CN106290698B - It is a kind of to be used to generate the method and generating means for stablizing leacheate in ion chromatography detection - Google Patents
It is a kind of to be used to generate the method and generating means for stablizing leacheate in ion chromatography detection Download PDFInfo
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- CN106290698B CN106290698B CN201610618768.4A CN201610618768A CN106290698B CN 106290698 B CN106290698 B CN 106290698B CN 201610618768 A CN201610618768 A CN 201610618768A CN 106290698 B CN106290698 B CN 106290698B
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- G01N30/96—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation using ion-exchange
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Abstract
The present invention provides the method and generating means for stablizing leacheate is generated in a kind of detection for ion chromatography, belong to ion chromatography generating means field, it can be when preparing leacheate, do not generate excessive gas, it does not need impressed current to be electrolysed so that complete machine structure is simpler, and cost is lower.This method includes：Pure water is pumped into leacheate and generates channel；Solion is pumped into first chamber and second chamber respectively by branch's circulation canal；According to the concentration difference between solion and pure water, the anion in solion in first chamber enters leacheate via anion-exchange membrane and generates channel, cation in solion in second chamber enters leacheate via cation-exchange membrane and generates channel, and leacheate is generated to generate reaction in channel in leacheate；The leacheate of generation is instilled into buffer cell, is provided into ion chromatography system after the leacheate of steady concentration to be formed.The present invention can be used for stablizing in the preparation of leacheate.
Description
Technical field
It is steady the present invention relates to being generated in the generating means field of ion chromatography, more particularly to a kind of detection for ion chromatography
Determine the method and generating means of leacheate.
Background technology
Ion chromatography is a kind of special liquid chromatography technology for analyzing ionic compound.Being different from liquid chromatogram makes
Organic phase leacheate, ion chromatography is usually using highly basic or strong acid solution as leacheate.Manually prepare these leacheates
When easily there is operating error, especially prepare strong base solution (such as KOH) when, easily absorb air in CO2, it is remote to become eluotropic strength
More than OH-'s-, influence subsequent separation and detection.
The appearance of electroluminescent elution liquid generator (ElectrodialyticEluentGenerator, EDG) technology is from basic
On overcome drawbacks described above.It is to be based on electrodialysis principle, the online generation of leacheate is realized by electrolyzing pure water, to eliminate
Error and possible air pollution caused by artificial preparation leacheate also improve the degree of automation of complete machine, system
Reproducibility and sensitivity.
Sai Mofei companies of the U.S. (Yuan Daian companies) were proposed commercialization EDG in 1998, it is as the said firm's ion color
The core component of spectra system, in recent years always in occupation of most middle and high end ion chromatographies market.Although from 80 years 20th century
It begins to develop ion chromatography complete machine for the country, but blank is still belonged to the research of this key technology, so that the relevant technologies are always
It is monopolized by offshore company.
Anion elutes liquid generator and room and low pressure K occurs by high pressure KOH+Electrolytic cell group at.KOH occurs there are one the dresses of room
The Pt cathodes of perforation, K+There are one Pt anodes for electrolytic cell dress.KOH occurs room dress and passes through cation-exchange membrane and K+Electrolytic cell connects.
Ion exchange connector allows to come from K+The K of electrolytic cell+Room occurs by and into high pressure KOH.Ion exchange connector is by high pressure
Room and low pressure K occur for KOH+Electrolytic cell separates.By KOH room occurs for pump driving deionized water, and direct current is added between positive and negative anodes
Voltage, water are electrolysed in anode and cathode.In the H that anode generates+Instead of the K in electrolyte solution+, the K that is displaced+Across
It crosses cation exchange connector and enters KOH generations room.These K+The OH generated with cathode-In conjunction with KOH is generated, that is, it is used for anion
The leacheate of exchange chromatography.The concentration of generated KOH solution is by being added to K+Electrolytic cell and KOH occur the electric current on room and pass through
The flow velocity that the water of room occurs for KOH determines.Therefore, accurately controlled with given flow velocity apply electric current can precision and online real estate
The KOH leacheates of concentration needed for raw.There are extraordinary linear relationships between application electric current and generated KOH concentration.Similarly,
By K+Electrolytic cell changes Loprazolam root (MSA) electrolytic cell into, and cation exchange connector changes anion exchange connector into, in electricity
It solves slot and is packed into Pt cathodes, room occurs and fills Pt anodes, can be configurable for the elution liquid generator of cation analysis.
