CN111624073A - Filter membrane sample pretreatment device and method - Google Patents
Filter membrane sample pretreatment device and method Download PDFInfo
- Publication number
- CN111624073A CN111624073A CN202010620561.7A CN202010620561A CN111624073A CN 111624073 A CN111624073 A CN 111624073A CN 202010620561 A CN202010620561 A CN 202010620561A CN 111624073 A CN111624073 A CN 111624073A
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- Prior art keywords
- piston
- filter
- sample
- filter membrane
- filtering
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- 239000012528 membrane Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 43
- 238000000605 extraction Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims description 74
- 238000005070 sampling Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 238000002137 ultrasound extraction Methods 0.000 claims description 4
- 239000012466 permeate Substances 0.000 claims description 3
- 239000012488 sample solution Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000009210 therapy by ultrasound Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000002203 pretreatment Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N2015/0687—Investigating concentration of particle suspensions in solutions, e.g. non volatile residue
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- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a filter membrane sample pretreatment device and a method thereof, relates to the field of environment detection devices, and particularly relates to a filter membrane sample pretreatment device. Including the extraction tube, filter piston and advance appearance pipe, place the extraction tube in the filter piston in, advance appearance pipe and filter piston can dismantle with being connected, be provided with the filter core in the filter piston. The invention can solve the problems that the sample liquid is easy to pollute and the detection result is influenced due to the traditional filter membrane sample pretreatment mode, and the sample liquid flows out and is not filtered smoothly. Through the matching installation of the extraction pipe, the filtering piston and the sample inlet pipe, the filtering process is smooth, the outflow of sample liquid can be avoided, the sample ultrasonic treatment and the filtering are integrated, the sample liquid is reduced from being transferred for many times, the pollution is reduced, and the filtering time is shortened; the separation design of filtering piston and filter core can realize filtering the used repeatedly of piston, reduces the consumptive material, effective reduce cost.
Description
Technical Field
The invention relates to the field of environment detection devices, in particular to a filter membrane sample pretreatment device and a filter membrane sample pretreatment method.
Background
The filter membrane sample analysis is an important content in the field of environmental atmosphere detection, particulate matters in environmental air are enriched on a filter membrane through pump pressure, then components (such as soluble anions and cations) enriched on the filter membrane sample are extracted into a solution by means of ultrasound and the like, and an instrument is used for measuring, so that the concentration of the components in the atmospheric particulate matters can be calculated.
When extracting components on a filter membrane sample, the ultrasonic extraction pretreatment method is widely used, the process is that the filter membrane is firstly placed in a PP centrifugal tube with a screw cap for ultrasonic treatment, a disposable syringe is used for extracting extract after the ultrasonic treatment is finished, the extract is filtered to an instrument sample inlet tube through a filter head, and then the extract is injected into an instrument for analysis, but the process has the following problems: 1. the transfer of the sample liquid for many times is easy to introduce pollution, and the detection result is influenced; 2. when the injector is used for filtering, the injector and the filter head are in a non-tight connection structure, so that sample liquid is easy to flow out and the filtering is not smooth.
Disclosure of Invention
The invention aims to provide a filter membrane sample pretreatment device and a filter membrane sample pretreatment method, which are used for solving the problems that sample liquid is easy to pollute and the detection result is influenced and the sample liquid flows outwards and is not filtered smoothly in the conventional filter membrane sample pretreatment mode.
In order to achieve the above purpose, the invention mainly provides the following technical scheme:
in a first aspect, the invention provides a filter membrane sample pretreatment device,
including the extraction tube, filter piston and advance appearance pipe, place the extraction tube in the filter piston in, advance appearance pipe and filter piston can dismantle with being connected, be provided with the filter core in the filter piston.
Further, the filtering piston comprises a threaded connection part and a piston connection part, the threaded connection part and the piston connection part are integrally formed, and the diameter of the piston connection part is equal to the inner diameter of the extraction pipe.
Further, the diameter of the threaded connection part is smaller than that of the piston connection part, and an external thread is arranged outside the threaded connection part and used for connecting the sampling tube.
