Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1983-04-11
1984-10-02
Adee, John
Gas separation
Means within gas stream for conducting concentrate to collector
55386, B01D 1508
Patent
active
044745885
ABSTRACT:
An unheated septumless on-column injector with two internal flow paths is provided. A syringe means is positioned adjacent and communicates in vapor-tight relationship with the inlet ends of the two internal flow paths. The first internal flow path accepts and guides a needle from said syringe means onto the column of a gas chromatograph to permit injection onto the column. The second internal flow path allows the syringe means to either be loaded from or purged into an attached, sealed container. The needle of the syringe means is movable between the first and second paths by external manipulation. In particular embodiments, carrier gas is provided to sweep the sample into the low diameter column and cooling means is provided to ensure that the point of injection of the liquid onto the chromatographic column is maintained at a temperature below the boiling point of the most volatile component of the liquid sample.
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F. Yang et al., "Splitless Sampling for Capillary Column Gas Chromatography", J. Chrom. V. 158, pp. 91-109 (1978).
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Adee John
Cole Stanley Z.
Nishimura Keiichi
Reitz Norman E.
Varian Associates Inc.
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