CN103940660A - Multichannel membrane enrichment device - Google Patents
Multichannel membrane enrichment device Download PDFInfo
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- CN103940660A CN103940660A CN201410131638.9A CN201410131638A CN103940660A CN 103940660 A CN103940660 A CN 103940660A CN 201410131638 A CN201410131638 A CN 201410131638A CN 103940660 A CN103940660 A CN 103940660A
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Abstract
The invention relates to a multichannel membrane enrichment device comprising a multichannel input unit, an enrichment filter membrane and a filter liquor collection container, wherein the multichannel input unit is a wafer with holes and at least one smooth face and in butt joint with the enrichment filter membrane by the smooth face; connection pipelines are arranged on the holes in the other face of the multichannel input unit for inputting a sample solution; the filter liquor collection container is arranged below the enrichment filter membrane; the filter liquor collection container comprises a micropore filter core and a filter liquor container; the lower end of the micropore filter core is connected with the opening end of the filter liquor container by a rubber plug; the filter liquor container is provided with a vacuum pump connection hole. By utilizing the multichannel membrane enrichment device, a plurality of samples can be treated on the same filter membrane simultaneously or according to a certain order to improve repeatability of enrichment process. Filter hole diameter can be changed according to needs, and the enrichment efficiency is high under the condition that the samples are the same in size. By utilizing the multichannel membrane enrichment device, multichannel simultaneous enrichment can be realized, enrichment process can be accelerated, batch operation is easy to realize, different number of channels can be selectively used, and the number of the samples is easy to control.
Description
Technical field
The present invention relates generally to the sample pretreatment field of analytical chemistry.Specifically, be a kind of multi-channel membrane enriching apparatus.
Background technology
Film detachment process is a kind of method of utilizing film separating mixture.Film is as the selection permeability phase between two-phase, can make a certain or various ingredients of two-phase see through film, and other components of damming, thereby realizes the separation between different component, reaches that a certain or various ingredients separates, the object of concentrated and purifying.Different film detachment processes can have different separating mechanisms and expulsive force.And membrane filtration is wherein a kind of, it is mainly to utilize the screening detachment process that fluid pressure differential is expulsive force.
Film beneficiation technologies is a kind of solid phase extraction techniques based on membrane filtration processes.It utilize in solution the physical action between amalyzing substances and film and chemical action by enrichment of analytes on miillpore filter.After enrichment finishes, filter membrane is taken out, can be dried afterwards or be directly used in further analysis, or will be carried out wash-out by enriched substance.That film beneficiation technologies has is simple to operate, cost is low, without features such as organic solvents.But, its deficiency is: due to design and the specification limits of commercialization solvent filter, a filter membrane can only be processed a sample solution simultaneously, and the core of conventional solvent filter typically has a diameter from 30mm, 40mm, 50mm, in order to reach higher bioaccumulation efficiency, sample that can only enrichment larger volume.In addition, the character of filter membrane self, as kind, aperture, thickness, homogeneity, has a significant impact enrichment process and subsequent detection process.Mostly there is the problem of lack of homogeneity in commercially available filter membrane at present.Aperture, the thickness of the film that different manufacturers different batches is produced, same batch different film, even same film diverse location all may be variant, and this will have a strong impact on the repeatability of film enrichment process.In the time that direct collection film diffuse reflection spectrum carries out spectral analysis, the impact that the difference of film self causes is particularly serious.But, in the actual use procedure of filter membrane, also do not have at present a kind of standard or good method to select filter membrane.
Summary of the invention
The object of the invention is to address the above problem, a kind of multi-channel membrane enriching apparatus is provided, first, it can be on same filter membrane simultaneously or process in certain sequence multiple samples, can avoid due to the difference of filter membrane own the impact that enrichment and subsequent detection are caused owing to using same film; Secondly, on filter membrane, the aperture of filtering holes can change on demand, to improve bioaccumulation efficiency; The 3rd, can hyperchannel Sync enrichment, accelerate the progress of work, easily realize batch operation; The 4th, optionally use the passage of varying number, can easily Quality control number.Described enriching apparatus is applicable to separation and the enrichment of analytes in low concentration matter in various solution, makes film beneficiation technologies have more practical prospect.
For achieving the above object, the present invention has taked following technical scheme.
A kind of multi-channel membrane enriching apparatus, is characterized in that, contains sample solution hyperchannel input unit, enrichment filter membrane and filtrate collection container; Described hyperchannel input unit is one to be disk 2～20mm hole, that have one-sided smooth at least with 2～50 diameters, described hyperchannel input unit docks with described enrichment filter membrane by smooth one side, is respectively provided with the input of connecting tube for sample solution on each hole of described hyperchannel input unit another side; Described filtrate collection container is set under described enrichment filter membrane: described filtrate collection container comprises a micropore filter element and a filtrate container, in described micropore filter element upper end, one sand core structure is set, the lower end of described micropore filter element is connected with the mouth end of described filtrate container by rubber stopper; Above described filtrate container body, be provided with vacuum pump connector.
Optionally, described hyperchannel input unit is the disk of diameter 20～200mm, thickness 2～20mm, adopts the structural member of glass, plastics or corrosion-resistant metal materials.
Optionally, described connecting tube is that the plastic flexible pipe in described hole is inserted in sealing, or height is glass tube or the plastic tube of 10～150mm.
Further, described enrichment filter membrane covers the whole lower end of hyperchannel entering apparatus, ensures that all samples solution all can be by enrichment filter membrane.
Optionally, described enrichment filter membrane is one or more of cellulose acetate membrane, cellulose mixture film, nitrocellulose filter, glass fibre element film, nylon membrane, poly (ether sulfone) film, poly tetrafluoroethylene, polyvinylidene fluoride film and polyamide membrane.
Optionally, the container that described filtrate container is glass, plastics or corrosion resistant metal.
Further, the volume of described filtrate container should be able to take up all filtrates of an enrichment.
Optionally, diameter is set is that 20～200mm, aperture are the sand core structure of 1～30 μ m in described micropore filter element upper end.
The good effect of multi-channel membrane enriching apparatus of the present invention is:
(1) can be on same filter membrane simultaneously or process in certain sequence multiple samples, be same film due to what use, thereby avoided impact enrichment and subsequent detection being caused due to filter membrane self difference, improved the repeatability of enrichment process.
(2) aperture of filtering holes can change on demand, in the time using same volume sample, can reach larger bioaccumulation efficiency.
(3) energy hyperchannel Sync enrichment, has accelerated enrichment process, easily realizes batch operation.
(4) optionally use the passage of varying number, number that can easily Quality control.
Brief description of the drawings
Fig. 1 is the structural representation of multi-channel membrane enriching apparatus of the present invention.
Fig. 2 is the vertical view of hyperchannel input unit (disk).
Fig. 3 is the structural representation that connecting tube is set on each hole of hyperchannel input unit.
Label in figure is respectively:
1, hyperchannel input unit; 2, enrichment filter membrane;
3, filtrate collection container; 4, micropore filter element;
5, filtrate container; 6, rubber plug
7, vacuum pump connector; 8, connecting tube.
Embodiment
Introduce the embodiment of multi-channel membrane enriching apparatus of the present invention below in conjunction with accompanying drawing, 4 embodiment are provided.But be noted that enforcement of the present invention is not limited to following embodiment.
Referring to Fig. 1.A kind of multi-channel membrane enriching apparatus, contains sample solution hyperchannel input unit 1, enrichment filter membrane 2, filtrate collection container 3, micropore filter element 4, filtrate container 5, rubber plug 6, vacuum pump connector 7 and connecting tube 8.Described hyperchannel input unit 1 is the disk of diameter 20～200mm, thickness 2～20mm, can adopt the structural member of glass, plastics or corrosion-resistant metal materials.At least one side of described disk is shiny surface, is provided with the hole that 2～50 diameters are 2～20mm (referring to Fig. 2) on described disk.The connecting tube 8(corresponding with described hole is set on described hyperchannel input unit 1 referring to Fig. 3), for the input of sample solution.
It is glass tube or the plastic tube of 10～150mm that described connecting tube 8 can adopt plastic flexible pipe or height in sealing patchhole.
Described enrichment filter membrane 2 can adopt one or more of cellulose acetate membrane, cellulose mixture film, nitrocellulose filter, glass fibre element film, nylon membrane, poly (ether sulfone) film, poly tetrafluoroethylene, polyvinylidene fluoride film and polyamide membrane.
It is that 20～200mm, aperture are the sand core structure of 1～30 μ m that described micropore filter element 4 upper ends arrange diameter.。
Described filtrate container 5 can adopt the container of glass, plastics or corrosion resistant metal, should adopt its volume can take up the filtrate container 5 of all filtrates of an enrichment.
