Patent ID: 7827850

Claim:
A gas-liquid two-phase flow chromatographic apparatus for the chromatographic analysis using a carrier gas as a main mobile phase medium and a polymer which is not miscible with water as a solid phase, and comprising at least a carrier gas introduction portion, a sample injection portion, a capillary column having a layer of the solid phase formed on the inner peripheral walls thereof, a container portion thereof and a detection portion; wherein said sample injection portion is provided between said carrier gas introduction portion and the inlet of the capillary column, and includes medium introduction means capable of adding and mixing a liquid solvent as a second mobile phase medium to said carrier gas, a mechanism for controlling the amount of introducing said carrier gas and the amount of adding said mobile phase solvent, and a mechanism for controlling the temperatures of the flow paths in which the two mobile phase media come in contact; and wherein said analyzer is so constituted that the portions of the apparatus and the control mechanism are interlinked together in a manner that the liquid membrane thickness partly forms a plurality of manometric liquid plugs in the separation column which is in operation in the radial direction of the capillary and in the lengthwise direction of the column maintaining an interval, that the mobile phase media move toward the outlet of the column in a state where the gas phase and the liquid phase are intermittently alternating, and that the chromatographic analysis is conducted while executing the separation and developing by utilizing the distribution of the solvent membrane of the mobile phase media and the column solid phase.