But when preparing leacheate using above-mentioned electroluminescent elution liquid generator, it will produce extra CO2Gas, to
Make the leacheate configured need to be used by degassing process, and leacheate is being prepared using electrodialysis methods
When, it is also necessary to it is passed through impressed current and solution is electrolysed, complex so as to cause complete machine structure, cost is higher.
Invention content
The purpose of the present invention is to provide method and the generation for stablizing leacheate are generated in a kind of detection for ion chromatography
Device can not generate excessive gas when preparing leacheate, not need the electrolysis that impressed current carries out solution, so that
Complete machine structure is simpler, and cost is lower.
An aspect of of the present present invention provides a kind of method generating stable leacheate in being detected for ion chromatography, including：
Pure water is pumped into leacheate and generates channel；
Solion is pumped into first chamber and second chamber respectively by branch's circulation canal；
According to the concentration difference between solion and pure water, the anion in solion in first chamber via the moon from
Proton exchange enters leacheate and generates channel, and the cation in the solion in second chamber enters via cation-exchange membrane
Leacheate generates channel, and leacheate is generated to generate reaction in channel in leacheate；
The leacheate of generation is instilled into buffer cell, is provided after the leacheate of steady concentration to be formed and arrives ion chromatography system
In.
Solion is pumped into first chamber and second chamber with the flow rate pump of 0.8-1.8mL/min.
Solion is pumped into after being pumped into first chamber and second chamber with the constant flow pump flow velocity of 0.8mL/min.
Solion is pumped into first chamber and the direction of second chamber is pumped into the direction phase that leacheate generates channel with pure water
Instead.
Solion is saturated solution or supersaturated solution.
Effective diffusion area of anion-exchange membrane and cation-exchange membrane and the leaching exported out of leacheate generation channel
The concentration of washing lotion is directly proportional.
Unit is adjusted using liquid level the liquid level of the leacheate in buffer cell is adjusted.
Liquid level adjusts and is filled with leacheate in unit, and one end that liquid level adjusts unit is stretched into buffer cell, and the other end is logical
Filter membrane is connected with air.
Leacheate volume accounts for the 50%-70% of buffer cell volume in buffer cell.
Another aspect provides it is a kind of for ion chromatography detection in generate stablize leacheate generating means,
Including：
First chamber and second chamber, the first chamber and second chamber are mutual indepedent；
Branch's circulation canal, branch's circulation canal include first branch's circulation canal and second branch's circulation canal,
Wherein, first branch circulation canal and second branch's circulation canal are in fluid communication with first chamber, second chamber respectively；
Leacheate generates channel, and the leacheate generates channel and is arranged between the first chamber and second chamber,
In, leacheate generates channel and is mutually separated by anion-exchange membrane and first chamber, and leacheate generates channel and handed over by cation
Film is changed to be mutually separated with second chamber；It includes injection end and outflow end that the leacheate, which generates channel, and the injection end is used for leaching
Washing lotion generates channel and injects pure water, and the outflow end is used to export leacheate and generates the leacheate that channel generates；
Buffer cell, buffer cell are used to receive leacheate exporting from outflow end, being added dropwise in buffer cell, and right
It forms it into the leacheate of steady concentration to be supplied to ion chromatography system into row buffering mixing；
Fluid reservoir, fluid reservoir are in fluid communication via the first conduit and the first branch circulation canal, and via the second conduit with
Second branch's circulation canal is in fluid communication.
Generating means further includes that liquid level adjusts unit, and one end that liquid level adjusts unit is stretched into buffer cell, and the other end is logical
Filter membrane is connected with air.
Liquid level adjusting unit is cylinder, and the internal diameter that liquid level adjusts unit is 2-3cm, is highly 3-5cm.
Buffer cell is cylinder, and the internal diameter of buffer cell is 4.5-5.5cm, is highly 5-8cm.
Injection end and outflow end mutually exchange.
The area that leacheate generates channel is 18-22mm2, the area of first chamber and second chamber is respectively 22-26mm2。
The material of generating means uses organic glass.
