CN206132602U - Multi -functional spectrum appearance - Google Patents
Multi -functional spectrum appearance Download PDFInfo
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- CN206132602U CN206132602U CN201620665203.7U CN201620665203U CN206132602U CN 206132602 U CN206132602 U CN 206132602U CN 201620665203 U CN201620665203 U CN 201620665203U CN 206132602 U CN206132602 U CN 206132602U
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Abstract
The utility model provides a multi -functional spectrum appearance adopts the integrative designing technique of atomic absorption and atomic fluorescence, realizes the integrative function of atomic absorption and atomic fluorescence. Atomic absorption function messenger sends the characteristic spectral line of being surveyed the element by the line source, is the quilt through atomizer and surveys the element absorption, and the transmitted light beam arrives detector photomultiplier behind the monochromator, and measurement sample vapour is confirmed the quilt and is surveyed the concentration of element atom the absorption of line source characteristic spectral line. The characteristic spectral line of being surveyed the element is sent by the line source to the atomic fluorescence function, and transmission process atomizer excites and is surveyed the element, and detector photomultiplier received through the produced atomic fluorescence signal of hydride generation combustion head flame excitation atom, through gathering signal amplification and digital analog conversion to the detector, accomplishes the collection of measurement sample vapour to the absorption signal of line source characteristic spectral line, calculates the concentration of confirming to be surveyed the element atom.
Description
Technical field
The utility model is related to field of spectral analysis technology, more particularly to a kind of multifunctional light spectrometer, and the spectrometer is adopted
Flame method Atomic absorption and the body technique of atomic fluorescence one, have atomic absorption spectrometry function and atomic fluorescence method spectroscopic methodology concurrently
Analytic function, for rural drinking water safety detection.
Background technology
Atomic Absorption Spectrometer (Atomic Absorption Spectrometer, AAS), also known as atomic absorption spectrophotometry light
Degree meter (Atomic Absorption Spectrophotometer, AAS), is that the ground state based on tested element in vapor phase is former
Son to the absorption intensity of its resoance radiation to determine sample in the constituent content a kind of spectrometric instrument.Atomic absorption spectrum
Instrument is widely used with it, and quantitative accurate, simple structure is easy to operate, and lower-price characteristic is widely used.Atom
Effort of the absorption spectrometer through scientific worker for many years, achieves significant progress.Particularly after the nineties, with calculating
Machine technology and semiconductor technology are developed rapidly, and the analytical instrument such as AAS are pushed in series of new techniques, the application of new device
One new stage.
Into 21 century, AAS with the features such as its is convenient, flexible, quantitative accurately, detection limit is low, price is relatively cheap, in ring
Trace element and heavy metal pollution context of detection have obtained widely should in border pollution detection, food safety detection, life science
With current safe drinking water is the important foundation protected public health, and concerns national economy and social stability, always by party and political affairs
Pay much attention at mansion.Good water quality is the basic premise for ensureing Health and Living quality.However, with economic fast development, ground
Table water and underground water pollution are increasingly severe, cause China's town and country water supply situation to allow of no optimist.In recent years, although governmental input huge fund
Accelerate the construction of town and country centralized water supply facility, but, the appearance and the generation of new pollution mode of emerging pollutant, accordingly
Pollutant monitoring, monitoring, population health risk assessment, early warning and alert ability of health risk etc. need raising badly, preferably to protect
Card safe drinking water health, protects population health.China's Atomic Absorption Spectrometer year dimensions of market more than 4000.But, have
Costly, maintenance cost is also higher for the instrument price of a little Atomic Absorption Spectrometers.And disclosure satisfy that at present for rural area
The drinking water safety detection same quasi-instrument of the market demand or few.
Utility model content
The market demand is detected for countryside potable water security, under the precondition for meeting detection demand, for lowering apparatus
Price, reduce testing cost, the utility model proposes a kind of multifunctional light spectrometer, the integrated flame method Atomic absorption of the spectrometer
With atomic fluorescence Integral design, for water quality detection.
Technical solutions of the utility model：
1. a kind of multifunctional light spectrometer, it is characterised in that comprising power subsystem, lamp power board, element lamp, outer light
Road, atomizer, monochromator, detector photomultiplier (PMT), atomic fluorescence atomization component, amplifier, analog-to-digital conversion
Device, detection control unit, computer；The power subsystem is used for as the lamp power board, analog-digital converter, described
Detection control unit provides supply of electric power；The outer light path comprising dispersion focusing system, speculum, entrance slit, focusing objective len,
Collimating mirror, grating, the element lamp is hollow cathode lamp；There are two paths in the light that the hollow cathode lamp source sends：
Path one, through the atomizer；The outer light path reflections of light Jing that the hollow cathode lamp source sends are focused to
Strip light spots, transmit Jing atomizer flames, and entrance slit is described to the collimating mirror described in the reflected mirror reflection Jing of transmitted light
Incident light reflection focusing is formed parallel complex light band and exposes to the grating by collimating mirror, and complex light is divided into parallel by the grating
Monochromatic light, then focusing objective len described in Jing, reflection focuses on Jing slits to the detector photomultiplier (PMT), the photoelectricity times
The optical signal for receiving is converted to analog electrical signal, then the collection of acquired partitioned signal by the pipe that adds lustre to, and analog-to-digital conversion is uploaded to calculating
Machine carries out computing and shows；
Path two, through the atomic fluorescence atomization component；The outer light paths of light Jing that the hollow cathode lamp source sends
Reflection is focused to strip light spots, transmits Jing atomizer flames, and Jing hollow cathode light-illuminatings excite hydride generator to generate
Sample flame, so as to produce the characteristic fluorescence signal of sample, photomultiplier transit light is converted to the fluorescence optical signals for receiving
Analog electrical signal, then the collection of acquired partitioned signal, analog-to-digital conversion, are uploaded to computer and carry out computing and show.
2. light-source system described in includes two light sources：One is the hollow cathode lamp for absorbing sample signal, i.e. element lamp；
Two is the deuterium lamp for absorbing background signal.
3. hollow cathode lamp group described in adopts rotatable lamp socket, and lamp socket quantity is 8.
4. the light that hollow cathode lamp source described in sends passes through in the same time and only passes through two paths wherein
One, i.e., through the atomizer or through the atomic fluorescence atomization component.
5. multifunctional light spectrometer described in detects that a kind of element correspondence uses a lamp position；Correspond to simultaneously during detection multiple element
Install and use multiple lamp positions.
6. hollow cathode lamp group described in includes 2 atomic fluorescence lamp positions, and its 6 lamp positions are Atomic absorption hollow cathode lamp
Position.
7. multifunctional light spectrometer described in carries out eliminating the ambient interferences in various complex samples using deuterium lamp correcting mode, i.e.,
Continuous spectral band absorption background signal is sent using deuterium lamp.
8. the bands of a spectrum broadband of deuterium lamp described in is between 0.2～3nm.
The utility model technique effect：
Compared with prior art, the utility model has advantages below：
1st, the utility model is filled by atomizer using Atomic absorption and the body technique of atomic fluorescence one with hydride
Module exchange is put, outer light path and detecting system is shared, realizes that Atomic absorption function and atomic fluorescence functions are integrated.The method
Be applied to drinking water quality detection and have both the advantage of flame atomic absorption method and atomic fluorescence function, both can with quick detection, and
Can realize that multielement is detected simultaneously.
2nd, detect that accurate signal to noise ratio is high, the degree of accuracy is high.
3rd, the multifunctional light spectrometer of the utility model design, is configured with Atomic absorption flame atomization component and atomic fluorescence
Atomization component can realize that Flame Atomic Absorption Spectrometry and atomic fluorescence are integrally tested on same instrument with flexible conversion, so as to
Reduce the purpose of testing cost.
Description of the drawings
Fig. 1 is the utility model instrument operation logic schematic flow sheet.
Fig. 2 atomic absorption spectroscopy functional sequence schematic diagrames.
Fig. 3 atomic fluorescence spectrometry functional sequence schematic diagrames.
Fig. 4 instrumental optics structural representations.
Fig. 5 instrument electrical structure schematic flow sheets.
Fig. 6 is without background deduction light path flow chart.
Fig. 7 is band background deduction light path flow chart.
Fig. 8-1 is atomic fluorescence atomizer schematic diagram.
Fig. 8-2 is flame method Atomic absorption atomizer schematic diagram.
Fig. 9 is Flame Atomic Absorption Spectrometry atomizer functional part schematic diagram.
Figure 10 is atomic fluorescence atomizer functional part schematic diagram.
Figure 11 is hollow cathode lamp component diagram and lamp position value displaying figure.
Reference lists as follows：1- hollow cathode lamps；2- semi-transparent semi-reflecting lens；3- deuterium lamps；4- standard lens；5- planes are anti-
Penetrate mirror 1；6- spherical reflectors 1；7- spherical reflectors 2；8- plane mirrors 2；9- entrance slits；10- concave mirrors；11-
Grating；12- exit slits；13- photomultiplier PMT1；14- photomultiplier PMT2；15- monochromators；16- atomizers；
The outer light path compound lens of 17-.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than the reality of whole
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment for obtaining, comes under the scope of the utility model protection.Below with reference to the accompanying drawings this practicality is described in detail new
Type embodiment.
Fig. 1 is the utility model instrument operation logic schematic flow sheet.Fig. 1 shows design principle of the present utility model,
Using Atomic absorption and atomic fluorescence one technology for detection water quality.The utility model is using Atomic absorption and atomic fluorescence one skill
Art, is exchanged by atomizer and hydride generation system module, shares outer light path and detecting system, realizes Atomic absorption function
It is integrated with atomic fluorescence functions.Specially：1. flame method atomic absorption spectroscopy, 2. with hydride generation system
Atomic fluorescence spectrophotometric.
Spectrometer (Spectroscope) is the scientific instrument that the light of complicated component is decomposed into spectrum line, by prism or is spread out
The composition such as grating is penetrated, using the light of the measurable body surface reflection of spectrometer.
Atomic absorption spectrum (Atomic Absorption Spectroscopy, AAS), i.e. atomic absorption spectrography (AAS), be
It is strong based on absorption of the gaseous ground state atom outer-shell electron to ultraviolet light and the corresponding atomic resonance radiation of visible-range
The analysis method that degree comes based on quantitative tested constituent content, is a kind of side of the specific gaseous atom of measurement to the absorption of light radiation
Method.
Atomic fluorescence spectrophotometric (AFS) be using the wavelength and intensity of atomic fluorescence spectral line carry out the qualitative of material and
Quantitative analysis method, is the spectral analysis technique between atomic emission spectrum (AES) and atomic absorption spectrum (AAS).
Atomizer is that atomic absorption spectroscopy carries out the atomizing device of sample.Sample is converted into free atom by it
Steam (ground state atom), so as to Absorption Characteristics radiation, seeks meter constituent content to be measured.The species of atomizer is a lot, substantially can divide
For flame atomizer and the big class of electrothermic atomizer two, the utility model uses flame atomizer.Atomizer
Function is to provide energy, makes samples dried, evaporation and atomization.Incident beam is absorbed here by ground state atom, therefore also may be used
It is considered as " absorption cell ".Basic demand to atomizer：There must be sufficiently high atomization efficiency；Must have good
Stability and reappear shape；Interference level simple to operate and low etc..
Fig. 2 is atomic absorption spectroscopy functional sequence schematic diagram.Under Flame Atomic Absorption Spectrometry mode state, detector light
Electric multiplier tube (PMT) receives the transmitted light beam signal through monochromator, and by gathering to detector, signal amplifies and modulus turns
Process is changed, the collection to measuring sample vapor to the absorption signal of line source characteristic spectral line is completed, is calculated and is determined tested element
The concentration of atom.
Fig. 3 atomic fluorescence spectrometry functional sequence schematic diagrames.Under atomic fluorescence mode state, detector photomultiplier transit
Pipe (PMT) is received makes its produce atomic fluorescence signal through hydride generation combustion head flame excitation atom, by detection
Device collection signal amplifies and analog-to-digital conversion process, completes to measuring sample vapor to the absorption signal of line source characteristic spectral line
Collection, calculates the concentration for determining tested Elements Atom.With reference to Fig. 1, Fig. 2 and Fig. 3, the spectrometer of the utility model offer is operated,
Specifically comprise the steps of：
Step one, line source sends the characteristic spectral line of tested element；
Step 2, line source (hollow cathode lamp) sends the sharp line spectra of fixed excitation wavelength.Through outer light path group
Close reflection from lens and be focused to strip light spots, then Jing atomizers combustion flame for tested element absorption, or the atom of sample
Combustion head flame excitation atom occurs through hydride makes its sample atom produce atomic fluorescence；
Step 3, transmitted light beam reaches detector photomultiplier (PMT) 1, atomic fluorescence exciting light after monochromator
Beam reaches detector photomultiplier (PMT) 2 through lens light gathering；This two paths can walk one, or walk another, but together
One time only had one.
Step 4, the amplified device of the photomultiplier PMT connects analog-digital converter, and the analog-digital converter is connected to
The detector of collection signal；The detector connects amplifier, and the signal for collecting is amplified, then by analog-digital converter, turns
Chemical conversion data signal, transmits to computer.
Step 5, computer analyzing digital spectrum signal, measurement sample vapor is to line source (hollow cathode lamp) feature
The absorption of spectral line, calculates the concentration for determining tested Elements Atom.
The utility model proposes the integrated flame method Atomic absorption of spectrometer and atomic fluorescence Integral design, for water quality inspection
Survey.Fig. 4 and Fig. 5 are respectively instrumental optics structural representation and instrument electrical structure schematic flow sheet.As illustrated, hollow cathode
The outer light path reflections of light Jing that lamp source sends are focused to strip light spots, transmit Jing atomizer flames, and the reflected mirror of transmitted light is anti-
Jing entrance slits are penetrated to collimating mirror, incident light reflection focusing is formed parallel complex light band and exposes to grating by collimating mirror, and grating will
Complex light is divided into collimated monochromatic ligth, then line focus object lens, and reflection focuses on Jing slits to detector photomultiplier transit, and photomultiplier transit light will
The optical signal for receiving is converted to analog electrical signal, then the collection of acquired partitioned signal, and analog-to-digital conversion is uploaded to computer and is transported
Calculate and show.
Atomic fluorescence function：The outer light path reflections of light Jing that hollow cathode lamp source sends are focused to strip light spots, transmit Jing
Atomizer flame, Jing hollow cathode light-illuminatings excite hydride generator to generate sample flame, so as to produce sample
Characteristic fluorescence signal, the fluorescence optical signals for receiving are converted to analog electrical signal, then acquired partitioned signal by photomultiplier transit light
Collection, analog-to-digital conversion is uploaded to computer and carries out computing and shows.Atomic fluorescence can be detected can generate at normal temperatures gaseous hydro
Thing, the element of fluorescence can be launched, a kind of transition element of As, Se, Hg etc. ten and special metallic element can be detected, although survey
Determine element limited, but those elements are critically important, detect very hard with Atomic absorption.Atomic fluorescence and Atomic absorption are in experiment
As complementary in room, most of metallic element and transition elements can be measured.
Fig. 6 is without background deduction light path flow chart.Fig. 7 is band background deduction light path flow chart.Band background deduction function
It is that, by increasing deuterium lamp and semi-transparent semi-reflecting lens, as shown in fig. 7, realizing that deuterium lamp correction carries out background deduction correction, background absorption is done
Disturb is in atomization process, to produce because of the molecule absorption of sample matrices material generation and light scattering.Background absorption interference one
As be corrected for by the way of buckle back scape, in the utility model be exactly carry out eliminating various complicated samples using deuterium lamp correcting mode
Ambient interferences in product.In instrument, using two light sources, one is as the hollow cathode lamp (element for absorbing sample signal
Lamp), it sends the sharp line spectra of element to be measured；Another is exactly that it sends a continuous light as the deuterium lamp for absorbing background signal
Spectrum, scope is about between 190nm～400nm.Hollow cathode lamp (element lamp) sends specific according to different analytical element needs
New hand's spectral line of spectral line and sample and background of a width of 0.0005nm of half-peak produce resonance and absorbed, obtain one and absorb letter
Number summation.What deuterium lamp sent is a continuous band, and the bands of a spectrum broadband of deuterium lamp is set by instrument slit on instrument
Impact, typically between 0.2～3nm, in this width, deuterium lamp mainly absorbs in a large number background signal, and sample is believed
Number it is that, due to being affected by integral and calculating, compared with background signal, it is a drop in the ocean (0.0005nm to be only capable of being considered:
2nm).Therefore the basis that deuterium lamp absorbs can be regarded as be background signal summation.
The signal that above two light source is surveyed has finally given one and has deducted background through the subtraction of data processing
Effect of signals real sample signal.
Fig. 8-1 is the front view of Fig. 9, and Fig. 8-2 is the front view of Figure 10.Figure 11 is hollow cathode lamp component diagram and lamp
Place value shows figure.Referring to Figure 11, lamp socket fix be 8, a kind of Element detection only use a lamp position, survey multiple element when, lamp can
To load onto simultaneously, the control rotation switching automatically of switching computer-chronograph control software.Hollow cathode lamp group includes 2 atomic fluorescence lamps
Position, other lamp positions are Atomic absorption hollow cathode lamp position.
The Atomic absorption that the utility model is related to and the body technique of atomic fluorescence one are to have both traditional flame method atomic absorption method
With atomic fluorescence method spectral technique, there is atomic absorption spectroscopy, such as (1) is selective strong, and (2) sensitivity is high, (3)
Analyst coverage is wide, (4) strong antijamming capability, (4) precision height etc..There is atomic fluorescence technological merit simultaneously, as (1) has relatively low
Detection limit, sensitivity height (2) interference it is less, spectral line fairly simple (2) disturb less, fairly simple (3) analytic set of spectral line
Curve linear wide ranges, (4) can realize multielement simultaneous determination.In summary, this spectrometer energy that the utility model is provided
The detection of rural potable water metal element content is enough applied to, the advantage of flame atomic absorption method and atomic fluorescence is taken into account, both can be with
Quick detection, again being capable of multielement detection simultaneously.And this method has the accurate signal to noise ratio of detection high, the high good effect of the degree of accuracy
Really.
It should be pointed out that the above specific embodiment can make those skilled in the art that this practicality is more fully understood
It is new, but the utility model is limited never in any form.Therefore, although this specification referring to the drawings and embodiment to this practicality newly
Type has been carried out detailed description, it will be understood by those skilled in the art, however, that still can modify to the utility model
Or equivalent, in a word, all technical schemes and its change without departing from spirit and scope of the present utility model, it all should contain
Cover in the middle of the protection domain of the utility model patent.
Claims (6)
1. a kind of multifunctional light spectrometer, it is characterised in that comprising power subsystem, lamp power board, element lamp, outer light path is former
Sonization device, monochromator, detector photomultiplier (PMT), atomic fluorescence atomization component, amplifier, analog-digital converter, detection
Control unit, computer；The power subsystem is used to be the lamp power board, the analog-digital converter, the detection control
Unit processed provides supply of electric power；The outer light path includes dispersion focusing system, speculum, entrance slit, focusing objective len, collimation
Mirror, grating, the element lamp is hollow cathode lamp；There are two paths in the light that the hollow cathode lamp source sends：
Path one, through the atomizer；The outer light path reflections of light Jing that the hollow cathode lamp source sends are focused to bar shaped
Hot spot, transmits Jing atomizer flames, and entrance slit is to the collimating mirror, the collimation described in the reflected mirror reflection Jing of transmitted light
Incident light reflection focusing is formed parallel complex light band and exposes to the grating by mirror, and complex light is divided into parallel monochrome by the grating
Light, then focusing objective len described in Jing, reflection focuses on Jing slits to the detector photomultiplier (PMT), the photomultiplier transit light
The optical signal for receiving is converted to analog electrical signal, then the collection of acquired partitioned signal by pipe, and analog-to-digital conversion is uploaded to computer and enters
Row computing shows；
Path two, through the atomic fluorescence atomization component；The outer light path reflections of light Jing that the hollow cathode lamp source sends
Strip light spots are focused to, Jing atomizer flames are transmitted, Jing hollow cathode light-illuminatings excite hydride generator to generate sample
Flame, so as to produce the characteristic fluorescence signal of sample, the fluorescence signal for receiving is converted to simulation electricity by photomultiplier transit light
Signal, then the collection of acquired partitioned signal, analog-to-digital conversion, are uploaded to computer and carry out computing and show.
2. a kind of multifunctional light spectrometer according to claim 1, it is characterised in that the light-source system includes two light
Source：One is the hollow cathode lamp for absorbing sample signal, i.e. element lamp；Two is the deuterium lamp for absorbing background signal.
3. a kind of multifunctional light spectrometer according to claim 1, it is characterised in that hollow cathode lamp group employing can revolve
Turn lamp socket, lamp socket quantity is 8.
4. a kind of multifunctional light spectrometer according to claim 1, it is characterised in that what the hollow cathode lamp source sent
Light passes through and only by wherein one of two paths in the same time, i.e., through the atomizer or through the original
Sub- fluorescent atom component.
5. a kind of multifunctional light spectrometer according to claim 1, it is characterised in that the multifunctional light spectrometer detection is a kind of
Element correspondence uses a lamp position；Correspondence installs and uses multiple lamp positions simultaneously during detection multiple element.
6. a kind of multifunctional light spectrometer according to claim 1, it is characterised in that the hollow cathode lamp group includes 2
Atomic fluorescence lamp position, its 6 lamp positions are Atomic absorption hollow cathode lamp position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620665203.7U CN206132602U (en) | 2016-06-28 | 2016-06-28 | Multi -functional spectrum appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620665203.7U CN206132602U (en) | 2016-06-28 | 2016-06-28 | Multi -functional spectrum appearance |
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| CN206132602U true CN206132602U (en) | 2017-04-26 |
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| CN201620665203.7U Expired - Fee Related CN206132602U (en) | 2016-06-28 | 2016-06-28 | Multi -functional spectrum appearance |
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Cited By (2)
| 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 |
| CN113670817A (en) * | 2021-07-28 | 2021-11-19 | 北京博晖创新生物技术股份有限公司 | Background light beam obtaining method, background deducting method and device |
-
2016
- 2016-06-28 CN CN201620665203.7U patent/CN206132602U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN113670817A (en) * | 2021-07-28 | 2021-11-19 | 北京博晖创新生物技术股份有限公司 | Background light beam obtaining method, background deducting method and device |
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