Method for gas chromatographic analysis of gas sample, involves generating peak for analyte such as hydrogen sulfide by differentiating chromatogram at location of analyte

摘要

The method involves guiding a sample by carrier gas through a separator unit that comprises a downstream thermal conductivity detector, which provides a chromatogram with peaks for different analytes as a measurement signal, where hydrogen is utilized as the carrier gas when using the thermal conductivity detector with a heated gold thread that is coated with parylene. A peak (12) is generated for an analyte such as hydrogen sulfide by differentiating a chromatogram (9) at a location of the analyte. An independent claim is also included for an arrangement for gas chromatographic analysis of a gas sample, comprising an evaluation unit.