双偶氮胂型试剂与铋(Ⅲ)-铅(Ⅱ)异核络合物极谱吸附波的研究  

Studies on the Polarographic Adsorptive wave of Is9onuclear Complex of Bi(Ⅲ)and Pb (H) with Some Biarsenazo Dyes

作　　者：张丽娟[1] 陈阳[2] 朱腾[2] 

机构地区：[1]北京化工大学,北京100029 [2]北京科技大学,北京100083

出　　处：《冶金分析》1999年第1期20-23,共4页Metallurgical Analysis

摘　　要：研究了Ｂｉ（Ⅲ）－Ｐｈ（Ⅱ）与八种变色酸双偶氮型试剂的示波极谱行为。其中五种含多卤素取代基的不对称结构试剂与Ｂｉ（Ⅲ）－Ｐｈ（Ⅱ）生成异核络合物，用单扫示波极谱法得到灵敏的络合吸附波。测定了络合物的组成，研究了电极过程和提出了电极反应机理．用巯基棉吸附和分离，可消除共存离子的于扰，建立了测定痕量铋的方法，用于铜合金和人发的分析，结果满意．In the medium of HCI, Bi(0283)and Ph(Ⅱ) with some biarsenazo dyes peduced a high sensitive polaroglaphicadsorptive wave of the isonuclear compact. aam odection limit was 1.5×10-9mol/L for Bi(Ⅲ). The co^itkin of bonudcarcomplex was odedtal. The reversibility of elctrode precoess,the character of adsorption and the mechanism of electrode reac-tion were studied,A series of comtants and Parameters were calculated.The proposed method has been applied to thedetermination of trace bismuth in copper be alloy and hair with satisfactory results.

关 键 词：单扫示波极谱法 铜合金 人发 铅 ASA试剂 

分 类 号：O614.433[理学—无机化学] O614.532[理学—化学]