CN203587507U - Small portable heavy metal detection device - Google Patents
Small portable heavy metal detection device Download PDFInfo
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- CN203587507U CN203587507U CN201320669374.3U CN201320669374U CN203587507U CN 203587507 U CN203587507 U CN 203587507U CN 201320669374 U CN201320669374 U CN 201320669374U CN 203587507 U CN203587507 U CN 203587507U
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Abstract
The utility model discloses a small portable heavy metal detection device. The small portable heavy metal detection device comprises a gathering evaporator, a low-temperature plasma exciter and a spectrum detection device, wherein the gathering evaporator comprises a reaction cavity; a sample inlet and a waste liquid outlet are formed in the upper part and the lower part of the reaction cavity respectively; a reaction wire and a reference wire are mounted in the reaction cavity; the reference wire is only connected with a positive electrode of a power supply; two ends of the reaction wire are connected with the positive electrode and a negative electrode of the power supply respectively; the low-temperature plasma exciter comprises an excitation cavity; a viewing window and a waste gas outlet are formed in the top of the excitation cavity; two ends of the excitation cavity are connected with a neon lamp power supply; the lower part of the excitation cavity is connected with the upper part of the reaction cavity; the spectrum detection device comprises a CCD (Charge Coupled Device) spectrograph and an optical fiber probe which are connected with each other; the optical fiber probe is mounted on the viewing window of the excitation cavity; the CCD spectrograph is connected with a computer. The small portable heavy metal detection device is simple in structure, low in cost, small in size, convenient to carry and capable of effectively gathering the heavy metals in the liquid to be detected and performing excitation detection, and capable of realizing on-site analysis of detection data.
Description
Technical field
The utility model relates to a kind of checkout equipment, specifically, is a kind of small-sized heavy metal pick-up unit that can be portable.
Background technology
Existing commercial heavy metal contaminants measuring equipment, mainly based on atomic spectrum technology, Inorganic Mass Spectrometry technology, uv-vis spectra absorption techniques and electrochemical analysis technology.Carry out in the equipment of heavy metal detection: atomic spectrograph and mass spectrometer configuration complexity, expensive height, and sample pretreatment is loaded down with trivial details, and both all cannot realize the on-the site analysis of sample; Although uv-vis spectra absorption process and electrochemical method apparatus structure are simple, with low cost, there is the problems such as the low and poor repeatability of sensitivity for analysis, cannot realize the detection of ultratrace heavy metal composition in liquid phase.
Utility model content
The utility model, for the deficiency of above-mentioned existing checkout equipment, has designed a kind of small-sized heavy metal pick-up unit that can be portable.
Small-sized heavy metal pick-up unit that can be portable of the present utility model, comprise enrichment evaporator, low temperature plasma energizer and spectrum detection device, described enrichment evaporator comprises reaction chamber, reaction chamber upper and lower is respectively equipped with sample inlet and waste liquid outlet, reaction silk and reference silk are installed in reaction chamber, reference silk only connects the positive pole of power supply, and reaction silk two ends connect respectively positive pole and the negative pole of power supply; Described low temperature plasma energizer comprises excitation cavity, and excitation cavity top is provided with view window and waste gas outlet, excitation cavity two termination neon lamp power sources, and excitation cavity bottom is communicated with reaction chamber top; Described spectrum detection device comprises connected CCD spectrometer and fibre-optical probe, and fibre-optical probe is arranged on the view window of excitation cavity, and CCD spectrometer can connect computing machine.
Preferably, heavy metal pick-up unit also comprises the external heat servicing unit that can heat reaction chamber and excitation cavity.
Preferably, described reaction silk is graphite silk or the tinsel made by rare refractory metal, and described reference silk is the tinsel of being made by inert metal.
Preferably, reaction silk is spiral fashion.
Preferably, the power supply that reference silk connects is direct current, and the power supply that reaction silk connects is direct current or alternating current.
Preferably, described excitation cavity is quartz ampoule or ceramic pipe.
The beneficial effects of the utility model are: small-sized heavy metal pick-up unit that can be portable, and simple in structure, cost is low, and volume is little, is easy to carry, and the heavy metal in liquid to be measured can be carried out to effective enrichment and excitation-detection, can realize the on-the site analysis that detects data.
