摘要
在００２ｍｏｌ／ＬＨＮＯ３－８０×１０－５ｍｏｌ／ＬＥＢＢＢ溶液中，在单扫描示波极谱仪上，Ｚｒ（ＩＶ）－ＥＢＢＢ络合物有一灵敏的导数极谱波，Ｅｐ２＝－０３９Ｖ（ｖｓ．ＳＣＥ）。蜂电流与Ｚｒ（ＩＶ）浓度在３．１０×１０－７～２．４５×１０－６ｍｏｌ／Ｌ范围内成线性关系。回归方程为ｙ＝０．４７＋１０．９ｘ，相关系数ｒ＝０．９９９５。检出限为１．０×１０－７ｍｏｌ／Ｌ。试验表明，该极谱波属于络合物吸附波。本法用于测定岩石样品中微量锆，结果满意。
Polarographic wave of Complex of zirconium and Eriochrome Blue Black B (EBBB)and mechanism of electrode reaction and determination of zirconium in ores were studied. Results show that the polarographic wave is an adsorptive complex wave resulted from double electrons hydrogenated reduction of azo of coordinative group (EBBB) of the Complex. Peak POtential of the wave is -- 0. 39V(vs' SCE). The height of derivative wave is rectilinearly related to Zr(IV)concentration (3. 15 × 10 -7～24. 5 ×10-7mol / L, r=0. 9995 ). The method was successfully ap plied to determiation of microamounts of Zr(IV) in ores.
出处
《广东工业大学学报》
CAS
1996年第1期44-48,共5页
Journal of Guangdong University of Technology
关键词
锆
络会吸附波
铬蓝黑B
极谱法
测定
Zirconium. adsorptive complex wave
EBBB
polarography
determination
