Towards an on-chip gas chromatograph: The development of a gas injector and a dc plasma emission detector

Fiona G. Bessoth, Omar P. Naji, Jan C.T. Eijkel, Andreas Manz*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

56 Citations (Scopus)

Abstract

Work is reported on two components for a gas chromatograph-on-a-chip, namely an injector and a dc plasma emission detector. The injector uses two intersecting channels on a chip for injection. This geometry is commonly used in on-chip capillary electrophoresis, and is here for the first time applied for gas injection. Off-chip valves are employed to direct gas flows. Successful injection of a plug of air in helium is demonstrated by off-chip detection with a dc micro-plasma detector. The work on the dc plasma emission detector was aimed at general characterization of dc micro-plasmas and the detection of halogen atoms. Detection of bromine and chlorine is demonstrated from their atomic lines. A micro-plasma chip is coupled to a conventional gas chromatograph and specific detection of elements and molecular fragments in the eluted peaks is demonstrated. The detection limit for chlorine is shown to be about 8.10-10 g Cl s-1.

Original languageEnglish
Pages (from-to)794-799
Number of pages6
JournalJournal of analytical atomic spectrometry
Volume17
Issue number8
DOIs
Publication statusPublished - 23 Sep 2002
Externally publishedYes

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