CN109524290A - Ion mobility spectrometer apparatus based on impulse sampling - Google Patents
Ion mobility spectrometer apparatus based on impulse sampling Download PDFInfo
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- CN109524290A CN109524290A CN201811654155.1A CN201811654155A CN109524290A CN 109524290 A CN109524290 A CN 109524290A CN 201811654155 A CN201811654155 A CN 201811654155A CN 109524290 A CN109524290 A CN 109524290A
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- 238000012546 transfer Methods 0.000 claims description 10
- 238000001871 ion mobility spectroscopy Methods 0.000 claims description 6
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- 238000004064 recycling Methods 0.000 claims description 4
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0422—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components for gaseous samples
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Abstract
Embodiment of the disclosure provides a kind of ion mobility spectrometer apparatus based on impulse sampling.Ion mobility spectrometer apparatus includes: ionic migration spectrometer, is configured to test sample；Sampling apparatus, configuration is to acquire sample and export packet mixed gas with sample；And circulation gas circuit, it is configured to for sampling apparatus and the ionic migration spectrometer being in fluid communication, so that the packet for exporting sampling apparatus mixed gas with sample is directed into the ionic migration spectrometer, and the gas that ionic migration spectrometer is discharged can at least partly be returned to the ionic migration spectrometer and/or the sampling apparatus.
Description
Technical field
Embodiment of the disclosure is related to Ion transfer field, in particular to the ionic migration spectrometer dress based on impulse sampling
It sets.
Background technique
Ionic migration spectrometer (Ion mobility spectrometry, IMS) has portable, quick, sensitive and can industry
The advantages that change, is widely used in the fields such as military affairs, national defence, industry, environment and clinical diagnosis.But due to other in detection environment
The interference of complex matrices such as steam etc. greatly limits its qualitative ability of identification and quantitation capabilities.
Summary of the invention
According to the one side of the disclosure, embodiment of the disclosure provides a kind of ionic migration spectrometer dress based on impulse sampling
It sets, comprising:
Ionic migration spectrometer is configured to test sample；
Sampling apparatus, configuration is to acquire sample and export packet mixed gas with sample；And
Gas circuit is recycled, is configured to for the sampling apparatus and the ionic migration spectrometer being in fluid communication, to adopt described
The packet mixed gas with sample of sampling device output is directed into the ionic migration spectrometer, and can be by the ion mobility spectrometry
The gas of instrument discharge at least partly returns to the ionic migration spectrometer and/or the sampling apparatus.
In one embodiment, the circulation gas circuit is arranged so that the ion mobility spectrometer apparatus is allowed to adopt
Switch between recurrent state in sample and sample introduction state and first gas,
Wherein under the sampling and sample introduction state, the sampling apparatus acquires sample and passes through gas for sample to wrap
Mixed gas with sample is sent into the ionic migration spectrometer for detecting, and the gas being discharged from the ionic migration spectrometer
Again sent back to the sampling apparatus by filtering/purification rear portion, formed with sample wrap mixed gas with sample with
Just sample is transported；With
In the first gas under recurrent state, the fluid between the sampling apparatus and the ionic migration spectrometer connects
Logical to be disconnected, the gas of the ionic migration spectrometer discharge is being sent back to ionic migration spectrometer after filtering/purification.
In one embodiment, ion mobility spectrometer apparatus further includes the first two position three-way valve, and fluid communication is followed described
Between sampling apparatus and ionic migration spectrometer in ring gas circuit and it is configured to:
Under the sampling and sample introduction state, the sampling apparatus and the ionic migration spectrometer is allowed to be in fluid communication, gas
Body enters the first two position three-way valve from the first entrance of the first two position three-way valve, leaves first from the outlet of the first two position three-way valve
Two position three-way valve is admitted to ionic migration spectrometer；And in the first gas under recurrent state, the sampling apparatus and institute
The fluid communication stated between ionic migration spectrometer is disconnected, and the gas for allowing ionic migration spectrometer to be discharged is by filtering/net
Ionic migration spectrometer is sent back to by the second entrance of first two position three-way valve after change.
In one embodiment, ionic migration spectrometer includes the first entrance of the ionic migration spectrometer, is configured to and institute
The first two position three-way valve is stated to be connected to so that gas leaves the first entrance after the first two position three-way valve from the ionic migration spectrometer
Into the ionic migration spectrometer.
