METHOD OF DETERMINING CORRESPONDENCE OF CHROMATOGRAPHIC PEAKS TO SAME COMPONENT AND APPARATUS THEREFOR Russian patent published in 2015 - IPC G01N30/02 

FIELD: chemistry.

SUBSTANCE: analysed sample is simultaneously analysed three times on chromatographic columns with non-polar and polar stationary phases. The first analysis includes the initial sample and the second and third analyses include the initial sample with changed concentrations of volatile components, wherein the change of concentration of the components of the initial sample is carried out using solid-phase extraction by analysing both the gas phase at a low temperature and the condensed phase at a higher temperature. An apparatus for determining correspondence of chromatographic peaks, having an apparatus for solid-phase extraction and thermal desorption, which is in the form of a detachable temperature-controlled cartridge with a granular sorbent, which is connected on through additional flow switches instead of a headspace sampler dosing loop.

EFFECT: larger number of volatile sample components determined, high accuracy of determining concentration of volatile sample components.

2 cl, 1 dwg, 1 tbl