CN105588810A - Multifunctional atomic spectrometer - Google Patents
Multifunctional atomic spectrometer Download PDFInfo
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- CN105588810A CN105588810A CN201510943605.9A CN201510943605A CN105588810A CN 105588810 A CN105588810 A CN 105588810A CN 201510943605 A CN201510943605 A CN 201510943605A CN 105588810 A CN105588810 A CN 105588810A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
- G01N21/6404—Atomic fluorescence
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a multifunctional atomic spectrometer which comprises a four-lamp-holder light source, a fluorescent lamp holder light source, an atomizer, an atomic absorption and detection unit, an atomic fluorescence detection unit, a gas path unit, a hydride unit, a light path system, a microcomputer system and an external device. The spectrometer integrates the functions of an atomic absorption instrument and an atomic fluorescence instrument, multiple purposes are achieved through one machine, the laboratory establishment cost is reduced, operation is conducted on the same software platform, performance is reliable, operation is convenient, the analysis efficiency is improved, and the multifunctional atomic spectrometer is widely suitable for the industries of mine metallurgy, petrochemical engineering, agriculture and forestry clay fertilizer, food pharmacy and the like, and is particularly suitable for detection conducted on mercury, arsenium, lead and other harmful elements in water, food, medicine and agriculture products by departments of environment monitoring, hygiene and epidemic prevention, quality monitoring and the like. The multifunctional atomic spectrometer has multiple functions, is small and particularly suitable for being arranged on various monitoring vehicles, and is the optimal detection device for dealing with emergencies endangering life safety of people and military gas defense and epidemic prevention.
Description
Technical field
The present invention relates to a kind of spectrometer, particularly relate to a kind of multi-functional atomic spectrometer.
Background technology
Heavy metal forms grave danger to China's Environmental security, agricultural product/food security, and the monitoring of strengthening heavy metal is significant. For adapting to monitoring demand, development and development of small-scale, customizations heavy metal analyser, have important practical significance. The Analysis of Heavy Metal of accurate quantification mainly adopts atomic emission spectrum principle, as Atomic Absorption Spectrometer, can measure constant and micro-trace elements analysis can be measured multiple element. The conventional atomic absorption spectrophotometer instrument of use for laboratory is started in the beginning of the seventies at the end of the sixties in last century both at home and abroad at present. Be developed so far, its stability, reliability all reach higher level; Hardware and software technology, the analytical method of instrument are also constantly updated raising. In traditional conventional analysis instrument development fixed pattern, atomic absorption spectrophotometer is always the instrument using in laboratory, belongs to " high, essence, complete " comprehensive large system. And atomic fluorescence is as an other class heavy metal analyser, analyzing extensive use aspect the metallic elements such as mercury. Therefore, common laboratory can possess above-mentioned two kinds of atomic spectrographs conventionally. Consider that atomic absorption spectrum is also divided into different atomizers (flame atomizer, graphite electrothermic atomizer), conventionally measure the content of beary metal of a sample comprehensively, need more than 2 equipment. And the spectral detection of the said equipment, light source, beam splitting system are all similarly, cause the very large redundancy of system.
Summary of the invention
The object of this invention is to provide a kind of multi-functional atomic spectrometer, solved the problem of mentioning in above-mentioned background.
For achieving the above object, the invention provides following technical scheme:
A kind of multi-functional atomic spectrometer, comprise four lamp socket light sources, bracket for fluorescent tube light source, atomizer, Atomic absorption detecting unit, atomic fluorescence detecting unit, gas circuit unit, hydride unit, light path system, microsystem and external equipment, described atomizer connects respectively four lamp socket light sources, bracket for fluorescent tube light source, Atomic absorption detecting unit, atomic fluorescence detecting unit, gas circuit unit and hydride unit, Atomic absorption detecting unit is also connected respectively light path system with atomic fluorescence detecting unit, light path system is connected with computer system also, microsystem also connects external equipment.
As preferred version of the present invention: described external equipment comprises computer and printer.
As preferred version of the present invention: described atomizer is Atomic absorption and atomic fluorescence all-in-one.
Compared with prior art, the invention has the beneficial effects as follows: spectrometer compatibility of the present invention the function of Atomic absorption and two kinds of instruments of atomic fluorescence, realize a tractor serves several purposes, reduce lab construction cost, on same software platform, operate, dependable performance, easy to operate, improve analysis efficiency, be widely used in the industries such as mine metallurgy, petrochemical industry, agricultural clay fertilizer, food pharmaceutical, be particularly useful for the detection of the departments such as environmental monitoring, health and epidemic prevention, quality surveillance to harmful elements such as mercury, arsenic, lead in water quality, food, medicine and agricultural product. Its multi-functional and all kinds of monitor vehicle of the especially suitable equipment of miniaturization are the optimum detection equipment that reply jeopardizes the accident of people's life safety and military gas defence, epidemic prevention.
Brief description of the drawings
Fig. 1 is structured flowchart of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, a kind of multi-functional atomic spectrometer, comprise four lamp socket light sources, bracket for fluorescent tube light source, atomizer, Atomic absorption detecting unit, atomic fluorescence detecting unit, gas circuit unit, hydride unit, light path system, microsystem and external equipment, described atomizer connects respectively four lamp socket light sources, bracket for fluorescent tube light source, Atomic absorption detecting unit, atomic fluorescence detecting unit, gas circuit unit and hydride unit, Atomic absorption detecting unit is also connected respectively light path system with atomic fluorescence detecting unit, light path system is connected with computer system also, microsystem also connects external equipment.
External equipment comprises computer and printer. Atomizer is Atomic absorption and atomic fluorescence all-in-one.
Operation principle of the present invention is: the present invention studies and mainly comprises 4 contents: 1. Atomic absorption and atomic fluorescence all-in-one light path design; 2. can be used for light path and light splitting design that quaternary element is analyzed simultaneously. 3. complete machine structure design; 4. carry out quantitative analysis for trace and trace element.
Atomic absorption and atomic fluorescence all-in-one light path design: according to Atomic absorption, transmission, fluorescence principle, design realizes the device of basic light path, emphasis development light source, atomizer, optical system and detection system. Propose meter can with the built-in power source special of common element lamp compatibility, and can mutually switch according to different types of element lamp. In power supply, adopt switch power technology and large scale integrated circuit.
Quaternary element is analyzed light path design simultaneously: adopt four lamp socket auto transformation modes, automatically select cathode modulation (copper, zinc, lead, cadmium), auto-wave long scan, automatic peak-seeking, deuterium lamp background mode, automatically set lamp current, automatic balancing, computer control Lookup protocol best combustion condition, simultaneously analytical test. Optimize monochromator, detector design theory, detects by slit designs and lamp time-sharing operation.
Complete machine structure design: on the basis of the corresponding control circuit of exploitation, the function such as design and develop shell mechanism, wavelength Lookup protocol, wavelength automatic scan, slit fluid drive, automatic peak-seeking, focus automatically; And increase security protection design, comprise fray-out of flame safeguard protection and warning, air is under-voltage safeguard protection and warning, the gas leakage safeguard protection of gas circuit case and warning etc.
Application demonstration for rural potable water: the detection demand for departments such as environmental monitoring, health and epidemic prevention, quality surveillances to harmful elements such as mercury, arsenic, lead in water quality, food, medicine and agricultural product, develop applicable type. And for rural potable water testing environment, set up detection method checking detection performance. Related detecting method is applied to all-in-one, forms dedicated analysis software and the operating specification of all-in-one.
Key problem in technology:
Key technology is the light path switching of Atomic absorption and atomic fluorescence. Because atomic fluorescence is by loose chromogen reason, adopt custom-designed protected type quartz stove low-temperature atomizer, minimizing fluorescent quenching is gentle to be disturbed mutually, improves atomization efficiency. In the process of analyzing switching, only need to change atomization system, convenient and swift. In integrated design, key technique also comprises:
1, utilize micro-fluidic chip technology to develop miniature hydride generator
Micro-fluidic chip is the cutting edge technology of focus development in the world in recent years, the application of this technology on miniature hydride, hydride generator all technical has been brought up to a new aspect, there is the advantages such as test sample size is few, reaction speed is fast, measurement result is accurate, stable and reliable for performance, per hourly can measure hundreds of sample, reagent consumption is reduced to and is less than 2ml from each 10ml, and instrument is further microminiaturized, for development multifunctional atomic absorption spectrometer is laid a good foundation.
