CN201075088Y - Multicenter atomic fluorescence optical spectrometer - Google Patents
Multicenter atomic fluorescence optical spectrometer Download PDFInfo
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- CN201075088Y CN201075088Y CNU2007201732549U CN200720173254U CN201075088Y CN 201075088 Y CN201075088 Y CN 201075088Y CN U2007201732549 U CNU2007201732549 U CN U2007201732549U CN 200720173254 U CN200720173254 U CN 200720173254U CN 201075088 Y CN201075088 Y CN 201075088Y
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- atomic fluorescence
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Abstract
The utility model relates to an atomic fluorescence spectrometer used in analytical chemistry field, in particular to a multi-element testing atomic fluorescence spectrometer which can test the contents of a plurality of elements of the analysis samples at the same time. A multi-passage atomic fluorescence spectrometer comprises an excitation source, an atomizer and a detector. The spectrometer comprises a multi-passage structure with multi-detection optical path units, namely, the spectrometer is internally provided with a plurality of detection optical paths corresponding to the excitation source and used for testing a plurality of elements of the same sample at the same time. The utility model can test a plurality of elements of the same sample at the same time; furthermore, when great difference exists on testing multi-element detecting fluorescence signals of mutually independent optical path system through which the channel interference is the most serious, the utility model implements testing samples with low consistency at the same time, improves the exactness and precision when the samples with low consistency are tested, and satisfies different gain requirements when a plurality of elements are detected.
Description
Technical field
The utility model relates to the atomic fluorescence spectrometer of using in a kind of analytical chemistry field, particularly the same atomic fluorescence spectrometer of surveying of multielement that the content of contained a plurality of elements in the analytic sample is measured simultaneously belongs to light, mechanical, electrical integrated analysis instrument.
Background technology
At present, in the prior art, the spectral class analytical instrument is widely used in the quantitative measurement of element.The spectral class analytical instrument is made up of excitation source, atomizer and three major parts of detecting device.Atomic fluorescence spectrometer is wherein a kind of spectral class analytical instrument commonly used.The basic functional principle of its whole test process is: each element in the specimen forms corresponding hydride after reacting, mix with hydrogen and carrier gas, after entering atomizer realization atomization, send specific wavelength atomic fluorescence signal under the irradiation of excitation source, detecting device is collected this fluorescence signal and is obtained the concentration data of element according to the characteristic that this fluorescence signal intensity is directly proportional with concentration of element.
According to the number of atomic fluorescence spectrometer passage, atomic fluorescence spectrometer can be divided into single channel atomic fluorescence spectrometer and hyperchannel atomic fluorescence spectrometer.The hyperchannel atomic fluorescence is being shelled a plurality of elements in the same sample regularly. measure work when can finish a plurality of elements, having realized both can carrying out single element measures, the advantage that can measure simultaneously a plurality of tested elements in the sample is widely used in fields such as environmental protection, health, food, medicine, metallurgy, geologic prospecting again.
Because various elements are different to the sensitivity requirement of instrument, an instrument is difficult to finish simultaneously such work.The method that present head it off generally adopts has two kinds.First method is to change the lamp source strength, and second method is the enlargement factor that changes amplifier.Change the method for lamp source strength, can adjust the gain margin of instrument, but the lamp source strength regulate by the lamp supply current, the adjustable extent of electric current is very narrow, exceeds this scope, the instrument electrical noise increases, the bad stability in lamp source, reduces measuring accuracy.Change the enlargement factor of amplifier, even if classification is amplified, the enlargement factor of whole amplifier is also just between 1-2 the order of magnitude, so the adjustable range of enlargement factor is still very little, can not satisfy the demand of hyperchannel sample detection.In addition, enlargement factor constantly changes, and makes detecting instrument lose the most basic function of standard and repeatability.
Summary of the invention
The technical problems to be solved in the utility model is for overcoming the deficiency described in the background technology, provide a kind of when a plurality of tested elements are measured simultaneously in to sample, overcome the shortcoming of existing spectral class analytical technology accuracy and precision difference can not be to the small concentration sample of test simultaneously or test small concentration sample the time, satisfy the multi-pass hyperchannel atomic fluorescence spectrometer that the different gain that detects for a plurality of elements requires.
In order to realize goal of the invention, the technical solution of the utility model is:
A kind of hyperchannel atomic fluorescence spectrometer comprises excitation source 3, atomizer 1 and detecting device; Described spectrometer includes the multi-channel structures that detect optical path unit more, promptly adopts and excitation source 3 corresponding a plurality of detection light paths in described spectrometer, is used for the contained a plurality of elements of same sample are measured simultaneously.
In concrete structure, described spectrometer comprises an excitation source 3, an atomizer 1 and a multi-channel structure, described multi-channel structure detects light path by a plurality of single channels to be formed, and described single channel detection light path includes photodetector 4 and its corresponding lens 2; Described excitation source 3 is arranged on the center of multi-channel structure, and corresponding with described atomizer 1.
