CN201765146U - Mercury enrichment device of mercury detector - Google Patents
Mercury enrichment device of mercury detector Download PDFInfo
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- CN201765146U CN201765146U CN2010202354597U CN201020235459U CN201765146U CN 201765146 U CN201765146 U CN 201765146U CN 2010202354597 U CN2010202354597 U CN 2010202354597U CN 201020235459 U CN201020235459 U CN 201020235459U CN 201765146 U CN201765146 U CN 201765146U
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- mercury
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- enriching
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Abstract
A mercury enrichment device of a mercury detector is characterized in that a gap (4) is reserved between an outer pipe (3) and an inner pipe (6). A mercury enriching layer (5) with a crisscross nick (11) covers the outer surface of the inner pipe, a heating bar extends into the inner pipe (6), an air inlet (1) and an air outlet (7) are arranged on the outer pipe (3), the mercury enriching layer is a gold plating layer, and the nick divides the mercury enriching layer into a continuous crisscross shape to form a resistor. The mercury enrichment device is mainly used inside a mercury tester of the atomic spectrum category and a gold film mercury analyzer for enriching mercury in gaseous samples and releasing and controlling flow direction of enriched mercury, maintains the function of mercury enrichment of a traditional device, also optimizes storage state of absorbing gold inside the enrichment device, has the advantages of fine consistency, stability and sensibility and easy assembly and maintenance, and can further perform enrichment and measurement by converting solid and liquid samples into mercury containing gases by methods of thermal decomposition and reduction.
Description
Technical field
The utility model relates to and a kind of gaseous mercury is captured mercury enriching apparatus with the instrument for determining Hg of enrichment.
Background technology
Mercury (Hg) directly affects the physical environment and the daily life of human survival as a kind of high-risk harmful element, so to the detection of mercury content in the object with to the detection of mercury pollution and administer and also come into one's own day by day.Generally, mercury is that the form with the organic or inorganic compound is present in occurring in nature, and its sample form can be liquid, solid-state or gaseous state.For the detection of mercury, the general method that adopts is to be mercury sample form according to different, adopts corresponding sample-pretreating method, and it is the mercury vapour (Hg of atomic state that organic mercury contained in the sample or inorganic mercury are transformed (or reduction)
0), be introduced into detecting device then, and total mercury content is detected.At present, main instrument for determining Hg has atomic spectrum mercury vapor analyzer and gold film mercury detector, wherein the detection principle of atomic spectrum quasi-instrument is: absorb (or under the 253.7nm radiant rays according to the wavelength 253.7nm radiant rays selectivity of ground state mercury atom to mercury lamp emission, the ground state mercury atom is launched characteristic fluorescence) degree, it is carried out quantitative measurement; And the principle of work of gold film mercury detector is: based on metalized film resistor absorption mercury atom after, its resistivity changes, variation according to this resistance increment, by detecting bridge circuit its variation is detected, when testing conditions one timing, the resistance increment that is produced behind the golden film absorption mercury vapour is directly proportional with its concentration.
Along with the raising that mercury is detected the requirement of lower limit, when carrying out the mensuration of trace and ultratrace mercury, adopt original instrument and analytical technology can't meet the demands, in order to obtain desirable testing result, just must carry out preenrichment to mercury contained in the sample, what adopt usually is a kind of noble metal-preenrichment method that is called, its principle is: the course of reaction that can generate amalgam according to mercury and gold after contacting, adopt a device, Trace Mercury in the air is carried out enrichment, at high temperature quantitatively discharge the mercury of atomic state then, and be imported into instrument for determining Hg and carry out detection by quantitative, because contained mercury has obtained preenrichment in the sample, so improved the detection lower limit of mercury, make people become possibility to the detection of trace and ultratrace mercury, the beneficiation technologies of this mercury is applied in the instrument for determining Hg.
Because the present formed gold amalgam enriching apparatus of technology, the spun golds that adopt on the shape of ADSORPTION OF GOLD and PROCESS FOR TREATMENT more, the spun gold net, spun gold ball and gold-plated glass bead, technologies such as gold-plated silica sand, only can accomplish to be required on matter (weight) amount at gold and the basic configuration and control, and gold bowing in enriching apparatus deposited state, contact area with gaseous sample, the contact volume, a plurality of principal elements that influence the mercury bioaccumulation efficiency such as the path of gaseous sample and airshed in the device, can't accomplish accurate control, it is bigger that made gold amalgam enriching apparatus exists otherness, consistance is bad, sensitivity differs, assemble difficult in maintenancely, it is big that the instrument for determining Hg of being formed also exists the calibration operation amount, problems such as drift easily take place in instrument zero.
Summary of the invention
The utility model is exactly in order to overcome the deficiencies in the prior art, and provides a kind of degree of accuracy good, and is highly sensitive, can satisfy the mercury enriching apparatus that trace and ultratrace mercury detect the instrument for determining Hg of needs.
Technical solution of the present utility model is:
The mercury enriching apparatus of this instrument for determining Hg mainly is to leave the space between outer tube and the interior pipe, and the outside surface of described interior pipe coats the mercury enriched layer with back-shaped indentation, in the pipe, is provided with air intake opening and gas outlet on described outer tube in heating rod stretches into.
Described mercury enriched layer is a Gold plated Layer, indentation with the mercury enriched layer be divided into one continuous back-shaped and become a resistor.
The end of described outer tube and interior pipe has end cap, exposes end cap with mercury enriched layer two ends lead-in wire that is connected and the joint that is connected with well heater and is connected with the mercury detecting instrument.
The good effect that the utility model produced is: this mercury enriching apparatus is mainly used in atomic spectrum class instrument for determining Hg, and in the golden film mercury analyzer device, in order to the mercury in the gaseous sample is carried out enrichment, and the mercury after the enrichment discharged and flows to control, in order to the sensitivity for analysis of raising instrument.The related mercury enriching apparatus of the utility model is when having kept the function of conventional apparatus to the mercury enrichment, depositing state for ADSORPTION OF GOLD bowing in enriching apparatus optimizes, guaranteed that the mercury enriching apparatus that is proposed has good consistance, stability and sensitivity, and assembled, safeguard easily.Compare with original technology, the utility model can be used as a kind of mercury enrichment chemical sensor, combine with atomic spectroscopic analysis technology and detection technique, content to mercury in all kinds of samples is measured, can also be as a kind of variable-resistance transducer, combine with detecting bridge circuit and signal processing unit, form gold film mercury detector, with realize in the sample mercurous content measure.Thereby solid and the fluid sample method by pyrolysis and reduction can also be converted into and contain mercury gas and carry out enrichment and measurement.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the expansion synoptic diagram of mercury enriched layer among Fig. 1.
Fig. 3 is the A-A cut-open view of Fig. 1.
Embodiment
As Fig. 1, shown in Figure 3, outer tube 3 of the present utility model is a cylinder-like structure, is provided with the air intake opening 1 that connects with outer tube 3 in the front portion of outer tube 3, and the afterbody of outer tube 3 is provided with the gas outlet 7 that connects with outer tube 3; The interior pipe 6 of a cylinder-like structure extend in the outer tube 3 and with outer tube 3 concentric settings, leave space 4 between outer tube 3 and the interior pipe, the tail end of outer tube 3 and interior pipe 6 is sealed fully by end cap 8.Form one deck mercury enriched layer 5 by method gold-plated or that apply on the outside surface of interior pipe 6, this mercury enriched layer 5 is divided into a continuous jatharapanvartanasana and is become a resistor (referring to Fig. 2) by indentation 11.Mercury enriched layer 5 preferably adopts 99.99% high-purity gold, and its thickness is 0.02-0.05mm.Also be provided with a heating rod 2 in interior pipe 6, this heating rod 2 can be with resistance heater or electric ceramic well heater, in order to internal pipe 6 and 5 heating of mercury enriched layer.The lead-in wire 9 that mercury enriched layer 5 connects by two ends exposes end cap 8 and is connected with the mercury detecting instrument, and the joint 10 that is connected with well heater 2 also exposes end cap 8 and is connected with Temperature-controlled appliance.
Said outer tube 3 is by quartz glass, and perhaps by corrosion-resistant, refractory ceramics, perhaps engineering plastics are made.
During actual the use, air intake opening 1 is connected with the gaseous sample acquisition system by conduit, and gas outlet 7 directly or by conduit is connected with gas circuit guiding multiport valve, this moment, gas circuit guiding multiport valve should be adjusted to " sampling " state, at regular time and quantity gaseous sample was sampled then.Mercury is adsorbed by mercury enriched layer 5 after the sample gas of mercurous (Hg) is flowed through mercury enriched layer 5 surfaces, and not mercurous portion gas is discharged then through gas circuit guiding multiport valve.When timing reaches, the gas circuit multiport valve that leads is adjusted to " measurement " state, give heating rod 2 energising heating by temperature controller, make the mercury that is adsorbed carry out heat and discharge, the mercury vapour that is discharged enters into detection system under the effect of carrier gas (adopting the Ar argon gas usually) measuring cell carries out quantitative measurment to the concentration of mercury.
For the measurement of mercury in the solid sample, can sample be converted into by pyrolysis oven and contain mercury gas and enter this device and carry out enrichment and then measurement; Method that also can be by reduction is converted into liquid sample and contains mercury gas and enter this device and carry out enrichment and then measurement.
Claims (3)
1. the mercury enriching apparatus of an instrument for determining Hg, it is characterized in that leaving space (4) between outer tube (3) and the interior pipe (6), the outside surface of pipe (6) coats the mercury enriched layer (5) with back-shaped indentation (11) in described, heating rod (2) stretches in the interior pipe (5), is provided with air intake opening (1) and gas outlet (7) on described outer tube (3).
2. the mercury enriching apparatus of instrument for determining Hg according to claim 1 is characterized in that described mercury enriched layer (5) is a Gold plated Layer, and indentation (11) is divided into mercury enriched layer (5) a continuous jatharapanvartanasana and becomes a resistor.
3. the mercury enriching apparatus of instrument for determining Hg according to claim 1, the end that it is characterized in that described outer tube (3) and interior pipe (6) has end cap (8), and the lead-in wire (9) that is connected with mercury enriched layer (5) two ends exposes end cap (8) with the joint (10) that is connected with well heater (2) and is connected with the mercury detecting instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202354597U CN201765146U (en) | 2010-06-24 | 2010-06-24 | Mercury enrichment device of mercury detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202354597U CN201765146U (en) | 2010-06-24 | 2010-06-24 | Mercury enrichment device of mercury detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765146U true CN201765146U (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202354597U Expired - Lifetime CN201765146U (en) | 2010-06-24 | 2010-06-24 | Mercury enrichment device of mercury detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN201765146U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749018A (en) * | 2015-04-15 | 2015-07-01 | 武汉上谱分析科技有限责任公司 | On-line mercury removing device for laser corrosion signal |
| CN107389387A (en) * | 2017-06-26 | 2017-11-24 | 杭州超距科技有限公司 | Portable trace mercury analyzer |
| CN109142017A (en) * | 2018-09-12 | 2019-01-04 | 河南理工大学 | Separation, collecting device and the method for mercury in a kind of crude oil |
| CN110694582A (en) * | 2019-10-22 | 2020-01-17 | 中南大学 | Mercury enrichment material for mercury detector, preparation method and application |
| CN112326573A (en) * | 2020-11-03 | 2021-02-05 | 广西中检食品检测有限公司 | Method for rapidly determining mercury content in seasoning by direct mercury detector |
| CN113155812A (en) * | 2021-03-13 | 2021-07-23 | 竑迈环境科技(上海)有限公司 | Mercury detection and analysis device |
-
2010
- 2010-06-24 CN CN2010202354597U patent/CN201765146U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749018A (en) * | 2015-04-15 | 2015-07-01 | 武汉上谱分析科技有限责任公司 | On-line mercury removing device for laser corrosion signal |
| CN104749018B (en) * | 2015-04-15 | 2017-05-31 | 武汉上谱分析科技有限责任公司 | A kind of laser ablation signal removes mercury device online |
| CN107389387A (en) * | 2017-06-26 | 2017-11-24 | 杭州超距科技有限公司 | Portable trace mercury analyzer |
| CN107389387B (en) * | 2017-06-26 | 2019-12-31 | 杭州超钜科技有限公司 | Portable trace mercury analyzer |
| CN109142017A (en) * | 2018-09-12 | 2019-01-04 | 河南理工大学 | Separation, collecting device and the method for mercury in a kind of crude oil |
| CN109142017B (en) * | 2018-09-12 | 2023-09-12 | 河南理工大学 | Equipment and method for separating and collecting mercury in crude oil |
| CN110694582A (en) * | 2019-10-22 | 2020-01-17 | 中南大学 | Mercury enrichment material for mercury detector, preparation method and application |
| CN110694582B (en) * | 2019-10-22 | 2020-12-01 | 中南大学 | Mercury enrichment material for mercury detector, preparation method and application |
| CN112326573A (en) * | 2020-11-03 | 2021-02-05 | 广西中检食品检测有限公司 | Method for rapidly determining mercury content in seasoning by direct mercury detector |
| CN112326573B (en) * | 2020-11-03 | 2024-03-08 | 广西中检食品检测有限公司 | Method for rapidly measuring mercury content in seasoning by direct mercury meter |
| CN113155812A (en) * | 2021-03-13 | 2021-07-23 | 竑迈环境科技(上海)有限公司 | Mercury detection and analysis device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |