CN103063622B - Portable rapid element composition analyzer - Google Patents
Portable rapid element composition analyzer Download PDFInfo
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- CN103063622B CN103063622B CN201110323690.0A CN201110323690A CN103063622B CN 103063622 B CN103063622 B CN 103063622B CN 201110323690 A CN201110323690 A CN 201110323690A CN 103063622 B CN103063622 B CN 103063622B
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Abstract
The invention belongs to a detection device category, relates to an element spectroscopic analysis method, and particularly relates to a portable rapid element composition analyzer. The portable rapid element composition analyzer provided by the invention comprises a cable front end acquisition part and a cable rear end analyzing part which are connected through an optical fiber and a cable, wherein the front end acquisition part comprises a pulsed laser and a collector, and the laser head of the pulsed laser is aligned with a laser excitation lens assembly in a collector; and the rear end analyzing part comprises a laser power source, a time sequence control plate, a spectrometer and a computer, the time sequence control plate is connected with the spectrometer and the laser power source, and the computer is connected with the spectrometer and the time sequence control plate. The portable rapid element composition analyzer provided by the invention is applicable to industry fields or field fields such as metallurgical industry, geology exploration and environmentally-friendly detection, and can be used for rapidly carrying out qualitative and quantitative analysis on unknown samples; the unknown samples are subjected to qualitative analysis within few seconds, and meanwhile, the required elements are subjected to quantitative analysis; and the portable rapid element composition analyzer is portable, simple in operation and especially suitable for industry or exploration fields which have requirements on analysis time.
Description
Technical field
The invention belongs to checkout equipment category, relate to element spectrum analysis method, particularly Portable fast elementary-composition analyzer.
Background technology
At present, China's metallurgical industry, address is explored, and the elementary analysis detection technique of the industries such as environmental protection tests, still with ICP spectra methods, X-ray fluorescence method and AAS Determination are main.Although these methods energy accurate analysis go out the constituent content in sample, will carry out pretreatment to sample before analyzing, operating technology is complicated, expends time in, wastes manpower and material resources in a large number, even endanger personal safety.Therefore, a kind of application of Portable fast elementary-composition analyzer and popularization, will produce important and far-reaching impact to our detection industry.
Summary of the invention
For the above-mentioned problems in the prior art, the invention provides and a kind ofly rapid analysis is carried out to testing sample and had not only been easy to carry but also Portable fast elementary-composition analyzer simple to operate.
The technical scheme that the present invention is adopted for achieving the above object is: a kind of Portable fast elementary-composition analyzer, comprise the cable head end collecting part and back-end analysis part that are coupled together by optical fiber and cable, described front-end collection part comprises pulse laser and collector, and the laser head of pulse laser aims at the laser excitation set of lenses in collector;
Described back-end analysis part comprises Laser Power Devices, SECO plate, spectrometer and computer, and SECO plate is connected with Laser Power Devices with spectrometer, and computer is connected with SECO plate with spectrometer.
Described collector comprises spectral collection set of lenses, optical fiber interface, laser excitation set of lenses and umbrella angle demodulator, spectral collection set of lenses is connected with optical fiber interface by screw thread structure, the front end of spectral collection set of lenses is connected with umbrella angle demodulator, and laser excitation set of lenses is connected with umbrella angle demodulator.
Described pulse laser is connected with Laser Power Devices with water-cooled pipeline by cable.
Described SECO plate is connected by coaxial data line with Laser Power Devices with spectrometer; Described computer is connected by USB data line with SECO plate with spectrometer.
Described spectral collection set of lenses has 6 groups, and mean allocation, on collection surface, collects convergent point in order to regulate on optical axis direction.
Described collection plasma spectrometry by Optical Fiber Transmission in spectrometer.
The spectral signal that described collection is returned can be sent in the spectrometer of different-waveband respectively.
The angle of described umbrella angle demodulator can coordinate spectral collection set of lenses to adjust within the scope of 0-90 degree.
In described laser excitation set of lenses, lens position is adjustable, and it act as paired pulses laser convergent point and regulates, to ensure that laser excitation is on commitment positions.
Described optical fiber interface position-adjustable.
The present invention has the following advantages:
1. the present invention is applicable to metallurgical industry, and address is explored, and the use of the industry spot such as environmental protection tests or field condition, can carry out qualitative and quantitative analysis to unknown sample fast;
2. the present invention can carry out qualitative analysis to unknown sample within a few second, carries out quantitative analysis to required element simultaneously;
3. the present invention is easy to carry, simple to operate, and the industry or exploration that are specially adapted to there being demand analysis time are on-the-spot.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of collector in the present invention;
Fig. 3 is the front view of umbrella angle demodulator in the present invention;
Fig. 4 is the side view of umbrella angle demodulator in the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, a kind of Portable fast elementary-composition analyzer, system adopts LIBS analytic approach, and whole instrument is made up of two parts: Part I is front-end collection part, and Part II is back-end analysis part.Described front-end collection part comprises pulse laser 4 and collector 10, described collector 10 comprises spectral collection set of lenses 1, optical fiber interface 2, laser excitation set of lenses 3 and umbrella angle demodulator 9, the superlaser that pulse laser 4 is launched converges through laser excitation set of lenses 3, irradiate in testing sample surface, produce plasma, spectral collection set of lenses 1 plasma spectrum is collected, and by its by Optical Fiber Transmission in described back-end analysis part, carry out host computer analysis;
Described back-end analysis part comprises Laser Power Devices 5, SECO plate 6, spectrometer 7 and computer 8, and SECO plate 6 is connected with Laser Power Devices 5 with spectrometer 7, and computer 8 is connected with SECO plate 6 with spectrometer 7.By the clock signal that computer 8 Control timing sequence control panel 6 occurs, to control the sequential relationship of spectrometer 7 and Laser Power Devices 5.
Described pulse laser 4 is connected with Laser Power Devices 5 with water-cooled pipeline by cable.
Described SECO plate 6 is connected by coaxial data line with Laser Power Devices 5 with spectrometer 7.
Described computer 8 is connected by USB data line with SECO plate 6 with spectrometer 7.
Described spectral collection set of lenses 1 has 6 groups, and mean allocation, on collection surface, collects convergent point in order to regulate on optical axis direction.
Described collection plasma spectrometry by Optical Fiber Transmission in spectrometer 7.
The spectral signal that described collection is returned can be sent in the spectrometer 7 of different-waveband respectively.
The angle of described umbrella angle demodulator 9 can coordinate spectral collection set of lenses 1 to adjust within the scope of 0-90 degree.
In described laser excitation set of lenses 3, lens position is adjustable, and it act as paired pulses laser convergent point and regulates, to ensure that laser excitation is on commitment positions.
Described optical fiber interface 2 position-adjustable.
As shown in Figure 2, collector 10 comprises spectral collection set of lenses 1, optical fiber interface 2, laser excitation set of lenses 3 and umbrella angle demodulator 9, spectral collection set of lenses 1 is connected with optical fiber interface 2 by screw thread structure, the front end of spectral collection set of lenses 1 is connected with umbrella angle demodulator 9, and laser excitation set of lenses 3 is connected with umbrella angle demodulator 9.
As shown in Figure 3 and Figure 4, the bottom surface of umbrella angle demodulator 9 is regular hexagon structure, and in side view plane, the angle that its umbrella is opened can regulate, its adjusting angle is 0-90 degree, to ensure that spectral collection set of lenses 1 can collect plasma spectrometry spectral line in the axial direction.
When required test, determinand is positioned over the probe front end of pulse laser 4, or hand-held portable devices, press close to determinand.Described back-end analysis part is placed in temperature stabilization, the safety zone that power-supply fluctuation is little, in order to avoid be interfered.By computer 8, send finger to SECO plate 6.The work schedule relation of SECO plate 6 control impuls laser instrument 4 and spectrometer 7.Within tens microseconds of pulse laser 4 after activated plasma, open spectrometer 7, just can collect plasma spectrometry.Analyzed by computer plasma spectrum, draw the constituent content of sample in real time.
The DAWA200 type of the Shi Leibao company that pulse laser 4 adopts, output energy range is 0-200mJ.Generally in actual use, adopt energy to be the spectrum output image that 100mJ can obtain stability and high efficiency, also specifically can regulate laser energy according to the situation at scene simultaneously.
What spectrometer 7 adopted is the HR2000+ range of models spectrometer of Ocean Optics, by integrated different wave band, can realize from ultraviolet, visible ray to infrared full spectral coverage spectral matching factor.6 channel spectrum instrument of current employing, can by measure spectrum scope 200-820nm, and this spectral region section enumerates the characteristic spectral line of most of common elements, is applicable to the qualitative and quantitative analysis of various element.
Because the life cycle of plasma is very short, only have tens microseconds, and produce the initial stage at plasma, its characteristic spectral line is not obvious, so after needing accurate control plasma to produce, and the acquisition time of spectrometer 7.SECO plate 6, can in the scope of 655.35 microseconds, the lamp Q time delay of laser instrument is regulated with the step-length of 0.01 microsecond, and the delay that gathers after pulse laser 4 activated plasma, is started with spectrometer 7, can split hair computer for controlling, the sequential relationship of spectrometer 7 and pulse laser 4.
Meanwhile, based on above parameter, for different application conditions, user voluntarily according to the difference originally of institute's test sample, can carry out the correction of different parameters lower eigenvalue, sets up experimental data base, make measurement result more accurately and reliably.
Claims (9)
1. a Portable fast elementary-composition analyzer, it is characterized in that, comprise the cable head end collecting part and back-end analysis part that are coupled together by optical fiber and cable, described front-end collection part comprises pulse laser (4) and collector (10), and the laser head of pulse laser (4) aims at the laser excitation set of lenses (3) in collector (10);
Described back-end analysis part comprises Laser Power Devices (5), SECO plate (6), spectrometer (7) and computer (8), SECO plate (6) is connected with Laser Power Devices (5) with spectrometer (7), and computer (8) is connected with SECO plate (6) with spectrometer (7);
Described collector (10) comprises spectral collection set of lenses (1), optical fiber interface (2), laser excitation set of lenses (3) and umbrella angle demodulator (9), spectral collection set of lenses (1) is connected with optical fiber interface (2) by screw thread structure, the front end of spectral collection set of lenses (1) is connected with umbrella angle demodulator (9), and laser excitation set of lenses (3) is connected with umbrella angle demodulator (9);
The bottom surface of described umbrella angle demodulator (9) is regular hexagon structure, in side view plane, the angle that its umbrella is opened can regulate, its adjusting angle is 0-90 degree, to ensure that spectral collection set of lenses (1) can collect plasma spectrometry spectral line in the axial direction.
2. Portable fast elementary-composition analyzer according to claim 1, is characterized in that, described pulse laser (4) is connected with Laser Power Devices (5) with water-cooled pipeline by cable.
3. Portable fast elementary-composition analyzer according to claim 1, is characterized in that, described SECO plate (6) is connected by coaxial data line with Laser Power Devices (5) with spectrometer (7); Described computer (8) is connected by USB data line with SECO plate (6) with spectrometer (7).
4. Portable fast elementary-composition analyzer according to claim 1, is characterized in that, described spectral collection set of lenses (1) has 6 groups, and mean allocation, on collection surface, collects convergent point in order to regulate on optical axis direction.
5. Portable fast elementary-composition analyzer according to claim 1, is characterized in that, described collection plasma spectrometry by Optical Fiber Transmission in spectrometer (7).
6. the Portable fast elementary-composition analyzer according to claim 4 or 5, is characterized in that, collects the spectral signal of returning and can send into respectively in the spectrometer (7) of different-waveband.
7. Portable fast elementary-composition analyzer according to claim 1, is characterized in that, the angle of described umbrella angle demodulator (9) can coordinate spectral collection set of lenses (1) to adjust within the scope of 0-90 degree.
8. Portable fast elementary-composition analyzer according to claim 1, is characterized in that, the interior lens position of described laser excitation set of lenses (3) is adjustable.
9. Portable fast elementary-composition analyzer according to claim 1, is characterized in that, described optical fiber interface (2) position-adjustable.
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| CN201110323690.0A CN103063622B (en) | 2011-10-21 | 2011-10-21 | Portable rapid element composition analyzer |
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| CN201110323690.0A CN103063622B (en) | 2011-10-21 | 2011-10-21 | Portable rapid element composition analyzer |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558191B (en) * | 2013-09-27 | 2016-02-17 | 武汉新瑞达激光工程有限责任公司 | A kind of portable laser probe analytical instrument |
| CN103743710B (en) * | 2013-12-28 | 2015-11-04 | 华中科技大学 | Based on the portable laser probe analytical instrument of fiber laser |
| CN104931462A (en) * | 2014-03-17 | 2015-09-23 | 以恒科技(北京)有限公司 | Mixed light source focusing enhancing plasma detection system |
| CN106468660B (en) * | 2016-10-28 | 2024-03-22 | 河钢股份有限公司 | Online rapid detection device for scrap steel and metal |
| CN106654828B (en) * | 2017-02-20 | 2019-02-05 | 绍兴文理学院 | Short-pulse laser and product composition analysis method for product composition analysis |
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| US5781289A (en) * | 1996-11-05 | 1998-07-14 | Sabsabi; Mohamad | Method and apparatus for rapid in situ analysis of preselected components of homogeneous solid compositions, especially pharmaceutical compositions |
| CN101109699A (en) * | 2007-07-28 | 2008-01-23 | 中国科学院安徽光学精密机械研究所 | Multiple shaft differential optical absorption spectrometry method and apparatus for detecting vertical distribution of atmospheric composition |
| CN101655459A (en) * | 2009-09-18 | 2010-02-24 | 中国科学院安徽光学精密机械研究所 | Element spectral line reverse-extracting method of laser induced breakdown spectrum |
| CN201488593U (en) * | 2008-12-04 | 2010-05-26 | 陈杰 | Device for recovering afterheat of waste gas in boiler |
| CN201594075U (en) * | 2009-10-23 | 2010-09-29 | 唐怀民 | Portable detection system for metal elements in vegetables and food |
| CN202330285U (en) * | 2011-10-21 | 2012-07-11 | 中国科学院沈阳自动化研究所 | Portable fast elementary-composition analyzer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030049858A1 (en) * | 2001-07-15 | 2003-03-13 | Golden Josh H. | Method and system for analyte determination in metal plating baths |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5781289A (en) * | 1996-11-05 | 1998-07-14 | Sabsabi; Mohamad | Method and apparatus for rapid in situ analysis of preselected components of homogeneous solid compositions, especially pharmaceutical compositions |
| CN101109699A (en) * | 2007-07-28 | 2008-01-23 | 中国科学院安徽光学精密机械研究所 | Multiple shaft differential optical absorption spectrometry method and apparatus for detecting vertical distribution of atmospheric composition |
| CN201488593U (en) * | 2008-12-04 | 2010-05-26 | 陈杰 | Device for recovering afterheat of waste gas in boiler |
| CN101655459A (en) * | 2009-09-18 | 2010-02-24 | 中国科学院安徽光学精密机械研究所 | Element spectral line reverse-extracting method of laser induced breakdown spectrum |
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| CN202330285U (en) * | 2011-10-21 | 2012-07-11 | 中国科学院沈阳自动化研究所 | Portable fast elementary-composition analyzer |
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