摘要
研究发现在HAc-NaA c缓冲体系中，痕量Bi^3＋对KBrO3氧化结晶紫（CV）的褪色反应有较好的阻抑作用，据此建立了测定痕量Bi^3＋的新方法．确定了反应的最佳实验条件和动力学参数．方法线性范围为0．0-12μg／L，检出限为0．9×10^-10 g／mL．可用于中草药中痕量铋的测定．
In HAc-NaAc buffer solution, trace bismuth （Ⅲ） can sensitively inhibit the discoloration reaction of crystal violet（CV） oxidized by KBrO3. Based on this, a new method for determination of trace bismuth is established. The optimum conditions and kinetic parameters are obtained from the investigation. The calibration graph is linear in the range of 0. 0 - 12μg/L, and the detection limit is 0. 9×10^-10 g/mL. The method can be used for the determination of trace bismuth in Chinese herbal medicine with a satisfactory result.
出处
《沈阳理工大学学报》
CAS
2008年第1期83-86,共4页
Journal of Shenyang Ligong University
关键词
铋
结晶紫
微波消解
阻抑动力学光度法
bismuth
crystal violet
microwave digestion
inhibitory kinetic - spectorophotometry
作者简介
季剑波（1963-），男，副教授．研究方向：分析化学.