In one embodiment, the circulation gas circuit is arranged so that the ion mobility spectrometer apparatus is allowed to adopt
Switch between recurrent state and cleaning sampling apparatus state in sample and sample introduction state, first gas,
Wherein, under the cleaning sampling apparatus state, the gas being discharged from ionic migration spectrometer is passing through filtering/purification
After be sent to the sampling apparatus, and be reversely discharged the sampling cartridge along the sampling apparatus after the sampling apparatus
It sets.
In one embodiment, the ion mobility spectrometer apparatus further includes the second two position three-way valve (105B), and fluid connects
Lead between the ionic migration spectrometer and the sampling apparatus in the circulation gas circuit and direct with the sampling apparatus
Connection, second two position three-way valve are configured to:
Sample and sample introduction state under, from ionic migration spectrometer be discharged gas after filtering/purification by described
Second two position three-way valve is sent directly to the sampling apparatus, and gas forms after mixing with sample and wraps mixed gas quilt with sample
It is sent into the ionic migration spectrometer, and the gas being discharged from the ionic migration spectrometer is passing through filtering/purification rear portion
The sampling apparatus is sent back to as carrier gas again through the second two position three-way valve；
Under the cleaning sampling apparatus state, the gas being discharged from ionic migration spectrometer is passed through after filtering/purification
The first outlet for crossing second two position three-way valve is sent to the sampling apparatus rather than ionic migration spectrometer, and passes through sampling cartridge
It sets to clean the sampling apparatus；With
In the first gas under recurrent state, the fluid between the ionic migration spectrometer and the sampling apparatus connects
It is logical to be disconnected, and the gas of ionic migration spectrometer discharge after filtering/purification portion gas pass through described second
The second outlet of two position three-way valve is sent back to ionic migration spectrometer, and gas is without the sampling apparatus.
In one embodiment, the circulation gas circuit includes the sub- gas circuit of circulation in first, the ionic migration spectrometer discharge
Gas be sent back to the ionic migration spectrometer via recycling sub- gas circuit in first；The sub- gas circuit of circulation in first are as follows: gas from
Enter after ionic migration spectrometer discharge from the entrance of the second two position three-way valve, be discharged from the second outlet of the second two position three-way valve,
It is sent to the first two position three-way valve, is then sent back to ionic migration spectrometer.
In one embodiment, the circulation gas circuit includes having certain the first surge tank of gas volume, is configured to and institute
It states ionic migration spectrometer to be in fluid communication to receive the gas being discharged from the ionic migration spectrometer, and allows from the first buffering
The gas of tank discharge is admitted to the ionic migration spectrometer.
In one embodiment, the circulation gas circuit includes filter, is configured to make in the circulation gas circuit from institute
The gas of ionic migration spectrometer discharge is stated at least through the filter, to filter/purification gas.
In one embodiment, the circulation gas circuit includes pump, is configured to drive gas to leave in the circulation gas circuit
The ionic migration spectrometer flows in the circulation gas circuit.
In one embodiment, the circulation gas circuit includes having certain the second surge tank of gas volume, is configured to receive
Gas from the first surge tank, and the gas being discharged from the second surge tank at least part is allowed to be admitted to the Ion transfer
Spectrometer.
In one embodiment, second surge tank can receive the gas from the first surge tank, and second is slow
The a part for rushing the gas of tank discharge is admitted to the ionic migration spectrometer, and another part is admitted to entering for the second two position three-way valve
Mouthful.
In one embodiment, the ionic migration spectrometer further includes first outlet and/second outlet, is configured to be discharged
Gas in the ionic migration spectrometer；With first circulation entrance and/or second circulation entrance are configured to recycle gas
Import the ionic migration spectrometer；And
The circulation gas circuit includes the sub- gas circuit of circulation in second, is configured to by the first outlet of the ionic migration spectrometer
For gas with the discharge of/second outlet at least through the filter, a part of subsequent gas passes through the ionic migration spectrometer
First circulation entrance and/or second circulation entrance be admitted to the ionic migration spectrometer.
Detailed description of the invention
Fig. 1 shows a kind of schematic diagram of ion mobility spectrometer apparatus of one embodiment of the disclosure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are in no development creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,
Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that
It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage
Solution is limiting the scope of the invention；The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
In the description of the present invention, it is to be understood that, components are limited using the words such as " first ", " second ", only
It is merely for convenience of distinguishing corresponding components, there is no Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore not
It can be interpreted as limiting the scope of the invention.
Multiple embodiments according to the disclosure are described with reference to the accompanying drawings.
Embodiment of the disclosure provides a kind of ion mobility spectrometer apparatus based on impulse sampling, comprising: ion mobility spectrometry
Instrument 101, is configured to test sample；Sampling apparatus 106, configuration is to acquire sample and export packet mixed gas with sample；
And circulation gas circuit, it is configured to for sampling apparatus 106 and the ionic migration spectrometer 101 being in fluid communication, so as to by sampling apparatus
The packet mixed gas with sample of 106 outputs is directed into the ionic migration spectrometer 101, and can be by ionic migration spectrometer
At least partly gas of 101 discharges returns to the sampling apparatus 106 and/or the ionic migration spectrometer 101.It should be understood that
Gas is formed using the various similar pipe such as glass tube, steel pipe, connecting tube between sampling apparatus 106 and ionic migration spectrometer 101
Close gas circuit, as circulation gas circuit.Recycling gas circuit includes multiple gas flow paths, to realize multiple functions.In subsequent implementation
It in example, is defaulted as even if not illustrating that there are pipelines, but in order to realize the conveying of gas, pipeline is also existing.
In one embodiment, the circulation gas circuit is arranged so that the ion mobility spectrometer apparatus is allowed to adopt
Switch between recurrent state in sample and sample introduction state and first gas.In the present embodiment, under the sampling and sample introduction state,
Sampling apparatus 106, which acquires sample and sample is wrapped to mixed gas with sample by the suction of pump, is sent into the Ion transfer
Spectrometer 101, and the gas being discharged from the ionic migration spectrometer 101 is sent back to again by filtering/purification rear portion
The sampling apparatus 106 (such as carrier gas) forms with sample and wraps mixed gas with sample to transport sample；Described
In first gas under recurrent state, the fluid communication between sampling apparatus 106 and ionic migration spectrometer 101 is disconnected, and ion moves
It moves the gas that spectrometer 101 is discharged and is being sent back to ionic migration spectrometer 101 after filtering/purification.
In one embodiment, the sampling and sample introduction state include sampling apparatus clean conditions, are cleaned in sampling apparatus
Under state, acquisition device 106 does not acquire sample, and gas is admitted to the sampling apparatus 106, gas by sampling apparatus 106 from
And the acquisition device is cleaned, finally ion mobility spectrometer apparatus can be discharged from sampling apparatus 106.Such as sampling apparatus
106 may include sampling head 1060, and gas is discharged from sampling head 1060.In other words, described under sampling and sample introduction state
Sampling apparatus 106 is in running order, and the gas (at this time by as sample introduction carrier gas) for being admitted to sampling apparatus 106 at this time is understood and adopted
The sample of collection mixes, to form packet mixed gas with sample；Under sampling apparatus clean conditions, gas is still admitted to and adopts
Acquisition means, however, acquisition device does not acquire sample at this time, gas flows automated cleaning acquisition device in acquisition device,
And it is discharged from sampling head.According to the ion mobility spectrometer apparatus of the present embodiment thus may be implemented acquisition sample working condition and
The clean switching of acquisition device, it is easy to operate.Further, since can be recycled from the gas that ionic migration spectrometer 101 is discharged
It uses (i.e. recurrent state in first gas), thus without the gas tank of external or built-in offer gas, gas material is saved, letter
Change whole equipment, improved portability, reduces testing cost.
Sampling apparatus 106 can be gas sampling assembly, be also possible to solid sampling device.Such as in one embodiment
In, sampling apparatus 106 can use the stainless steel tube (outer diameter is no more than 5mm) with some strength, be arranged at sampling head 1060
Function of temperature control can make stainless steel tube work in specific temperature, the convenient cleaning to wherein residual sample, before sampling head 1060
End is additionally provided with micro-strainer, to prevent dust or particle blocking sampling conduit in sampling process.
Ionic migration spectrometer 101 for example can be the transference tube of positive and negative double mode, such as can be using integration pottery
Porcelain double mode migration tube.The transference tube of ionic migration spectrometer 101 or positive or negative single mode.
In one embodiment of the present disclosure, the ion mobility spectrometer apparatus based on impulse sampling includes the first two-position three way
Valve 105A is in fluid communication between the sampling apparatus 106 and ionic migration spectrometer 101 in the circulation gas circuit.Herein, Ke Yili
Xie Wei, along gas flow direction, the first two position three-way valve 105A is in 106 downstream of sampling apparatus, while in the ion mobility spectrometry
The upstream of instrument 101.
First two position three-way valve 105A is configured to: it is described sampling and sample introduction state under, allow sampling apparatus 106 and from
Sub- mobility spectrometer 101 is in fluid communication, i.e., gas enters the one or two three from the first entrance 105A1 of the first two position three-way valve 105A
Port valve 105A leaves the first two position three-way valve 105A from the outlet 105A3 of the first two position three-way valve 105A, is admitted to Ion transfer
Spectrometer 101；Also, the stream in the first gas under recurrent state, between sampling apparatus 106 and ionic migration spectrometer 101
The gas that body connection is disconnected, and ionic migration spectrometer 101 is allowed to be discharged is passing through described one or two after filtering/purification
Triple valve 105A is sent back to ionic migration spectrometer 101, i.e., gas from the second entrance 105A2 of the first two position three-way valve 105A into
Enter the first two position three-way valve 105A, leaves the first two position three-way valve 105A, quilt from the outlet 105A3 of the first two position three-way valve 105A
It is sent into ionic migration spectrometer 101.The operation shape that first two position three-way valve 105A greatly facilitates ion mobility spectrometer apparatus is set
The switching of state can realize quickly sampling, the gentle body circulation of sample introduction by a two position three-way valve.Pass through control two three
Three-way electromagnetic valve 105A, the quick-make of the gas circuit for sampling and the time of disconnection can shorten, and realize grade impulse sampling.Example
Such as, the Pulsed Sampling time can be down to micro updating (such as sampling air flow 1L/min) down to Millisecond, single pulse minimum sample flow rate.
By this millisecond or hundreds of milliseconds of impulse sampling direct injected mode can not only improve trace sniff sensitivity and can be most
Limits reduce influence of the harsh extraneous detection environment to Ion transfer accuracy in detection.
In one embodiment, ionic migration spectrometer 101 includes ionic migration spectrometer first entrance 1011, is configured to and institute
State the first two position three-way valve 105A connection, gas leaves after the outlet 105A3 of the first two position three-way valve from ionic migration spectrometer the
One entrance 1011 enters the ionic migration spectrometer 101.The recurrent state in first gas, the gas of ionic migration spectrometer 101
After being discharged, by filtering or cleaning, enter the one or two three from the second entrance 105A2 of the first two position three-way valve 105A
Port valve 105A subsequently departs from the outlet 105A3 of the first two position three-way valve 105A, by ionic migration spectrometer first entrance 1011 into
Enter the ionic migration spectrometer 101.It should be noted that the ion mobility spectrometer apparatus of the present embodiment further include other component and
The pipeline of connection.
In one embodiment, the circulation gas circuit is arranged so that the ion mobility spectrometer apparatus is allowed to adopt
Switch between recurrent state and cleaning sampling apparatus state in sample and sample introduction state, first gas.In the cleaning sampling apparatus
Under state, the gas being discharged from ionic migration spectrometer 101 is being sent to the acquisition device after filtering/purification, and passes through
Sampling apparatus 106 is reversely discharged along the sampling apparatus 106 after acquisition device.Described herein to be, sampling apparatus 106 is adopted
When sample, sample can the left side of sampling apparatus 106 for example in figure flow to the right, and described sampling apparatus 106 is anti-
It is flowed to the left to the right side for referring to the sampling apparatus 106 from figure.That is, the gas being discharged from ionic migration spectrometer 101
Body is being sent to the acquisition device after filtering/purification, then left side is flowed to from the right side of sampling apparatus 106, from sampling
The entrance (such as entrance of the sampling head of sampling apparatus 106) of the sample introduction of device 106 is discharged.Process in this way, gas
It flows through in sampling apparatus 106, and is expelled directly out from the sampling end of sampling apparatus 106, clean sampling apparatus 106 and sampling pipe
Road, there is no the influences that the sample carryover of previous sampling detects present sample when sampling again.
In one embodiment, ion mobility spectrometer apparatus includes pump 103, is configured to drive gas in the circulation gas circuit
Body leaves the ionic migration spectrometer 101, flows in the circulation gas circuit.Setting pump 103 is advantageous, since pump 103 drives
It flows gas in the circulation gas circuit, thus negative pressure can be formed at the sampling head 1060 of the sampling apparatus 106, sample
Product suck sampling apparatus 106 by negative pressure.During ion mobility spectrometer apparatus work, pump 103 can be remained operational, such gas
Circulation is kept, is to execute the operation for starting to sample or stop sampling by adjusting the first two position three-way valve 105A.
In one embodiment, ion mobility spectrometer apparatus further includes the second two position three-way valve (105B), is in fluid communication
Between the ionic migration spectrometer 101 and the sampling apparatus 106 in the circulation gas circuit and with the sampling apparatus 106
Directly it is connected to.
The second two position three-way valve 105B is further configured to: under sampling and sample introduction state, from ionic migration spectrometer 101
The gas of discharge is being sent directly to the acquisition device by the second two position three-way valve 105B after filtering/purification,
Formation packet mixed gas with sample is admitted to the ionic migration spectrometer 101 and is analyzed after gas is mixed with sample；And
The gas being discharged from the ionic migration spectrometer 101 is passing through filtering/purification rear portion by again through the second two-position three way
Valve 105B is sent back to the sampling apparatus 106 as carrier gas.In the present embodiment, from the second two position three-way valve 105B's
Gas is sent to the gas access 1062 of sampling apparatus 106, and the gas access 1062 of sampling apparatus can be set in sampling apparatus
Any position, the rear underside that sampling apparatus 106 is arranged in gas access 1062 is shown in Fig. 1, however, this is not to limit
The position of sampling apparatus 106 can only be arranged in gas access 1062.
The second two position three-way valve 105B is configured to: under the cleaning sampling apparatus state, from ionic migration spectrometer
The gas of 101 discharges is being sent directly to the acquisition dress by the second two position three-way valve 105B after filtering/purification
Set rather than ionic migration spectrometer 101, and by acquisition device to clean the acquisition device, i.e. gas is from the second two-position three way
The entrance 105B2 of valve enters the second two position three-way valve, leaves the second two-position three way from the second two position three-way valve first outlet 105B1
Valve 105B.It is advantageous that the second two position three-way valve 105B is directly connected to the sampling apparatus 106 (gas access 1062)
, the influence of temperature change, ambient pressure variations and micro-sampling to ionic migration spectrometer 101 can be reduced.
The second two position three-way valve 105B is further configured to: in the first gas under recurrent state, Ion transfer
Fluid communication between spectrometer 101 and sampling apparatus 106 is disconnected, and the gas that ionic migration spectrometer 101 is discharged is passing through
Portion gas is sent back to ionic migration spectrometer 101 by the second two position three-way valve 105B after filtering/purification, i.e., gas from
The entrance 105B2 of second two position three-way valve 105B enters the second two position three-way valve, from the second two position three-way valve 105B second outlet
105B3 leaves the second two position three-way valve 105B, and gas is not sent to the acquisition device 106, such as the gas of sampling apparatus 106
Entrance 1062, but it is admitted to the ionic migration spectrometer 101.
In one embodiment, it is considered as, the circulation gas circuit includes the sub- gas circuit of circulation, the Ion transfer in first
The gas that spectrometer 101 is discharged is sent back to the ionic migration spectrometer 101 via recycling sub- gas circuit in first；Circulation in first
Gas circuit are as follows: gas enters after the discharge of ionic migration spectrometer 10 from the entrance 105B1 of the second two position three-way valve 105B, from the two or two
The second outlet 105B3 of position three-way valve 105B is discharged, and is sent to the first two position three-way valve 105A (that is, the first two-dimentional triple valve
Second entrance 105A2), then it is sent back to ionic migration spectrometer.
In one embodiment, the circulation gas circuit includes filter 104, be configured to make in the circulation gas circuit from
The gas that the ionic migration spectrometer 101 is discharged is at least through the filter 104, to filter/purification gas.In a reality
It applies in example, the circulation gas circuit includes having certain the first surge tank of gas volume 102A, is configured to and the ion mobility spectrometry
Instrument 101 is in fluid communication to receive the gas being discharged from the ionic migration spectrometer 101, and allows from the first surge tank 102A
At least part of the gas of discharge is admitted to the ionic migration spectrometer 101.
For example, in one embodiment, the gas being discharged from the first surge tank 102A can first pass around filter 104,
Subsequent component is admitted to by 104 filterings of filter/purified gas, such as is admitted to ionic migration spectrometer 101；It can also be with
It is using after other component, being admitted to ionic migration spectrometer 101, to realize circulating and using for gas.Filter
104 can be any suitable filter 104 in the prior art, here without limitation.Filter 104 is arranged first
The downstream of the gas flowing of surge tank 102A is advantageous, and the operational shock of filter 104 will not affect that ionic migration spectrometer
101 detection.
