Anodic stripping voltammetry of trace metals by batch injection analysis

被引：54
|
作者：
Brett, CMA [1 ]
Brett, AMO [1 ]
Tugulea, L [1 ]
机构：
[1] UNIV BUCHAREST,FAC PHYS,DEPT BIOPHYS,BUCHAREST,ROMANIA
来源：
ANALYTICA CHIMICA ACTA | 1996年 / 322卷 / 03期
关键词：
batch injection analysis; mercury film electrodes; anodic stripping voltammetry; trace metals; flow injection; cadmium; copper; lead; zinc;
D O I：
10.1016/0003-2670(95)00588-9
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The application of batch injection analysis to the determination of trace metals in samples of volume less than or equal to 100 mu l by square wave anodic stripping voltammetry has been investigated in detail, using a programmable electronic micropipette. The in situ formation of a mercury film on a glassy carbon electrode substrate, the influence of preconcentration time, injection rate and injected volume of analyte ions have been studied and optimised procedures are recommended. Results for zinc, cadmium, lead and copper are presented, with particular emphasis on lead and cadmium, and nanomolar detection limits corresponding to sub-picomole quantities found. Comparison is made with flow-injection analysis and with experiments at wall-jet electrodes in continuous flow.
引用
收藏
页码：151 / 157
页数：7
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