稀土－钴－茜素氨羧络合剂异核络合物极谱吸附波的研究  

Studies on the Polarographic Adsorptive Wave of Heteronuclear Complex of Rare Earth-Cobalt-Alizarin Complexon

作　　者：崔毅[1] 李南强[1] 

机构地区：[1]北京大学化学系

出　　处：《高等学校化学学报》1994年第9期1314-1316,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：稀土－钴－茜素氨羧络合剂异核络合物极谱吸附波的研究崔毅，李南强（北京大学化学系，北京，１００８７１）关键词稀土异核络合物，络合吸附波，单扫极谱Ｌｅｏｎａｒｄ［１］曾用光度法初步确定了Ｌａ（Ⅲ）或Ｃｅ（Ⅲ）、Ｎｉ（Ⅱ）或Ｃｏ（Ⅱ）与茜素氨羧络合剂（ＡＬ...In the 0.4 mol/L acetate buffer solution,at pH 4.6,a sensitive adsorptive wave of heteronuclear complex of RE (Ⅲ)-Co(Ⅱ)-alizarin complexon(ALC)was obtained by single-sweep polarography with the exception of Sc,Lu,Yb and Tm,The peak height of derivative wave is proportional to CLa from 1. 0×10-8 to 2.0×10-6mol/L.By using of photometry and analysis of the complex precipitate,the composition of complex may be LaCo·(AtC)2(Ac)2 Cl2Na7·4H2O;On the mercury electrode,the adsorptive intensity can be arranged as : LaCo(ALC)2>La2(ALC)2>CoALC>ALC.The occupied area of each heteronuclear complex ion on the surface of electrode was detemnined as 1. 2- 1.4 nm2 which is commensurate with one ALC ion area,The possible constitution may be a sandwich structure.

关 键 词：稀土 钴 茜素氨羧 络合物 极谱 

分 类 号：O641.4[理学—物理化学]