ULTRASENSITIVE ADSORPTIVE-CATALYTIC STRIPPING VOLTAMMETRY OF IRON IN THE PRESENCE OF HYDROXAMIC ACIDS AND HYDROGEN-PEROXIDE

被引：20

作者：

LU, J ^{[1
]}

WANG, J ^{[1
]}

YARNITZKY, C ^{[1
]}

机构：

[1] TECHNION ISRAEL INST TECHNOL,DEPT CHEM,IL-32000 HAIFA,ISRAEL

来源：

ELECTROANALYSIS | 1995年 / 7卷 / 01期

关键词：

IRON; STRIPPING VOLTAMMETRY; HYDROXAMIC ACIDS; N-BENZOYL-N-PHENYLHYDROXYLAMINE; CATALYTIC-ADSORPTIVE STRIPPING VOLTAMMETRY;

D O I：

10.1002/elan.1140070109

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An ultratrace catalytic-adsorptive stripping voltammetric procedure for the determination of trace amounts of iron is reported. The method is based on the interfacial accumulation of the iron-N-benzoyl-N-phenylhydroxylamine complex on the hanging mercury drop electrode, followed by catalytic reduction of the adsorbed complex in the presence of hydrogen peroxide. The presence of hydrogen peroxide greatly amplifies the adsorptive stripping response. Optimum experimental conditions have been explored to give an extremely low detection limit of 1.8 x 10(-10) M (10 ng/L) iron following 10 min accumulation. Analogous improvements are reported for other hydroxamic acid complexes of iron. Such acids hold great promise for developing additional adsorptive stripping procedures.

引用

页码：79 / 82

页数：4

共 9 条

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