Coupling of capillary electrophoresis with ICP-MS for speciation investigations

被引：0

作者：

B. Michalke

Peter Schramel

机构：

[1] GSF Research Centre for Environment and Health,

[2] Institute of Ecological Chemistry Neuherberg,undefined

来源：

Fresenius' Journal of Analytical Chemistry | 1997年 / 357卷

关键词：

High Resolution; Analytical Procedure; Electrical Current; Capillary Electrophoresis; Analysis Time;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

An online hyphenation of capillary electrophoresis (CE) with inductively coupled plasma-mass spectrometry (ICP-MS) is developed, using a homemade nebulizer as the interface. The high resolution power of CE is used for the separation of metal species, whereas ICP-MS is taken for element specific detection with low detection limits. Metal species of standard solutions and real samples are separated and monitored by UV and ICP-MS. After optimization, electropherograms with high resolution were obtained, showing low detection limits around 1 μg/L (e.g. Pt-species) and very high resolution. Typical analysis times were below 22 min. Quality control aspects concerned species stability during the analytical procedure and stability of electrical current during nebulization. A possible interfering suction flow was estimated and found to be negligible.

引用

页码：594 / 599

页数：5