INSTRUMENT AND METHOD FOR ANALYZING TYPE OF SATURATED HYDROCARBON, AROMATIC HYDROCARBON, AND OLEFINIC HYDROCARBON CONTAINED IN GASOLINE, NAPHTHA, LIGHT OIL OR THE LIKE

摘要

PURPOSE: To quantitatively analyze gasoline, naphtha, light oil, etc., for saturated hydrocarbon, aromatic hydrocarbon, and olefinic hydrocarbon in a short time by using an extremely small amounts of sample. ;CONSTITUTION: A column is selected by means of a column change-over valve 52 and the flowing direction of a carrier (supercritical fluid) is switched by means of a flow passage change-over valve 55. Firstly, a sample is made to flow in the forward direction in each column and components passing through the column are measured. Then, the carrier is made to flow in the opposite direction (back flashing) and components adsorbed to the column are measured. Then each component content of the sample is calculated from the measurements.;COPYRIGHT: (C)1995,JPO