Further, the center of the filtering piston is provided with a filter element groove, and the filter element groove is used for installing a filter element.
Further, the filter element comprises an extension part and a base, and the extension part and the base are integrally formed.
Furthermore, the filter element is made of hydrophilic materials.
Further, the inside internal thread that is provided with of the mouth of pipe of advancing the appearance pipe for connect and filter the piston, it is provided with the scale to advance the appearance pipe.
In a second aspect, the invention also provides a filter membrane sample pretreatment method,
the method comprises the following steps: placing a filter membrane sample in an extraction tube, adding an extracting solution, plugging a filter piston provided with a filter element into the extraction tube, and performing ultrasonic extraction on the filter membrane sample by using an ultrasonic device to form a sample solution; after extraction is finished, the sample inlet pipe is rotatably connected with the filtering piston, the sample inlet pipe is held tightly to push the filtering piston downwards, so that sample liquid permeates into the sample inlet pipe through the filter element, and sample liquid with a certain volume is obtained; and inverting the filter membrane sample pretreatment device, rotating the sample injection tube to separate the sample injection tube from the filtering piston, and measuring the sample liquid in the sample injection tube.
The technical scheme provided by the invention at least has the following advantages:
according to the invention, through the matching installation of the extraction pipe, the filtering piston and the sample inlet pipe, the filtering process is smooth, the outflow of sample liquid can be avoided, the sample ultrasonic treatment and the filtering are integrated, the sample liquid transfer is reduced for multiple times, the pollution is reduced, and the filtering time is shortened; the separation design of filtering piston and filter core can realize filtering the used repeatedly of piston, reduces the consumptive material, effective reduce cost.
Drawings
FIG. 1 is a schematic view of the overall structure of a filter membrane sample pretreatment apparatus according to the present invention.
Fig. 2 is a schematic structural diagram of an extraction tube provided by the present invention.
Fig. 3 is a schematic structural diagram of a filter piston provided by the present invention.
Fig. 4 is a schematic structural diagram of a filter element provided by the invention.
Fig. 5 is a schematic structural diagram of a sampling tube provided by the present invention.
In the figure: the device comprises an extraction pipe 1, a filtering piston 2, a sampling pipe 3, a threaded connection part 4, a piston connection part 5, a filter element groove 6, an extension part 7 and a base 8.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, interfaces, techniques, etc. in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The embodiment provides a filter membrane sample pretreatment device, refer to fig. 1, and the device mainly includes extraction tube 1, filters piston 2 and advances appearance pipe 3, places extraction tube 1 in filtering piston 2 in, filters and is provided with the filter core in the piston 2 for filter the appearance liquid, advances appearance pipe 3 and can dismantle with filtering piston 2 and be connected, be used for gathering the appearance liquid of a certain volume.
Preferably, referring to fig. 2, the extraction tube 1 has an inner diameter of 20mm and a height of 100mm, and is constructed of a circular tube made of PP.
Referring to fig. 3, the filtering piston 2 is integrally a cylindrical structure with a thin upper part and a thick lower part, and includes an upper threaded connection part 4 and a lower piston connection part 5, the threaded connection part 4 and the piston connection part 5 are integrally formed, the diameter of the threaded connection part 4 is smaller than that of the piston connection part 5, an external thread is arranged outside the threaded connection part 4 for connecting the sampling tube 3, and the diameter of the piston connection part 5 is equal to the inner diameter of the extraction tube 1. The filter piston 2 is preferably of PP material, the height of the threaded connection 4 being 5mm and the outer diameter 10 mm. The height of the piston connecting part 5 is 15mm, and the outer diameter is 20 mm. The center of the filtering piston 2 is provided with a hollow filter element groove 6, and the shape and the size of the filter element groove 6 are consistent with those of a filter element and are used for installing the filter element.
Referring to fig. 4, the filter element comprises an extension part 7 and a base 8, the extension part 7 and the base 8 are integrally formed, the inner diameter of the extension part 7 is 5mm, the height of the extension part is 17mm, the inner diameter of the base 8 is 10mm, the height of the base is 3mm, and the filter element is made of a hydrophilic material. The filter pore size of the filter element can be preferably selected to be 0.22 μm or 0.45 μm according to requirements.
Referring to fig. 5, an internal thread is provided inside the nozzle of the sampling tube 3 for connecting the filtering piston 2, and the sampling tube 3 is provided with a scale for measuring the volume of the sample liquid.
The device realizes the smoothness of the filtering process and can avoid the outflow of sample liquid by matching and installing the extraction pipe 1, the filtering piston 2 and the sample inlet pipe 3, integrates sample ultrasonic treatment and filtering, reduces the multiple transfer of the sample liquid, reduces pollution and shortens the filtering time; the separation design of the filter piston 2 and the filter element can realize the repeated use of the filter piston 2, reduce the material consumption and effectively reduce the cost.
In accordance with the above embodiments, the present embodiment provides a method for pre-treating a filter membrane sample, the method comprising:
placing a filter membrane sample in an extraction pipe 1, adding an extracting solution, plugging a filter piston 2 provided with a filter element into the extraction pipe 1 to seal the extraction pipe, and performing ultrasonic extraction on the filter membrane sample by using an ultrasonic device to form a sample solution;
after extraction is finished, the sample inlet pipe 3 is rotatably connected with the filtering piston 2, the sample inlet pipe 3 is held tightly to push the filtering piston 2 downwards, and when the filtering piston 2 contacts sample liquid, the sample liquid permeates into the sample inlet pipe 3 through the filter element to obtain the required sample liquid with a certain volume;
and (3) inverting the filter membrane sample pretreatment device, rotating the sampling tube 3 to separate the sampling tube from the filtering piston 2, and measuring the sample liquid in the sampling tube 3.
And after the measurement is finished, taking out the filtering piston 2, pulling out the filter element, and cleaning the filtering piston 2 for continuous use.
The embodiment can realize the smoothness of the filtering process, can avoid the outflow of the sample liquid, integrates the ultrasonic treatment and the filtering of the sample, reduces the multiple transfer of the sample liquid, reduces the pollution and shortens the filtering time; the separation design of the filter piston 2 and the filter element can realize the repeated use of the filter piston 2, reduce the material consumption and effectively reduce the cost.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a filter membrane sample pretreatment device, its characterized in that, includes the extraction tube, filters piston and advances appearance pipe, place the extraction tube in the filtration piston in, advance appearance pipe and filter the piston and can dismantle and be connected, be provided with the filter core in the filtration piston.
2. The filter membrane sample pretreatment device according to claim 1, wherein the filter piston comprises a screw thread connection portion and a piston connection portion, the screw thread connection portion and the piston connection portion are integrally formed, and a diameter of the piston connection portion is equal to an inner diameter of the extraction tube.
3. The filter membrane sample pretreatment device according to claim 2, wherein the threaded connection portion has a smaller diameter than the piston connection portion, and an external thread is provided on an outer portion of the threaded connection portion for connecting a sample introduction tube.
4. A filter membrane sample pretreatment device according to claim 1 or 2, wherein a filter element groove for installing a filter element is provided in a center of said filter piston.
5. The filter membrane sample pretreatment device of claim 1, wherein the filter element comprises an extension and a base, and the extension and the base are integrally formed.
6. The filter membrane sample pretreatment device of claim 1, wherein said filter element is made of a hydrophilic material.
7. The filter membrane sample pretreatment device according to claim 1, wherein an internal thread is provided inside the nozzle of the sampling tube for connecting the filter piston, and the sampling tube is provided with a scale.
