摘要
铋（Ⅲ）－溴邻苯三酚红配合物吸附波及其应用＊刘家欣段友构黄诚朱苗力（吉首大学化学系湖南吉首４１６０００）匡向阳（永州市水文站湖南永州４２５０００）关键词铋溴邻苯三酚红配合物吸附波中图分类号Ｏ６５７．１４近年来，在某些有机试剂存在下用极谱法测定铋已有一...
In kolthoff buffer solution of pH10.5,Bi(Ⅲ) forms a complex with bromopyrogallol red and a sensitive adsorptive peak on the single sweep oscillopolarography appears at -0.65V (vs.SCE).The peak current is proportional to the concentration of Bi(Ⅲ) over the range 6.0×10 -8 to 6.0×10 -6 mol·L -1 .The detection precision is 2.0×10 -8 mol·L -1 .The determination of microamounts of Bi in hair and compound bismuth aluminate was made by this method and the result is satisfactory.The character of the polarographic wave and the mechanism of the electrode process has been studied.The results indicate that the polaropraphic wave is an adsorptive wave of complex.The adsorptive wave is caused by the adsorption of 1∶1 complex Bi(Ⅲ) and bromopyrogallol red ,followed by the reduction of to [Bi HBPR′].
出处
《化学研究与应用》
CAS
CSCD
1997年第2期171-174,共4页
Chemical Research and Application
基金
吉首大学科研基金
