CN108204966A - A kind of plasma jet device available for element in spectral detection liquid - Google Patents
A kind of plasma jet device available for element in spectral detection liquid Download PDFInfo
- Publication number
- CN108204966A CN108204966A CN201810016421.1A CN201810016421A CN108204966A CN 108204966 A CN108204966 A CN 108204966A CN 201810016421 A CN201810016421 A CN 201810016421A CN 108204966 A CN108204966 A CN 108204966A
- Authority
- CN
- China
- Prior art keywords
- electrode
- plasma jet
- quartz ampoule
- jet device
- spectral detection
- Prior art date
- 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.)
- Pending
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/66—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence
- G01N21/69—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence specially adapted for fluids, e.g. molten metal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/66—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence
- G01N21/67—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence using electric arcs or discharges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
Abstract
The present invention provides a kind of plasma jet device available for element in spectral detection liquid, including class syringe quartz ampoule, sample cell, adding mouth, air inlet, nozzle, pin electrode and ring electrode, the sample cell is in the lower left described in the class syringe quartz ampoule at nozzle, the adding mouth is in the top of the sample cell, the adding mouth is provided with the sample-adding lid, the air inlet is in the lower left of the syringe quartz ampoule, the nozzle is on the right side of the syringe quartz ampoule, the pin electrode is placed among the class syringe quartz ampoule, the ring electrode is wrapped at the nozzle.After liquid sample can be added to sample cell by the present invention by adding mouth, with the mode of atmospheric plasma gas jet electric discharge, elemental composition in liquid is detected by spectrometer, has many advantages, such as that device volume is small, testing cost is low, step is simple.
Description
Technical field
The present invention relates to a kind of plasma jet devices, and in particular to it is a kind of available in spectral detection liquid element etc.
Gas ions fluidic device belongs to atmospheric pressure plasma field.
Background technology
Atmosphere pressure plasma jet flow (APPJ) is nonequilibrium plasma under a kind of atmospheric pressure developed in recent years
Source, it had both had big traditional atmosphere pressure discharging system load energy particle density height, system structure design space, economy and process
Fireballing advantage, but have the advantages that low pressure glow discharge plasma medium temperature is low and space uniform, low temperature
Feature and good controllability make it show good advantage in application field.The device miniature portable, it is easy to operate, make
With at low cost, monitored available for elemental analysis.
But current atmosphere pressure plasma jet flow, it is mainly used for gas discharge experiment and detection, can not be suitable for
Fluid sample elemental composition detects.Method currently used for measuring liquid element is mainly atomic absorption spectrography (AAS), inductive coupling
Plasma Mass Spectrometry etc. but these detecting instrument volumes are big, testing cost is high, detecting step is cumbersome.
Invention content
The technical problem to be solved by the present invention is to provide a kind of plasma jet available for element in spectral detection liquid
Device, the device volume is small, testing cost is low, detecting step is simple.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of plasma jet device available for element in spectral detection liquid includes class syringe quartz ampoule, sample
Slot, adding mouth, air inlet, nozzle, pin electrode and ring electrode, the sample cell is in nozzle described in the class syringe quartz ampoule
The lower left at place, for the adding mouth in the top of the sample cell, the adding mouth is provided with the sample-adding lid, the air inlet
In the lower left of the syringe quartz ampoule, the nozzle is placed in institute in the right side of the syringe quartz ampoule, the pin electrode
It states among class syringe quartz ampoule, the ring electrode is wrapped at the nozzle.In addition to the electrode and the sample-adding lid, dress
It puts main part and firing is processed by quartz glass, quartzy bore is 6 millimeters, and nozzle inside diameter is 2 millimeters, and sample-adding well width is 6
Millimeter, depth is about 5 millimeters.
The class syringe quartz ampoule has the sample cell and the adding mouth, can be added testing liquid by adding mouth
In the sample cell, sample liquid level is consistent with left side quartz tube wall, is discharged by plasma jet, available light spectrometer observation station
State the discharge spectrum of sample cell.
The pin electrode and ring electrode need to be connected with ionization daughter power supply, wherein the pin electrode is connecing plasma electrical source just
Pole, the ring electrode connect plasma electrical source cathode or ground connection.