Pick-up unit adopts plating enrichment and electric heating evaporation to carry out heavy metal detection, has improved the introducing efficiency system of sample, thereby has improved the detection sensitivity of equipment.Stable plasma exciatiaon has guaranteed accuracy and the reappearance of systematic survey.
When electroplating enrichment, can, by by setting current potential, realize selective enrichment and the multielement Sync enrichment of heavy metal in liquid to be measured, the mutual spectrum that just can get rid of between component disturbs, and when realizing component, detects.When external heat servicing unit can be dried after equipment enrichment, accelerate rate of drying, remove residual sample, guarantee detection efficiency and accuracy.
Accompanying drawing explanation
Accompanying drawing 1 is the structural drawing of small-sized heavy metal pick-up unit that can be portable.
Embodiment
Small-sized heavy metal pick-up unit that can be portable of the present utility model, comprises enrichment evaporator 1, low temperature plasma energizer 2 and spectrum detection device 3.
Heavy metal pick-up unit carries out heavy metal detection, enrichment evaporator 1 is responsible for by the heavy metal accumulation in testing liquid out, and the instantaneous metal that is heated to be arranges, recycling low temperature plasma energizer 2 generates low temperature plasma, make the low temperature plasma generating excite metallic vapour, produce feature exciting line, then by spectrum detection device 3, receive these feature exciting lines, complete the determination and analysis of heavy metal.
Enrichment evaporator 1 comprises reaction chamber 4, and reaction chamber 4 upper and lowers are respectively equipped with sample inlet 5 and waste liquid outlet 6, and reaction silk 7 and reference silk 8 are installed in reaction chamber 4, and 8 of reference silks connect the positive pole of power supply, and reaction silk 7 two ends connect respectively positive pole and the negative pole of power supply.
Heavy metal in testing liquid need to be enriched on the surface of reaction silk 7, then by reacting silk 7 by instantaneous its surperficial heavy metal metallic vapour that is heated into, reaction silk 7 need to reach that fusing point is high, inertia, requirement that surface area is large, so reaction silk 7 is graphite silk or the tinsel made by rare refractory metal, and is spiral fashion.The normal tungsten filament that adopts of reaction silk 7.
In order to reach the current potential requirement of carrying out enrichment, the power supply that reference silk 8 connects is direct current, and the power supply that reaction silk 7 connects is also direct current.Because reaction silk 7 need to become metallic vapour by heavy metal transient heating, need the voltage of increasing, the power supply that reaction silk 7 connects also can be alternating current.
Low temperature plasma energizer 2 comprises excitation cavity 9, excitation cavity 9 tops are provided with view window 10 and waste gas outlet 11,9 liang of termination neon lamp power sources 12 of excitation cavity, two conductions that neon lamp power source 12 and excitation cavity 9 join, end is all exposed in excitation cavity 9, and excitation cavity 9 bottoms are communicated with reaction chamber 4 tops.
Because needs carry out low temperature plasma in excitation cavity 9, excite, excitation cavity 9 needs high temperature resistant, corrosion-resistant, Heat stability is good, so excitation cavity 9 adopts quartz ampoule or ceramic pipe.
Heavy metal pick-up unit also comprises the external heat servicing unit that can heat reaction chamber 4 and excitation cavity 9.
During concrete use, the testing liquid sample after purifying is sent in reaction chamber 4 by sample inlet 5, fluid sample will not crossed reaction silk 7 and reference silk 8.
Only connect the negative pole of the power supply that is connected with reaction silk 7, connect the power supply being connected with reference silk 8 simultaneously, and keep two power supply potentials constant, make the heavy metal ion constant potential on reaction silk 7 in testing liquid sample electroplate enrichment.
After enrichment completes, the power supply of off-response silk 7 and reference silk 8, discharges waste liquid from waste liquid outlet 6,
For fear of water vapor, affect the DBD launching efficiency of subsequent step, need moisture and sample in removal device residual, can to reaction chamber 4 and excitation cavity 9, heat by external heat servicing unit, accelerate water vapor and the residual evaporative removal of sample.
Then block sample inlet 5, by waste liquid outlet 6, in reaction chamber 4, be filled with gas to be excited, and connect positive pole and the negative pole of the power supply that is connected with reaction silk 7, to reaction silk 7, apply a constant voltage, be enriched in the heavy metal flash evapn on reaction silk 7, form metallic vapour.
