CN205808934U - Atomic fluorescence spectrophotometer - Google Patents
Atomic fluorescence spectrophotometer Download PDFInfo
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- CN205808934U CN205808934U CN201620683974.9U CN201620683974U CN205808934U CN 205808934 U CN205808934 U CN 205808934U CN 201620683974 U CN201620683974 U CN 201620683974U CN 205808934 U CN205808934 U CN 205808934U
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- light
- emergent light
- fluorescence spectrophotometer
- atomic fluorescence
- flame
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Abstract
This utility model provides a kind of atomic fluorescence spectrophotometer, and described atomic fluorescence spectrophotometer includes light path system, atomizer and analysis system；Described light path system includes: M excitation source, M >=2, and M ∈ Z, and the characteristic spectral line of the emergent light of described M light source corresponds respectively to element to be measured；Closing bundle module, described conjunction bundle module is combined for M is restrainted emergent light, and is transferred in the flame of described atomizer；Detector, the fluorescence that the angle being transferred between the emergent light in flame is acute angle or right angle is converted to the signal of telecommunication, and is sent to described analysis system by described detector.This utility model has that detection elements is many, simple in construction, low cost and other advantages.
Description
Technical field
This utility model relates to fluorescence spectrum, particularly to atomic fluorescence spectrophotometer.
Background technology
The operation principle of atomic fluorescence spectrophotometer is: utilize potassium borohydride or sodium borohydride as reducing agent, sample is molten
Element reduction to be analyzed in liquid is volatility covalency gaseous hydride (or atom vapor), is then conducted into former by carrier gas
Sonization device, forms ground state atom at Ar-H flame Atom.The excitation source (generally hollow cathode modulation) of element to be measured
Flame is irradiated in the characteristic spectral line line focus launched, and excites the atom of element the most to be measured to produce fluorescence.Photomultiplier tube receives glimmering
Light is also converted to the signal of telecommunication, and integrated amplification etc. processes, data handling system obtain being directly proportional to concentration of element in sample survey
Amount result.
When in sample solution containing two kinds or during above element to be measured, atomic fluorescence spectrophotometer uses multi-channel measurement mould
Formula, uses the excitation source high frequency time-division illumination flame identical with number of active lanes (i.e. the number of element to be measured in sample solution),
And make photomultiplier tube read each channel signal value respectively by frequency corresponding with light source.Manifold Light Way is generally in the form of at water
The mode using light path to rotate tiling in plane realizes, the exciting light of multiple passages press certain angle (as 45 degree, 45 degree,
90 degree,--90 degree, 135 degree ,-135 degree) incident flame, then at 0 degree position reception fluorescence, the exciting light of all passages and
The fluorescence that terminating is received is all on the cross section of flame kernel.Tile mode has a following shortcoming:
1. relevant with fluorescence reception angle due to the intensity of fluorescence, the inconsistent of several channel reception angles causes each passage
Concordance is poor, and the channel fluorescence efficiency of deviation 90 degree reception fluorescence drastically reduces；
2. due to more than 90 degree receive fluorescence time (as+135 degree and-135 degree), fluorescence can by the severe jamming of transmission light,
Therefore for ensureing that veiling glare is less, in general employing 90 degree, fluorescence is received；Owing to space limits, the number of channels can placed in 90 degree
It is usually no more than 4；
3. relatively big due to hollow cathode lamp drift, particularly mercury lamp, the drift of signal greatly have impact on stablizing of instrument
Property and detection limit；
4. the lamp of multichannel fluorophotometer is that tiling is scattered mode, needs to change lamp from upward-acting door, changes trouble.
Utility model content
In order to solve the deficiency in above-mentioned prior art, this utility model provides a kind of detection efficiency height, runs
The atomic fluorescence spectrophotometer stable, interchannel interference is few.
The purpose of this utility model is achieved through the following technical solutions:
A kind of atomic fluorescence spectrophotometer, described atomic fluorescence spectrophotometer includes light path system, atomizer and analysis system；
Described light path system includes:
M excitation source, M >=2, and M ∈ Z, the characteristic spectral line of the emergent light of described M light source corresponds respectively to unit to be measured
Element；
Closing bundle module, described conjunction bundle module is combined for M is restrainted emergent light, and is transferred to the fire of described atomizer
In flame；
Detector, the fluorescence that the angle being transferred between the emergent light in flame is acute angle or right angle is turned by described detector
It is changed to the signal of telecommunication, and is sent to described analysis system.
According to above-mentioned atomic fluorescence spectrophotometer, it is preferable that described conjunction bundle module includes:
M group transmission medium, the emergent light of each excitation source is coupled into the input of each group of transmission medium, described M
The outfan of group transmission medium is closed bundle, and the output illumination closing the transmission medium after bundle is mapped in described flame.
