CN206312866U - The mercury vapour sampling device of standard substance and sample branch sample introduction - Google Patents
The mercury vapour sampling device of standard substance and sample branch sample introduction Download PDFInfo
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- CN206312866U CN206312866U CN201621466284.4U CN201621466284U CN206312866U CN 206312866 U CN206312866 U CN 206312866U CN 201621466284 U CN201621466284 U CN 201621466284U CN 206312866 U CN206312866 U CN 206312866U
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- peristaltic pump
- way valve
- standard substance
- sample
- outlet
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Abstract
The utility model is related to the mercury vapour sampling device of a kind of standard substance and sample branch sample introduction, the first peristaltic pump and the second peristaltic pump including being respectively used to drive reducing agent and standard substance and waste liquid, and for driving the syringe pump and gas-liquid separator of sample, the entrance of first peristaltic pump is connected with the first container tank equipped with reducing agent, the outlet of the first peristaltic pump is connected through a water influent pipeline with gas-liquid separator, the entrance of second peristaltic pump is connected with the second container tank equipped with standard substance, the outlet of the second peristaltic pump is connected through the first two-position three-way valve and the second two-position three-way valve with water influent pipeline successively, sample liquid is equipped with the syringe pump, and the outlet of the syringe pump is connected through the second two-position three-way valve with the water influent pipeline；The gaseous phase outlet of the gas-liquid separator is connected with MC ICP/MS analyzers.The beneficial effects of the utility model are：The difference sample introduction of standard substance and sample is realized, scavenging period is effectively saved with syringe pump.
Description
Technical field
The utility model is related to cold atom mercury vapour gas-liquid separation field, more particularly to a kind of standard substance and sample branch
The mercury vapour sampling device of sample introduction.
Background technology
The sampling device of cold atom mercury vapour gas-liquid separation is as multiple-collector plasma source mass spectrometry（MC-ICP/MS）Survey
Determine sampling device during mercury stable isotope, it is typically by gas-liquid separation unit, gas piping, liquid line and hydrodynamic pump
Composition.During work, mercurous sample solution fully reacts after converging through threeway with reductant solution in mixed pipe line, by divalence
Mercury ion is reduced into Elemental Mercury；Mixed liquor enters gas phase into being separated from liquid phase with high-purity carrier gas after gas-liquid separation unit
Feeding MC-ICP/MS is detected.
In the prior art typically by the use of straight tube gas-liquid separator and peristaltic pump as gas-liquid separation unit and hydrodynamic pump.
After being flowed into by gas-liquid separator top-side after the blended pipeline mixing of stoste, Elemental Mercury therein is by logical from gas-liquid separator
The high-purity argon gas of bottom sides enter gas phase from liquid phase purging, and MC-ICP/MS is entered by blowout directly over gas-liquid separator top
Detected；Waste liquid is then from bottom discharge immediately below gas-liquid separator.According to the job requirement of MC-ICP/MS, cold atom mercury steams
The step of operating parameter of the sampling device of gas gas-liquid separation needs matched, sampling device is specifically performed have rinse, sample introduction,
Clean, vary four steps, operation switching is and carries out manually（Design parameter refers to table 1）.
The sampling device job step of the cold atom mercury vapour gas-liquid separation of table 1
Each sample completes sample introduction and determines time-consuming 860 s, wherein the detection time of 600 s.Gas when sampling device works
Rate of flow of fluid is 40 mL/min, and fluid sample is 1.0 mL/min with reducing agent sample introduction flow velocity, and discharging of waste liquid flow velocity is 2.0
mL/min。
During standard substance replaces measure with sample, it is necessary to elapsed time and reagent overall stream is carried out cleaning and
Rinse, especially peristaltic pump tube can occur inner wall abrasion with the increase of use time so that residual material thereon more comes
More it is difficult to elute.In the later stage of analysis test, the time that cleaning and rinse are spent is even more than the time of analysis sample introduction.Herein
During it is a large amount of have be likely to compared with the autophage of highly acidity reagent and can cause corrosion to accurate MC-ICP/MS.
