H2O2
线性扫描伏安法
极谱催化波
Triptophenolide
Hydrogen peroxode
Linear sweep voltammetry
Polarographic catalytic wave
