CN2646699Y - Equipment for deducting shifting and pulsing of light source for atomic fluorescence spectrometer - Google Patents
Equipment for deducting shifting and pulsing of light source for atomic fluorescence spectrometer Download PDFInfo
- Publication number
- CN2646699Y CN2646699Y CN 200320100040 CN200320100040U CN2646699Y CN 2646699 Y CN2646699 Y CN 2646699Y CN 200320100040 CN200320100040 CN 200320100040 CN 200320100040 U CN200320100040 U CN 200320100040U CN 2646699 Y CN2646699 Y CN 2646699Y
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- CN
- China
- Prior art keywords
- light source
- atomic fluorescence
- fluorescence spectrometer
- data processor
- detection device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an atomic fluorescence spectroscopy device, which is applicable to deduct light source excursion and pulse. The utility model comprises a light source1, a focusing lens 3, an atomizer 4, a focusing lens 6, a sample tester 7, an amplifier, a data processor 8 and a light source tester 10; wherein the light source tester 10 is connected to the amplifier and the data processor 8 through a circuitry. The device is able to effectively eliminate the excursion of the light source, at the same time real-timely reflect the pulse of the light source in the sample testing process, thus perfectly overcoming the light source instability of the atomic fluorescence spectroscopy.
Description
Technical field
The utility model relates to a kind of detecting device that is used for atomic fluorescence, specifically, is a kind of deduction light source drift that is used to have the atomic fluorescence spectrometer that hydride takes place and device of pulsation of aiming at.
Background technology
Atomic fluorescence spectrometer is a kind of trace element analysis instrument.The hydride atomic fluorescence spectrometetry instrument be a kind of be exclusively used in detect some form easily hydride to human body poisonous and harmful or beneficial trace elements, as As, Sb, Bi, Hg, Se, Te, Ge, Sn, Pb, Zn, Cd etc.Industries such as environmental protection, potable water, sewage detection, food hygiene detection, health and epidemic prevention, medicine, pottery, metallurgy, geology have been widely used at present.Light source is an important component part in the atomic fluorescence spectrometer, and the stability of its light intensity directly affects apparatus measures result's stability and accuracy.At present in the atomic fluorescence spectrometer of at home and abroad producing, substantially with hollow negative electrode lamp as light source.Hollow cathode modulation stability is better than electrodeless discharge lamp, but its drift and pulsation are troubling problem, especially a mercury (Hg) lamp that the boundary is analyzed in puzzlement all the time, alters a great deal with its light intensity of variation of environment temperature, and is nonlinearities change.Therefore the instability of light source has become a bottleneck of further raising instrument performance index.
The mode of employing twin-beam list detecting devices such as twin-beam ultraviolet spectrophotometer both domestic and external overcomes the instability of light source, and its measuring principle block diagram is seen Fig. 3.Be characterized in: (1) light source 1 its supply current (or voltage) in the whole sample measuring process is constant; (2) detect light 11 and be in (promptly parallel) on the same direction with incident ray 11,12,13.Its advantage is a shared cover testing circuit and a detecting device; Shortcoming is that (make incident ray 11 full impregnateds or be all-trans by rotating mirror 14) alternately measured in reference and sample timesharing.Though this mode can effectively be eliminated the drift of light source, can not reflect the light source pulsation in the sample measurement process in real time.
The measuring principle block diagram of atomic fluorescence spectrometer is seen Fig. 4, its principal feature is: (1) does not influence its serviceable life again for the luminous intensity that can improve light source, light source is only just powered when signal sampling in the whole sample measuring process, and be big current, narrow pulse power supply, all the other times are little DC current (or small-pulse effect electric current) preheating; (2) detect light and incident ray not on same direction (angled); (3) no beam splitting system.Because the difference on these measuring principles, atomic fluorescence can't be eliminated the drift of light source with the mode of twin-beam list detecting device.
The utility model content
The purpose of this utility model provides a kind of deduction light source drift of atomic fluorescence spectrometer and device of pulsation of being used for.
The deduction light source drift of atomic fluorescence spectrometer and the device of pulsation of being used for described in the utility model comprises light source, condenser lens, atomizer, condenser lens, sample detector, amplifier and data processor and light source detection device.Described light source detection device is connected with amplifier and data processor by circuit.
The sub-fraction light of described light source is to shine directly on the light source detection device or by light transmitting fiber from light source to lead on the light source detection device.
Device described in the utility model can be eliminated the drift of light source effectively, can reflect the light source pulsation in the sample measurement process again in real time, can overcome the instability of light source in the atomic fluorescence spectrometer well.
Description of drawings
Fig. 1 is the device of deduction light source drift described in the utility model and pulsation;
Fig. 2 is the theory diagram of device described in the utility model;
Fig. 3 is a twin-beam ultraviolet spectrophotometer theory diagram;
Fig. 4 is the measuring principle block diagram of atomic fluorescence.
