Cuvette device

A technology of cuvettes and flow cuvettes, which is applied in the field of devices used in spectral analysis, can solve the problems of repeated configuration of functions, high cost of instruments, and influence on promotion, so as to reduce the signal-to-noise ratio, improve the rationality, and enhance the instrument The effect of integration

Active Publication Date: 2012-09-19
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Spectrophotometers and liquid chromatography photometric detectors, as instruments with the same principle, have repeated functions due to structural differences
Multi-wavelength scanning photometers a

Method used

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Embodiment 1

[0042]A cuvette device, comprising a cuvette support 1 and a conventional cuvette and a flow cuvette 2 installed on the cuvette support 1, by switching between the conventional cuvette and the flow cuvette 2, the Common UV-Vis spectrophotometric measurement, liquid chromatography multi-channel photometric detection, micro flow colorimetric measurement functions and other functions.

[0043] Described conventional cuvette is a known structure, and its structure is not described in detail here; described flow cuvette 2 is used to form the colorimetric channel of measured mobile phase, as Figure 1 ~ Figure 2 As shown, the flow cuvette 2 includes a closed cuvette body 21, and a flow colorimetric channel 22 is arranged in the cuvette body 21, and the diameter of the flow colorimetric channel 22 increases gradually along the flow direction to maintain a small pressure. Poor, inhibit flow back mixing and diffusion, and at the same time gradually increase the pipe diameter can also of...

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Abstract

The invention provides a cuvette device and relates to a device which is used for spectrum analysis. The cuvette device comprises a cuvette bracket and a cuvette, wherein the cuvette comprises a conventional cuvette which can realize a function of measuring the luminosity of common ultraviolet visible light split, and a flowing cuvette which can realize a function of detecting liquid chromatogram multichannel luminosity; the flowing cuvette comprises a cuvette body which is internally provided with a flowing colorimetric channel; the diameter of the flowing colorimetric channel is gradually increased along a flowing direction; the top of the cuvette body is provided with a sample feeding pipe and a sample discharging pipe which is downwards bent; and the sample feeding pipe is connected with a liquid chromatogram flowing pipe through a pipeline connector. The cuvette bracket comprises a base and a cylindrical bracket wall; the cylindrical bracket wall is provided with an optical fiber collimation switching-in connector and an optical fiber collimation switching-out connector; and the optical fiber collimation switching-in connector and the optical fiber collimation switching-out connector are respectively connected with optical fibers on two sides of the cuvette device through an optical fiber coupling connector. According to the cuvette device disclosed by the invention, one machine has a plurality of functions through a matched multipurpose spectrophotometer; and the cuvette device has the advantages of reasonable and reliable structure and can reduce the signal to noise ratio of an instrument.

Description

technical field [0001] The invention relates to a device used in spectrum analysis, in particular to a cuvette device which can be matched with a multi-purpose spectrophotometer as a liquid chromatography multi-channel array detector and a common transmission measurement. Background technique [0002] UV-visible detectors are the most configured detectors in liquid chromatography. With the development of technology and the improvement of application level, the use of multi-channel UV-visible detectors that can simultaneously measure multi-wavelength responses is becoming more and more popular. In liquid chromatography, the multi-channel detector can detect the spectral changes in the chromatographic outflow process, and realize qualitative, quantitative, peak purity inspection, fingerprint expression and other functions through the spectrum. In principle, a liquid chromatography photometric detector is a spectrophotometer that can achieve continuous measurement. However, due...

Claims

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Application Information

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IPC IPC(8): G01N21/03
Inventor 粟晖姚志湘葛军刘柳
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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