The content of the invention
The purpose of this utility model is directed to above weak point, there is provided a kind of standard substance and sample branch sample introduction
Mercury vapour sampling device, can effectively reduce the pipeline-cleaning time with reagent consumption.
The utility model solves the scheme that is used of technical problem:A kind of mercury of standard substance and sample branch sample introduction
Steam sampling device, including it is respectively used to drive first peristaltic pump and the second peristaltic pump of reducing agent and standard substance and waste liquid,
And for driving the syringe pump and gas-liquid separator of sample, the entrance of first peristaltic pump and the first appearance equipped with reducing agent
Device tank is connected, and the outlet of the first peristaltic pump is connected through a water influent pipeline with gas-liquid separator, the entrance of second peristaltic pump
It is connected with the second container tank equipped with standard substance, the outlet of the second peristaltic pump is successively through the first two-position three-way valve and second liang
Position three-way valve is connected with water influent pipeline, is equipped with sample liquid in the syringe pump, and the syringe pump outlet through second
Two-position three-way valve is connected with the water influent pipeline；The gaseous phase outlet of the gas-liquid separator is connected with MC-ICP/MS analyzers
It is logical.
Further, a mouthfuls in first two-position three-way valve is connected with the outlet of the second peristaltic pump, the first two three
B in port valve is connected with b in the second two-position three-way valve, and c of the first two-position three-way valve through a liquid back pipe Lu Yu
Two container tanks are connected；The outlet that the c of the second two-position three-way valve is located at syringe pump is connected, a mouthful of the second two-position three-way valve and
Water influent pipeline is connected.
Further, also including the 3rd peristaltic pump for being used to drive waste liquid, the entrance of the 3rd peristaltic pump is useless through one
Liquid pipeline is connected with the waste liquid outlet of gas-liquid separator, and the outlet of the 3rd peristaltic pump is connected through a recovery flexible pipe with waste liquid barrel
It is logical.
Further, first peristaltic pump, the second peristaltic pump, the 3rd peristaltic pump, the first two-position three-way valve and second liang
Position three-way valve is electrically connected with a MCU control unit.
Further, the bottom of the gas-liquid separator also connects an argon gas source.
Further, the reducing agent is Reduction with Stannous Chloride agent, and the standard substance is NIST3133 mercury solutions.
Compared with prior art, the utility model has following beneficial effect：Realize entering respectively for standard substance and sample
Sample.Existing peristaltic pump is replaced to effectively prevent the residual because of sample in pump line with syringe pump, when resulting in the need for spending a large amount of
Between the problem cleaned to the peristaltic pump tube by sample with reagent.Standard substance is in the second fluid reservoir during other sample introduction
Circulation can ensure the ingredient stability of the second fluid reservoir Plays material, effectively prevent from being likely to occur because standard specimen stands for a long time
Isotope slight quality fractionation phenomenon, eliminate cleaning rinse the step of, operating process is simplified, when having saved analysis
Between.
Using MCU control unit be used to controlling first peristaltic pump, the second peristaltic pump, the 3rd peristaltic pump, the first two
Triple valve and the second two-position three-way valve, compared with prior art, have saved manually-operated cumbersome, improve the accurate of operation
Property, there is obvious advantage in the case of continuous analysis.
Brief description of the drawings
The utility model patent is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the sampling device of the utility model embodiment.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
As shown in figure 1, the mercury vapour sampling device of a kind of standard substance of the present embodiment and sample branch sample introduction, including point
First peristaltic pump and the second peristaltic pump of reducing agent and standard substance and waste liquid Yong Yu not be driven, and for driving the note of sample
Pump and gas-liquid separator are penetrated, the entrance of first peristaltic pump is connected with the first container tank equipped with reducing agent, the first peristaltic pump
Outlet be connected with gas-liquid separator through a water influent pipeline, the entrance of second peristaltic pump with equipped with standard substance second
Container tank is connected, and the outlet of the second peristaltic pump is successively through the first two-position three-way valve and the second two-position three-way valve and water influent pipeline phase
Connection, is equipped with sample liquid in the syringe pump, and the syringe pump outlet through the second two-position three-way valve and the feed liquor
Pipeline is connected；The gaseous phase outlet of the gas-liquid separator is connected with MC-ICP/MS analyzers.
From the foregoing, the beneficial effects of the utility model are：By the first two-position three-way valve and the second two-bit triplet
Valve realizes the difference sample introduction of standard substance and sample, simplifies operating process, reduces the working time.
In the present embodiment, a mouthfuls in first two-position three-way valve is connected with the outlet of the second peristaltic pump, first liang
B in position three-way valve is connected with b in the second two-position three-way valve, and c of the first two-position three-way valve through a liquid back pipe road
It is connected with second container tank；The outlet that the c of the second two-position three-way valve is located at syringe pump is connected, a of the second two-position three-way valve
Mouth is connected with water influent pipeline.
In the present embodiment, also including the 3rd peristaltic pump for being used to drive waste liquid, the entrance warp of the 3rd peristaltic pump
One waste-solution line is connected with the waste liquid outlet of gas-liquid separator, and the outlet of the 3rd peristaltic pump reclaims flexible pipe and waste liquid barrel phase through one
Connection.The water influent pipeline, liquid back pipe road, waste-solution line and recovery flexible pipe use the corrosion-resistant materials of PFA or PTFE, equally
The first two-position three-way valve and the second two-position three-way valve be also adopted by corrosion-resistant material.
In the present embodiment, first peristaltic pump, the second peristaltic pump, the 3rd peristaltic pump, the first two-position three-way valve and
Two two-position three-way valves are electrically connected with a MCU control unit.
In the present embodiment, the bottom of the gas-liquid separator also connects an argon gas source.
In the present embodiment, the reducing agent is Reduction with Stannous Chloride agent, and the standard substance is NIST3133 mercury solutions.Under
Face is further explained explanation by the specific implementation process of the present embodiment to the utility model.
As shown in figure 1, wherein P1, P2 and P3 represent the first peristaltic pump, the second peristaltic pump and the 3rd peristaltic pump respectively, work
When, P1, P2 and P3 are respectively through MCU control unit control with the constant-pressure pump of 1.0 mL/min, 1.0 mL/min and 2.0 mL/min
Flow velocity continuous firing.During standard substance sample introduction, a and b of the first two-position three-way valve, a and b of the second two-position three-way valve is even
Logical, now NIST3133 pump liquids are mixed into the purging that gas-liquid separator realizes mercury with Reduction with Stannous Chloride agent in water influent pipeline
And send into MC-ICP/MS analysis-e/or determinings by the purging high-purity argon gas of 40 mL/min.In this step, syringe pump is carried out manually
Cleaning rinse and wherein sample more change jobs.During sample feeding, a and c of the first two-position three-way valve, the second two-bit triplet
A and c of valve is connected, and now sample is pushed water influent pipeline and Reduction with Stannous Chloride agent by syringe pump with the flow velocity of 1.0 mL/min
Gas-liquid separator is mixed into, standard substance NIST3133 mercury solutions then self are circulated with the flow velocity of 1.0 mL/min.Alternately
Two above pattern is achieved that standard substance and sample independence sample introduction process.Specific job step is shown in Table 2.
The mercury vapour sampling device job step of the standard substance of table 2 and sample branch sample introduction
It should be noted that because the residual phenomena of reagent is mainly deposited in peristaltic pump tube and injection pump chamber, in flowing
Under state in other pipelines and gas-liquid separator almost without the residual of preceding liquid, therefore device nothing under existing condition of work
The step of pipeline-cleaning need to being set, the total time-consuming of unitary determination is 10 min.