Embodiment
Referring to Fig. 1, the device of deduction light source drift described in the utility model and pulsation comprises light source 1, lens 3, light source detection device 10, atomizer 4, lens 6, sample detector 7 and amplification and data processor 8 successively.Described light source detection device 10 is connected with amplifier and data processor 8 by circuit 11.Described light source 1 can be hollow cathode modulation, electrodeless discharge lamp etc.
Referring to Fig. 2, the light 9 of described light source 1 both can directly shine on the light source detection device 10 from light source 1, also can lead on the light source detection device 10 by other means such as light transmitting fibers.
Its course of work is: incident ray 2 sends from light source 1, focuses on the atomizer 4 through lens 3.Sample is excited by incident ray 2 after atomizer 4 atomization and sends fluorescence 5, and fluorescence 5 carries out data processing by amplifier and data processor 8 after lens 6 focus on the sample detector 7 by opto-electronic conversion, come test sample; Synchronous with said process, light source 1 is emitting beam in 2, and light source detection device 10 is accepted the sub-fraction light 9 that sends synchronously from light source 1, through amplifying and data processor 8 processing synchronization monitoring and the drift and the fluctuation of deducting light 2.Can eliminate the drift of light source so effectively, can reflect the light source pulsation in the sample measurement process again in real time, can overcome the instability of light source in the atomic fluorescence spectrometer well.
Claims (2)
1, is used for the deduction light source drift of atomic fluorescence spectrometer and the device of pulsation, comprise light source (1), condenser lens (3), atomizer (4), condenser lens (6), sample detector (7), amplifier and data processor (8) and light source detection device (10), it is characterized in that described light source detection device (10) is connected with amplifier and data processor (8) by circuit.
2, according to claim 1, the sub-fraction light (9) that it is characterized in that described light source (1) is to shine directly into light source detection device (10) from light source (1) to go up or lead on the light source detection device (10) by light transmitting fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320100040 CN2646699Y (en) | 2003-10-08 | 2003-10-08 | Equipment for deducting shifting and pulsing of light source for atomic fluorescence spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320100040 CN2646699Y (en) | 2003-10-08 | 2003-10-08 | Equipment for deducting shifting and pulsing of light source for atomic fluorescence spectrometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2646699Y true CN2646699Y (en) | 2004-10-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320100040 Expired - Lifetime CN2646699Y (en) | 2003-10-08 | 2003-10-08 | Equipment for deducting shifting and pulsing of light source for atomic fluorescence spectrometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2646699Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539351A (en) * | 2010-12-24 | 2012-07-04 | 北京有色金属研究总院 | Measurement method of atomic absorption |
| CN104597011A (en) * | 2014-12-31 | 2015-05-06 | 北京博晖创新光电技术股份有限公司 | Excitation light source drift correction device and fluorescence spectrograph |
| CN105628662A (en) * | 2015-12-31 | 2016-06-01 | 北京博晖创新光电技术股份有限公司 | Atomic fluorescence spectrophotometer |
| 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 |
| CN106770392A (en) * | 2016-12-16 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | A kind of near side (ns) X-ray absorption spectrometer |
| CN107389547A (en) * | 2017-06-26 | 2017-11-24 | 北京海光仪器有限公司 | Intelligent environmental protection type light source drift corrects AFS automatically |
-
2003
- 2003-10-08 CN CN 200320100040 patent/CN2646699Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539351A (en) * | 2010-12-24 | 2012-07-04 | 北京有色金属研究总院 | Measurement method of atomic absorption |
| CN102539351B (en) * | 2010-12-24 | 2014-08-27 | 北京有色金属研究总院 | Measurement method of atomic absorption |
| CN104597011A (en) * | 2014-12-31 | 2015-05-06 | 北京博晖创新光电技术股份有限公司 | Excitation light source drift correction device and fluorescence spectrograph |
| CN104597011B (en) * | 2014-12-31 | 2017-12-26 | 北京博晖创新光电技术股份有限公司 | Excitation light source drift correction device and XRF |
| CN105628662A (en) * | 2015-12-31 | 2016-06-01 | 北京博晖创新光电技术股份有限公司 | Atomic fluorescence spectrophotometer |
| 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 |
| CN106770392A (en) * | 2016-12-16 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | A kind of near side (ns) X-ray absorption spectrometer |
| CN106770392B (en) * | 2016-12-16 | 2020-04-10 | 中国科学院长春光学精密机械与物理研究所 | Near-edge X-ray absorption spectrometer |
| CN107389547A (en) * | 2017-06-26 | 2017-11-24 | 北京海光仪器有限公司 | Intelligent environmental protection type light source drift corrects AFS automatically |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131008 Granted publication date: 20041006 |