2, development high performance hollow cathode lamp internal high-voltage power supply
High performance hollow cathode lamp is the new technology that developed recently gets up, the weak element lamp of more alternative luminous intensities improves the certainty of measurement of Atomic Absorption Spectrometer, but this element lamp generally needs external special high-voltage suppling power, bulky, cost is high, and operation inconvenience, has limited the development of this technology, this project propose meter can with the built-in power source special of common element lamp compatibility, and can mutually switch according to different types of element lamp. In power supply, adopt switch power technology and large scale integrated circuit, there is volume little, voltage stabilization, the advantages such as long working life.
3, development flame atomizer, electrothermic atomizer automatic switchover system
Flame atomizer, electrothermic atomizer linkage automatic switchover system are by organically molten being integrated of above-mentioned two kinds of critical components, compatible, can automatically switch as required. In device, adopt the electrothermic atomizer of designed, designed around flame atomizer easy on and off translative mode, to make this flexible operation, reliable and stable.
The sharp line rays pass through lens that element lamp sends is radiated on the atom vapor in graphite furnace, and transmitted light shines on entrance slit through speculum. Slit has diffraction, is equivalent to a spot light, and entrance slit is just on the focal plane of collimating mirror, and the illumination of penetrating after slit diffraction is mapped on collimating mirror, becomes directional light and penetrate after collimating mirror reflection. The directional light coming from collimating mirror is irradiated to grating, after grating beam splitting, the light of required wavelength is projected onto (grating is forwarded to the light of specific wavelength is projected to angle required on focusing objective len by computer control, on this work station, realizes by " wavelength is set ", " wavelength back to zero " and " wavelength is automatic ") on focusing objective len. Light, through being complex light before grating beam splitting, just becomes the collimated monochromatic ligth penetrating to different directions after grating beam splitting. The collimated monochromatic ligth line focus object lens of wavelength to be detected reflex on exit slit, after exit slit, enter detector (photomultiplier). The effect of optical splitter is to select the resonance line light beam of element to be measured to enter detector (light sending due to element lamp is not the Absorption Line of element to be measured, but includes the combining light of other clutters, the parts so optical splitter is absolutely necessary). The signal of telecommunication of detector output is delivered in the data acquisition card on work station through sampling hold circuit, and after capture card digitlization, (the absorbance numerical value of sample is taken the logarithm and tried to achieve this digitized signal by program exactly to transfer to routine processes. This instrument does background deduction with deuterium lamp, because the continuous spectrum that deuterium lamp ultraviolet region produces is more satisfactory, and the absorption line generally using in atomic absorption spectrography (AAS) is all at ultraviolet region. Element lamp issued light is irradiated on the atom vapor of graphite furnace through semi-permeable and semi-reflecting mirror, and deuterium lamp issued light is also irradiated on the atom vapor of graphite furnace through semi-permeable and semi-reflecting mirror, but two kinds of light beams are not to enter graphite furnace simultaneously. Element lamp and deuterium lamp luminous has certain order, and the two is not to continue luminously, and in the time that element lamp is luminous, deuterium lamp extinguishes, and in the time that deuterium lamp is luminous, element lamp extinguishes, and element lamp and deuterium lamp issued light are pulsed light. Automatic safe protective air-channel system: self-locking that air is under-voltage, leak self-locking, flame abnormal alarm; Adopt array architecture air-channel system: automatically accurately control gas flow, be equipped with novel choking system, effectively save argon gas consumption; Full titanium spray burning system, adopts the full titanium atomization of single seam 100mm, anticorrosion, anti-oxidant, high temperature resistant, never distortion; Atomic fluorescence adopts special protected type quartz stove low-temperature atomizer, reduces the gentle interference mutually of quencher, improves atomization efficiency. Many slits of two-way light path system, meets same sample copper, lead, zinc, four kinds of elements of cadmium and detects simultaneously; Atomizer system adopts Atomic absorption and the fast simple switching mode of atomic fluorescence. Lookup protocol one key test function: cathode modulation, wavelength, slit, automatically set lamp current, automatic balancing, controls the best combustion condition that arranges. Automatic balance function: energy and negative high voltage autobalance, element lamp energy and deuterium lamp energy autobalance.
Claims (3)
1. a multi-functional atomic spectrometer, it is characterized in that, comprise four lamp socket light sources, bracket for fluorescent tube light source, atomizer, Atomic absorption detecting unit, atomic fluorescence detecting unit, gas circuit unit, hydride unit, light path system, microsystem and external equipment, described atomizer connects respectively four lamp socket light sources, bracket for fluorescent tube light source, Atomic absorption detecting unit, atomic fluorescence detecting unit, gas circuit unit and hydride unit, Atomic absorption detecting unit is also connected respectively light path system with atomic fluorescence detecting unit, light path system is connected with computer system also, microsystem also connects external equipment.
2. a kind of multi-functional atomic spectrometer according to claim 1, is characterized in that, described external equipment comprises computer and printer.
3. a kind of multi-functional atomic spectrometer according to claim 1, is characterized in that, described atomizer is Atomic absorption and atomic fluorescence all-in-one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510943605.9A CN105588810A (en) | 2015-12-16 | 2015-12-16 | Multifunctional atomic spectrometer |
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| CN201510943605.9A CN105588810A (en) | 2015-12-16 | 2015-12-16 | Multifunctional atomic spectrometer |
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| CN105588810A true CN105588810A (en) | 2016-05-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018301A (en) * | 2016-06-28 | 2016-10-12 | 北京华夏科创仪器股份有限公司 | Method for detecting water quality and multifunctional spectrograph |
| CN108709864A (en) * | 2018-07-09 | 2018-10-26 | 北京普析通用仪器有限责任公司 | A kind of multi-functional atomic spectrometer |
| CN108896519A (en) * | 2018-05-21 | 2018-11-27 | 南京工程学院 | Double spectrum gas mercury analytical equipments and corresponding method |
| CN114324280A (en) * | 2021-12-30 | 2022-04-12 | 辽宁华一检测认证中心有限公司 | Atomic fluorescence spectrometer for detecting selenium content of food |
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| CN2586156Y (en) * | 2002-12-19 | 2003-11-12 | 权朕 | Atomic spectrum signal detector |
| WO2005111586A1 (en) * | 2004-05-13 | 2005-11-24 | As Laser Diagnostic Instruments | A portable device and method for on-site detection and quantification of drugs |
| CN2909245Y (en) * | 2006-06-14 | 2007-06-06 | 徐培实 | Multifunction atomic absortion spectrograph |
| CN201063020Y (en) * | 2006-10-26 | 2008-05-21 | 四川大学 | Tungsten filament electro-heat atom absorption spectrometer |
| CN202486049U (en) * | 2012-03-12 | 2012-10-10 | 北京市理化分析测试中心 | Atomic spectrum analysis apparatus |
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2015
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Patent Citations (5)
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| CN2586156Y (en) * | 2002-12-19 | 2003-11-12 | 权朕 | Atomic spectrum signal detector |
| WO2005111586A1 (en) * | 2004-05-13 | 2005-11-24 | As Laser Diagnostic Instruments | A portable device and method for on-site detection and quantification of drugs |
| CN2909245Y (en) * | 2006-06-14 | 2007-06-06 | 徐培实 | Multifunction atomic absortion spectrograph |
| CN201063020Y (en) * | 2006-10-26 | 2008-05-21 | 四川大学 | Tungsten filament electro-heat atom absorption spectrometer |
| CN202486049U (en) * | 2012-03-12 | 2012-10-10 | 北京市理化分析测试中心 | Atomic spectrum analysis apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018301A (en) * | 2016-06-28 | 2016-10-12 | 北京华夏科创仪器股份有限公司 | Method for detecting water quality and multifunctional spectrograph |
| CN108896519A (en) * | 2018-05-21 | 2018-11-27 | 南京工程学院 | Double spectrum gas mercury analytical equipments and corresponding method |
| CN108896519B (en) * | 2018-05-21 | 2021-04-27 | 南京工程学院 | Double-spectrum flue gas mercury analysis device and corresponding method |
| CN108709864A (en) * | 2018-07-09 | 2018-10-26 | 北京普析通用仪器有限责任公司 | A kind of multi-functional atomic spectrometer |
| CN114324280A (en) * | 2021-12-30 | 2022-04-12 | 辽宁华一检测认证中心有限公司 | Atomic fluorescence spectrometer for detecting selenium content of food |
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Application publication date: 20160518 |