CN209606326U - A kind of spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension - Google Patents
A kind of spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension Download PDFInfo
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- CN209606326U CN209606326U CN201920042230.2U CN201920042230U CN209606326U CN 209606326 U CN209606326 U CN 209606326U CN 201920042230 U CN201920042230 U CN 201920042230U CN 209606326 U CN209606326 U CN 209606326U
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Abstract
The utility model relates to a kind of spark light sources with the spectroscopic analysis system that ladder optical path combines in two dimension, and the optical signal including generating the spark discharge structure of plasma and going out the plasma emission forms the two-dimension chromatic dispersion beam splitting system of two-dimension spectrum figure.The beneficial effects of the utility model are as follows: using spark discharge as plasma source, being divided using two-dimension chromatic dispersion beam splitting system, spectrometer wavelength covering is wider, and the sensitivity of spectrometer is higher, may be implemented to carry out quantitative analysis to microelement in pure metal.
Description
Technical field
The utility model relates to spectral analysis techniques, and in particular to a kind of spark light source is combined with ladder optical path in two dimension
Spectroscopic analysis system.
Background technique
Traditional atomic spectroscopic analysis technology has atomic absorption spectrum (AAS), inductively coupled plasma atomic emission
(ICP-OES) and spark source atomic emission spectrometry, AAS and ICP-OES belong to humid analysis, its shortcoming is that needing cumbersome
Sample pre-treatments, analysis speed are slow and there are environmental pollution, and spark source atomic emission spectrometry is typically only capable to the conductive sample of analysis
Product can not analyze non-conductive and solution example.The beam splitting system of spark source generallys use Rowland circle optical path cooperation photoelectricity
Multiplier tube or line array CCD are detected, another optical path is that flat field grating cooperation line array CCD in concave surface is detected, these light
The shortcomings that road, is that volume is larger, does not meet requirement of the modern instrument to miniaturization.In addition, beam splitting system wavelength covers model
It encloses relatively narrow, Na, K, the long wave analysis demand of Li et al., using the line array CCD that do not freeze as detector, sensitivity generally can not be met
It is lower, it is difficult to carry out quantitative detection to the impurity element in pure metal.
In view of this, special propose the utility model.
Utility model content
In view of the deficiencies in the prior art, the purpose of the utility model is to provide a kind of spark light sources and two-dimentional scala media
The spectroscopic analysis system that terraced optical path combines, spectrometer wavelength covering is wider, and the sensitivity of spectrometer is higher.
The technical solution of the utility model is as follows:
A kind of spark light source is with the spectroscopic analysis system that ladder optical path combines in two dimension, the fire including generating plasma
Flower discharging structure and the optical signal for going out the plasma emission form the two-dimension chromatic dispersion beam splitting system of two-dimension spectrum figure.
Further, above-mentioned spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension, the two dimension
Dispersion beam splitting system includes middle ladder light splitting optical path and area array CCD detector；The middle ladder light splitting optical path uses C-T type optics
Structure, using echelle grating as principal dispersion element, prism is as auxiliary dispersion element；The optical signal passes through the middle ladder
Two-dimension spectrum figure is formed after light splitting optical path to be imaged on area array CCD detector.
Further, above-mentioned spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension, the scala media
Terraced grating uses Littrow mode quasi- from face, and optical signal is separated by wavelength in vertical direction；Prism uses double dispersion structure,
The optical signal of different levels is separated in the horizontal direction.
Further, above-mentioned spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension, the scala media
The optical element of terraced light splitting optical path includes collimating mirror, prism, echelle grating and focus lamp；Light passes through after collimating mirror collimates
After the pre- dispersion of prism, it is projected to echelle grating, again after prism dispersion, line focus mirror images in the light after dispersion after focusing
On two-dimensional array ccd detector.
Further, above-mentioned spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension, the scala media
The optical element of terraced light splitting optical path further includes reflective microscope group；The light first passes through reflective microscope group before being projected to collimating mirror.
Further, above-mentioned spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension, the spark
Discharging structure includes the graphite carbon rod sample containing element to be measured or the metal sample containing element to be measured, electric discharge chamber, lens
And light-intaking tube；The electric discharge chamber is made of spark platen, spark table and spark table pedestal；The graphite carbon rod is set to described
On spark platen；Described light-intaking tube one end is connected to the electric discharge chamber, and the other end, which is connected to, is equipped with two-dimension chromatic dispersion light splitting system
Ladder optical chamber in the two-dimension chromatic dispersion of system；The lens are arranged in the light-intaking tube.
Further, above-mentioned spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension, the electric discharge
Chamber is also connected with inert gas feedway.
Further, above-mentioned spark light source makes the stone with the spectroscopic analysis system that ladder optical path combines in two dimension
The method that black carbon-point contains element to be measured is to drip the solution to be analyzed containing element to be measured to dry after graphite carbon rod.