In one embodiment, setting pump 103 pumps 103 fortune for example, pump 103 and the first surge tank 102A are in fluid communication
Row can drive gas to be discharged from the first surge tank 102A, and the gas for pumping 103 discharges can be passed through filter 104.It pumps in this way
103 operational shock will not influence the detection accuracy of ionic migration spectrometer 101.
In one embodiment, the circulation gas circuit includes having certain the second surge tank of gas volume 102B, is configured to
The gas from the first surge tank 102A is received, and allows to be admitted to the ion from the gas that the second surge tank 102B is discharged and move
Move spectrometer 101.In one embodiment, pump 103 can be set between the first surge tank 102A and the second surge tank 102B.This
It is advantageous, pump 103 will be since the vibration that operation generates will be absorbed by the first surge tank 102A and the second surge tank 102B, pump 103
The vibration of generation will not influence the measurement of ionic migration spectrometer 101, and will not pass to sampling apparatus 106 influences sampling operation.
It pumps 103 optional diaphragm pumps 103 but is not limited to diaphragm pump 103.In conjunction with pump 103 and the first two position three-way valve and the two or two three
Port valve can form positive pressure between the second surge tank 102B and the second three-way magnetic valve 105B, may be implemented in sampling head
Remaining sample is cleaned, and external environment will not form the gas of internal system and interfere under this cleaning mode.
In one embodiment, filter 104 can be set between the first surge tank 102A and the second surge tank 102B.
This is favourable, and filter 104 will be absorbed due to running the vibration generated by the first surge tank 102A and the second surge tank 102B,
The vibration that filter 104 generates will not influence the measurement of ionic migration spectrometer 101.
The first surge tank 102A and/or the second surge tank 102B may include buffer film, for example, slow described first
The buffer film that at least partly setting can stretch for rushing at least one side of tank 102A and/or the second surge tank 102B seals
To enhance buffering effect, such as flexible buffer film, such as latex buffer film.
In one embodiment, the second surge tank 102B can receive the gas from the first surge tank 102A, and
And second a part of gas of surge tank 102B discharge be admitted to the ionic migration spectrometer 101, another part is admitted to the
The entrance of two two position three-way valves.Configuration in this way, the gas that ionic migration spectrometer 101 is discharged is by filter 104
It is directly conveyed back ionic migration spectrometer 101 after filtering, and requires no the second two position three-way valve 105B and the first two-position three way
Valve 105A, thus in the local circulation for realizing gas；Another part of the gas of second surge tank 102B discharge first by
It is first sent into the sampling apparatus 106, is then admitted to the ionic migration spectrometer 101 from sampling apparatus 106, that is, enters the two or two
The gas of position three-way valve is first sent into the sampling apparatus 106 from the first outlet 105B1 of the second two position three-way valve 105B discharge,
Or institute is admitted into the gas of the second two position three-way valve 105B from the second outlet 105B3 of the second two position three-way valve 105B discharge
State ionic migration spectrometer 101.It can distribute and be admitted to the ionic migration spectrometer 101 and be admitted to the second two position three-way valve 105B
Gas percentage, realize the adjusting of sampling.
It can not include the second surge tank 102B in the other embodiments of the disclosure, that is, gas is from the Ion transfer
After spectrometer discharge, it is admitted to the first surge tank 102A, is then extracted under the action of pumping 103, pump 103 feeds gas into filtering
Device 104, the gas a part for leaving filter 104 are sent back to ionic migration spectrometer, and another part is sent to the second two-position three way
Valve 105B.
In one embodiment, the ionic migration spectrometer 101 further include first outlet 1014 and/second outlet 1015,
The gas being configured in discharge ionic migration spectrometer 101；With, first circulation entrance 1012 and/or second circulation entrance 1013,
It is configured to recycle gas and imports the ionic migration spectrometer 101；And
The circulation gas circuit includes the sub- gas circuit of circulation in second, is configured to be gone out by the first of the ionic migration spectrometer 101
The gas that mouth 1014 and/second outlet 1015 are discharged passes through described at least through the filter 104, a part of subsequent gas
The first circulation entrance 1012 and/or second circulation entrance 1013 of ionic migration spectrometer 101 are admitted to the ionic migration spectrometer
101.In the present embodiment, ionic migration spectrometer is sent by first circulation entrance 1012 and/or second circulation entrance 1013
Gas is only used for the circulation of gas, and gas is not sent into the reaction zone or ionized region of ionic migration spectrometer.
