线性变位极谱法研究 ⅩⅥ.铀(Ⅵ)—5—Br—PADAP—磺基水杨酸的配位吸附波  

INVESTIGATION ON POLAROGRAPHY WITH LINEARLY CHANGING POTENTIAL XVI.ADSORPTIVE-COMPLEX WAVE OF U(VI)-5-Br-PADAP-HO_3SC_6H_3(OH)COOH

作　　者：王晓平[1] 张祖训[1] 

机构地区：[1]南京大学化学系,南京210008

出　　处：《无机化学学报》1990年第3期309-313,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金

摘　　要：本文提出了铀(Ⅵ)-5-Br-PADAP-磺基水杨酸三元配合物的极谱配位吸附波。在pH为7.5-8.2的醋酸、三乙醇胺、乙醇底液中,该波的峰电位在-0.6855V(vs.SCE)。在1.00×10^(-7)-1.00×10^(-5)mol·dm^(-3)范围内,铀(Ⅵ)浓度与峰电流呈线性关系。对极谱波的电流、电位性质进行了研究,测定了配合物的组成、表观稳定常数和离解及生成速率常数。A method has been elaborated which utilizes the adsorptive-complex polarographic wave of U(VI)-5-Br-PADAP-HO3SC6H3(OH)COOH in HAc-TEA-Et.OH medium. The peak potential is -0.685V vs.SCE at pH 7.5-8.4. The peak current is linearly related to the concen-tration of U(VI) in the range of 1.00 × 10-7-1.00×10-5 mol · 1-1. The behavior of current-potential curve was studied and the composition, stability constant(K) and dissociation constant(AKb) of the complex were determined.

关 键 词：铀 配位吸附波 线性变位极谱 

分 类 号：O614.62[理学—无机化学]