CN206225320U - Liquid aids in open type atmospheric pressure ionization device - Google Patents
Liquid aids in open type atmospheric pressure ionization device Download PDFInfo
- Publication number
- CN206225320U CN206225320U CN201621211026.1U CN201621211026U CN206225320U CN 206225320 U CN206225320 U CN 206225320U CN 201621211026 U CN201621211026 U CN 201621211026U CN 206225320 U CN206225320 U CN 206225320U
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- China
- Prior art keywords
- atmospheric pressure
- open type
- liquid
- shower nozzle
- ionization device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a kind of liquid auxiliary open type atmospheric pressure ionization device, and the liquid auxiliary open type atmospheric pressure ionization device includes dielectric barrier discharge ion gun, and container, the container accommodates auxiliary liquid；Supply unit, the supply unit is used to for the auxiliary liquid in the container to be transported to shower nozzle；Shower nozzle, is ionized from the auxiliary liquid of the shower nozzle outgoing by the beam-plasma of the nozzle outgoing from the dielectric barrier discharge ion gun；Power supply, the power supply applies DC voltage to the shower nozzle；Injector, from the auxiliary liquid ionization that the testing sample of the injector outgoing is ionized.The utility model has the advantages that sample ionization efficiency high, signal to noise ratio are high.
Description
Technical field
The utility model is related to mass spectral analysis, more particularly to liquid auxiliary open type atmospheric pressure ionization device.
Background technology
Open type mass ion source is that one kind or need not only need little sample pre-treatments, can be in unlimited atmospheric pressure environment
In direct novel ion source that sample is desorbed and ionized, in situ, real-time, quick mass spectral analysis needs can be met,
And with detection stability higher and sensitivity (up to ppb grade), be current mass spectrometer field compete focus, focus and
Forward position.
DBDI is to teach a kind of new mass ions proposed first in the world in 2007 by Tsing-Hua University Zhang Xinrong
Source, general principle is：The inert gases such as helium in insulated dielectric tube are excited by ac high-voltage, sprayable plasma is formed
Body beam, recycles the mechanism such as Penning ionization to realize sample ionization, be a kind of non-surface contact-type atmospheric pressure parsing/ionization-
Analytical technique of mass spectrum.
At present, have that sample ionization efficiency is low, the low deficiency of signal to noise ratio using the mass spectrograph of DBDI.
Utility model content
Be to solve the deficiency in above-mentioned prior art, the utility model provide a kind of sample ionization efficiency high,
The liquid auxiliary open type atmospheric pressure ionization device that signal to noise ratio is high, detection sensitivity is high.
The purpose of this utility model is achieved through the following technical solutions：
A kind of liquid aids in open type atmospheric pressure ionization device, the liquid to aid in open type atmospheric pressure ionization device
Including dielectric barrier discharge ion gun；The liquid auxiliary open type atmospheric pressure ionization device is further included：
Container, the container accommodates auxiliary liquid；
Supply unit, the supply unit is used to for the auxiliary liquid in the container to be transported to shower nozzle；
Shower nozzle, from the auxiliary liquid of the shower nozzle outgoing by the nozzle outgoing from the dielectric barrier discharge ion gun etc.
Ion beam ion；
Power supply, the power supply applies DC voltage to the shower nozzle；
Injector, from the auxiliary liquid ionization that the testing sample of the injector outgoing is ionized.
Open type atmospheric pressure ionization device is aided according to above-mentioned liquid, it is preferable that the shower nozzle is hollow needle-like
Structure.
Open type atmospheric pressure ionization device is aided according to above-mentioned liquid, it is preferable that the internal diameter of the shower nozzle is 20-
100 μm, the internal diameter in the exit of the shower nozzle is 5-30 μm.
Open type atmospheric pressure ionization device is aided according to above-mentioned liquid, it is preferable that the end of the shower nozzle, injector
End and the end for facing mass spectrum import of the nozzle of the dielectric barrier discharge ion gun inwall along nozzle center
Axis stretch out the solid to be formed outer rim it is tangent.
Open type atmospheric pressure ionization device is aided according to above-mentioned liquid, it is preferable that the central axis of the nozzle with
The central axis of mass spectrum import is conllinear.
Open type atmospheric pressure ionization device, alternatively, the inner and outer wall of the shower nozzle are aided according to above-mentioned liquid
With conductive layer, the power supply connects the conductive layer.
Open type atmospheric pressure ionization device is aided according to above-mentioned liquid, it is preferable that the auxiliary liquid is acid or acid
Property salting liquid.
Open type atmospheric pressure ionization device is aided according to above-mentioned liquid, it is preferable that the DC voltage is 0-20kV.
Compared with prior art, the utility model have the advantage that for：
1. the Ionization Efficiency of sample can be improved, increases signal intensity, reduce ambient noise, significantly improved cut-off and stop
The detection sensitivity of discharge ion source；
2. by aiding in different solution distinctive adduct ion form can be formed for different samples.