According to above-mentioned atomic fluorescence spectrophotometer, it is preferable that the input of each group of transmission medium is arranged as circle, close bundle
After the width of shape that is arranged in of the outfan of transmission medium less than the diameter of flame.
According to above-mentioned atomic fluorescence spectrophotometer, it is preferable that close the transmission medium after bundle and separate reference light output end；Described
The spread geometry of the transmission medium of reference light output end mates with the receiving plane of described detector.
According to above-mentioned atomic fluorescence spectrophotometer, it is preferable that the normal of the receiving plane of described detector be transferred to flame
In emergent light between angle be acute angle or right angle.
According to above-mentioned atomic fluorescence spectrophotometer, it is preferable that described conjunction bundle module includes:
(M-1) individual transflection mirror, is at least partly successively set on i-th excitation source in described (M-1) individual transflection mirror
Emergent light light path on；
(M-1) individual reflecting mirror, described reflecting mirror, for the emergent light of other excitation source is reflexed to transflection mirror, is in
Reflection light direction on transflection mirror in the emergent light light path of i-th excitation source and the emergent light of described i-th excitation source
Direction is identical.
According to above-mentioned atomic fluorescence spectrophotometer, it is preferable that the emergent light of at least two excitation sources by reflecting mirror, thoroughly
Anti-mirror is first restrainted by conjunction, then is reflected by a reflector on the transflection mirror in the emergent light light path being in i-th excitation source.
According to above-mentioned atomic fluorescence spectrophotometer, alternatively, described bundle module of closing farther includes:
The transflection mirror separately set, this transflection mirror is arranged in the emergent light light path after closing bundle.
According to above-mentioned atomic fluorescence spectrophotometer, alternatively, described light path system farther includes:
Handover module, described handover module is for being selectively transmitted to described emergent light in described flame.
This utility model additionally provides the method for work applying above-mentioned atomic fluorescence spectrophotometer.This utility model purpose is logical
Cross what techniques below scheme realized:
According to the method for work of above-mentioned atomic fluorescence spectrophotometer, described method of work comprises the following steps:
(A1) emergent light that excitation source sends is irradiated in flame；
(A2) element to be measured forms ground state atom in flame, and ground state atom absorbs described emergent light and is excited, and discharges
Go out fluorescence；
(A3) detector receives described fluorescence, knows the content of element to be measured in sample after analyzing.
Compared with prior art, this utility model has the beneficial effect that
The fluorescence reception direction of the most all passages is right angle (or acute angle) with the angle of the exciting light inciding flame, the party
The strongest to fluorescence, the veiling glare impact of the transmission light of stimulated luminescence is minimum；
2. can realize 4 or above passage is tested simultaneously, meet the demand of client's high efficiency test；
The most all passages are all parallel passages, can guarantee that passage consistency is good, and the interference between passage is little；
The most each passage has reference signal collection for deducting drift, and stability of instrument and detection limit are greatly improved, with
Time be also greatly shortened the preheating time required for instrument；
The excitation source of the most all passages is respectively mounted all on the panel of instrument, and structure design is simple, and it is convenient to change.
Accompanying drawing explanation
Referring to the drawings, disclosure of the present utility model will be easier to understand.Skilled addressee readily understands that
It is: these accompanying drawings are used only for illustrating the technical solution of the utility model, and are not intended to protection of the present utility model
Scope is construed as limiting.In figure:
Fig. 1 is the structure diagram of the light path system according to this utility model embodiment 1；
Fig. 2 is the structure diagram of the light path system according to this utility model embodiment 2.
Detailed description of the invention
Fig. 1-2 and following description describe optional embodiment of the present utility model with teaching those skilled in the art how
Implement and reproduce this utility model.In order to instruct technical solutions of the utility model, simplify or eliminated some conventional aspects.This
Skilled person should be appreciated that be derived from these embodiments modification or replace will be in the range of this utility model.This area
Skilled artisans appreciated that following characteristics can combine to form multiple modification of the present utility model in every way.Thus, originally
Utility model is not limited to following optional embodiment, and is only limited by claim and their equivalent.
