A Micro Sample Introduction System for Gas Chromatography

Abstract

AN ideal sample introduction system for gas chromatography suitable for use with a variety of columns and detection devices should possess the following characteristics: (1) the entire sample should be delivered to the inlet of the column as a vapour over a short time-interval to keep dilution of the sample with carrier gas at a minimum; (2) the samples delivered should be of reproducible quantity or, better, of precisely known quantity; (3) the introduction of sample should not necessitate stopping or changing the flow-rate of carrier gas; (4) the quantity of air introduced with the sample should be minimal.