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Multi-wavelength online detection equipment based on fiber optic single flow cell

A detection equipment and flow cell technology, applied in the field of chemical or physical equipment, can solve the problems of increasing sample diffusion, increasing the dead volume of the flow path, etc., so as to improve the separation efficiency, reduce the length of the fluid pipeline and reduce the volume of the flow path. Effect

Active Publication Date: 2016-06-08
北京佰纯润宇生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Variable wavelength detection equipment such as Figure 11 As shown, the disadvantage of this device is that it can only do single-wavelength online detection, and the flow cell needs to be built in to increase the dead volume of the flow path and increase the sample diffusion.

Method used

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  • Multi-wavelength online detection equipment based on fiber optic single flow cell
  • Multi-wavelength online detection equipment based on fiber optic single flow cell
  • Multi-wavelength online detection equipment based on fiber optic single flow cell

Examples

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Effect test

Embodiment 1

[0051] Such as figure 1 As shown, in this embodiment, the multi-wavelength online detection equipment based on the single flow cell of the optical fiber with the optical fiber of the optical fiber splitter is set behind the flow cell, including: a light source device, an optical fiber, a flow cell 4, a multi-fiber bundle optical fiber and the first A receiving device; wherein, the light source device includes a light source 1 and a convex lens 2; the light source 1 is located in front of the convex lens 2; the light source 1 is a deuterium lamp, and its power is 30W; the optical fiber is the second standard optical fiber 3; the length of the flow cell is 10mm, and the inner diameter is 0.5mm; a multi-fiber bundle fiber is the first optical fiber with optical fiber splitter; the first optical fiber with optical fiber splitter includes the first optical fiber optical splitter 5 and the first standard optical fiber 13; the optical fiber entrance of the first optical fiber optical...

Embodiment 2

[0053] Such as figure 1 As shown, in this embodiment, the multi-wavelength online detection equipment based on the single flow cell of the optical fiber with the optical fiber with the optical fiber splitter is set behind the flow cell. The difference from Embodiment 1 is that the first optical fiber splitter 5 is also called the optical fiber The splitter is detachable with the first standard optical fiber 13, the first standard optical fiber 13 and the first optical fiber splitter 5 are two detachable parts, the first standard optical fiber 13 is connected to the first optical fiber splitter 5 through an interface end face. .

Embodiment 3

[0055] Such as figure 1 As shown, in this embodiment, an optical fiber-based single-flow cell multi-wavelength online detection device with an optical fiber splitter is installed behind the flow cell. The difference from Embodiment 1 is that: three first The wavelengths of the filters 6 are 254, 280 and 750 nm, respectively.

[0056] It is determined through experiments that the sample has no absorption or very little absorption to a certain wavelength, usually long-wavelength light, which can be used as a reference. Correct the measured sample data.

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Abstract

The present invention relates to a multi-wavelength on-line detection device based on a single flow cell of optical fiber, which relates to a device for measuring the chemical or physical properties of materials by means of optical means, and in particular to a means for measuring the chemical or physical properties of materials flowing through a small transparent container by means of optical means. Physical properties of the device. The purpose is to provide a multi-wavelength on-line detection device based on a single flow cell based on an optical fiber, which is simple in structure, low in cost, small in volume of the flow path, the flow cell is placed outside the shell of the instrument, and can simultaneously detect multiple wavelengths. The optical fiber-based single-flow cell multi-wavelength on-line detection equipment of the present invention comprises: a light source device, a flow cell, a one-point multi-fiber bundle optical fiber and a first receiving device. The multi-wavelength on-line detection device of the invention has simple structure and low production cost, can realize multi-wavelength simultaneous detection without spectrometer and grating, and has external flow cell, which reduces pipeline volume and improves purification performance. The present invention is used in the field of light detectors for liquid chromatographs or chromatography systems.

Description

technical field [0001] The invention relates to a device for measuring chemical or physical properties of materials by optical means, in particular to a device for measuring chemical or physical properties of materials flowing through a small transparent container by optical means. Background technique [0002] At present, the general chromatographic column or chromatographic column needs to be connected with online detectors, including ultraviolet-visible light, conductivity, pH, evaporative light scattering, differential refraction, fluorescence and other detectors, which are configured according to different application needs, such as Figure 6 shown. [0003] Among them, the online ultraviolet and visible light detectors are the most widely configured ones, and the structures of the ultraviolet online detectors provided by different companies are also quite different. Such as: [0004] 1. Online three-wavelength detection equipment in the full wavelength range: [0005...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/01
Inventor 孙文改
Owner 北京佰纯润宇生物科技有限公司
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