CN202092945U - Liquid sample introduction device - Google Patents
Liquid sample introduction device Download PDFInfo
- Publication number
- CN202092945U CN202092945U CN2011200710962U CN201120071096U CN202092945U CN 202092945 U CN202092945 U CN 202092945U CN 2011200710962 U CN2011200710962 U CN 2011200710962U CN 201120071096 U CN201120071096 U CN 201120071096U CN 202092945 U CN202092945 U CN 202092945U
- Authority
- CN
- China
- Prior art keywords
- liquid
- sample introduction
- liquid sample
- sampling device
- introduction device
- 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.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title abstract description 23
- 238000005070 sampling Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 15
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000001228 spectrum Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 7
- 238000002536 laser-induced breakdown spectroscopy Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000009616 inductively coupled plasma Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 101000694017 Homo sapiens Sodium channel protein type 5 subunit alpha Proteins 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004454 trace mineral analysis Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model belongs to the technical field of sample introduction for spectrum detection and particularly relates to a liquid sample introduction device matched with a solution element content detecting device. The liquid sample introduction device is characterized by comprising a drip connected with a sample cell through a connecting tube. The liquid sample introduction device matched with the solution element content detecting device is simple in structure, easy in operation, lower in cost and finer in practicality.
Description
Technical field
The utility model belongs to spectral detection sampling technique field, specifically is the supporting fluid sample sampling device of constituent content pick-up unit in a kind of solution.
Background technology
Highly sensitive detection to toxic heavy metal element content in the water is the emphasis that people pay close attention to for a long time always.Heavy Metal Pollution in Water Environment is monitored used technology at present atomic absorption spectroscopy (AAS), inductively coupled plasma atomic emission (ICP/AES) and analytical technique of mass spectrum (ICP/MS), electrochemical analysis and biological monitoring etc.
(Laser-Induced Breakdown Spectroscopy's Laser-induced Breakdown Spectroscopy technology LIBS) receives much concern because of advantages such as it has fast, real-time analysiss.This technology adopts the laser excitation plasma, and detects the wherein content and the concentration of element by record analysis laser plasma emission spectrum mode, and it is applied to fields such as Shui ﹑ soil and air pollution monitoring more and more widely at present.Utilize LIBS that fluid sample is carried out trace analysis and also be in the laboratory study stage on the whole, utilize the LIBS technology at present, mainly contain two kinds of sample breakdown modes, i.e. liquid surface and liquid internal the research that constituent content in the solution detects.Because the spectrum life-span of the liquid surface puncture LIBS that obtains and intensity all are greater than and puncture in liquid, have higher detectability, research in recent years adopts liquid surface to puncture mode mostly.The puncture of liquid level can be divided into standby fluid level and two kinds of sampling patterns of liquid jet again.
As shown in Figure 1, LASER Light Source adopts Q-switched laser in the spray pattern, laser beam line focus lens impinge perpendicularly on the fluid column surface, and the plasma resonance light of generation is coupled in the optical fiber through quartz lens, and the spectrum after the beam split is gathered the back by ICCD and shown by computer output.Flowing of liquid controlled by peristaltic pump.The pattern of standby fluid level is shown in Fig. 2, and other are the same with Fig. 1, and difference is laser beam after lens focus, vertically incides liquid surface, and liquid is placed among the glass container, so liquid surface is static.The plasma resonance light that produces arrives optical fiber, lens and liquid level angle at 45 through Lens Coupling.Splashing of spray is little, the advantages such as real-time sampling of sample because spray pattern has, and is more suitable in industrial rig-site utilization.
But the instrument that above these Heavy Metal Pollution in Water Environment monitoring technology have costs an arm and a leg, and the operating cost height is not portable; The sample pretreatment program complexity that has; What have can not carry out many components or multielement analysis.
Summary of the invention
The utility model is the supporting fluid sample sampling device of constituent content pick-up unit in a kind of solution, and this apparatus structure is simple, easy operating, and cost is lower, and good practicability is arranged.
Concrete technology path of the present utility model is:
A kind of liquid sampling device is characterized in that this sampling device comprises a liquid-drop machine, and this liquid-drop machine links to each other with sample cell by connecting pipe.
Described connecting pipe includes flow control switch.
Described liquid-drop machine is the syringe needle that links to each other with connecting pipe.
The constituent content pick-up unit is made up of a high voltage discharge circuit, a cover fluid sample sampling device and a cover spectral detection system in a kind of solution, described high voltage discharge circuit comprises the discharger of being made up of two sparking electrodes, and described liquid sample introduction is that the liquid-drop machine that device includes makes fluid sample periodically by center, discharger sparking electrode gap.
For keeping discharge stability, the fluid sample liquid-drop diameter that described liquid-drop machine end is emitted is not more than 1mm.
The utility model has compared with prior art that detection method is easy, equipment is simple, and is easy to use, the characteristics that can under atmospheric pressure work.
The utility model is particularly useful for high pressure from triggering fast pulse discharge plasma spectrographic technique, can detect heavy metal element in the liquid easily, and spectral signal has good stability, and this method has potential important use and is worth in the water body weight metallic element of reality detects.
Description of drawings
Fig. 1 is the structural representation of liquid jet sample detecting device.
Fig. 2 is the structural representation of standby fluid level sample detecting device.
Fig. 3 is that the utility model high pressure is from triggering fast pulse plasma discharging spectrum detection device structural representation.
Embodiment
1-3 is further described the utility model below in conjunction with accompanying drawing.
A kind of liquid sampling device, this sampling device comprise a liquid-drop machine, and this liquid-drop machine links to each other with sample cell by connecting pipe.
Described connecting pipe includes flow control switch.
The liquid-drop machine of sampling device adopts hospital to beat the syringe that transfusion bottle is used, syringe needle be fixed on two electrode gap centers directly over.In the sample cell that fluid sample is placed on syringe links to each other during work, regulate syringe flow gauge tap, water droplet drips from needle point, and falls in the following container by the electrode gap center, adjusts the liquid dropleting speed and exceeds so that continuous discharge not to take place; When drop passed electrode central, trigger electrode discharge automatically excited the liquid by electrode central authorities, forms discharge plasma.And the electric energy in the electric capacity deposited in the discharge plasma, form puncture the discharge plasma spectrum of drop.Because about 800ns time of whole discharge pulse duration, the drop distance that vertical direction moves between electrode is compared and can be ignored with the electrode yardstick less than 1 micron in this time.
The light that plasma sends is collected and is transferred to spectrometer by optical fiber, the radiant light that utilizes photodiode to accept plasma simultaneously forms a start pulse signal and comes triggered digital pulse daley generator to open spectrometer record experimental data.
Spectrometer is sent experimental data into computing machine and is handled and analyze.
Claims (3)
1. a fluid sample sampling device is characterized in that this sampling device comprises a vertically disposed liquid-drop machine, and this liquid-drop machine links to each other with sample cell by connecting pipe.
2. fluid sample sampling device according to claim 1 is characterized in that described connecting pipe includes flow control switch.
3. fluid sample sampling device according to claim 1 and 2 is characterized in that the syringe needle of described liquid-drop machine for linking to each other with connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200710962U CN202092945U (en) | 2011-03-17 | 2011-03-17 | Liquid sample introduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200710962U CN202092945U (en) | 2011-03-17 | 2011-03-17 | Liquid sample introduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202092945U true CN202092945U (en) | 2011-12-28 |
Family
ID=45368006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200710962U Expired - Fee Related CN202092945U (en) | 2011-03-17 | 2011-03-17 | Liquid sample introduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202092945U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568902A (en) * | 2014-12-31 | 2015-04-29 | 苏州优谱德精密仪器科技有限公司 | Wine liquid detection device |
| CN105067593A (en) * | 2015-07-10 | 2015-11-18 | 长春理工大学 | Electrostatic assistance enhanced LIBS (laser induced breakdown spectroscopy) device for detecting heavy metal elements in sewage |
| CN108204966A (en) * | 2018-01-08 | 2018-06-26 | 青海师范大学 | A kind of plasma jet device available for element in spectral detection liquid |
| WO2022062118A1 (en) * | 2020-09-22 | 2022-03-31 | 青岛大学 | Device and method for online detection of elements in liquid sample |
-
2011
- 2011-03-17 CN CN2011200710962U patent/CN202092945U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568902A (en) * | 2014-12-31 | 2015-04-29 | 苏州优谱德精密仪器科技有限公司 | Wine liquid detection device |
| CN104568902B (en) * | 2014-12-31 | 2017-02-22 | 苏州优谱德精密仪器科技有限公司 | Wine liquid detection device |
| CN105067593A (en) * | 2015-07-10 | 2015-11-18 | 长春理工大学 | Electrostatic assistance enhanced LIBS (laser induced breakdown spectroscopy) device for detecting heavy metal elements in sewage |
| CN108204966A (en) * | 2018-01-08 | 2018-06-26 | 青海师范大学 | A kind of plasma jet device available for element in spectral detection liquid |
| WO2022062118A1 (en) * | 2020-09-22 | 2022-03-31 | 青岛大学 | Device and method for online detection of elements in liquid sample |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102183508B (en) | Detecting device and method for contents of elements in solution | |
| CN107917901B (en) | Method and device for online detection of element components of liquid sample | |
| CN104237178B (en) | The method and apparatus of trace metal element in direct-current discharge vaporization auxiliary laser induced breakdown spectroscopy detection water body | |
| CN102288594B (en) | Water body metallic element real-time online optical measuring device and measuring method | |
| CN103712962B (en) | A kind of laser microprobe analysis instrument based on aerosolization and resonance excitation | |
| CN202092945U (en) | Liquid sample introduction device | |
| CN104502330B (en) | A kind of LIBS detection means for detecting fluid sample | |
| He et al. | Flowing and nonflowing liquid electrode discharge microplasma for metal ion detection by optical emission spectrometry | |
| CN106568833B (en) | A kind of liquid cathode glow discharge optical emission spectrometry device and method for heavy metal analysis | |
| CN103884689B (en) | A kind of induced with laser list drop punctures the method and apparatus of detection | |
| CN103969244A (en) | Portable element spectrometer for online detecting liquid sample | |
| US10705023B2 (en) | Solution cathode glow discharge plasma-atomic emission spectrum apparatus and method capable of performing direct gas sample introduction and used for detecting heavy metal element | |
| CN105067593A (en) | Electrostatic assistance enhanced LIBS (laser induced breakdown spectroscopy) device for detecting heavy metal elements in sewage | |
| CN103698255A (en) | Real-time analytic method for atmospheric particle source | |
| CN101696936A (en) | Laser induced discharge reinforcement plasma spectrum detection device | |
| CN101788487A (en) | Method and device for detecting liquid sample by using ultrasonic atomization and breakdown spectroscopy | |
| CN105004709A (en) | Liquid discharge micro-plasma excitation source apparatus and plasma excitation method | |
| CN201177613Y (en) | Sea water heavy metal pollutant on site analyzer | |
| CN203758914U (en) | Laser probe analyzer based on gas atomization and resonance excitation | |
| CN111912831B (en) | Underwater spectrum detection device and method | |
| CN101865829A (en) | Novel device for generation and detection of photochemical catalysis and implementing method thereof | |
| CN107561050A (en) | Portable low-temp plasma automic fluorescence surveys arsenic analytical equipment | |
| CN102834708A (en) | Elementary analysis device and method | |
| CN105651760A (en) | Microplasma apparatus suitable for metallic element analysis in gas | |
| Ng et al. | Detection of sodium and potassium in single human red blood cells by 193-nm laser ablative sampling: a feasibility demonstration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20130317 |