The present invention provides the method and generating means for stablizing leacheate is generated in a kind of detection for ion chromatography, compare
In the existing method for generating leacheate, this method uses free diffusing method, using the concentration difference between solion and pure water,
So that solion is exchanged via anion-exchange membrane and cation-exchange membrane respectively enters leacheate generation channel, and eluting
Liquid generates reaction generation leacheate in channel, which mixes subsequently through buffer unit buffers, so as to ion chromatography
System is to provide the leacheate of steady concentration.The method overcome existing electrodialysis methods to need to be passed through when preparing leacheate
The tedious steps that impressed current is electrolysed solution, and when preparing leacheate, it is thus also avoided that excessive gas is generated, to make
This method it is more convenient, correspondingly, also simpler using the complete machine structure of the generating means of this method, cost is lower.
Description of the drawings
The generating means for generating stable leacheate in ion chromatography detection that Fig. 1 is provided by the embodiment of the present invention
Structural schematic diagram.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
The embodiment of one aspect of the present invention provides a kind of method generating stable leacheate in being detected for ion chromatography,
Including：
S1：Pure water is pumped into leacheate and generates channel；
S2：Solion is pumped into first chamber and second chamber respectively by branch's circulation canal；
S3：According to the concentration difference between solion and pure water, the anion in solion in first chamber via
Anion-exchange membrane enters leacheate and generates channel, and the cation in the solion in second chamber is via cation-exchange membrane
Channel is generated into leacheate, leacheate is generated to generate reaction in channel in leacheate；
S4：The leacheate of generation is instilled into buffer cell, is provided after the leacheate of stabilization to be formed and arrives ion chromatography system
In.
In the above-described embodiments, solion is pumped into two chambers respectively, i.e. first chamber and second chamber, is needed
It is noted that the position of the position of first chamber and second chamber, anion-exchange membrane and cation-exchange membrane is not limited to
Shown in Fig. 1, position can be interchanged, as long as ensuring that one of chamber is in contact with anion-exchange membrane, separately
One chamber is in contact with cation-exchange membrane.Also, in the above-described embodiments, the concentration between solion and pure water
Difference is interpreted as concentration of the concentration more than pure water of solion, to be expanded by exchange membrane according to free diffusing principle
It dissipates.
It is understood that in order to avoid introducing impurity in the preparation of leacheate, generates in channel and be pumped into leacheate
Should be pure water, be pumped into speed in the present embodiment and be not specifically limited, only need in the whole process according to practical operation item
Part will be pumped into speed and maintain certain, rational speed.It will also be appreciated that do not limit in the present embodiment from
The specific composition of sub- solution, as long as the solion suitable for this method should all be within the scope of the present invention.
In one embodiment of this invention, solion is pumped into first chamber and with the flow rate pump of 0.8-1.8mL/min
Two chambers.In the present embodiment, the speed that is pumped into for specifically defining solion, here primarily to enabling solion
In a short time be full of each chamber, with reduce solion in each chamber of starting stage underfill, zwitterion be diffused into leaching
Washing lotion generates the concentration variation of the leacheate generated in channel.It is understood that flow rate pump can 1.0mL/min,
1.2mL/min, 1.4mL/min, 1.6mL/min etc..
In one embodiment of this invention, solion after being pumped into first chamber and second chamber with 0.8mL/min's
Constant flow pump flow velocity is pumped into.In the present embodiment, solion is also defined full of the flow rate pump after each chamber, can is
0.8mL/min, it should be noted that the flow rate pump is only preferred flow rate pump, is according to generating means used in the present embodiment
Size defined by, those skilled in the art can according to the flow rate pump, in conjunction with used generating means size into
Row adjustment.
In one embodiment of this invention, solion is pumped into first chamber and the direction of second chamber is pumped into leaching with pure water
The direction that washing lotion generates channel is opposite.In the present embodiment, the flow direction of solion and the flowing of pure water are specifically illustrated
Direction be it is opposite, this primarily to solion and pure water can be carried out during free diffusing it is more abundant.It can
With understanding, the flow direction of solion and the flow direction of pure water are alternatively the same direction, this can't influence freedom
Diffusion effect.
In one embodiment of this invention, solion is saturated solution or supersaturated solution.In the present embodiment, into one
Step defines that solion is that saturated solution or supersaturation are molten.It is understood that in the above-described embodiments, though not to ion
The concentration of solution is defined, it will be appreciated by those skilled in the art that in order to ensure to generate channel from leacheate
The concentration of the leacheate of interior outflow is stable, then the concentration of the solion entered need to keep stable, specific concentration can root
It is set according to eluent concentration needed for practical operation.In the present embodiment, preferred ion solution is saturated solution or satiety
And solution, the concentration into the solion of chamber can be more directly controlled in this way, more preferably ensure the stability of its concentration.
In one embodiment of this invention, effective diffusion area of anion-exchange membrane and cation-exchange membrane with from elution
The concentration that liquid generates the leacheate exported in channel is directly proportional.In the present embodiment, the concentration of finally obtained leacheate can
It is directly proportional with the effective diffusion area and flow rate pump of anion-exchange membrane and cation-exchange membrane etc., in this way according to required
The concentration of leacheate can be adjusted effective diffusion area, flow rate pump etc..
In one embodiment of this invention, liquid level height of the unit 14 to the leacheate in buffer cell 12 is adjusted using liquid level
Degree is adjusted.In the present embodiment, in order to making the liquid level of leacheate in buffer cell be maintained at Metacentre Height model
It is adjusted using liquid level adjusting unit in the present embodiment in enclosing, it can effectively avoid leacheate in this way and dropping to buffering
The phenomenon that liquid level of leacheate when in unit caused by bubble generates or other extraneous factors reduces.
In one embodiment of this invention, liquid level adjusts and is filled with leacheate in unit 14, and liquid level adjusts the one of unit 14
End is stretched into buffer cell, and the other end is connected by filter membrane with air.In the present embodiment, liquid level adjusts unit in setting,
It is filled with concentration in it and is supplied to the leacheate that concentration needed for ion chromatography system is equal as replenisher, in this way in atmospheric pressure
Under the action of, it is acted on by pressure, leacheate to be replenished in time into buffer cell.It is understood that generating ion color
During the entire process of a certain amount of leacheate needed for spectra system, the amount for the replenisher being added is seldom, be can avoid in this way
Additionally prepare the tedious steps of a large amount of replenishers.Once there is the inadequate phenomenon of replenisher, then can by by filter membrane open to
Liquid level, which is adjusted, supplements leacheate in unit.
In one embodiment of this invention, 12 leacheate volumes account for the 50%- of 12 volume of buffer cell in buffer cell
70%.In the present embodiment, the leacheate volume ratio in buffer cell is specifically illustrated, this is primarily to playing makes generation
Leacheate can realize quickly mixing and the quick purpose for being supplied to ion chromatography system after instilling in buffer cell, to
Guarantee stabilization and offer leacheate is provided.It is understood that in buffer cell the volume of leacheate can also be 55%,
60%, 65% etc., those skilled in the art can carry out selection adjusting according to actual conditions.
The embodiment of another aspect of the present invention provides a kind of hair generating stable leacheate in being detected for ion chromatography
Generating apparatus, as shown in Figure 1, including：
First chamber 1 and second chamber 2, first chamber 1 and second chamber 2 are mutual indepedent；
Branch's circulation canal, branch's circulation canal include first branch's circulation canal 6 and second branch's circulation canal 7,
In, first branch's circulation canal 6 and second branch's circulation canal 7 are in fluid communication with first chamber 1, second chamber 2 respectively；
Leacheate generates channel 5, and leacheate generates channel 5 and is arranged between first chamber 1 and second chamber 2, wherein leaching
Washing lotion generates channel 5 and is mutually separated by anion-exchange membrane 3 and first chamber 1, and leacheate generates channel 5 and exchanged by cation
Film 4 is mutually separated with second chamber 2；It includes injection end 8 and outflow end 9 that leacheate, which generates channel 5, and injection end 8 is used for leacheate
It generates channel 5 and injects pure water, outflow end 9 is used to export leacheate and generates the leacheate that channel 5 generates；
Buffer cell 12, buffer cell 12 is for receiving elution being exported from outflow end 9, being added dropwise in buffer cell 12
Liquid, and stable leacheate is formed it into be supplied to ion chromatography system into row buffering mixing to it；
Fluid reservoir 13, fluid reservoir 13 are in fluid communication via the first conduit 10 and first branch's circulation canal 6, and via second
Conduit 11 and second branch's circulation canal 7 are in fluid communication.
In the present embodiment, a kind of generating means being used in ion chromatography detection generate stable leacheate, phase are provided
Than for existing generating means, generating means structure provided by the invention is more simple, and cost is lower.It is appreciated that
It is, in the present embodiment, the position of first chamber 1 and second chamber 2, the position of anion-exchange membrane 3 and cation-exchange membrane 4
And the position of injection end 8 and outflow end 9 is not limited to that shown in Fig. 1, position can be interchanged, as long as ensuring chamber
In one be in contact with anion-exchange membrane 3, another in chamber is in contact with cation-exchange membrane 4, and one end inject
Pure water is injected for generating channel 5 to leacheate, the other end is used to export leacheate and generates the leacheate that channel 5 generates.
It will also be appreciated that the anion-exchange membrane 3 and cation-exchange membrane 4 used in the present embodiment are dedicated zwitterion
Semi-permeable membrane.In the above embodiment of the present invention, generating means further includes that liquid level adjusts unit 14, and liquid level adjusts the one of unit 14
End is stretched into buffer cell, and the other end is connected by filter membrane with air.In the present embodiment, generating means further includes that liquid level is adjusted
Unit, the liquid level of the leacheate being adjusted to ensure that by pressure in buffer cell are maintained in stable range.It can manage
Solution, in one embodiment of this invention, buffer cell are instilling the pipeline of leacheate and from buffer cell in addition to being connected with
It the interior pipeline for drawing leacheate and is adjusted outside the pipeline that is connected of unit with liquid level, it is preferably closed, it can ensure that in this way pair
In effective adjusting of liquid level, and then top is equipped with filter membrane to liquid level adjusting unit, can ensure that ensureing the same of pressure in this way
When, avoid interference of the introduced contaminants to leacheate.
In any of the above-described embodiment of the present invention, liquid level adjusting unit 14 is cylinder, and liquid level adjusts the interior of unit 14
Diameter is 2-3cm, is highly 3-5cm.In any of the above-described embodiment of the present invention, buffer cell 12 is cylinder, buffer cell
12 internal diameter is 4.5-5.5cm, is highly 5-8cm.In the above-described embodiments, the shape of unit and buffer cell is also adjusted to liquid level
Shape and size are defined, wherein about size are that leacheate is combined in previous embodiment to generate the area that passes through and the
One chamber, second chamber area be designed, in this way under conditions of considering flow velocity and mixing situation, be designed to
Above-mentioned size can effectively ensure the quick mixing and quickly supply of the leacheate instilled.It is understood that the present embodiment is not
It is confined to above-mentioned shape and size, those skilled in the art can also be adjusted it, as long as can meet above-mentioned needs.
In any of the above-described embodiment of the present invention, injection end 8 and outflow end 9 mutually exchange.In the present embodiment, ability
Field technique personnel can mutually adjust injection end 8 and outflow end 9 according to practical operation, i.e. transposition.
In any of the above-described embodiment of the present invention, the area that leacheate generates channel 5 is 18-22mm2, first chamber 1
Area with second chamber 2 is respectively 22-26mm2.In the present embodiment, the area and the first chamber in channel 5 are generated to leacheate
Room 1, second chamber 2 area be defined, the generating means which obtains can meet the hair that existing commercialization uses
The needs of generating apparatus.But it is understood that generating means that the embodiment of the present invention is provided and be confined to it is above-mentioned defined by
Size, those skilled in the art can also according to actual needs in proportion zoom in or out the generating means, do not departing from this hair
Under conditions of bright protected range, respective change and adjustment that those skilled in the art make details should all belong to this
The protection domain of invention.
In any of the above-described embodiment of the present invention, the material of generating means uses tempered glass.In the present embodiment, have
Body lists material used in generating means, in order to preferably corrosion-resistant, acid and alkali-resistance, the material used in the present embodiment
Material is organic glass.
In order to become apparent from introduce that the embodiment of the present invention provided in detail stablize leaching for being generated in ion chromatography detection
The method and generating means of washing lotion, below will be with Na2CO3It is specifically illustrated for saturated solution.
Embodiment 1
By Na2CO3Saturated solution is pumped into the first chamber respectively with the flow rate pump of 0.8mL/min by first branch's circulation canal
Then room and second chamber are pumped into the constant flow pump flow velocity of 0.8mL/min；At the same time, pure water is pumped into leacheate and generated and led to
Road；According to Na2CO3Concentration difference between saturated solution and pure water, the Na in first chamber2CO3CO in saturated solution3 2-Ion
Enter leacheate via anion-exchange membrane and generates channel, the Na in second chamber2CO3Na in saturated solution+Ion is via sun
Amberplex enters leacheate and generates channel, enters the CO in leacheate generation channel3 2-Ion and Na+Ion occurs anti-
Leacheate should be generated；Then, leacheate is slowly dropped into via fluid communication means such as conduits in buffer cell, and in buffer cell
It inside mixes well, to provide stable leacheate to ion chromatography system.
