SUPERCRITICAL FLUID PROCESSING DEVICE

摘要

A supercritical fluid chromatograph includes a supercritical flow path, a mobile phase supply section for supplying a mobile phase containing liquid carbon dioxide, a sample introduction section, a sample separation section, a detector, and a pressure control valve. A valve post-stage flow path is connected to a fluid outlet of the pressure control valve, and the inside of the valve post-stage flow path is maintained by pressure maintaining means at a pressure by which a mobile phase from the fluid outlet of the pressure control valve is not vaporized.

主权项

1. A supercritical fluid processing device comprising:
a supercritical flow path through which a sample flows together with a mobile phase in a supercritical state; a sample separation section arranged on the supercritical flow path, for performing separation of the sample; a detector arranged on the supercritical flow path, on a downstream side than the sample separation section, the detector being for detecting a sample component separated by the sample separation section; a pressure control valve connected to the supercritical flow path on a downstream side than the detector, the pressure control valve having a fluid inlet and a fluid outlet, and being for controlling a pressure inside the supercritical flow path to a predetermined pressure and for converting a mobile phase into a supercritical state; a valve post-stage flow path having one end connected to the fluid outlet of the pressure control valve; and pressure maintaining means provided to the pressure control valve, on a side of the fluid outlet, the pressure maintaining means being for maintaining inside of the valve post-stage flow path at a pressure by which a mobile phase from the fluid outlet does not vaporize.