In sum, the utility model is provided a kind of standard substance and the mercury vapour sampling device of sample branch sample introduction,
Simple structure, it is easy to operate, improve operating efficiency.
Above-listed preferred embodiment, is further described to the purpose of this utility model, technical scheme and advantage,
Should be understood that and the foregoing is only preferred embodiment of the present utility model, be not used to limit the utility model, it is all
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc. should be included in this practicality
Within new protection domain.
Claims (6)
1. the mercury vapour sampling device of a kind of standard substance and sample branch sample introduction, it is characterised in that：Including being respectively used to drive
First peristaltic pump and the second peristaltic pump of reducing agent and standard substance and waste liquid, and for driving the syringe pump and gas-liquid of sample
Separator, the entrance of first peristaltic pump is connected with the first container tank equipped with reducing agent, and the outlet of the first peristaltic pump is through one
Water influent pipeline is connected with gas-liquid separator, and the entrance of second peristaltic pump is connected with the second container tank equipped with standard substance
Logical, the outlet of the second peristaltic pump is connected through the first two-position three-way valve and the second two-position three-way valve with water influent pipeline successively, described
Sample liquid is equipped with syringe pump, and the outlet of the syringe pump is connected through the second two-position three-way valve with the water influent pipeline
It is logical；The gaseous phase outlet of the gas-liquid separator is connected with MC-ICP/MS analyzers.
2. the mercury vapour sampling device of standard substance according to claim 1 and sample branch sample introduction, it is characterised in that：Institute
State a in the first two-position three-way valve mouthfuls to be connected with the outlet of the second peristaltic pump, the b in the first two-position three-way valve and second liang
B in position three-way valve is connected, and c of the first two-position three-way valve is connected through a liquid back pipe road with second container tank；Second
The outlet that the c of two-position three-way valve is located at syringe pump is connected, and a mouthfuls of the second two-position three-way valve is connected with water influent pipeline.
3. the mercury vapour sampling device of standard substance according to claim 1 and sample branch sample introduction, it is characterised in that：Also
Including the 3rd peristaltic pump for being used to drive waste liquid, the entrance of the 3rd peristaltic pump is through a waste-solution line and gas-liquid separator
Waste liquid outlet is connected, and the outlet of the 3rd peristaltic pump is connected through a recovery flexible pipe with waste liquid barrel.
4. the mercury vapour sampling device of standard substance according to claim 3 and sample branch sample introduction, it is characterised in that：Institute
State the first peristaltic pump, the second peristaltic pump, the 3rd peristaltic pump, the first two-position three-way valve and the second two-position three-way valve and MCU controls
Unit is electrically connected.
5. the mercury vapour sampling device of standard substance according to claim 1 and sample branch sample introduction, it is characterised in that：Institute
The bottom for stating gas-liquid separator also connects an argon gas source.
6. the mercury vapour sampling device of standard substance according to claim 1 and sample branch sample introduction, it is characterised in that：Institute
Reducing agent is stated for Reduction with Stannous Chloride agent, the standard substance is NIST3133 mercury solutions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621466284.4U CN206312866U (en) | 2016-12-29 | 2016-12-29 | The mercury vapour sampling device of standard substance and sample branch sample introduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621466284.4U CN206312866U (en) | 2016-12-29 | 2016-12-29 | The mercury vapour sampling device of standard substance and sample branch sample introduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206312866U true CN206312866U (en) | 2017-07-07 |
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ID=59247703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621466284.4U Expired - Fee Related CN206312866U (en) | 2016-12-29 | 2016-12-29 | The mercury vapour sampling device of standard substance and sample branch sample introduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206312866U (en) |
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2016
- 2016-12-29 CN CN201621466284.4U patent/CN206312866U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20171229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |