SPME for on-line volatile organo-selenium speciation

被引：26

作者：

Dietz, C ^{[1
]}

Pérez-Corona, T ^{[1
]}

Madrid-Albarrán, Y ^{[1
]}

Cámara, C ^{[1
]}

机构：

[1] Univ Complutense Madrid, Fac Chem, Dept Analyt Chem, E-28040 Madrid, Spain

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2003年 / 18卷 / 05期

关键词：

D O I：

10.1039/b211460g

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for speciation of volatile organo-selenium compounds is presented, using solid phase microextraction (SPME), thermal desorption by an in-house developed desorption unit and detection by different detectors such as AAS and ICP-MS. The procedure is simple, efficient, fast and solvent free. Dimethylselenium and dimethyldiselenium could be separated and quantified in less than two minutes, achieving detection limits of 0.7 and 0.9 mug L-1, respectively, when ICP-MS detection was used. No additional chromatographic system for the species separation was needed. A broad range of fiber coatings were compared, finding that commonly used stationary phases such as PDMS show a highly reduced affinity for the investigated species. The method was applied to quantification of organo-selenium content in garlic samples.

引用

页码：467 / 473

页数：7

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