CN105717075A - Excitation device for granular substance heavy metal elements and testing method - Google Patents
Excitation device for granular substance heavy metal elements and testing method Download PDFInfo
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- CN105717075A CN105717075A CN201610203454.8A CN201610203454A CN105717075A CN 105717075 A CN105717075 A CN 105717075A CN 201610203454 A CN201610203454 A CN 201610203454A CN 105717075 A CN105717075 A CN 105717075A
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- particulate material
- heavy metal
- hybrid chamber
- metal element
- injector
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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
Abstract
The invention discloses an excitation device for granular substance heavy metal elements and a testing method. A testing device comprises a pulse laser, a focusing lens, a mixing cavity, a sample injector, a gas inlet channel and an adsorption board, wherein the sample injector and the gas inlet channel are communicated with the mixing cavity, the focusing lens is located between the pulse laser and the adsorption board, the focus of the focusing lens is located on the adsorption board, and a spray nozzle is arranged on the mixing cavity and faces the focus. According to the method, argon and granular substances are introduced into the mixing cavity, the granular substances sprayed out after mixing form a granular substance area on the adsorption board, the focused pulse laser excites the granular substances to generate plasma, plasma signals are guided into a spectrometer, and heavy metal element information of granular substances is obtained through analysis. The problem that the substances splash and are not stable when the granular substances are directly tested with a laser induced breakdown spectroscopy technology is effectively solved, the granular substances are tested online, and the testing efficiency and the stability are effectively improved.
Description
Technical field
The present invention relates to atomic emission spectrum technical field, relate to excitation apparatus and the method for testing of a kind of particulate material heavy metal element.
Background technology
LIBS (LaserInducedBreakdownSpectroscopy, LIBS) technology is a kind of atomic emission spectrum technology, results from nineteen sixties.LIBS technology utilizes pulse laser to produce plasma with sample surfaces effect, and plasma gives off the photon of characteristic frequency in attenuation process, produces characteristic spectral line.By the analysis to characteristic spectral line, it may be determined that the kind of heavy metal element contained by sample and content.LIBS technology, without sample is carried out pretreatment, has real-time, quick, original position, sensitivity advantages of higher, has very big potentiality in commercial Application.
In development of modern industry process, particulate material (such as coal dust, Atmospheric particulates etc.) is more and more closely bound up with the production of the life of people and society.Therefore, needing a kind of analysis for particulate material and detection means badly, LIBS technology becomes a kind of potential selection.Use LIBS technology to test after what published patent and document were more report pressed powder pellet molding, but powder compaction process technique is relatively complex and time consuming more, is not inconsistent with the advantage of LIBS technology itself.
But (laser action point is little to be limited to the feature of LIBS technology self, plasma signal is easily disturbed and instability etc.), and particulate material is unstable, Stimulated Light effect is easily splashed, it is unfavorable for the generation of plasma signal, therefore, the test of particulate material is directly had very big uncertainty by LIBS technology.
Summary of the invention
For solving the problems referred to above, it is desirable to provide the excitation apparatus of a kind of particulate material heavy metal element and method of testing, can directly test the information of heavy metal element in particulate material.
For reaching above-mentioned purpose, technical scheme provided by the invention is as follows:
A kind of excitation apparatus of particulate material heavy metal element, including pulse laser, condenser lens, hybrid chamber, injector, inlet channel and adsorption plate, described injector all connects with hybrid chamber with inlet channel, described condenser lens is between pulse laser and adsorption plate, the focus of condenser lens is on adsorption plate, described hybrid chamber is provided with nozzle, and nozzle is towards described focus.
Further, the entrance of described hybrid chamber is connected with inlet channel and injector respectively by three way cock.
Preferably, described hybrid chamber is spherical, the entrance of described hybrid chamber and the center passing straight through hybrid chamber at nozzle place.
Further, described nozzle is provided with switch, is provided with the isolating membrane preventing particulate matter from entering in described inlet channel.
Further, described pulse laser is perpendicular to adsorption plate.
Preferably, described adsorption plate is fixed on moveable platform.Adsorption plate moves with platform, it is ensured that laser all acts on different granulomeres every time.
Further, described injector is automatic sampler.
Said apparatus is utilized directly to test the method for heavy metal element in particulate material, in hybrid chamber, argon is passed into by inlet channel, in hybrid chamber, particulate matter is passed into by injector, the nozzle ejection in mixed argon and the blended chamber of particulate matter, the particulate matter of ejection is adsorbed on adsorption plate and forms particulate material region, pulse laser is focused on particulate material region by condenser lens, pulse laser excites particulate matter to produce plasma, plasma signal is imported spectrogrph, analyzes the heavy metal element information obtaining particulate material.
Further, by a three-way interface, make the particulate material in injector enter in ar gas passage, make particulate matter follow argon and enter together in hybrid chamber.
Further, described injector is according to firm discharge automatic transport particulate matter, particulate matter range of flow 1～6g/min, argon flow amount scope 2～7L/min.
Compared with prior art, the present invention has following technical effect that
Present invention eliminates the compressing process to particulate material, and effectively overcome LIBS and directly test the problem that substance splash during particulate material is unstable, achieve the on-line testing of particulate material, effectively promote testing efficiency and stability.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention；
In figure: 1-pulse laser, 2-condenser lens, 3-particulate material region, 4-adsorption plate, 5-nozzle, 6-switchs, 7-hybrid chamber, 8-injector, 9-isolating membrane, 10-inlet channel.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in Figure 1, the excitation apparatus of particulate material heavy metal element disclosed by the invention, including pulse laser 1, condenser lens 2, hybrid chamber 7, injector 8, inlet channel 10 and horizontally disposed adsorption plate 4, injector 8 all connects with hybrid chamber 7 with inlet channel 10, condenser lens 2 is between pulse laser 1 and adsorption plate 4, the focus of condenser lens 2 is on adsorption plate 4, and hybrid chamber 7 is provided with nozzle 5, and nozzle 5 is towards described focus.During use, adsorption plate 4 preferred levels is placed, and pulse laser 1 and hybrid chamber 7 are positioned at above adsorption plate 4.
Further, the entrance of hybrid chamber 7 is connected with inlet channel 10 and injector 8 respectively by three way cock.Preferably, hybrid chamber 7 is spherical, the entrance of hybrid chamber 7 and the center passing straight through hybrid chamber 7 at nozzle 5 place, and pulse laser 1 is perpendicular to adsorption plate 4.Further, nozzle 5 is provided with switch 6, is provided with the isolating membrane 9 preventing particulate matter from entering in inlet channel 10.Preferably, adsorption plate 4 is fixed on moveable platform, and adsorption plate 4 structure is with viscosity stabilized, and composition is simple, needs the heavy metal element of detection without having in particulate material sample to be measured.Injector 8 is automatic sampler.
Apparatus of the present invention are utilized directly to test the method for heavy metal element in particulate material, in hybrid chamber 7, argon is passed into by inlet channel 10, in hybrid chamber 7, particulate matter is passed into by injector 8, the nozzle 5 in mixed argon and the blended chamber 7 of particulate matter sprays, the particulate matter of ejection is adsorbed on adsorption plate 4 and forms particulate material region 3, pulse laser 1 is focused on particulate material region 3 by condenser lens 2, pulse laser excites particulate matter to produce plasma, plasma signal is imported spectrogrph, by the analysis to spectral signal, thus obtaining the heavy metal element information of particulate material.By collection system, plasma signal can be imported spectrogrph.
Further, by a three-way interface, make the particulate material in injector 8 enter in ar gas passage 10, make particulate matter follow argon and enter in hybrid chamber 7 together, wherein, argon flow amount scope 2～7L/min, it is preferred that argon flow velocity is 5L/min；Particulate matter range of flow 1～6g/min, it is preferred that particulate matter flow is 1g/min.Further, injector 8 is according to firm discharge automatic transport particulate matter so that after particulate matter mixes with argon, reaches stable ejection state, it is ensured that the stability of testing result.
The present invention can directly test the information of heavy metal element in particulate material, overcome LIBS and be directly used in many difficult points when particulate material is tested, by fixing particulate matter, effectively reduce the uncertainty in test process, improve the stability of test；On the other hand, present invention eliminates the compressing process to particulate material, and effectively overcome LIBS and directly test the problem that substance splash during particulate material is unstable, it is achieved that the on-line testing of particulate material, effectively promote testing efficiency.
Certainly; the present invention also can have other various embodiments; when without departing substantially from present invention spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and deformation according to the present invention, but these change accordingly and deformation all should belong to the scope of the claims appended by the present invention.
Claims (10)
1. the excitation apparatus of a particulate material heavy metal element, it is characterized in that: include pulse laser (1), condenser lens (2), hybrid chamber (7), injector (8), inlet channel (10) and adsorption plate (4), described injector (8) all connects with hybrid chamber (7) with inlet channel (10), described condenser lens (2) is positioned between pulse laser (1) and adsorption plate (4), the focus of condenser lens (2) is on adsorption plate (4), described hybrid chamber (7) is provided with nozzle (5), nozzle (5) is towards described focus.
2. the excitation apparatus of particulate material heavy metal element according to claim 1, it is characterised in that: the entrance of described hybrid chamber (7) is connected with inlet channel (10) and injector (8) respectively by three way cock.
3. the excitation apparatus of particulate material heavy metal element according to claim 2, it is characterized in that: described hybrid chamber (7) for spherical, the entrance of described hybrid chamber (7) and the center passing straight through hybrid chamber (7) at nozzle (5) place.
4. the excitation apparatus of particulate material heavy metal element according to claim 1 and 2, it is characterized in that: described nozzle (5) is provided with switch (6), described inlet channel (10) is provided with the isolating membrane (9) preventing particulate matter from entering.
5. the excitation apparatus of the particulate material heavy metal element according to claim 1 or 3, it is characterised in that: described pulse laser (1) is perpendicular to adsorption plate (4).
6. the excitation apparatus of particulate material heavy metal element according to claim 1, it is characterised in that: described adsorption plate (4) is fixed on moveable platform.
7. the excitation apparatus of particulate material heavy metal element according to claim 1 and 2, it is characterised in that: described injector (8) is automatic sampler.
8. utilize the method for heavy metal element in the device to test particulate material described in claim any one of claim 1～7, it is characterized in that: in hybrid chamber (7), pass into argon by inlet channel (10), in hybrid chamber (7), particulate matter is passed into by injector (8), mixed argon and particulate matter spray through nozzle (5), the particulate matter of ejection is adsorbed on adsorption plate (4) upper formation particulate material region (3), pulse laser is focused on particulate material region (3) by condenser lens (2), pulse laser excites particulate matter to produce plasma, plasma signal is imported spectrogrph, analyze the heavy metal element information obtaining particulate material.
9. method of testing according to claim 8, it is characterized in that: by a three way cock, make the particulate material in injector (8) enter in ar gas passage (10), make particulate matter follow argon and enter together in hybrid chamber (7).
10. method of testing according to claim 8 or claim 9, it is characterised in that: described injector (8) is according to firm discharge automatic transport particulate matter, particulate matter range of flow 1～6g/min, argon flow amount scope 2～7L/min.
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| CN201610203454.8A CN105717075B (en) | 2016-03-31 | 2016-03-31 | A kind of excitation apparatus and test method of particulate material heavy metal element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030462A (en) * | 2018-08-21 | 2018-12-18 | 钢研纳克检测技术股份有限公司 | Different type inclusion area and the quantitatively characterizing method of content in a kind of steel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176148A (en) * | 1997-06-24 | 1998-03-18 | 煤炭科学研究总院北京煤化学研究所 | Fluid mixer |
| US5847825A (en) * | 1996-09-25 | 1998-12-08 | Board Of Regents University Of Nebraska Lincoln | Apparatus and method for detection and concentration measurement of trace metals using laser induced breakdown spectroscopy |
| JP2003080035A (en) * | 2001-09-12 | 2003-03-18 | Mitsubishi Heavy Ind Ltd | Device and method for denitration |
| CN102426160A (en) * | 2011-08-31 | 2012-04-25 | 华南理工大学 | Online gas-solid two-phase detection method for coal characteristics based on laser induction, and apparatus thereof |
| CN103575567A (en) * | 2013-10-30 | 2014-02-12 | 广东电网公司电力科学研究院 | Continuous flying ash sampling device based on emission spectrum measuring technology |
| CN103954592A (en) * | 2014-04-10 | 2014-07-30 | 郭锐 | Method used for detecting atmospheric heavy metal pollutants based on laser-induced-breakdown spectroscopy |
| CN104931299A (en) * | 2015-07-06 | 2015-09-23 | 山西大学 | Even continuous industrial powder sampling device and method for laser-induced detection |
| CN205484044U (en) * | 2016-03-31 | 2016-08-17 | 四川大学 | Particulate material heavy metal's trigger device |
-
2016
- 2016-03-31 CN CN201610203454.8A patent/CN105717075B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5847825A (en) * | 1996-09-25 | 1998-12-08 | Board Of Regents University Of Nebraska Lincoln | Apparatus and method for detection and concentration measurement of trace metals using laser induced breakdown spectroscopy |
| CN1176148A (en) * | 1997-06-24 | 1998-03-18 | 煤炭科学研究总院北京煤化学研究所 | Fluid mixer |
| JP2003080035A (en) * | 2001-09-12 | 2003-03-18 | Mitsubishi Heavy Ind Ltd | Device and method for denitration |
| CN102426160A (en) * | 2011-08-31 | 2012-04-25 | 华南理工大学 | Online gas-solid two-phase detection method for coal characteristics based on laser induction, and apparatus thereof |
| CN103575567A (en) * | 2013-10-30 | 2014-02-12 | 广东电网公司电力科学研究院 | Continuous flying ash sampling device based on emission spectrum measuring technology |
| CN103954592A (en) * | 2014-04-10 | 2014-07-30 | 郭锐 | Method used for detecting atmospheric heavy metal pollutants based on laser-induced-breakdown spectroscopy |
| CN104931299A (en) * | 2015-07-06 | 2015-09-23 | 山西大学 | Even continuous industrial powder sampling device and method for laser-induced detection |
| CN205484044U (en) * | 2016-03-31 | 2016-08-17 | 四川大学 | Particulate material heavy metal's trigger device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030462A (en) * | 2018-08-21 | 2018-12-18 | 钢研纳克检测技术股份有限公司 | Different type inclusion area and the quantitatively characterizing method of content in a kind of steel |
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| CN105717075B (en) | 2019-03-15 |
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