The beneficial effects of the utility model are as follows:
1, it using spark discharge as plasma source, is divided using two-dimension chromatic dispersion beam splitting system, spectrometer wavelength
Covering is wider, and the sensitivity of spectrometer is higher, may be implemented to carry out quantitative analysis to microelement in pure metal.
2, using echelle grating as principal dispersion element, prism generates high-resolution two dimension color as auxiliary dispersion element
Spectrogram is dissipated, two-dimentional spectrogram is parsed, the intensity according to characteristic spectral line carries out quantitative analysis.
3, prism uses double dispersion structure, and light passes through prism dispersion twice, and the size of prism is the one of other dispersion systems
Half, system aberration is small.
Detailed description of the invention
Fig. 1 is that the spark light source of the utility model shows with the structure for the spectroscopic analysis system that ladder optical path combines in two dimension
It is intended to.
Fig. 2 is the cathode copper sample two-dimension chromatic dispersion spectrogram of the utility model one embodiment.
Fig. 3 is the Ag element alignment curve in the tough cathode of the utility model one embodiment.
Fig. 4 is the spark light source of the utility model with a reality of the spectroscopic analysis system that ladder optical path combines in two dimension
Apply the index path of example.
In above-mentioned attached drawing, 1, spark platen；2, graphite carbon rod；3, spark table；4, spark table pedestal；5, lens；6, entering light
Cylinder；7, ladder optical chamber in two dispersions；8, area array CCD；702, the first concave mirror；703, the second concave mirror；
704, collimating mirror；705, echelle grating；706, cross prisms；707, focus lamp.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
The utility model provides a kind of spark light source with the spectroscopic analysis system that ladder optical path combines in two dimension, including
It generates the spark discharge structure of plasma and makes the two dimension of the optical signal formation two-dimension spectrum figure of the plasma emission out
Dispersion beam splitting system.
The two-dimension chromatic dispersion beam splitting system includes middle ladder light splitting optical path and area array CCD detector；The middle ladder light splitting
Optical path uses C-T type optical texture, and using echelle grating as principal dispersion element, prism is as auxiliary dispersion element；The light
Signal forms two-dimension spectrum figure after the middle ladder light splitting optical path and is imaged on area array CCD.The echelle grating uses
Littrow mode quasi- from face separates optical signal in vertical direction by wavelength；Prism uses double dispersion structure, different levels
Optical signal in the horizontal direction separate.
As shown in Figure 1, the spark discharge structure includes graphite carbon rod 2, electric discharge chamber, lens 5 and light-intaking tube 6；It is described
Electric discharge chamber is made of spark platen 1, spark table 3 and spark table pedestal 4；The graphite carbon rod 2 contains element to be measured, is set to
On the spark platen 1；Described 6 one end of light-intaking tube is connected to the electric discharge chamber, and the other end, which is connected to, is equipped with two-dimension chromatic dispersion
Ladder optical chamber 7 in the two-dimension chromatic dispersion of beam splitting system；The lens 5 are arranged in the light-intaking tube 6.The electric discharge chamber also connects
Be connected to inert gas feedway (not shown) in the analysis process to electric discharge chamber persistently lead to people's inert gas (such as
Argon gas) Lai Tigao sensitivity for analysis.In the present embodiment, the method for making the graphite carbon rod contain element to be measured will contain to be measured
The solution to be analyzed drop of element is dried after graphite carbon rod.
The spectroscopic analysis system of the utility model is in use, dripping the solution example containing element to be measured in graphite carbon electrode
On (graphite carbon rod), put after the drying of graphite carbon electrode containing element to be measured on spark table, the graphite containing sample to be tested
Electrode carries out electrion plus 8000 volts of voltages therebetween as another electrode as an electrode, tungsten metal bar
Generate high temperature spark plasma.It discharges between graphite electrode and tungsten electrode, generates high-temperature plasma, high-temperature plasma hair
The optical signal of injection, through light-intaking tube 6, focuses in two-dimension chromatic dispersion on the slit of ladder light room 7 after the convergence of lens 5.Member to be measured
Element shines and forms two-dimension chromatic dispersion spectrogram (as shown in Figure 2) after two-dimentional echelle grating beam splitting system, images on area array CCD,
Qualitative intensity progress quantitative analysis according to characteristic spectral line is carried out according to the characteristic spectral line of element.Further, practical using this
, can be by different content element liquid solution drop to be measured on graphite carbon rod when novel spectroscopic analysis system, sample is according to content
Sequence from low to high is excited, and is established calibration curve (as shown in Figure 3), realizes the standard to unknown sample according to calibration curve
True quantitative analysis.
