ELECTROLYTICAL MICROCELL FOR ONLINE PRECONCENTRATION OF TRACE-METALS IN FLOW SYSTEMS

被引：23

作者：

BEINROHR, E

机构：

[1] Department of Analytical Chemistry, Slovak Technical University, Bratislava, CS-812 37

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1990年 / 338卷 / 06期

关键词：

D O I：

10.1007/BF00323417

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The separation of trace metals from solutions of electrolytes by electrodeposition in a 30 μl electrolytical flow-through cell was studied. The working electrode of the flow cell was made from powdered spectral or glassy carbon. The electrodeposition is complete for Cu2+, Cd2+, Mn2+ and Pb2+, partial for Zn2+, Fe3+ and Ni2+. Mn2+ and Pb2+ can also be deposited by anodic oxidation on the working electrode. The deposition is complete up to sample flow rates of 3-4 ml/min. The deposited elements are dissolved by short-circuiting the electrodes and flushing the cell with diluted acid. The dissolved elements are determined on-line by flame AAS. Data evaluation through peak area measurement is discussed. © 1990 Springer-Verlag.

引用

页码：735 / 737

页数：3

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