CN203037565U - Element lamp with background correction light source - Google Patents
Element lamp with background correction light source Download PDFInfo
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- CN203037565U CN203037565U CN 201320011683 CN201320011683U CN203037565U CN 203037565 U CN203037565 U CN 203037565U CN 201320011683 CN201320011683 CN 201320011683 CN 201320011683 U CN201320011683 U CN 201320011683U CN 203037565 U CN203037565 U CN 203037565U
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Abstract
The utility model provides an element lamp with a background correction light source. The element lamp with the background correction light source provided by the utility model comprises an element lamp and further comprises an LED (Light-Emitting Diode) or LD (Laser Disc) light source, wherein the LED or LD light source is arranged inside the element lamp. The element lamp provided by the utility model and the LED or LD light source arranged inside the element lamp form a light source mode; the LED or LD light source arranged inside the element lamp is close to a light-emitting cathode in position; emitted light of the LED or LD light source and the light-emitting cathode are similarly consistent in a transmission process of an optical system; a light beam of the element lamp is used as a sample light beam; an LED or LD light beam is used as a reference light beam; the sample light beam and the reference light beam alternatively pass through the optical system of an atomic absorption spectrophotometer, so as to complete two-time measurement of background correction; the primary measurement refers to element lamp sample light measurement, so as to measure and analyze element atomic absorption signals and background absorption signals; the secondary measurement refers to LED or LD reference light measurement, so as to measure and analyze (a part of) the element atomic absorption signals and the background absorption signals; and pure atomic absorption signals after removing background absorption can be obtained by subtracting the absorbancies of the element atomic absorption signals and the background absorption signals.
Description
Technical field
The utility model relates to a kind of element lamp that has the background correction light source, belongs to the element lamp technical field.
Background technology
Element lamp is the main light source that current atom absorption spectrum commercial apparatus uses, and belongs to the glow-discharge gas light source, mainly uses the atomic features spectral line of negative electrode inner-wall material atomic excitation emission.
The background correction device is an important component part of Atomic Absorption Spectrometer device, and its technical parameter directly influences the performance index of instrument.In atomic absorption analysis is measured, background absorption can be regarded as the analytical element atom that records and absorbs all absorption signals in addition (comprising the signal that various molecule absorption, light scattering, coexistence elements spectra overlapping and the absorption of coexistence elements atom etc. produce), be one of major reason that causes the spectrum interference, directly affect measurement result.
In atomic absorption spectroscopy, background correction is finished by twice measurement.For the first time adopt sample light, at the analytical wavelengths place, Measurement and analysis element atom absorption signal and background absorption signal; For the second time adopt reference light, at the analytical wavelengths place, or close position is measured background absorption signal (except individual cases, can only not measure the background absorption signal in the real work, comprise background absorption signal and part of atoms absorption signal herein).Both subtract each other at absorbance, are to have deducted the clean atom absorption signal after the background absorption.
Background correction device commonly used at present is mainly following three kinds: deuterium lamp background correction device, Zeeman effect background correction device, self-absorption background correction device.Deuterium lamp background correction device is to make element lamp and deuterium lamp emission combiner enter monochromator by atomizer and detected by detector by optical combiner, and element light is as sample light, Measurement and analysis element atom absorption signal and background absorption signal; Deuterium lamp light is as reference light, Measurement and analysis element atom absorption signal (part) and background absorption signal.The deuterium lamp method is to use the longest and the widest correcting background method of range of application of time, also is a kind of background correction method of development comparative maturity.Shortcoming is that its background correction available spectrum is mainly in the ultraviolet spectrum district, because deuterium lamp exists〉350nm district luminous energy is low, causes background correction to be difficult to carry out.Matching graceful background correction device is that utilization atomic energy level generation division in magnetic field causes spectral line to divide, and then measures the method for atom absorption and background absorption.Sai Manfa can realize the background correction in the long scope of all-wave, and shortcoming is technical sophistication, cost costliness.Self-absorption background correction device is to utilize hollow cathode lamp is carried out the method that strong and weak pulse power supply carries out background correction.When weak pulse dashes power supply, record atom absorption signal and background absorption signal, the self-priming effect takes place when high power pulse is powered record atom absorption signal (part) and background absorption signal.Its advantage is only just can carry out background correction in all band with element lamp, and shortcoming is that different element generation self absorption effects or self-reversal effect differ greatly, i.e. the sensitivity for analysis of different elements loss is different, and the electric current of high power pulse simultaneously also can shorten the life-span of element lamp.