The spark light source of the utility model is sent out with the spectroscopic analysis system that ladder optical path combines in two dimension from spark light source
The illumination incident slit after concave mirror focus of light out, becomes directional light by collimating mirror, and middle ladder is projected after prism dispersion
On grating, the light after dispersion projects on imaging lens through prism for the second time, and the monochromatic light of different wave length is imaged in face by imaging lens
On battle array ccd detector.It is that wavelength cover is wide, sensitive using the advantages of two-dimension chromatic dispersion beam splitting system and refrigeration area array CCD
Degree is high and small in size, can satisfy the Qualitative and quantitative analysis requirement of impurity element in pure metal.
Fig. 4 show the index path of the utility model one embodiment.The light that spark plasma light source issues, through first
Reflecting mirror 702 reflects, and then reflects through the second reflecting mirror 703, after collimated mirror 704 collimates in parallel, through 706 (this implementation of prism
It is cross prisms in example) after pre- dispersion, it is projected to echelle grating 705, the light after dispersion is again after 706 dispersion of prism, warp
Focus lamp 707 images on two-dimensional array CCD8 after focusing.Element to be measured shine after two-dimentional echelle grating beam splitting system at
As qualitative in being carried out on area array CCD according to the characteristic spectral line of element, the intensity according to characteristic spectral line carries out quantitative analysis.First
The reflection microscope group of concave mirror 702 and the second concave mirror 703 composition, can fill under the premise of not increasing device length
Divide the length for extending optical path, helps preferably to carry out dispersion.
The system of the utility model can also will contain element to be measured in addition to that can measure the element to be measured on graphite carbon rod
Metal sample be installed on the position of the graphite carbon rod, the characteristic spectral line of each element is launched by spark discharging excitation,
Light splitting detection optical signal is carried out by two-dimension chromatic dispersion beam splitting system, the intensity of spectral line of tested element containing in the sample with the element
Corresponding relationship is measured into, to realize the quantitative analysis of microelement to be measured in pure metal sample.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, belonging to the utility model claims to these modifications and variations of the present invention
And its within the scope of equivalent technology, then the utility model is also intended to include these modifications and variations.
Claims (7)
1. a kind of spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension, it is characterised in that: including generation etc.
The spark discharge structure of gas ions and the optical signal for going out the plasma emission form the two-dimension chromatic dispersion point of two-dimension spectrum figure
Photosystem, the two-dimension chromatic dispersion beam splitting system include middle ladder light splitting optical path and area array CCD detector；The middle ladder is divided light
Road uses C-T type optical texture, and using echelle grating as principal dispersion element, prism is as auxiliary dispersion element；The light letter
Two-dimension spectrum figure is formed number after the middle ladder light splitting optical path to be imaged on area array CCD detector.
2. spark light source as described in claim 1 exists with the spectroscopic analysis system that ladder optical path combines in two dimension, feature
In: the echelle grating uses Littrow mode quasi- from face, and optical signal is separated by wavelength in vertical direction；Prism uses
Double dispersion structure in the horizontal direction separates the optical signal of different levels.
3. spark light source as claimed in claim 2 exists with the spectroscopic analysis system that ladder optical path combines in two dimension, feature
In: the optical element of the middle ladder light splitting optical path includes collimating mirror, prism, echelle grating and focus lamp；Light is by quasi-
After straight mirror collimation after the pre- dispersion of prism, it is projected to echelle grating, the light after dispersion is again after prism dispersion, line focus mirror
It is imaged in after focusing on two-dimensional array ccd detector.
4. spark light source as claimed in claim 3 exists with the spectroscopic analysis system that ladder optical path combines in two dimension, feature
In: the optical element of the middle ladder light splitting optical path further includes reflective microscope group；The light first passes through instead before being projected to collimating mirror
Light microscopic group.
5. spark light source as described in claim 1-4 is any is with the spectroscopic analysis system that ladder optical path combines in two dimension,
Be characterized in that: the spark discharge structure include the graphite carbon rod containing element to be measured or the metal sample containing element to be measured,
Discharge chamber, lens and light-intaking tube；The electric discharge chamber is made of spark platen, spark table and spark table pedestal；The graphite
Carbon-point is set on the spark platen；Described light-intaking tube one end is connected to the electric discharge chamber, and the other end, which is connected to, to be equipped with
Ladder optical chamber in the two-dimension chromatic dispersion of two-dimension chromatic dispersion beam splitting system；The lens are arranged in the light-intaking tube.
6. spark light source as claimed in claim 5 exists with the spectroscopic analysis system that ladder optical path combines in two dimension, feature
In: the electric discharge chamber is also connected with inert gas feedway.
7. spark light source as claimed in claim 5 exists with the spectroscopic analysis system that ladder optical path combines in two dimension, feature
In: the method for making the graphite carbon rod contain element to be measured drips the solution to be analyzed containing element to be measured after graphite carbon rod
Drying.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109632766A (en) * | 2019-01-10 | 2019-04-16 | 中国原子能科学研究院 | A kind of spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632766A (en) * | 2019-01-10 | 2019-04-16 | 中国原子能科学研究院 | A kind of spark light source is the same as the spectroscopic analysis system that ladder optical path combines in two dimension |
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