Brief description of the drawings
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 open type atmospheric pressure ionization device according to the utility model embodiment 1；
Fig. 2 is the mass spectrogram of the caffeine measured according to prior art；
Fig. 3 is the mass spectrogram of the caffeine measured according to the utility model embodiment 2；
Fig. 4 is the mass spectrogram of the propazine measured according to prior art；
Fig. 5 is the mass spectrogram of the propazine measured according to the utility model embodiment 3；
Fig. 6 is the Sudan red mass spectrogram measured according to prior art；
Fig. 7 is the Sudan red mass spectrogram measured according to the utility model embodiment 4.
Specific embodiment
Fig. 1-7 and following description describe optional embodiment of the present utility model how to instruct those skilled in the art
Implement and reproduce the utility model.In order to instruct technical solutions of the utility model, some conventional aspects are simplified or have eliminated.This
Art personnel should be appreciated that modification from these implementation methods or replacement will be in the range of the utility model.This area
Technical staff should be appreciated that following characteristics can combine to form multiple modifications of the present utility model in a variety of ways.Thus, originally
Utility model is not limited to following optional embodiments, and is only limited by claim and their equivalent.
Embodiment 1：
Fig. 1 schematically illustrates the knot of the liquid auxiliary open type atmospheric pressure ionization device of the utility model embodiment
Structure sketch, as shown in figure 1, liquid auxiliary open type atmospheric pressure ionization device includes：
Dielectric barrier discharge ion gun；
Container, the container accommodates auxiliary liquid, such as correspondingly sets acid or acid salt solution according to detection object difference
As assisted solution, such as hydrochloric acid, phosphoric acid, formic acid, acetic acid, benzoic acid；Such as carbonate, phosphate, borate solution；
Supply unit, the supply unit is used to for the auxiliary liquid in the container to be transported to shower nozzle, such as using pump, pipe
Quantitative, conveying auxiliary liquid is removed in the combination in road；
Shower nozzle, from the auxiliary liquid of the shower nozzle outgoing by the nozzle outgoing from the dielectric barrier discharge ion gun etc.
Ion beam ion；
Power supply, the power supply applies DC voltage to the shower nozzle；
Injector, from the auxiliary liquid ionization that the testing sample of the injector outgoing is ionized.
The course of work of open type atmospheric pressure ionization：
Gas is ionized to form plasma beam in dielectric barrier discharge ion gun, and from nozzle outgoing；
There is electric charge transfer with the plasma beam from nozzle outgoing in the auxiliary liquid for being applied in voltage from shower nozzle outgoing
Reaction, so as to be ionized；
There is charge transfer reaction in the auxiliary liquid of testing sample and ionization from injector outgoing, so as to by ion
Change.
Embodiment 2：
Liquid auxiliary open type atmospheric pressure ionization device according to the utility model embodiment 1 is in caffeine is detected
Application examples.
In the application examples, container selection closed glass jar, volume 50mL；Shower nozzle selects quartz glass capillary, internal diameter
It it is 20 μm, exit internal diameter is 10 μm, shower nozzle connection voltage is set to 0V；The heating-up temperature of dielectric barrier discharge ion gun is set to
140 DEG C, nozzle is away from mass spectrum injection port 1.5cm；Injector uses sample introduction capillary, away from mass spectrum injection port 0.5cm, shower nozzle be located at from
Between component nozzle and sample introduction capillary, away from mass spectrum injection port 1cm, the end of the shower nozzle, the end of injector and given an account of
The inwall of the end for facing mass spectrum import of the nozzle of matter barrier discharge ion gun stretches out shape along the central axis of nozzle
Into solid outer rim it is tangent, the shower nozzle and injector outlet central axis respectively with the central axis phase of the nozzle
Hand over, the central axis of the nozzle is conllinear with the central axis of mass spectrum import；Mass Spectrometer Method m/z scopes are set to 50~1000, lazy
Property gas flow rate be set to 0.8L/min, detection sample is caffeine standards sample (being dissolved in methyl alcohol, concentration 50ppb), assisted solution
It is the hydrochloric acid solution of 5mol.As Figure 2-3, Mass Spectrometer Method sensitivity improves 12 times.
Embodiment 3：
Liquid auxiliary open type atmospheric pressure ionization device according to the utility model embodiment 1 is in propazine is detected
Application examples.
In the application examples, container selection closed metal bottle, volume 50mL；Shower nozzle uses quartz glass capillary, inwall
Conductive layer is coated with outer wall, internal diameter is 50 μm, and exit internal diameter is 30 μm；Conductive layer connection DC voltage is set to 10V；Ion gun
Heating-up temperature be set to 140 DEG C, away from mass spectrum injection port 1.5cm, sample introduction capillary is away from mass spectrum injection port 0.5cm, shower nozzle position for nozzle
Between ion gun nozzle and sample introduction capillary, away from mass spectrum injection port 1cm, the end of the shower nozzle, the end of injector and institute
State the nozzle of dielectric barrier discharge ion gun the end for facing mass spectrum import inwall along the central axis of nozzle to extension
The outer rim for stretching the solid to be formed is tangent, the shower nozzle and injector outlet central axis respectively with the central shaft of the nozzle
Line intersects, and the central axis of the nozzle is conllinear with the central axis of mass spectrum import；Mass Spectrometer Method m/z scopes are set to 50~
1000, inert gas flow velocity is set to 0.8L/min, and detection sample is propazine standard sample (being dissolved in methyl alcohol, concentration 50ppb), auxiliary
Hydrotropy liquid is the acetic acid solution of 5mol.As illustrated in figures 4-5, Mass Spectrometer Method sensitivity improves 10 times.
Embodiment 4：
Liquid auxiliary open type atmospheric pressure ionization device according to the utility model embodiment 1 is in detection is Sudan red
Application examples.
In the application examples, container selection closed metal bottle, volume is 50mL；Shower nozzle selects metal material, and internal diameter is 50 μ
M, the internal diameter in exit is 15 μm；Shower nozzle connection voltage is set to 20V；The heating-up temperature of ion gun is set to 140 DEG C, ion gun nozzle
Away from mass spectrum injection port 1.5cm, sample introduction capillary is located between nozzle and sample introduction capillary away from mass spectrum injection port 0.5cm, shower nozzle, away from
Mass spectrum injection port 1cm, the end of the shower nozzle, the end of injector are faced with the nozzle of the dielectric barrier discharge ion gun
The inwall of the end of mass spectrum import along the central axis of nozzle stretch out the solid to be formed outer rim it is tangent, the shower nozzle
Central axis of the central axis exported with injector respectively with the nozzle intersects, and central axis and the mass spectrum of the nozzle enter
The central axis of mouth is conllinear；Mass Spectrometer Method m/z scopes are set to 50~1000, and inert gas flow velocity is set to 0.8L/min, detect sample
Product are Sudan red standard sample (being dissolved in methyl alcohol, concentration 100ppb), and assisted solution is the carbonate solution of 10mol.Such as Fig. 6-7
Shown, Mass Spectrometer Method sensitivity improves 6 times.
Claims (8)
1. a kind of liquid aids in open type atmospheric pressure ionization device, the liquid to aid in open type atmospheric pressure ionization device bag
Include dielectric barrier discharge ion gun；It is characterized in that：The liquid auxiliary open type atmospheric pressure ionization device is further included：
Container, the container accommodates auxiliary liquid；
Supply unit, the supply unit is used to for the auxiliary liquid in the container to be transported to shower nozzle；
Shower nozzle, the auxiliary liquid from the shower nozzle outgoing is by the plasma of the nozzle outgoing from the dielectric barrier discharge ion gun
Beam；
Power supply, the power supply applies DC voltage to the shower nozzle；
Injector, from the auxiliary liquid ionization that the testing sample of the injector outgoing is ionized.
2. liquid according to claim 1 aids in open type atmospheric pressure ionization device, it is characterised in that：The shower nozzle is
Hollow acicular texture.
3. liquid according to claim 2 aids in open type atmospheric pressure ionization device, it is characterised in that：The shower nozzle
Internal diameter is 20-100 μm, and the internal diameter in the exit of the shower nozzle is 5-30 μm.
4. liquid according to claim 1 aids in open type atmospheric pressure ionization device, it is characterised in that：The shower nozzle
End, the end of injector and the end for facing mass spectrum import of the nozzle of the dielectric barrier discharge ion gun inwall along
The central axis of nozzle stretch out the solid to be formed outer rim it is tangent.
5. liquid according to claim 4 aids in open type atmospheric pressure ionization device, it is characterised in that：The nozzle
Central axis is conllinear with the central axis of mass spectrum import.
6. liquid according to claim 1 aids in open type atmospheric pressure ionization device, it is characterised in that：The shower nozzle
Inner and outer wall has conductive layer, and the power supply connects the conductive layer.
7. liquid according to claim 1 aids in open type atmospheric pressure ionization device, it is characterised in that：The auxiliary liquid
Body is acid or acidic salt solution.
8. liquid according to claim 1 aids in open type atmospheric pressure ionization device, it is characterised in that：The direct current
It is 0-20kV to press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621211026.1U CN206225320U (en) | 2016-11-10 | 2016-11-10 | Liquid aids in open type atmospheric pressure ionization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621211026.1U CN206225320U (en) | 2016-11-10 | 2016-11-10 | Liquid aids in open type atmospheric pressure ionization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206225320U true CN206225320U (en) | 2017-06-06 |
Family
ID=58792957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621211026.1U Withdrawn - After Issue CN206225320U (en) | 2016-11-10 | 2016-11-10 | Liquid aids in open type atmospheric pressure ionization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206225320U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783509A (en) * | 2016-11-10 | 2017-05-31 | 宁波华仪宁创智能科技有限公司 | Open type atmospheric pressure ionization device and method |
-
2016
- 2016-11-10 CN CN201621211026.1U patent/CN206225320U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783509A (en) * | 2016-11-10 | 2017-05-31 | 宁波华仪宁创智能科技有限公司 | Open type atmospheric pressure ionization device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170606 Effective date of abandoning: 20180209 |
|
| AV01 | Patent right actively abandoned |