CN104865206A - Single photoelectric tube five-channel atomic absorption spectrometer - Google Patents
Single photoelectric tube five-channel atomic absorption spectrometer Download PDFInfo
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- CN104865206A CN104865206A CN201510199360.3A CN201510199360A CN104865206A CN 104865206 A CN104865206 A CN 104865206A CN 201510199360 A CN201510199360 A CN 201510199360A CN 104865206 A CN104865206 A CN 104865206A
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Abstract
The invention discloses a single photoelectric tube five-channel atomic absorption spectrometer, which includes a main light plate, the main light plate comprises a hollow cathode lamp, a first concave mirror reflector, a flame center, an into-seam concave mirror reflector, an into-seam seat, an into-seam light shading plate, a flat field concave grating, a MgFe door bracket and a photomultiplier tube; a Mg and Fe sharp line control spectrum light door is installed on the MgFe door bracket, and a Ca, Cu and Zn three element sharp line control spectrum light door is installed on a concave grating Rowland circle determined by the flat field concave grating. By use of one photomultiplier tube to replace five photomultiplier tubes and a matched negative high voltage circuit and a detection circuit in the prior art, the single photoelectric tube five-channel atomic absorption spectrometer is simple to make, low in cost, small in size and simple in structure. A horizontal spectrum light door is used for Ca, Cu and Zn, a vertical spectrum light door is used for Mg and Fe, and the space is saved by layering installation of the light doors.
Description
Technical field
The present invention relates to the atomic absorption technique field of analytical chemistry, particularly relate to a kind of monochromatic light fulgurite Five-channel Atomic Absorption Spectrometer.
Background technology
At present, the photo-electric conversion element that known concave grating Five-channel spectrometer uses is photomultiplier.Analyze 5 kinds of elements simultaneously and need 5 photomultipliers, also need configuration 5 to overlap negative high voltage circuit and testing circuit, therefore motherboard circuit plate bulk complex structure greatly, manufacturing cost is higher.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the object of this invention is to provide the monochromatic light fulgurite Five-channel Atomic Absorption Spectrometer that a kind of structure is simple, volume is little, easily manufactured and cost is low.
To achieve these goals, the technical solution used in the present invention is:
A kind of monochromatic light fulgurite Five-channel Atomic Absorption Spectrometer, comprises hollow cathode lamp, the first concave mirror, flame kernel, enters to stitch concave mirror, enters to stitch seat, flat filed concave grating, spectrum optical gate, goes out to stitch reflective mirror and photomultiplier; Described hollow cathode lamp, enter to stitch concave mirror, enter to stitch seat, flat filed concave grating, spectrum optical gate and photomultiplier be installed on key light plate, described first concave mirror is positioned at immediately below hollow cathode lamp, and described spectrum optical gate comprises Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate, Mg spectrum optical gate, Fe spectrum optical gate; Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate lay respectively on the concave grating Rowland circle that formed by flat filed concave grating, and described Mg spectrum optical gate, Fe spectrum optical gate are installed on MgFe door bracket, are positioned at the concave grating Rowland circle formed by flat filed concave grating; Described flame kernel is at described first concave mirror and the sharp line focus place of one dimension that enters to stitch between concave mirror; The sharp line transmitting terminal of described hollow cathode lamp points to the first concave mirror, the sharp line of its one dimension sent to be reflexed on seam concave mirror by the first concave mirror, through described in enter to stitch concave mirror reflection, focus on described in enter to stitch seat, and be dispersed on flat filed concave grating, focus on the revolving door of described each spectrum optical gate through flat filed concave grating dispersion, when each spectrum optical gate is opened, each sharp line is by going out to stitch mirror reflection on photomultiplier.
Preferably, described Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate adopt horizontal spectrum optical gate.Further preferably, described Mg spectrum optical gate, Fe spectrum optical gate adopt rectilinear spectrum optical gate.Described monochromatic light fulgurite Five-channel Atomic Absorption Spectrometer also comprises bracket upright post, and MgFe door bracket is arranged on key light plate by this bracket upright post.
Concave mirror injected by the sharp line of hollow cathode lamp, the flame kernel of focusing, and inject after diffusion on seam concave mirror, focus on Rowland circle diameter end, inject on concave grating after diffusion, various spectrum focuses on Rowland circle respectively.Determine rotatablely to finely tune out seam reflective mirror position on Rowland circle by grating equation according to the sharp line wavelength of Ca, Cu, Mg, Fe, Zn, before mirror, spectrum optical gate is installed at 2mm place, when spectrum optical gate is opened, sharp line is gone out to stitch mirror reflection on photomultiplier by correspondence, when door is closed, sharp line is absorbed by optical gate, and photomultiplier can not absorb light signal.
The invention has the beneficial effects as follows: the present invention uses 1 photomultiplier to replace 5 photomultipliers of the prior art and supporting negative high voltage circuit and testing circuit, and make simple, cost is low.5 spectrum optical gates are arranged at optics mainboard higher slice by light injection and reflection direction.The sharp line being decided a kind of element in 5 kinds of elements by the switch controlling spectrum optical gate is detected by going out to stitch on mirror reflection to photomultiplier.Invent the little and simple Atomic Absorption Spectrometer of structure of a kind of novel volume thus.Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate use horizontal spectrum optical gate, and Mg spectrum optical gate, Fe spectrum optical gate use rectilinear spectrum optical gate, and the mode that optical gate is installed in this layering is conducive to saving space.Be specially adapted to by with the Instrument Design of the Atomic absorption type micro ultimate analysis based on atomic absorption spectrum and complex element lamp and manufacture.
Accompanying drawing explanation
Fig. 1 be the embodiment of the present invention 1 electro-optical package on each parts mount position schematic top plan view, eliminate two rectilinear spectrum optical gates on MgFe door bracket in this figure and go out to stitch reflective mirror accordingly;
Fig. 2 is the principle of work schematic diagram of the embodiment of the present invention 1.
In above-mentioned accompanying drawing, the corresponding relation of each parts and Reference numeral is as follows:
1, hollow cathode lamp; 2, the first concave mirror; 3, flame kernel; 4, enter to stitch concave mirror; 5, enter to stitch seat; 6, flat filed concave grating; 7, spectrum optical gate; 71, MgFe door bracket; 8, go out to stitch reflective mirror; 9, photomultiplier.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment also with reference to accompanying drawing, the present invention is described in more detail.Should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
As shown in Figure 1,
A kind of monochromatic light fulgurite Five-channel Atomic Absorption Spectrometer, comprise hollow cathode lamp 1, first concave mirror 2, flame kernel 3, enter to stitch concave mirror 4, enter to stitch seat 5, flat filed concave grating 6, go out to stitch reflective mirror 8 and photomultiplier 9, described hollow cathode lamp 1, enter to stitch concave mirror 4, enter to stitch seat 5, flat filed concave grating 6, photomultiplier 9 is installed on key light plate, described first concave mirror 2 is positioned at immediately below hollow cathode lamp 1, spectrum optical gate 7 comprises Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate, Mg spectrum optical gate, Fe spectrum optical gate, described Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate lays respectively on the concave grating Rowland circle that formed by flat filed concave grating, described Mg spectrum optical gate, Fe spectrum optical gate is installed on MgFe door bracket 71, be positioned at the concave grating Rowland circle formed by flat filed concave grating, described Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate adopt horizontal spectrum optical gate, described Mg spectrum optical gate, Fe spectrum optical gate adopt rectilinear spectrum optical gate, described flame kernel 3 is at described first concave mirror 2 and the sharp line focus place of one dimension that enters to stitch between concave mirror 4, the sharp line transmitting terminal of described hollow cathode lamp 1 points to the first concave mirror 2, the sharp line of its one dimension sent to be reflexed on seam concave mirror 4 by the first concave mirror 2, through described in enter to stitch concave mirror 4 reflect, focus on described in enter to stitch seat 5, and be dispersed on flat filed concave grating 6, focus on the revolving door of described each spectrum optical gate through flat filed concave grating 6 dispersion, when each spectrum optical gate is opened, each sharp line reflexes on photomultiplier 9 by going out to stitch reflective mirror 8.
The first concave mirror 2 injected by the sharp line of hollow cathode lamp 1, line focus flame kernel 3 is injected on seam concave mirror 4 after spreading, inject on flat filed concave grating 6 after focusing on Rowland circle diameter end, diffusion, focus on respectively on Rowland circle according to line spectrum grating equation, each spectrum.The seam position of reflective mirror 8 on Rowland circle is determined according to the sharp line wavelength of Ca, Cu, Mg, Fe, Zn, before mirror, each spectrum optical gate is installed at 2mm place, when spectrum optical gate is opened, sharp line is gone out to stitch reflective mirror 8 and reflexes on photomultiplier 9 and detect, when spectrum optical gate is closed, sharp line is received by spectral light door-inhale, and photomultiplier 9 can not absorb light signal
.
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (4)
1. a monochromatic light fulgurite Five-channel Atomic Absorption Spectrometer, is characterized in that: comprise hollow cathode lamp, the first concave mirror, flame kernel, enter to stitch concave mirror, enter to stitch seat, flat filed concave grating, spectrum optical gate, go out to stitch reflective mirror and photomultiplier; Described hollow cathode lamp, enter to stitch concave mirror, enter to stitch seat, flat filed concave grating, spectrum optical gate, photomultiplier be installed on key light plate, described first concave mirror is positioned at immediately below hollow cathode lamp, and described spectrum optical gate comprises Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate, Mg spectrum optical gate, Fe spectrum optical gate; Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate lay respectively on the concave grating Rowland circle that formed by flat filed concave grating, and described Mg spectrum optical gate, Fe spectrum optical gate are installed on MgFe door bracket, are positioned at the concave grating Rowland circle formed by flat filed concave grating; Described flame kernel is at described first concave mirror and the sharp line focus place of one dimension that enters to stitch between concave mirror; The sharp line transmitting terminal of described hollow cathode lamp points to the first concave mirror, the sharp line of its one dimension sent to be reflexed on seam concave mirror by the first concave mirror, through described in enter to stitch concave mirror reflection, focus on described in enter to stitch seat, and be dispersed on flat filed concave grating, focus on described each spectrum optical gate through flat filed concave grating dispersion, when each spectrum optical gate is opened, each sharp line is by going out to stitch mirror reflection on photomultiplier.
2. a kind of monochromatic light fulgurite Five-channel Atomic Absorption Spectrometer as claimed in claim 1, is characterized in that: described Ca spectrum optical gate, Cu spectrum optical gate, Zn spectrum optical gate are horizontal spectrum optical gate.
3. a kind of monochromatic light fulgurite Five-channel Atomic Absorption Spectrometer as claimed in claim 1, is characterized in that: described Mg spectrum optical gate, Fe spectrum optical gate are rectilinear spectrum optical gate.
4. a kind of monochromatic light fulgurite Five-channel Atomic Absorption Spectrometer as claimed in claim 1, it is characterized in that: other being also included in Rowland circle meets one or more spectrum optical gates that the optical channel position of line spectrum grating equation is installed, realize the optics key light plate design of hexa-atomic element or more than six elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510199360.3A CN104865206A (en) | 2015-04-24 | 2015-04-24 | Single photoelectric tube five-channel atomic absorption spectrometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510199360.3A CN104865206A (en) | 2015-04-24 | 2015-04-24 | Single photoelectric tube five-channel atomic absorption spectrometer |
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| CN104865206A true CN104865206A (en) | 2015-08-26 |
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| CN201510199360.3A Pending CN104865206A (en) | 2015-04-24 | 2015-04-24 | Single photoelectric tube five-channel atomic absorption spectrometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525817A (en) * | 2016-12-01 | 2017-03-22 | 昆山书豪仪器科技有限公司 | Hollow cathode direct-reading spectrometer |
| CN110579564A (en) * | 2019-10-29 | 2019-12-17 | 长沙开元弘盛科技有限公司 | device and method for simultaneously measuring mercury, cadmium, zinc and lead |
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| CN1063760A (en) * | 1991-11-30 | 1992-08-19 | 浙江大学 | Optical fibre transmission photo-electronic directly reading spectrograph |
| DE19738409A1 (en) * | 1997-09-03 | 1999-03-11 | Geesthacht Gkss Forschung | Arrangement for wavelength-dispersive analysis of fluorescence radiation from semiconductor wafer surface |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525817A (en) * | 2016-12-01 | 2017-03-22 | 昆山书豪仪器科技有限公司 | Hollow cathode direct-reading spectrometer |
| CN110579564A (en) * | 2019-10-29 | 2019-12-17 | 长沙开元弘盛科技有限公司 | device and method for simultaneously measuring mercury, cadmium, zinc and lead |
| US11754494B2 (en) | 2019-10-29 | 2023-09-12 | Changsha Kaiyuan Hongsheng Technology Co., Ltd | Device and method for simultaneously measuring mercury, cadmium, zinc and lead |
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Application publication date: 20150826 |