Ultraviolet-ray visible absorbing/fluorescent dual-purpose flow cell

A flow cell and fluorescence technology, applied in the direction of material analysis, measuring devices, instruments, etc. through optical means, can solve problems such as application difficulties

Inactive Publication Date: 2006-08-09
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of the above factors, it is difficult to apply the common liquid chromatography UV-visible absorption detector and fluorescence detector in the portable chromatography system.

Method used

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  • Ultraviolet-ray visible absorbing/fluorescent dual-purpose flow cell
  • Ultraviolet-ray visible absorbing/fluorescent dual-purpose flow cell
  • Ultraviolet-ray visible absorbing/fluorescent dual-purpose flow cell

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Embodiment Construction

[0020] The structural composition, working mode and principle of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] For the main components and assembly positions of the flow cell, see image 3 , the present invention is provided with cell body 31, light-guiding quartz capillary 32, polyetheretherketone (PEEK) liner 33, C-shaped spacer 34, self-focusing lens 35, sealing gasket 36 and 37, optical fiber 38 and 39, liquid flow Road pipelines 310 and 311 and other components. The light-guiding quartz capillary 32 is installed in the PEEK liner 33 and filled in the lumen of the cell body 31; the self-focusing lens 35 is arranged in the light entrance direction, and is sealed and fixed with the cell body 31 by sealing gaskets 36 and 37; the C-shaped gasket The sheet 34 is located between the self-focusing lens 35 and the PEEK liner 33, and the gap of the C-shaped spacer 34 is aligned with the direction of the flow path, and...

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Abstract

Present invention refers to integrated ultraviolet-visible absorbing/fluorescence two-purpose flow-through cell, referring to liquid chromatograph detector. It includes cell body, light guide quartz capillary, polyetheretherketone liner tube, self-focusing lens, seal washer, gasket, optical fiber and liquid flow path pipeline. Said Light guide quartz capillary is set in polyetheretherketone liner tube and filled in pipe cavity of cell body, self-focusing lens set in light entry direction fixed and sealed with cell body by seal washer, gasket located between self-focusing lens and polyetheretherketone liner tube, gasket notch aligned flow path direction to fill excess space, entry optical fiber, outlet optical fiber and in and out liquid pipe respectively fixed in cell body by joint and sleeve chuck to form sealed flow path.

Description

technical field [0001] The invention relates to a component for a liquid chromatograph, in particular to an optical fiber type ultraviolet-visible absorption / fluorescence dual-purpose flow cell for a portable liquid chromatograph detector. Background technique [0002] UV-Vis absorption detectors and fluorescence detectors are the two most common detectors found on liquid chromatography instruments. Flow cells are important components in both UV-Vis absorption and fluorescence detectors. After the light from the light source in the HPLC UV-Vis absorption detector passes through a certain length of the sample solution in the flow cell, part of the light energy is absorbed by the sample molecules, and the measured light intensity can be converted to obtain the absorbance data. A schematic diagram of a common Z-type UV-Vis absorption flow cell is shown in figure 1 . In the HPLC fluorescence detector, the light from the light source irradiates the sample solution in the fluor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/60G01N30/74G01N21/03
Inventor 付强王秋泉罗世鹏刘永玉
Owner XIAMEN UNIV
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