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Issue 9, 1999
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An alternative GC-ICP-MS interface design for trace element speciation


The design, construction and performance characteristics of an easily removable interface to couple a gas chromatograph (GC) to an inductively coupled plasma mass spectrometer (ICP-MS) for trace element speciation is described. The interface is based on the use of a heated metallic tube where the last part of the capillary GC column is inserted. This metallic tube is connected to a metallic T-piece where a flow of argon carrier gas is introduced perpendicularly and externally to the metallic tube, creating a high velocity flow of intermediate sheath gas, which prevents condensation of the analytes eluting from the column on the walls of the T-piece or on the connection tubing to the ICP-MS torch. A flexible non-heated PTFE tube is used to connect the exit of the T-piece to the ICP-MS torch. This new interface has been applied to the separation and detection of different organometallic compounds of Se, S, Pb, Hg and Sn.

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Article type: Paper
DOI: 10.1039/A901760G
Citation: J. Anal. At. Spectrom., 1999,14, 1317-1322
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    An alternative GC-ICP-MS interface design for trace element speciation

    M. Montes Bayón, M. Gutiérrez Camblor, J. Ignacio García Alonso and A. Sanz-Medel, J. Anal. At. Spectrom., 1999, 14, 1317
    DOI: 10.1039/A901760G

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