铋—檞皮素极谱络合吸附波测定锰盐中的痕量铋  

Determination of Bismuth in Manganese Salts by Polarographic Adsorptive Complex Wave of Bismuth ( Ⅲ ) -Quercetin

作　　者：李南强[1] 张丽华[1] 

机构地区：[1]北京大学化学系,北京100871

出　　处：《冶金分析》1993年第6期7-9,共3页Metallurgical Analysis

基　　金：国家自然科学基金资助课题

摘　　要：在0.015至0.02mol/L H_2SO_4底液中,可获得灵敏的铋(Ⅲ)—檞皮素的络合吸附波.铋浓度由1.0×10^(-8)至6.0×10^(-6)mol/L与其二阶导数波有正比关系,检出限为5.0×10^(-9)mol/L.用其测定了试剂锰盐中10^(-4)的铋.测得电活性络合物组成为铋(Ⅲ):檞皮素=1:2,条件形成常数β=5.5×10^(-9).In the base solution of 0.015mol/L HaSO4 a sensitive adsorptive complex wave of Bi( Ⅲ)-quercetin can be obtained by using single-sweep polarography. The detection limit is down to .5.0x 10-9mol/L. It was used to determine bismuth in manganese salts. The composition of the complex was detected as Bi(Ⅲ) , quercetin = l : 2. The conditional stability constant was determined as 3 = .5.5xl09.

关 键 词：铋 测定 jie皮素 络合吸附波 锰盐 

分 类 号：TF801.3[冶金工程—有色金属冶金]