Instrument system suitable for synchronous on-line detection of adsorption spectrum and fluorescence spectrum

A fluorescence spectrum and absorption spectrum technology is applied in the field of flow injection online enrichment ultraviolet fluorescence detection instruments and equipment, which can solve the problems of difficult application of liquid chromatography ultraviolet-visible absorption detectors and fluorescence detectors.

Inactive Publication Date: 2010-07-21
XINJIANG MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Limited by the above factors, it is difficult to apply the common liquid chromatography UV-visible absorption detector and fluorescence detector in the portable chromatography system in this field.

Method used

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  • Instrument system suitable for synchronous on-line detection of adsorption spectrum and fluorescence spectrum
  • Instrument system suitable for synchronous on-line detection of adsorption spectrum and fluorescence spectrum
  • Instrument system suitable for synchronous on-line detection of adsorption spectrum and fluorescence spectrum

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Experimental program
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Embodiment 1

[0040] Embodiment 1: An instrument system suitable for synchronous online detection of absorption spectrum and fluorescence spectrum

[0041] See attached figure 1 , the present invention is applicable to the instrument system of synchronous on-line detection of absorption spectrum and fluorescence spectrum, which is composed of reciprocating plunger pump, sampling device, enrichment device, detection cell, light source, spectrometer, optical fiber, computer and data processing system software.

[0042] The reciprocating plunger pump, that is, the liquid transmission pump device, among the technical parameters of the reciprocating plunger pump used in the present invention, the flow rate can be adjusted to 0.1-4.0mL / min, the pump body has a bubble buffer function device, and the infusion material of the pump body can be Acid, alkali and some organic solvents, stable performance equipment is enough. The infusion links of each component are linked by polytetrafluoroethylene cap...

Embodiment 2

[0045] Embodiment 2: The working state of the instrument system suitable for simultaneous online detection of absorption spectrum and fluorescence spectrum

[0046] The sample is discharged from (27) through the plunger pump (29) according to the set time, and enters the activated carbon enrichment column (30) through the six-way valve (31) for online enrichment (32). Through the valve (31), the eluent (28) passes through the six-way valve to the activated carbon enrichment column (30), and the enrichment is washed to the detection cell (19) for spectral detection (22, 23) and then discharged from (32), The sample content was calculated from the change in spectral intensity (26). According to the absorption wavelength and emission wavelength of the analyte, the on-line detection and full-spectrum observation of the real-time set wavelength can be carried out, and the changes in the spectrum of the eluent in the flow cell and the elution process of the enriched sample can be ob...

Embodiment 3

[0048] Embodiment 3: A flow-through valve suitable for simultaneous online detection of absorption spectrum and fluorescence spectrum

[0049] The flow valve provided by the present invention is a sampling device, which is composed of a stator and a rotor. The materials are all polytetrafluoroethylene materials. The end points of the two groove channels correspond to each other; the stator is fixed on the fixed template, and the clip is driven by driving the clip, which is combined with the clip to control the rotation of the rotor. The rotation angle is fixed by the limit clip on the injection valve, and the rotor can only reverse Rotate 45 degrees clockwise or counterclockwise to switch the sample to the carrier flow path.

[0050] See attached figure 2 , describes the working state of the flow valve used in the sampling device provided by the present invention, (1, 6) is used to connect the detector, (2, 7) is the carrier or eluent connecting tube, (3, 8) is used to conne...

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Abstract

The invention discloses a system for synchronous on-line detection of adsorption spectrum and fluorescence spectrum. The system consists of a reciprocating plunger pump, a sample introduction device, an enrichment device, a detection cell, a light source, a spectrograph, an optical fiber, a computer and a data processing system, wherein the sample introduction device is provided with a six-way valve; a sample passes through the reciprocating plunger pump according to a predetermined time, enters an active carbon enrichment column through the six-way valve and is discharged after online enrichment; after finishing enrichment, the six-way valve is switched; an eluate enters the active carbon enrichment column through the six-way valve; an enrichment substance is washed and enters a flow cell and is discharged after spectrum detection is performed on the enrichment substance; the content of the sample is calculated based on the change of spectrum intensity; and the flow cell is integrally connected with five-way valve formed by a light source radiation optical fiber interface hole, an ultraviolet visible light optical fiber interface hole, a fluorescence spectrum optical fiber interface hole, a liquid inlet pipe hole and a liquid outlet pipe hole. The system realizes the on-line detection of the adsorption spectrum and the fluorescence spectrum; and an instrument has the characteristics of small volume, light weight, good reproducibility, convenient carrying, and fast sample treating speed, so the system has wide application fields.

Description

technical field [0001] The invention belongs to the field of equipment for chemical testing and analysis. Specifically, the present invention relates to a flow injection online enrichment ultraviolet fluorescence detection instrument and equipment, especially to a technology for optical fiber flow injection ultraviolet-visible absorption and fluorescence spectrum simultaneous online enrichment detection instrument system equipment field. Background technique [0002] The status quo of food safety testing technology and instruments and its impact on economy and politics prove that food safety has become an increasingly serious social problem and has attracted great attention from all countries in the world. To ensure food safety, testing is a necessary means. For this reason, it is very important to research on food safety testing methods and testing instruments, especially on-site rapid testing methods and instruments. At present, traditional analysis methods are still us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/08G01N21/31G01N21/64
Inventor 艾尔肯·依布拉音李明陈坚
Owner XINJIANG MEDICAL UNIV
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