Title:
CHROMATOGRAPH AND SAMPLE ANALYSIS METHOD
Document Type and Number:
Japanese Patent JP2021139697
Kind Code:
A
Abstract:
To provide a chromatograph and a sample analysis method, with which it is possible to improve the separation resolution of each component while shortening a measurement time.SOLUTION: A liquid analyzer (HPLC device) comprises: a main passage 23 where a first buffer unit 12, a first switching valve 13, an HPLC column 14, a second switching valve 15 and a second buffer unit 16 are interposed; and a bypass passage 24 for detouring the HPLC column 14. A control unit 32 controls a pump 11, the first switching valve 13 and the second switching valve 15, and switches between a first path where at least a portion of a fluid held by the first buffer unit 12 flows into the second buffer unit 16 through the main passage 23 and a second path where the fluid held by the second buffer unit 16 flows, between the first switching valve 13 and the second switching valve 15 of the main passage 23, into the first buffer unit 12 through the bypass passage 24.SELECTED DRAWING: Figure 1
Inventors:
ABE RYOJI
SUZUKI SHINJI
SUZUKI SHINJI
Application Number:
JP2020036460A
Publication Date:
September 16, 2021
Filing Date:
March 04, 2020
Export Citation:
Assignee:
USHIO ELECTRIC INC
International Classes:
G01N30/44; G01N30/26
Domestic Patent References:
| JPH07311188A | 1995-11-28 | |||
| JPS51104893A | 1976-09-17 | |||
| JP2006201039A | 2006-08-03 | |||
| JP2008185558A | 2008-08-14 | |||
| JP2010249588A | 2010-11-04 |
Other References:
REY A. MARIA ET AL.: "Column switching for difficult cation separations", JOURNAL OF CHROMATOGRAPHY A, JPN6021016770, 1997, pages 149 - 155, XP004099938, ISSN: 0004657288, DOI: 10.1016/S0021-9673(97)00810-8
Attorney, Agent or Firm:
Megumi Konishi
Shigeyuki Nagaoka
Shigeyuki Nagaoka