A kind of ionic migration spectrometer scheme based on impulse sampling that the disclosure provides.Arteries and veins is realized by switching solenoid valve
Punching sampling, minimum sample mass is up to several tens of microliters, so that using the ion of this impulse sampling direct injected working method
Mobility spectrometer also can be lasting under harsh experimental situation the high cleanliness of holding from external environmental interference and steady in a long-term
Work, is significantly promoted compared to measuring devices, sensitivity such as traditional film sample introductions.Also, by formed positive pressure to pipeline,
Valve and sampling apparatus carry out blowback cleaning, without drawing the clean air of filtering from environment, it is ensured that internal system gas not by
On the one hand the interference of external environment can also remove additional filter assemblies from, to allow ionic migration spectrometer more severe
It is used under the external environment at quarter, the working efficiency of Ion transfer can be greatly improved.
Although some embodiments of this totality inventional idea have been shown and have illustrated, those of ordinary skill in the art will be managed
Solution can make a change these embodiments in the case where the principle and spirit without departing substantially from this totality inventional idea, the disclosure
Range is limited with claim and their equivalent.
Claims (13)
1. a kind of ion mobility spectrometer apparatus based on impulse sampling, comprising:
Ionic migration spectrometer is configured to test sample；
Sampling apparatus, configuration is to acquire sample and export packet mixed gas with sample；And
Gas circuit is recycled, is configured to for the sampling apparatus and the ionic migration spectrometer being in fluid communication, so as to by the sampling cartridge
The packet mixed gas with sample for setting output is directed into the ionic migration spectrometer, and can arrange the ionic migration spectrometer
Gas out at least partly returns to the ionic migration spectrometer and/or the sampling apparatus.
2. the ion mobility spectrometer apparatus according to claim 1 based on impulse sampling, wherein the circulating air road configures
At alloing the ion mobility spectrometer apparatus that can cut between recurrent state in sampling and sample introduction state and first gas
It changes,
Wherein under the sampling and sample introduction state, the sampling apparatus acquires sample and passes through gas for sample to include sample
The mixed gas of product is sent into the ionic migration spectrometer for detecting, and is being passed through from the gas that the ionic migration spectrometer is discharged
Filtering/purification rear portion is sent back to the sampling apparatus again, is formed with sample and is wrapped mixed gas with sample to transport
Feeding sample；With
Fluid communication quilt in the first gas under recurrent state, between the sampling apparatus and the ionic migration spectrometer
It disconnects, the gas of the ionic migration spectrometer discharge is being sent back to ionic migration spectrometer after filtering/purification.
3. the ion mobility spectrometer apparatus according to claim 2 based on impulse sampling further includes the first two position three-way valve
(105A) is in fluid communication between the sampling apparatus and ionic migration spectrometer in the circulation gas circuit and is configured to:
Under the sampling and sample introduction state, the sampling apparatus and the ionic migration spectrometer is allowed to be in fluid communication, gas from
The first entrance of first two position three-way valve enters the first two position three-way valve, leaves the one or two from the outlet of the first two position three-way valve
Triple valve is admitted to ionic migration spectrometer；And in the first gas under recurrent state, the sampling apparatus and it is described from
Fluid communication between sub- mobility spectrometer is disconnected, and the gas for allowing ionic migration spectrometer to be discharged is after filtering/purification
Ionic migration spectrometer is sent back to by the second entrance of first two position three-way valve (105A).
4. the ion mobility spectrometer apparatus according to claim 3 based on impulse sampling, wherein ionic migration spectrometer includes
The first entrance of the ionic migration spectrometer is configured to be connected to first two position three-way valve (105A) so that gas leaves
Enter the ionic migration spectrometer from the first entrance of the ionic migration spectrometer after one two position three-way valve.
5. the ion mobility spectrometer apparatus according to claim 2 based on impulse sampling, wherein the circulating air road configures
At alloing the ion mobility spectrometer apparatus can be in sampling and sample introduction state, recurrent state and cleaning in first gas
Switch between sampling apparatus state,
Wherein, under the cleaning sampling apparatus state, the gas being discharged from ionic migration spectrometer is in the quilt after filtering/purification
It send to the sampling apparatus, and is reversely discharged the sampling apparatus along the sampling apparatus after the sampling apparatus.