Embodiment 2
By Na2CO3Saturated solution is pumped into the first chamber respectively with the flow rate pump of 1.2mL/min by first branch's circulation canal
Then room and second chamber are pumped into the constant flow pump flow velocity of 0.8mL/min；At the same time, pure water is pumped into leacheate and generated and led to
Road；According to Na2CO3Concentration difference between saturated solution and pure water, the Na in first chamber2CO3CO in saturated solution3 2-Ion
Enter leacheate via anion-exchange membrane and generates channel, the Na in second chamber2CO3Na in saturated solution+Ion is via sun
Amberplex enters leacheate and generates channel, enters the CO in leacheate generation channel3 2-Ion and Na+Ion occurs anti-
Leacheate should be generated；Then, leacheate is slowly dropped into via fluid communication means such as conduits in buffer cell, and in buffer cell
It inside mixes well, to provide stable leacheate to ion chromatography system.
Embodiment 3
By Na2CO3Saturated solution is pumped into the first chamber respectively with the flow rate pump of 1.8mL/min by first branch's circulation canal
Then room and second chamber are pumped into the constant flow pump flow velocity of 0.8mL/min；At the same time, pure water is pumped into leacheate and generated and led to
Road；According to Na2CO3Concentration difference between saturated solution and pure water, the Na in first chamber2CO3CO in saturated solution3 2-Ion
Enter leacheate via anion-exchange membrane and generates channel, the Na in second chamber2CO3Na in saturated solution+Ion is via sun
Amberplex enters leacheate and generates channel, enters the CO in leacheate generation channel3 2-Ion and Na+Ion occurs anti-
Leacheate should be generated；Then, leacheate is slowly dropped into via fluid communication means such as conduits in buffer cell, and in buffer cell
It inside mixes well, to provide stable leacheate to ion chromatography system.
Claims (6)
1. generating the method for stablizing leacheate in a kind of detection for ion chromatography, which is characterized in that including：
Pure water is pumped into leacheate and generates channel；
Solion is pumped into first chamber and second chamber respectively by branch's circulation canal；
According to the concentration difference between solion and pure water, the anion in solion in first chamber is handed over via anion
It changes film and enters leacheate generation channel, the cation in solion in second chamber enters elution via cation-exchange membrane
Liquid generates channel, and leacheate is generated to generate reaction in channel in leacheate；
The leacheate of generation is instilled into buffer cell, is provided into ion chromatography system after the leacheate of stabilization to be formed；
Solion is pumped into first chamber and second chamber with the flow rate pump of 0.8-1.8mL/min；
Flow rate pump of the solion after being pumped into first chamber and second chamber is 0.8mL/min；
Solion is saturated solution or supersaturated solution.
2. according to the method described in claim 1, it is characterized in that, solion is pumped into the direction of first chamber and second chamber
It is opposite it to be pumped into the leacheate generation direction in channel with pure water.
3. according to the method described in claim 1, it is characterized in that, effective diffusion of anion-exchange membrane and cation-exchange membrane
Area is directly proportional to the concentration of leacheate exported out of leacheate generation channel.
4. according to the method described in claim 1, it is characterized in that, adjusting unit to the leaching in the buffer cell using liquid level
The liquid level of washing lotion is adjusted.
5. according to the method described in claim 4, it is characterized in that, the liquid level adjust unit in be filled with leacheate, it is described
One end that liquid level adjusts unit is stretched into the buffer cell, and the other end is connected by filter membrane with air.
6. according to the method described in claim 4, it is characterized in that, leacheate volume accounts for the buffering list in the buffer cell
The 50%-70% of elementary volume.
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| CN102234813A (en) * | 2010-04-27 | 2011-11-09 | 张晨光 | Bipolar membrane acid-base liquid generating device for chromatographic technology |
| CN201732083U (en) * | 2010-07-09 | 2011-02-02 | 青岛盛瀚色谱技术有限公司 | Ion chromatography leacheate preparation device |
| CN102049192A (en) * | 2010-11-29 | 2011-05-11 | 南京大学 | Concentration difference dialysis device |
| WO2013028924A1 (en) * | 2011-08-23 | 2013-02-28 | Board Of Regents, The University Of Texas System | Electrolytic buffer generator |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205844293U (en) * | 2016-07-29 | 2016-12-28 | 青岛鲁海光电科技有限公司 | A kind of generation in chromatography of ions detects stablizes the generating means of leacheate |
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