ADSORPTIVE STRIPPING VOLTAMMETRIC DETERMINATION OF URANIUM WITH CEPHRADINE

被引：11

作者：

ALI, AMM ^{[1
]}

GHANDOUR, MA ^{[1
]}

KHODARI, M ^{[1
]}

机构：

[1] UNIV ASSIUT,FAC SCI,DEPT CHEM,QENA BRANCH,QENA,EGYPT

来源：

ANALYST | 1995年 / 120卷 / 04期

关键词：

URANIUM DETERMINATION; CYCLIC VOLTAMMETRY; DIRECT CURRENT ADSORPTIVE STRIPPING VOLTAMMETRY; CEPHRADINE;

D O I：

10.1039/an9952001065

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Uranium adsorbed with cephradine is reduced on a hanging mercury drop electrode. This property was exploited in developing a highly sensitive stripping voltammetric procedure for the determination of uranium. A detection limit 2 x 10(-9) mol l(-1) (0.5 mu g l(-1)) of uranium ion is obtained with an 180 s accumulation time. Cyclic voltammetry was used to characterize the interfacial and redox behaviour. The effects of various parameters are discussed. Experimental conditions include the use of 5 x 10(-6) mol l(-1) cephradine in 0.05 mol l(-1) sodium perchlorate (pH approximate to 6.5), an accumulation potential of 0.0 V versus SCE and a direct current stripping technique. The response is linear up to 5 x 10(-6) mol l(-1) uranium and the relative standard deviation at 1 x 10(-7) mol l(-1) UO2+ is 4.4%. The effect of other metal ions was investigated.

引用

页码：1065 / 1068

页数：4

共 21 条

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