Described hyperchannel input unit 1 is docked with described enrichment filter membrane 2 by smooth one side (below), described enrichment filter membrane 2 is covered to the whole lower end of described hyperchannel input unit 1, ensure that all samples solution all can be by enrichment filter membrane 2.At described enrichment filter membrane, described filtrate collection container 3 is set for 2 times, that is: by the upper end of described filtrate collection container 3 by enrichment filter membrane 2 lower end facing to described hyperchannel input unit 1: described filtrate collection container 3 comprises a micropore filter element 4 and a filtrate container 5, in described micropore filter element 4 upper ends, a sand core structure is set, described micropore filter element lower end is connected with described filtrate container mouth end by rubber stopper; A vacuum pump connector 7 is set above the body of described filtrate container 5; Described filtrate collection container 3 is to be connected with described enrichment filter membrane 2 by the sand core structure of described micropore filter element 4 upper ends.
The using method of multi-channel membrane enriching apparatus of the present invention is:
(1) enrichment filter membrane 2 is lain on the sand core structure of micropore filter element 4 upper ends of filtrate collection container 3.
(2) hyperchannel input unit 1 is placed on enrichment filter membrane 2 by smooth one side, is fixed with clip or magnetic means.
(3) sample solution is injected to hyperchannel input unit 1 and opened vacuum pump by connecting tube 8, like this, sample solution just sees through enrichment filter membrane 2 and enters filtrate container 5 through micropore filter element 4.
Or unlatching vacuum pump, the connecting tube on hyperchannel input unit 18 is directly inserted in sample solution, under the effect of vacuum pump, sample solution is inhaled into hyperchannel input unit 1, enters filtrate container 5 after enrichment filter membrane 2.
(4) after enrichment finishes, close vacuum pump, remove hyperchannel input unit 1, take out enrichment filter membrane 2, can directly gather its ultraviolet-visible or near-infrared diffuse reflection spectrum, Solid fluorescene spectrum carries out spectral analysis, or utilizes conventional method wash-out to be carried out next step analysis by enrichment compound.
4 specific embodiments of multi-channel membrane enriching apparatus of the present invention are below provided.
embodiment 1
Adopt multi-channel membrane enriching apparatus of the present invention to carry out enrichment, the steps include:
(1) the cellulose mixture enrichment filter membrane 2 of aperture 0.22 μ m, diameter 50mm is lain on the sand core structure of micropore filter element 4 upper ends of filtrate collection container 3, the diameter of sand core structure is 40mm, and aperture is 20 μ m.
(2) the hyperchannel input unit 1 that is provided with 6 holes (aperture is 7mm) is placed on enrichment filter membrane 2 by smooth one side, fixes with magnetic means.
(3) the divalent cobalt ion pH value of solution that the Tris-HCl that is 9.0 with pH and NaOH are 1～30 μ g/L by 6 parts of 50mL concentration is adjusted to 9.0, and adding 100uL concentration is 10
-3the PAN of mol/L, magnetic agitation 7 minutes, makes PAN fully react acquisition sample solution with divalent cobalt ion.
This sample solution is injected respectively to 6 connecting tubes 8 of hyperchannel input unit 1 and opens vacuum pump; Under the effect of vacuum pump, sample solution sees through enrichment filter membrane 2 and enters filtrate container 5 through micropore filter element 4.
(4) after enrichment finishes, close vacuum pump, remove hyperchannel input unit 1, take out enrichment filter membrane 2, after enrichment filter membrane 2 is dry, directly carry out UV-Vis DRS spectral detection.
After testing: the enrichment that embodiment 1 carries out, extraction efficiency is between 95～99%, and enrichment factor is between 300～600 times.
embodiment 2
Adopt multi-channel membrane enriching apparatus of the present invention to carry out enrichment, the steps include:
(1) the cellulose mixture enrichment filter membrane 2 of aperture 0.1 μ m, diameter 60mm is lain on the sand core structure of micropore filter element 4 upper ends of filtrate collection container 3, the diameter of sand core structure is 50mm, and aperture is 10 μ m.
(2) the hyperchannel input unit 1 that is provided with 50 holes (aperture is 3mm) is placed on enrichment filter membrane 2 by smooth one side, fixes with clip.
(3) by 50 connecting tube 8(plastic flexible pipes that are connected on hyperchannel input unit 1) insert respectively 50 parts of 10mL, concentration is in the rhodamine B sample solution of 1～500 μ g/L, pH=1.0, open vacuum pump.Under the effect of vacuum pump, sample solution is inhaled into hyperchannel input unit 1 and sees through enrichment filter membrane 2 and enters filtrate container 5 through micropore filter element 4.
(4) after enrichment finishes, close vacuum pump, remove hyperchannel input unit 1, take out enrichment filter membrane 2, after enrichment filter membrane 2 is dry, directly carry out UV-Vis DRS spectral detection.
After testing: the enrichment that embodiment 2 carries out, extraction efficiency is between 85～95%, and enrichment factor is between 100～300 times.
embodiment 3
Adopt multi-channel membrane enriching apparatus of the present invention to carry out enrichment, the steps include:
(1) the nylon micropore enrichment filter membrane 2 of aperture 0.22 μ m, diameter 60mm is lain on the sand core structure of micropore filter element 4 upper ends of filtrate collection container 3, the diameter of sand core structure is 50mm, and aperture is 20 μ m.
(2) the hyperchannel input unit 1 that is provided with 20 holes (aperture is 5mm) is placed on enrichment filter membrane 2 by smooth one side, fixes with clip.
(3) by 20 connecting tube 8(plastic flexible pipes that are connected on hyperchannel input unit 1) insert respectively 20 parts of 10mL, concentration is in the 2-naphthalene sulfonic acids sample solution of 1-300 μ g/L, pH=3.5, open vacuum pump.Under the effect of vacuum pump, sample solution is inhaled into hyperchannel input unit 1 and sees through enrichment filter membrane 2 and enters filtrate container 5 through micropore filter element 4.
(4) after enrichment finishes, close vacuum pump, remove hyperchannel input unit 1, take out enrichment filter membrane 2, after filter membrane is dry, directly carry out solid fluorescence detection.
After testing: the enrichment that embodiment 3 carries out, extraction efficiency is between 90～95%, and enrichment factor is between 800～1000 times.
embodiment 4
Adopt multi-channel membrane enriching apparatus of the present invention to carry out enrichment, the steps include:
(1) by the nylon micropore enrichment filter membrane 2(of an aperture 0.22 μ m, diameter 60mm for enrichment diisooctyl phthalate) be stacked in an aperture 0.1 μ m, diameter 60mm cellulose mixture enrichment filter membrane 2(for enrichment rhodamine B) and above, lie in together on the sand core structure of micropore filter element upper end of filtrate collection container 3, the diameter of sand core structure is 50mm, and aperture is 10 μ m.
(2) the hyperchannel input unit 1 that is provided with 2 holes (aperture is 20mm) is placed on enrichment filter membrane 2 by smooth one side, fixes with clip.
(3) diisooctyl phthalate (0.03～0.7mg/L) of 2 parts of 18mL variable concentrations pH=4.0 and rhodamine B (1～50 μ g/L) biased sample solution are injected respectively to 2 connecting tubes 8 of hyperchannel input unit 1 and open vacuum pump, under the effect of vacuum pump, sample solution sees through enrichment filter membrane 2 and enters filtrate container 5 through micropore filter element 4.
(4) after enrichment finishes, close vacuum pump, remove hyperchannel input unit 1, take out enrichment filter membrane 2, wherein nylon membrane, without dry, directly carries out UV Diffuse Reflectance Spectroscopy detection, and cellulose mixture film carries out UV-Vis DRS spectral detection after dry.
After testing: the enrichment that embodiment 4 carries out, the extraction efficiency of diisooctyl phthalate is between 85～90%, and enrichment factor is between 100～300 times, and the extraction efficiency of rhodamine B is between 80～90%, and enrichment factor is between 100～300 times.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of structure of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a multi-channel membrane enriching apparatus, is characterized in that, contains sample solution hyperchannel input unit, enrichment filter membrane and filtrate collection container; Described hyperchannel input unit is one to be disk 2～20mm hole, that have one-sided smooth at least with 2～50 diameters, described hyperchannel input unit docks with described enrichment filter membrane by smooth one side, is respectively provided with the input of connecting tube for sample solution on each hole of described hyperchannel input unit another side; Described filtrate collection container is set under described enrichment filter membrane: described filtrate collection container comprises a micropore filter element and a filtrate container, in described micropore filter element upper end, one sand core structure is set, the lower end of described micropore filter element is connected with the mouth end of described filtrate container by rubber stopper; Above described filtrate container body, be provided with vacuum pump connector.
2. multi-channel membrane enriching apparatus according to claim 1, is characterized in that, described hyperchannel input unit is the disk of diameter 20～200mm, thickness 2～20mm, adopts the structural member of glass, plastics or corrosion-resistant metal materials.
3. multi-channel membrane enriching apparatus according to claim 1, is characterized in that, described connecting tube is that the plastic flexible pipe in described hole is inserted in sealing, or height is glass tube or the plastic tube of 10～150mm.
4. multi-channel membrane enriching apparatus according to claim 1, is characterized in that, described enrichment filter membrane covers the whole lower end of hyperchannel entering apparatus, makes all samples solution all can be by enrichment filter membrane.