The gas to be excited that is charged reaction silk 7 enters excitation cavity 9, and metallic vapour is brought into wherein, connect neon lamp power source 12, neon lamp power source 12 excites the uncertain low temperature plasma of γ-ray emission to be excited in excitation cavity 9, low temperature plasma efficiently excites the metallic vapour passing into wherein, makes metallic vapour send feature exciting line.
Be arranged on fibre-optical probe 14 on the view window 10 of excitation cavity 9 and receive these feature exciting lines, and send it to CCD spectrometer 13, by the Computer Analysis feature exciting line being connected with CCD spectrometer 13, realize the quantitative and qualitative analysis of heavy metal in testing liquid sample.
The gas to be excited that generates low temperature plasma can be inert gas, also can adopt carbon dioxide.At present conventional this inert gas of argon gas is as gas to be excited.
Claims (6)
1. a small-sized heavy metal pick-up unit that can be portable, it is characterized in that, comprise enrichment evaporator (1), low temperature plasma energizer (2) and spectrum detection device (3), described enrichment evaporator (1) comprises reaction chamber (4), reaction chamber (4) upper and lower is respectively equipped with sample inlet (5) and waste liquid outlet (6), reaction silk (7) and reference silk (8) are installed in reaction chamber (4), reference silk (8) only connects the positive pole of power supply, and reaction silk (7) two ends connect respectively positive pole and the negative pole of power supply; Described low temperature plasma energizer (2) comprises excitation cavity (9), excitation cavity (9) top is provided with view window (10) and waste gas outlet (11), excitation cavity (9) two termination neon lamp power sources (12), excitation cavity (9) bottom is communicated with reaction chamber (4) top; Described spectrum detection device (3) comprises connected CCD spectrometer (13) and fibre-optical probe (14), and fibre-optical probe (14) is arranged on the view window of excitation cavity (9), and CCD spectrometer (13) can connect computing machine.
2. small-sized heavy metal pick-up unit that can be portable according to claim 1, is characterized in that, heavy metal pick-up unit also comprises the external heat servicing unit that can heat reaction chamber (4) and excitation cavity (9).
3. small-sized heavy metal pick-up unit that can be portable according to claim 1, is characterized in that, described reaction silk (7) is graphite silk or the tinsel made by rare refractory metal, the tinsel of described reference silk (8) for being made by inert metal.
4. according to the small-sized heavy metal pick-up unit that can be portable described in claim 1 or 3, it is characterized in that, reaction silk (7) is spiral fashion.
5. small-sized heavy metal pick-up unit that can be portable according to claim 1, is characterized in that, the power supply that reference silk (8) connects is direct current, and the power supply that reaction silk (7) connects is direct current or alternating current.
6. small-sized heavy metal pick-up unit that can be portable according to claim 1, is characterized in that, described excitation cavity (9) is quartz ampoule or ceramic pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669374.3U CN203587507U (en) | 2013-10-28 | 2013-10-28 | Small portable heavy metal detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669374.3U CN203587507U (en) | 2013-10-28 | 2013-10-28 | Small portable heavy metal detection device |
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| Publication Number | Publication Date |
|---|---|
| CN203587507U true CN203587507U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320669374.3U Withdrawn - After Issue CN203587507U (en) | 2013-10-28 | 2013-10-28 | Small portable heavy metal detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558207A (en) * | 2013-10-28 | 2014-02-05 | 青岛佳明测控科技股份有限公司 | Small portable heavy metal detection device and detection method |
| CN112051213A (en) * | 2020-08-07 | 2020-12-08 | 北京航空航天大学 | Optical diagnostic probe for measuring local plasma and measuring method thereof |
-
2013
- 2013-10-28 CN CN201320669374.3U patent/CN203587507U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558207A (en) * | 2013-10-28 | 2014-02-05 | 青岛佳明测控科技股份有限公司 | Small portable heavy metal detection device and detection method |
| CN103558207B (en) * | 2013-10-28 | 2016-03-30 | 青岛佳明测控科技股份有限公司 | Small-sized can be portable heavy metal analysis device and detection method |
| CN112051213A (en) * | 2020-08-07 | 2020-12-08 | 北京航空航天大学 | Optical diagnostic probe for measuring local plasma and measuring method thereof |
| CN112051213B (en) * | 2020-08-07 | 2021-11-16 | 北京航空航天大学 | Optical diagnostic probe for measuring local plasma and measuring method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20160330 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |