Title:
液体クロマトグラフ用遠紫外吸光度検出装置
Document Type and Number:
Japanese Patent JP6385299
Kind Code:
B2
Abstract:
In order to achieve high sensitivity without an increase in device complexity or cost, a far-ultraviolet absorbance detection device for liquid chromatography is provided with: an optical system including a light source that emits light including far-ultraviolet light, a diffraction grating for dispersing the light emitted from the light source, a flow cell through which a liquid is passed, a slit for selecting a predetermined wavelength of +1 order light diffracted by the diffraction grating and causing the light to enter the flow cell, a first photodetector for detecting the light transmitted by the flow cell, and a second photodetector for detecting light other than the +1 order light diffracted by the diffraction grating; a mechanism for evacuating or substituting the optical system with nitrogen gas; and a computation unit that calculates absorbance from an output signal from the first photodetector and an output signal from the second photodetector. The second photodetector is fixedly disposed.
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Inventors:
Yuichi Uchibo
Masao Kamabori
Toshimichi Aota
Masao Kamabori
Toshimichi Aota
Application Number:
JP2015041593A
Publication Date:
September 05, 2018
Filing Date:
March 03, 2015
Export Citation:
Assignee:
Hitachi High-Technologies Corporation
International Classes:
G01J3/18; G01J3/42; G01N30/26; G01N30/74
Domestic Patent References:
| JP4034341A | ||||
| JP2004012370A | ||||
| JP2007322321A | ||||
| JP63032351A | ||||
| JP11108912A |
Foreign References:
| US20070279616 |
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Toshiaki Watanabe
Sekiya Mitsuo
Toshiaki Watanabe