The pin electrode and the ring electrode can also use dual frequency plasma power drives, preferential that radio-frequency power supply is selected to drive
The pin electrode is moved, low-frequency power drives the ring electrode.
The pin electrode can change ring-shaped electrode into, be wrapped on the left of the sample cell outside quartz ampoule.
The pin electrode material is copper or tungsten, and diameter is about 1 millimeter, and the ring electrode material is copper, and width is about 10 millis
Rice.
The sample-adding lid material is polytetrafluoroethylene (PTFE).
Institute can suitably zoom in or out to scale data according to application.
Beneficial effects of the present invention：A kind of plasma jet available for element in spectral detection liquid provided by the invention
Device, the device just have liquid loading slot, and the sample cell is small, and sample requirements are small, and detection only needs a few drop samples, lead to
The mode of gas discharge is crossed, available for detecting the elemental composition of fluid sample.In process gas discharge, when two electrode voltages
When relatively low, the liquid surface in loading slot will form liquid phase plasma, when voltage is higher, the liquid in entire loading slot
Liquid phase plasma state will be in, liquid phase plasma discharge spectrum is detected by spectrometer, quilt can be obtained by analyzing the spectrum
The elemental composition and concentration information of fluid sample are surveyed, so as to fulfill the detection of element in liquid.
Description of the drawings
Fig. 1 is a kind of plasma jet device schematic diagram available for element in spectral detection liquid of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings, and following embodiment is only used for clearly illustrating the present invention
Technical solution, and be not intended to limit the protection scope of the present invention and limit the scope of the invention.
As shown in Figure 1, a kind of plasma jet device available for element in spectral detection liquid, it is characterised in that：Packet
Include class syringe quartz ampoule 1, sample cell 2, adding mouth 3, air inlet 4, nozzle 5, pin electrode 6 and ring electrode 7, the sample cell
2 in the lower left described in the class syringe quartz ampoule 1 at nozzle 5, and the adding mouth 3 is described in the top of the sample cell 2
Adding mouth 3 is provided with the sample-adding lid 8, and the air inlet 4 is in the lower left of the syringe quartz ampoule 1, and the nozzle 5 is in institute
The right side of syringe quartz ampoule 1 is stated, the pin electrode 6 is placed among the class syringe quartz ampoule, and the ring electrode 7 is wrapped in
At the nozzle 5.
The class syringe quartz ampoule has the sample cell and the adding mouth, can be added testing liquid by adding mouth
It in the sample cell, is discharged by plasma jet, available light spectrometer observation station states the discharge spectrum of sample cell.
The pin electrode and ring electrode need to be connected with ionization daughter power supply, wherein the pin electrode is connecing plasma electrical source just
Pole, the ring electrode connect plasma electrical source cathode or ground connection.
The pin electrode and the ring electrode can also use dual frequency plasma power drives, preferential that radio-frequency power supply is selected to drive
The pin electrode is moved, low-frequency power drives the ring electrode.
The pin electrode can change ring-shaped electrode into, be wrapped on the left of the sample cell outside quartz ampoule.
The pin electrode material is copper or tungsten, and the ring electrode material is copper.
The sample-adding lid material is polytetrafluoroethylene (PTFE).
A kind of plasma jet device available for element in spectral detection liquid provided by the invention, the device just have liquid
Body loading slot, the sample cell is small, and sample requirements are small, and detection only needs a few drop samples, by way of gas discharge,
Available for detecting the elemental composition of fluid sample.In process gas discharge, when two electrode voltages are relatively low, in loading slot
Liquid surface will form liquid phase plasma, and when voltage is higher, the liquid in entire loading slot will also be in liquid phase plasma
Body state detects liquid phase plasma discharge spectrum by spectrometer, and the element of fluid to be measured sample can be obtained by analyzing the spectrum
Ingredient and concentration information, so as to fulfill the detection of element in liquid.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of plasma jet device available for element in spectral detection liquid, it is characterised in that：Including class syringe stone
English pipe (1), sample cell (2), adding mouth (3), air inlet (4), nozzle (5), pin electrode (6) and ring electrode (7), the sample
Lower left of the slot (2) at the class syringe quartz ampoule (1) nozzle (5), the adding mouth (3) is in the sample cell
(2) top, the air inlet (4) is in the lower left of the syringe quartz ampoule (1), and the nozzle (5) is in the syringe
The right side of quartz ampoule (1), the pin electrode (6) are placed among the class syringe quartz ampoule, and the ring electrode (7) is wrapped in institute
It states at nozzle (5).
2. a kind of plasma jet device available for element in spectral detection liquid according to claim 1, feature
It is：The adding mouth (3) is provided with the sample-adding lid (8).
3. a kind of plasma jet device available for element in spectral detection liquid according to claim 1, feature
It is：The pin electrode (6) and ring electrode (7) are connected with ionization daughter power supply, wherein the pin electrode (6) connects plasma electricity
Source anode, the ring electrode (7) connect plasma electrical source cathode or ground connection.
4. a kind of plasma jet device available for element in spectral detection liquid according to claim 1, feature
It is：The pin electrode (6) and the ring electrode (7) dual frequency plasma power drives.
5. a kind of plasma jet device available for element in spectral detection liquid according to claim 4, feature
It is：The pin electrode (6) is driven with radio-frequency power supply, and the ring electrode (7) is driven with low-frequency power.
6. a kind of plasma jet device available for element in spectral detection liquid according to claim 4, feature
It is：The pin electrode (6) can change ring-shaped electrode into, be wrapped on the left of the sample cell (2) outside quartz ampoule.
7. a kind of plasma jet device available for element in spectral detection liquid according to claim 1, feature
It is：Pin electrode (6) material is copper or tungsten, and ring electrode (7) material is copper.
8. a kind of plasma jet device available for element in spectral detection liquid according to claim 1, feature
It is：Described sample-adding lid (8) material is polytetrafluoroethylene (PTFE).
9. a kind of plasma jet device available for element in spectral detection liquid according to claim 1, feature
It is：Class syringe quartz ampoule (1) internal diameter is 6 millimeters, and nozzle (5) internal diameter is 2 millimeters, and sample cell (2) width is 6 millis
Rice, sample cell (2) depth is about 5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810016421.1A CN108204966A (en) | 2018-01-08 | 2018-01-08 | A kind of plasma jet device available for element in spectral detection liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810016421.1A CN108204966A (en) | 2018-01-08 | 2018-01-08 | A kind of plasma jet device available for element in spectral detection liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108204966A true CN108204966A (en) | 2018-06-26 |
Family
ID=62604984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810016421.1A Pending CN108204966A (en) | 2018-01-08 | 2018-01-08 | A kind of plasma jet device available for element in spectral detection liquid |
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| Country | Link |
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| CN (1) | CN108204966A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202092945U (en) * | 2011-03-17 | 2011-12-28 | 浙江师范大学 | Liquid sample introduction device |
| CN102333410A (en) * | 2011-09-16 | 2012-01-25 | 西安交通大学 | Atmospheric pressure cold plasma jet device for etching photoresist materials |
| CN102883516A (en) * | 2012-10-31 | 2013-01-16 | 重庆大学 | Novel needle-ring type plasma jet device |
| CN104502330A (en) * | 2014-12-12 | 2015-04-08 | 大连理工大学 | Laser-induced breakdown spectrum detection device for detecting liquid sample |
| CN109327954A (en) * | 2017-08-01 | 2019-02-12 | 大连理工大学 | A kind of atomization cold-plasma jet generating device |
-
2018
- 2018-01-08 CN CN201810016421.1A patent/CN108204966A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202092945U (en) * | 2011-03-17 | 2011-12-28 | 浙江师范大学 | Liquid sample introduction device |
| CN102333410A (en) * | 2011-09-16 | 2012-01-25 | 西安交通大学 | Atmospheric pressure cold plasma jet device for etching photoresist materials |
| CN102883516A (en) * | 2012-10-31 | 2013-01-16 | 重庆大学 | Novel needle-ring type plasma jet device |
| CN104502330A (en) * | 2014-12-12 | 2015-04-08 | 大连理工大学 | Laser-induced breakdown spectrum detection device for detecting liquid sample |
| CN109327954A (en) * | 2017-08-01 | 2019-02-12 | 大连理工大学 | A kind of atomization cold-plasma jet generating device |
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Application publication date: 20180626 |