5. multi-channel membrane enriching apparatus according to claim 4, it is characterized in that, described enrichment filter membrane is one or more of cellulose acetate membrane, cellulose mixture film, nitrocellulose filter, glass fibre element film, nylon membrane, poly (ether sulfone) film, poly tetrafluoroethylene, polyvinylidene fluoride film and polyamide membrane.
6. multi-channel membrane enriching apparatus according to claim 1, is characterized in that, described filtrate container is the container of glass, plastics or corrosion resistant metal.
7. multi-channel membrane enriching apparatus according to claim 6, is characterized in that, the volume of described filtrate container should be able to take up all filtrates of an enrichment.
8. multi-channel membrane enriching apparatus according to claim 1, is characterized in that, it is that 20～200mm, aperture are the sand core structure of 1～30 μ m that described micropore filter element upper end arranges diameter.
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| CN201410131638.9A CN103940660A (en) | 2014-04-03 | 2014-04-03 | Multichannel membrane enrichment device |
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| CN201410131638.9A CN103940660A (en) | 2014-04-03 | 2014-04-03 | Multichannel membrane enrichment device |
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Cited By (8)
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| CN105784441A (en) * | 2016-03-15 | 2016-07-20 | 华东理工大学 | Magnetic membrane enrichment and separation device and using method thereof in solid phase spectrum detection |
| CN107389851A (en) * | 2017-07-10 | 2017-11-24 | 中国环境科学研究院 | It is a kind of to analyze the molten experimental provision of sediment turbid liquid and its experimental method and application |
| CN110938518A (en) * | 2019-10-24 | 2020-03-31 | 中山大学 | Filtering device and method for microbial enzyme activity test |
| CN111081408A (en) * | 2019-12-04 | 2020-04-28 | 中国工程物理研究院核物理与化学研究所 | Device for producing α source through microfiltration and method for producing α source through microfiltration |
| CN113340701A (en) * | 2021-06-08 | 2021-09-03 | 天津工业大学 | Enrichment detection device and enrichment detection method for scale inhibitor in water |
| CN113996181A (en) * | 2021-11-29 | 2022-02-01 | 中量大黄山高质量发展研究院有限公司 | Filter and enrichment equipment |
| CN114062575A (en) * | 2021-11-29 | 2022-02-18 | 杭州富集生物科技有限公司 | Enrichment equipment and multi-sample continuous automatic enrichment method |
| CN114544846A (en) * | 2022-02-24 | 2022-05-27 | 河海大学 | Resistance gene research method under influence of tide in coastal region and solid phase extraction instrument |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784441A (en) * | 2016-03-15 | 2016-07-20 | 华东理工大学 | Magnetic membrane enrichment and separation device and using method thereof in solid phase spectrum detection |
| CN105784441B (en) * | 2016-03-15 | 2018-11-30 | 华东理工大学 | Magnetic-type film enrichment and separation device and its application method in solid phase spectra detection |
| CN107389851A (en) * | 2017-07-10 | 2017-11-24 | 中国环境科学研究院 | It is a kind of to analyze the molten experimental provision of sediment turbid liquid and its experimental method and application |
| CN107389851B (en) * | 2017-07-10 | 2018-05-29 | 中国环境科学研究院 | A kind of experimental provision for analyzing sediment turbid liquid and its experimental method and application |
| CN110938518A (en) * | 2019-10-24 | 2020-03-31 | 中山大学 | Filtering device and method for microbial enzyme activity test |
| CN111081408A (en) * | 2019-12-04 | 2020-04-28 | 中国工程物理研究院核物理与化学研究所 | Device for producing α source through microfiltration and method for producing α source through microfiltration |
| CN113340701A (en) * | 2021-06-08 | 2021-09-03 | 天津工业大学 | Enrichment detection device and enrichment detection method for scale inhibitor in water |
| CN113340701B (en) * | 2021-06-08 | 2023-02-21 | 天津工业大学 | Enrichment detection device and enrichment detection method for scale inhibitor in water |
| CN113996181A (en) * | 2021-11-29 | 2022-02-01 | 中量大黄山高质量发展研究院有限公司 | Filter and enrichment equipment |
| CN114062575A (en) * | 2021-11-29 | 2022-02-18 | 杭州富集生物科技有限公司 | Enrichment equipment and multi-sample continuous automatic enrichment method |
| CN113996181B (en) * | 2021-11-29 | 2024-02-27 | 中量大黄山高质量发展研究院有限公司 | Filter and enrichment device |
| CN114544846A (en) * | 2022-02-24 | 2022-05-27 | 河海大学 | Resistance gene research method under influence of tide in coastal region and solid phase extraction instrument |
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