Patent ID: 8353195
Filing Date: 2013-01-15
Classification: G01N

Abstract:
1. A miniaturized gas chromatography module, comprising: a gas injector unit having a gas injector sample inlet and outlet, the gas injector sample inlet being connectable with a source of a substance to be analysed, a separation column having a separation column inlet and outlet, the separation column inlet being in fluid communication with the gas injector sample outlet, a thermal conductivity sensor having a sensor inlet and outlet, the sensor inlet being in fluid communication with the separation column outlet, characterized by a pre-stage injector having a pre-stage injector sample inlet and outlet, the pre-stage injector sample inlet being connectable with the source of the substance to be analysed, a pre-stage module having a module inlet and outlet, the module inlet being in fluid communication with the pre-stage injector sample outlet and the module outlet being in fluid communication with the gas injector inlet, wherein the pre-stage module is adapted to transfer heat to a substance flowing from the module inlet to the module outlet; and wherein the pre-stage injector is adapted to provide a predetermined amount of a liquid substance to the pre-stage module and the pre-stage module is adapted to vaporize said amount of the liquid substance and provide the vaporized substance to the gas injector.