In order to realize concrete goal of the invention, described multi-channel structure comprises that 2-8 group single channel detects light path, and each single channel detect light path focus all concentrate on the same point of atomizer 1; Described each single channel detects light path and is fixed in the described spectrometer by support, and each single channel detect light path arrangement on the same surface level or three-dimensional the layout be centered around around the described atomizer 1.
For final signal is exported, described spectrometer also comprises an electronic switch 5, described fluorescence signal is detected by the photodetector 4 that corresponding single channel detects in the light path respectively, and handle electric signal with different gain circuitries respectively, from the described one group of pairing electric signal of fluorescence intensity of photoelectric detector 4 outputs of respectively organizing, this group is mixed electric signal by electronic switch 5, is separated into the signal of the different elements of representative, varying strength under the control of restituted signal.
Described excitation source 3 is a hollow cathode lamp, and photodetector 4 is a photomultiplier; Described multi-channel structure comprises that preferably 2 groups of single channels detect light path.
Because employing of the present utility model detects the multi-channel structure of optical path unit more, outside decapacitation is measured simultaneously to a plurality of elements that closed in the same sample, when separate light path system detects fluorescence signal than big-difference to disturbing the most serious same survey multielement between the road, realize the small concentration sample of test simultaneously, accuracy and precision satisfy the different gain requirement that detects for a plurality of elements when improving test small concentration sample.
Description of drawings
Figure is that locations of structures of the present utility model concerns synoptic diagram
Technology contents concrete in the accompanying drawing is illustrated in conjunction with embodiment.
Embodiment:
A kind of hyperchannel atomic fluorescence spectrometer comprises excitation source 3, atomizer 1 and detecting device 4; Described spectrometer includes the multi-channel structures that detect optical path unit more, promptly adopts and excitation source 3 corresponding a plurality of detection light paths in described spectrometer, is used for the contained a plurality of elements of same sample are measured simultaneously.
It is channel structure that described spectrometer comprises an excitation source 3, an atomizer 1 and two channel architectures, described channel structure detects light path by two single channels to be formed, and described single channel detection light path includes photodetector 4 and its corresponding lens 2; Described excitation source 3 is arranged on the center of channel structure, and corresponding with described atomizer 1.The focus that each single channel detects light path all concentrates on the same point of atomizer 1; Described each single channel detects light path and is fixed in the described spectrometer by support, and each single channel detects light path arrangement on same surface level.
For final signal is exported, described spectrometer also comprises an electronic switch 5, described fluorescence signal is detected by the photodetector 4 that corresponding single channel detects in the light path respectively, and handle electric signal with different gain circuitries respectively, from the described one group of pairing electric signal of fluorescence intensity of photoelectric detector 4 outputs of respectively organizing, this group is mixed electric signal by electronic switch 5, is separated into the signal of the different elements of representative, varying strength under the control of restituted signal.
Adopt two groups in the present embodiment as shown in the figure and detect optical path unit, the light detection path unit (being double light path) that constitutes by photodetector 4 and its corresponding lens 2 respectively, these two groups of optical path units are with fan-shaped distribution, and be fixed in the instrument by support, the focus that each group detects optical path unit all concentrates on the same point of atomizer 1, described excitation source 3 is a hollow cathode lamp, photodetector is a photomultiplier, but each group detect optical path unit in instrument both floor plan can three-dimensionally arrange that also but all focuses that detect optical path units all should concentrate on the same point of atomizer 1.
Under the control of excitation source 3 at light source control signal, illuminator is excited, the atomic vapour that produced in the atomizer 1 this moment can send a characteristic fluorescence signal under the radiation of this feature light source. owing in atomic vapour, have a plurality of elemental compositions, and each element is only to radiosensitive with own corresponding characteristic wavelength. the characteristic wavelength that each excitation source 3 is sent in this instrument is all different, can in atomizer 1, excite the fluorescence signal of the varying strength that produces different elements, this sequence fluorescence signal is detected by the light detection path (photomultiplier tube) 4 of respective channel respectively, and handle electric signal with different gain circuitries respectively, from each group photoelectric detector 4 output is that this group of one group of pairing electric signal of fluorescence intensity is mixed electric signal by electronic switch 5, under the control of restituted signal, be separated into the different elements of representative, the signal of varying strength, and level signal processing circuit is separately handled the separation that is effective again after being admitted to.Finally, the signal of being imported is gathered, changed and data processing, can obtain coexisting as the analysis result of a plurality of elements in the same sample at the same time by signal processing system.
Claims (5)
1. a hyperchannel atomic fluorescence spectrometer comprises excitation source (3), atomizer (1) and detecting device; It is characterized in that: described spectrometer includes the multi-channel structures that detect optical path unit more, promptly adopts and the corresponding a plurality of detection light paths of excitation source (3) in described spectrometer, is used for the contained a plurality of elements of same sample are measured simultaneously.
