Coupling of capillary electrophoresis with ICP-MS for speciation investigations

被引：109

作者：

Michalke, B

Schramel, P

机构：

[1] GSF Research Centre for Environment and Health, Institute of Ecological Chemistry Neuherberg

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1997年 / 357卷 / 06期

关键词：

D O I：

10.1007/s002160050220

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

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 mu g/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：6

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