US 12,442,800 B2
Analyzing device
Yasuhiro Funada, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Filed by SHIMADZU CORPORATION, Kyoto (JP)
Filed on Feb. 15, 2022, as Appl. No. 17/672,482.
Application 17/672,482 is a division of application No. 15/506,820, abandoned, previously published as PCT/JP2014/072533, filed on Aug. 28, 2014.
Prior Publication US 2022/0170892 A1, Jun. 2, 2022
Int. Cl. G01N 30/36 (2006.01); B01D 15/40 (2006.01); G01N 30/32 (2006.01)
CPC G01N 30/36 (2013.01) [B01D 15/40 (2013.01); G01N 30/32 (2013.01)] 1 Claim
OG exemplary drawing
 
1. An analyzing method comprising steps of:
a) extracting a sample component and substances that constitute noise to analysis of the sample component by using supercritical fluid;
b) splitting the supercritical fluid containing the substances to flow separately in a first flow passage and a second flow passage by means of a splitting part;
c) controlling, by using a first pressure controlling unit for controlling a pressure in the first flow passage and a second pressure controlling unit for controlling a pressure in the second flow passage, flow rates of the supercritical fluid containing the substances that flow in each of the first flow passage and the second flow passage depending on a ratio of the pressure in the first flow passage to the pressure in the second flow passage;
d) separating the sample component from the supercritical fluid using a column provided on the first flow passage; and
e) setting a flow rate of the supercritical fluid containing the substances flowing in the first flow passage smaller than a flow rate of the supercritical fluid containing the substances flowing in the second flow passage, in the step of controlling.