The utility model content
The purpose of this utility model is in order to solve the problem that above-mentioned prior art exists, i.e. its background correction available spectrum of deuterium lamp background correction device is mainly in the ultraviolet spectrum district, because deuterium lamp exists〉350nm district luminous energy is low, causes background correction to be difficult to carry out; Zeeman effect background correction device technique complexity, cost costliness; Self-absorption background correction device shortcoming is that different element generation self absorption effects or self-reversal effect differ greatly, i.e. the sensitivity for analysis of different elements loss is different, and the electric current of high power pulse simultaneously also can shorten the life-span of element lamp.And then provide a kind of element lamp that has the background correction light source.
The purpose of this utility model is achieved through the following technical solutions:
A kind of element lamp that has the background correction light source comprises: element lamp, also comprise LED or LD light source, and described LED or LD light source are arranged in the element lamp.
The utlity model has following advantage: the utility model element lamp forms a light source mode with the LED that is placed in one or LD.Be built in LED in the element lamp or LD light source and luminous negative electrode position and approach, it is approximate consistent in the optical system transmission that both launch light.The element lamp light beam is as sample beam, LED or LD light beam are as reference beam, replace the optical system (this process mainly adopts the mode of light source electrical modulation to realize) by atomic absorption spectrophotometer (AAS), finish twice measurement of background correction: be element lamp sample photo measure, Measurement and analysis element atom absorption signal and background absorption signal for the first time; Be LED or LD reference photo measure for the second time, Measurement and analysis element atom absorption signal (part) and background absorption signal, both subtract each other at absorbance, are to have deducted the clean atom absorption signal after the background absorption.LED or LD by changing different output wavelengths can realize full wave background correction.
The technical scheme that the utility model adopts can make atomic absorption spectrophotometer (AAS) carry out effective background correction in the long scope of all-wave, and this technology simply is easy to realize, is conducive to reduce cost, and improves the performance index of instrument.
Description of drawings
Fig. 1 is the structural representation that has the element lamp of background correction light source of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail: present embodiment has provided detailed embodiment being to implement under the prerequisite with technical solutions of the utility model, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 1, a kind of element lamp that has the background correction light source that present embodiment is related comprises: element lamp 1, also comprise LED or LD light source 2, and described LED or LD light source 2 are arranged in the element lamp 1.
The above; it only is the preferable embodiment of the utility model; these embodiments all are based on the different implementations under the utility model general idea; and protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (1)
1. element lamp that has the background correction light source, comprising: element lamp (1) is characterized in that also comprise LED or LD light source (2), described LED or LD light source (2) are arranged in the element lamp (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011683 CN203037565U (en) | 2013-01-10 | 2013-01-10 | Element lamp with background correction light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011683 CN203037565U (en) | 2013-01-10 | 2013-01-10 | Element lamp with background correction light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203037565U true CN203037565U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320011683 Expired - Lifetime CN203037565U (en) | 2013-01-10 | 2013-01-10 | Element lamp with background correction light source |
Country Status (1)
| Country | Link |
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| CN (1) | CN203037565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842221A (en) * | 2016-05-31 | 2016-08-10 | 北京金索坤技术开发有限公司 | Atomic fluorescence spectrometer and background subtraction method thereof |
-
2013
- 2013-01-10 CN CN 201320011683 patent/CN203037565U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842221A (en) * | 2016-05-31 | 2016-08-10 | 北京金索坤技术开发有限公司 | Atomic fluorescence spectrometer and background subtraction method thereof |
| CN105842221B (en) * | 2016-05-31 | 2018-10-12 | 北京金索坤技术开发有限公司 | Atomic Fluorescence Spectrometer background deduction method and Atomic Fluorescence Spectrometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201106 Address after: 012200 Wang Guan Liang sorunga Road, Chahar Right Wing Front Banner, Ulanqab City, Inner Mongolia Autonomous Region Patentee after: Inner Mongolia General Instrument Co.,Ltd. Address before: 101200 No. 3, Ping three road, Pinggu District, Beijing Patentee before: BEIJING PURKINJE GENERAL INSTRUMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
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| CX01 | Expiry of patent term |