2. according to the described a kind of hyperchannel atomic fluorescence spectrometer of claim 1, it is characterized in that:
Described spectrometer comprises an excitation source (3), an atomizer (1) and multi-channel structure, described multi-channel structure detects light path by a plurality of single channels to be formed, and described single channel detection light path includes photodetector (4) and its corresponding lens (2); Described excitation source (3) is arranged on the center of multi-channel structure, and corresponding with described atomizer (1).
3. according to claim 1 or 2 described a kind of hyperchannel atomic fluorescence spectrometer, it is characterized in that:
Described multi-channel structure comprises that 2-8 group single channel detects light path, and the focus of each single channel detection light path all concentrates on the same point of atomizer (1); Described each single channel detects light path and is fixed in the described spectrometer by support, and each single channel detect light path arrangement on same surface level or three-dimensional the layout be centered around described atomizer (1) all around.
4. according to claim 1 or 2 described a kind of hyperchannel atomic fluorescence spectrometer, it is characterized in that:
Described spectrometer also comprises an electronic switch (5), described fluorescence signal is detected by the photodetector (4) that corresponding single channel detects in the light path respectively, and handle electric signal with different gain circuitries respectively, from the described one group of pairing electric signal of fluorescence intensity of photoelectric detector (4) output of respectively organizing, this group is mixed electric signal by electronic switch (5), is separated into the signal of the different elements of representative, varying strength under the control of restituted signal.
5. according to claim 1 or 2 described a kind of hyperchannel atomic fluorescence spectrometer, it is characterized in that:
Described excitation source (3) is a hollow cathode lamp, and photodetector (4) is a photomultiplier; Described multi-channel structure comprises that preferably 2 groups of single channels detect light path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201732549U CN201075088Y (en) | 2007-09-20 | 2007-09-20 | Multicenter atomic fluorescence optical spectrometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007201732549U CN201075088Y (en) | 2007-09-20 | 2007-09-20 | Multicenter atomic fluorescence optical spectrometer |
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| CN201075088Y true CN201075088Y (en) | 2008-06-18 |
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| CNU2007201732549U Expired - Lifetime CN201075088Y (en) | 2007-09-20 | 2007-09-20 | Multicenter atomic fluorescence optical spectrometer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507518A (en) * | 2011-10-25 | 2012-06-20 | 天津港东科技发展股份有限公司 | 12-lamp multi-channel atomic fluorescence spectrometer |
| CN105866090A (en) * | 2016-06-03 | 2016-08-17 | 苏州百源基因技术有限公司 | Ultraviolet visible light fluorescence detection system |
| CN106053362A (en) * | 2016-05-23 | 2016-10-26 | 北京赛科希德科技股份有限公司 | Absorbance detection system and method |
| 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 |
| CN110308127A (en) * | 2019-08-15 | 2019-10-08 | 四川朴澜医疗科技有限公司 | Can more fluorescence signals simultaneously detect optical assay device |
-
2007
- 2007-09-20 CN CNU2007201732549U patent/CN201075088Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507518A (en) * | 2011-10-25 | 2012-06-20 | 天津港东科技发展股份有限公司 | 12-lamp multi-channel atomic fluorescence spectrometer |
| CN102507518B (en) * | 2011-10-25 | 2013-05-08 | 天津港东科技发展股份有限公司 | 12-lamp multi-channel atomic fluorescence spectrometer |
| CN106053362A (en) * | 2016-05-23 | 2016-10-26 | 北京赛科希德科技股份有限公司 | Absorbance detection system and method |
| CN105866090A (en) * | 2016-06-03 | 2016-08-17 | 苏州百源基因技术有限公司 | Ultraviolet visible light fluorescence detection system |
| 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 |
| CN110308127A (en) * | 2019-08-15 | 2019-10-08 | 四川朴澜医疗科技有限公司 | Can more fluorescence signals simultaneously detect optical assay device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING RUIGUANG INSTRUMENT CO., LTD. Free format text: FORMER NAME: BEIJING LWL INSTRUMENT CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 100015, M5 building, 5 floors, workshop of Seven Star Huadian Industrial Park, No. 1, Jiuxianqiao East Road, Beijing, Chaoyang District Patentee after: Beijing Ruiguang Instrument Co., Ltd. Address before: 100016, M5 building, No. 1 East Jiuxianqiao Road, Beijing, Chaoyang District Patentee before: Beijing LWL Instrument Co., Ltd. |
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| ASS | Succession or assignment of patent right |
Owner name: BEIJING BOHUI INNOVATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING RUIGUANG INSTRUMENT CO., LTD. Effective date: 20141021 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100015 CHAOYANG, BEIJING TO: 102206 CHANGPING, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141021 Address after: 102206 No. 9 middle road, Changping District life science and Technology Park, Beijing Patentee after: Beijing Bohui Innovation Technology Co., Ltd. Address before: 100015, M5 building, 5 floors, workshop of Seven Star Huadian Industrial Park, No. 1, Jiuxianqiao East Road, Beijing, Chaoyang District Patentee before: Beijing Ruiguang Instrument Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20080618 |
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| CX01 | Expiry of patent term |