Embodiment 1:
The atomic fluorescence spectrophotometer of this utility model embodiment, described atomic fluorescence spectrophotometer includes:
Sampling system, atomizer, analysis system, these are all the state of the art, do not repeat them here；
Fig. 1 schematically illustrates the structure diagram of the light path system of this utility model embodiment, as it is shown in figure 1, described
Light path system includes:
M excitation source 1-4, such as hollow cathode lamp, M >=2, and M ∈ Z, the characteristic spectral line of the emergent light of described M light source
Correspond respectively to element to be measured；
Closing bundle module, described conjunction bundle module is combined for M is restrainted emergent light, and is transferred to the fire of described atomizer
In flame；Specifically include: M group transmission medium 9-12, such as fibre bundle, the emergent light of each excitation source by after lens 5-8 by coupling
Closing the input into each group of transmission medium, the outfan of described M group transmission medium is closed bundle 13, closes the transmission medium 14 after bundle
Output light by being irradiated in described flame after lens 15, close the transmission medium after bundle and also separate reference light output end 19；Often
The input of one group of transmission medium is arranged as circle, and the width of the shape that the outfan of the transmission medium after conjunction bundle is arranged in is less than
The diameter of flame 16；The spread geometry of the transmission medium of described reference light output end mates with the receiving plane of described detector；
Detector 22, such as photomultiplier tube, the folder that an only detector will be transferred between the emergent light in flame
Angle is that the fluorescence at acute angle or right angle is converted to the signal of telecommunication: the normal of the receiving plane of detector and being transferred between the emergent light in flame
Angle be acute angle or right angle, and be sent to described analysis system；
Reflecting mirror 21, this reflecting mirror is movably disposed on fluorescence light path, the reference of described reference light output end output
Light is reflected by described reflecting mirror after lens 20, and reflection light is received by described detector；
Handover module, whether described handover module for controlling the unlatching of LASER Light Source, so that the outgoing of LASER Light Source
Light is optionally injected in the flame of atomizer.
The method of work of the above-mentioned atomic fluorescence spectrophotometer of this utility model embodiment, described method of work includes following step
Rapid:
(A1) by switching, it is irradiated in flame to the emergent light timesharing that excitation source sends；
(A2) element to be measured forms ground state atom in flame, and ground state atom absorbs described emergent light and is excited, and discharges
Go out fluorescence；
(A3) moving into described reflecting mirror, reference light is reflected by a reflector, and is received by a detector afterwards, thus for reference pair
According to, to correct drift；
Removing described reflecting mirror, detector receives described fluorescence, knows the content of element to be measured in sample after analyzing.
Embodiment 2:
The atomic fluorescence spectrophotometer of this utility model embodiment and method of work thereof, as different from Example 1:
Include as in figure 2 it is shown, close bundle module:
(M-1) individual transflection mirror 31,38,39, is at least partly successively set on i-th in described (M-1) individual transflection mirror
In the emergent light light path of excitation source；
(M-1) individual reflecting mirror 35-37, described reflecting mirror is for reflexing to transflection mirror by the emergent light of other excitation source
On, reflection light direction and the described i-th excitation source being on the transflection mirror in the emergent light light path of i-th excitation source
Emergent light direction is identical；
The emergent light of at least two excitation sources is first restrainted by conjunction by reflecting mirror 35, transflection mirror 38, more anti-by reflecting mirror 36
It is mapped on the transflection mirror that is in the emergent light light path of i-th excitation source；
The transflection mirror 33 separately set, this transflection mirror is arranged in the emergent light light path after closing bundle, thus separates reference light；
Detector, such as photomultiplier tube, the normal of the receiving plane of described detector and being transferred between the emergent light in flame
Angle be right angle, the outfan of detector connects described analysis system；
The reflecting mirror separately set, this reflecting mirror is movably disposed on fluorescence light path, and described reference light is anti-by this reflecting mirror
Penetrating, reflection light is received by described detector；
Handover module, whether described handover module for controlling the unlatching of LASER Light Source, so that the outgoing of LASER Light Source
Light is optionally injected in the flame of atomizer.
Embodiment 3:
The atomic fluorescence spectrophotometer of this utility model embodiment, as different from Example 1:
Reflecting mirror replaces with transflection mirror, block body (or chopper), and described transflection mirror is fixed on described fluorescence light path, reference
Light incides on detector after being reflected by transflection mirror, and fluorescence is received by a detector through described transflection mirror；Block body sets movably
Put in reference light light path.
When block body is removed, detector gathers fluorescent and the reference light that flame kernel comes simultaneously；When block body is in the light
Time, only gather fluorescent, fluorescent and reference optical information can be obtained by software processes, by software processes reference
Light carries out detaining drift and processes fluorescent.
Embodiment 4:
The atomic fluorescence spectrophotometer of this utility model embodiment, as different from Example 1:
Using two detectors, one is used for receiving fluorescence, and another is for receiving the reference of reference light output end output
Light (without reflexing to the reflecting mirror of an only detector receiving fluorescence), the signal of telecommunication of output send analysis system.
Embodiment 5:
The atomic fluorescence spectrophotometer of this utility model embodiment, as different from Example 2:
Described (M-1) individual transflection mirror is arranged in the emergent light light path of i-th excitation source, other excitation source
The emergent light sent is reflected by a reflector on transflection mirror, thus realizes closing bundle.