6. the ion mobility spectrometer apparatus according to claim 5 based on impulse sampling, wherein the ionic migration spectrometer
Device further includes the second two position three-way valve (105B), and the ionic migration spectrometer in the circulation gas circuit and institute is in fluid communication
It states between sampling apparatus and is directly connected to the sampling apparatus, second two position three-way valve (105B) is configured to:
Sample and sample introduction state under, from ionic migration spectrometer be discharged gas after filtering/purification by described second
Two position three-way valve (105B) is sent directly to the sampling apparatus, and gas forms after mixing with sample and wraps mixed gas with sample
It is admitted to the ionic migration spectrometer, and the gas being discharged from the ionic migration spectrometer is passing through the latter portion of filtering/purification
Divide and is sent back to the sampling apparatus as carrier gas again through the second two position three-way valve (105B)；
Under the cleaning sampling apparatus state, from ionic migration spectrometer be discharged gas after filtering/purification by institute
The first outlet for stating the second two position three-way valve (105B) is sent to the sampling apparatus rather than ionic migration spectrometer, and passes through sampling
Device is to clean the sampling apparatus；With
Fluid communication quilt in the first gas under recurrent state, between the ionic migration spectrometer and the sampling apparatus
Disconnect, and the ionic migration spectrometer discharge gas after filtering/purification portion gas pass through described two or two
The second outlet of triple valve (105B) is sent back to ionic migration spectrometer, and gas is without the sampling apparatus.
7. the ion mobility spectrometer apparatus according to claim 6 based on impulse sampling, wherein the circulating air road includes
The sub- gas circuit of circulation in first, the gas of the ionic migration spectrometer discharge via recycle in first sub- gas circuit be sent back to it is described from
Sub- mobility spectrometer；The sub- gas circuit of circulation in first are as follows: gas is after ionic migration spectrometer discharge from the entrance of the second two position three-way valve
Into, from the second outlet of the second two position three-way valve be discharged, be sent to the first two position three-way valve, be then sent back to Ion transfer
Spectrometer.
8. the ion mobility spectrometer apparatus according to claim 7 based on impulse sampling, wherein the circulating air road includes
With certain the first surge tank of gas volume, it is configured to be in fluid communication with the ionic migration spectrometer to receive from the ion
The gas of mobility spectrometer discharge, and allow to be admitted to the ionic migration spectrometer from the gas that the first surge tank is discharged.
9. the ion mobility spectrometer apparatus according to claim 8 based on impulse sampling, wherein the circulating air road includes
Filter is configured to make the gas being discharged from the ionic migration spectrometer at least through the filtering in the circulation gas circuit
Device, to filter/purification gas.
10. the ion mobility spectrometer apparatus according to claim 8 based on impulse sampling, wherein the circulating air road includes
Pump is configured to drive gas to leave the ionic migration spectrometer in the circulation gas circuit, flow in the circulation gas circuit.
11. the ion mobility spectrometer apparatus according to claim 9 based on impulse sampling, wherein the circulating air road includes
With certain the second surge tank of gas volume (102B), it is configured to receive the gas from the first surge tank, and allow from second
Gas at least part of surge tank discharge is admitted to the ionic migration spectrometer.
12. the ion mobility spectrometer apparatus according to claim 11 based on impulse sampling, wherein second surge tank
The gas from the first surge tank can be received, and a part of the gas of the second surge tank discharge is admitted to the ion and moves
Spectrometer is moved, another part is admitted to the entrance of the second two position three-way valve.
13. the ion mobility spectrometer apparatus according to claim 12 based on impulse sampling, wherein the ion mobility spectrometry
Instrument further includes first outlet and/second outlet, is configured to the gas being discharged in the ionic migration spectrometer；With first circulation
Entrance and/or second circulation entrance are configured to recycling gas into the importing ionic migration spectrometer；And
The circulation gas circuit includes the sub- gas circuit of circulation in second, is configured to the first outlet and/the by the ionic migration spectrometer
For the gas of two outlet discharges at least through the filter, a part of subsequent gas passes through the first of the ionic migration spectrometer
Loop head and/or second circulation entrance are admitted to the ionic migration spectrometer.
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| CN201811654155.1A CN109524290A (en) | 2018-12-29 | 2018-12-29 | Ion mobility spectrometer apparatus based on impulse sampling |
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| CN201811654155.1A CN109524290A (en) | 2018-12-29 | 2018-12-29 | Ion mobility spectrometer apparatus based on impulse sampling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988208A (en) * | 2019-12-18 | 2020-04-10 | 中科新天地（合肥）环保科技有限公司 | VOCs check out test set based on ion mobility spectrometry |
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