The method of work of the above-mentioned atomic fluorescence spectrophotometer of this utility model embodiment, described method of work includes following step
Rapid:
(A1) emergent light that excitation source sends is irradiated in flame (without switching) simultaneously；
(A2) element to be measured forms ground state atom in flame, and ground state atom absorbs described emergent light and is excited, and discharges
Go out fluorescence；
(A3) moving into described reflecting mirror, reference light is reflected by a reflector, and is received by a detector afterwards, thus for reference pair
According to, to correct drift；
Removing described reflecting mirror, detector receives described fluorescence, knows the content of element to be measured in sample after analyzing.
Embodiment 6:
The atomic fluorescence spectrophotometer of this utility model embodiment and method of work thereof, as different from Example 1:
Whether handover module no longer controls the unlatching of excitation source, but arranges in light light path in going out of each excitation source
Removable block body, when needing the emergent light of this excitation source, reference light, what block body was placed in other excitation source goes out light light path
On to be in the light so that the emergent light of excitation source is optionally irradiated in flame.
Claims (9)
1. an atomic fluorescence spectrophotometer, described atomic fluorescence spectrophotometer includes light path system, atomizer and analysis system；Its
It is characterised by: described light path system includes:
M excitation source, M >=2, and M ∈ Z, the characteristic spectral line of the emergent light of described M light source corresponds respectively to element to be measured；
Closing bundle module, described conjunction bundle module is combined for M is restrainted emergent light, and is transferred to the flame of described atomizer
In；
Detector, the fluorescence that the angle being transferred between the emergent light in flame is acute angle or right angle is converted to by described detector
The signal of telecommunication, and it is sent to described analysis system.
Atomic fluorescence spectrophotometer the most according to claim 1, it is characterised in that: described bundle module of closing includes:
M group transmission medium, the emergent light of each excitation source is coupled into the input of each group of transmission medium, and described M group passes
The outfan of defeated medium is closed bundle, and the output illumination closing the transmission medium after bundle is mapped in described flame.
Atomic fluorescence spectrophotometer the most according to claim 2, it is characterised in that: the input arrangement of each group of transmission medium
For circle, the width of the shape that the outfan of the transmission medium after conjunction bundle is arranged in is less than the diameter of flame.
Atomic fluorescence spectrophotometer the most according to claim 2, it is characterised in that: close the transmission medium after bundle and separate reference light
Outfan；The spread geometry of the transmission medium of described reference light output end mates with the receiving plane of described detector.
Atomic fluorescence spectrophotometer the most according to claim 1, it is characterised in that: the normal of the receiving plane of described detector with
Being transferred to the angle between the emergent light in flame is acute angle or right angle.
Atomic fluorescence spectrophotometer the most according to claim 1, it is characterised in that: described bundle module of closing includes:
(M-1) individual transflection mirror, is at least partly successively set on going out of i-th excitation source in described (M-1) individual transflection mirror
Penetrate in light light path；
(M-1) individual reflecting mirror, described reflecting mirror, for the emergent light of other excitation source is reflexed to transflection mirror, is in i-th
Reflection light direction on transflection mirror in the emergent light light path of individual excitation source and the emergent light direction of described i-th excitation source
Identical.
Atomic fluorescence spectrophotometer the most according to claim 6, it is characterised in that: the emergent light of at least two excitation sources leads to
Cross reflecting mirror, transflection mirror is first restrainted by conjunction, then is reflected by a reflector the transflection in the emergent light light path being in i-th excitation source
On mirror.
Atomic fluorescence spectrophotometer the most according to claim 6, it is characterised in that: described bundle module of closing farther includes:
The transflection mirror separately set, this transflection mirror is arranged in the emergent light light path after closing bundle.
Atomic fluorescence spectrophotometer the most according to claim 1, it is characterised in that: described light path system farther includes:
Handover module, described handover module is for being selectively transmitted to described emergent light in described flame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620683974.9U CN205808934U (en) | 2016-06-30 | 2016-06-30 | Atomic fluorescence spectrophotometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620683974.9U CN205808934U (en) | 2016-06-30 | 2016-06-30 | Atomic fluorescence spectrophotometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153590A (en) * | 2016-06-30 | 2016-11-23 | 北京吉天仪器有限公司 | Atomic fluorescence spectrophotometer and method of work thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153590A (en) * | 2016-06-30 | 2016-11-23 | 北京吉天仪器有限公司 | Atomic fluorescence spectrophotometer and method of work thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20180511 Decision number of declaring invalidation: 35834 Granted publication date: 20161214 |