8. A method for pretreatment of a filter membrane sample, the method comprising:
placing a filter membrane sample in an extraction tube, adding an extracting solution, plugging a filter piston provided with a filter element into the extraction tube, and performing ultrasonic extraction on the filter membrane sample by using an ultrasonic device to form a sample solution;
after extraction is finished, the sample inlet pipe is rotatably connected with the filtering piston, the sample inlet pipe is held tightly to push the filtering piston downwards, so that sample liquid permeates into the sample inlet pipe through the filter element, and sample liquid with a certain volume is obtained;
and inverting the filter membrane sample pretreatment device, rotating the sample injection tube to separate the sample injection tube from the filtering piston, and measuring the sample liquid in the sample injection tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010620561.7A CN111624073A (en) | 2020-07-01 | 2020-07-01 | Filter membrane sample pretreatment device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010620561.7A CN111624073A (en) | 2020-07-01 | 2020-07-01 | Filter membrane sample pretreatment device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111624073A true CN111624073A (en) | 2020-09-04 |
Family
ID=72258674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010620561.7A Pending CN111624073A (en) | 2020-07-01 | 2020-07-01 | Filter membrane sample pretreatment device and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN111624073A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364579A (en) * | 1971-04-29 | 1974-08-21 | Glasrock Products | Sampling and/or filtering method and apparatus |
| US4021352A (en) * | 1974-03-30 | 1977-05-03 | Walter Sarstedt Kunststoff-Spritzgusswerk | Filter device for separating blood fractions |
| US4035294A (en) * | 1975-05-23 | 1977-07-12 | Denver Chemical Manufacturing Company | Pressure differential filtering device and method |
| US4210623A (en) * | 1978-05-01 | 1980-07-01 | Owens-Illinois, Inc. | Fluid collection apparatus |
| GB2048097A (en) * | 1979-05-04 | 1980-12-10 | Owens Illinois Inc | Fluid Filtration and Collection Apparatus |
| US4962044A (en) * | 1988-04-25 | 1990-10-09 | Hoffmann-La Roche Inc. | Test tube filter/dispenser apparatus and method |
| US5549816A (en) * | 1995-10-31 | 1996-08-27 | Hach Company | Re-usable piston filter system |
| US20050045032A1 (en) * | 2003-08-27 | 2005-03-03 | Dasgupta Purnendu K. | Denuder assembly for collection and removal of soluble atmospheric gases |
| US20110100921A1 (en) * | 2008-05-17 | 2011-05-05 | Hans-Werner Heinrich | Device for Separating Particles in and from Liquids and Use of Said Device in Biotechnology, Biological Research, Diagnostics and the Treatment of Diseases |
| CN103175713A (en) * | 2013-03-01 | 2013-06-26 | 中国环境科学研究院 | Sample collecting and extracting method applicable to heavy metal analysis in atmospheric dry-wet deposition |
| CN103185756A (en) * | 2011-12-28 | 2013-07-03 | 中国石油天然气股份有限公司 | Sample pretreatment method for analysis of anions in alcohol amine solution |
| CN110220762A (en) * | 2019-06-21 | 2019-09-10 | 华南农业大学 | A kind of the urine examination pipe and its application method of quick filtering arena |
-
2020
- 2020-07-01 CN CN202010620561.7A patent/CN111624073A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364579A (en) * | 1971-04-29 | 1974-08-21 | Glasrock Products | Sampling and/or filtering method and apparatus |
| US4021352A (en) * | 1974-03-30 | 1977-05-03 | Walter Sarstedt Kunststoff-Spritzgusswerk | Filter device for separating blood fractions |
| US4035294A (en) * | 1975-05-23 | 1977-07-12 | Denver Chemical Manufacturing Company | Pressure differential filtering device and method |
| US4210623A (en) * | 1978-05-01 | 1980-07-01 | Owens-Illinois, Inc. | Fluid collection apparatus |
| GB2048097A (en) * | 1979-05-04 | 1980-12-10 | Owens Illinois Inc | Fluid Filtration and Collection Apparatus |
| US4962044A (en) * | 1988-04-25 | 1990-10-09 | Hoffmann-La Roche Inc. | Test tube filter/dispenser apparatus and method |
| US5549816A (en) * | 1995-10-31 | 1996-08-27 | Hach Company | Re-usable piston filter system |
| US20050045032A1 (en) * | 2003-08-27 | 2005-03-03 | Dasgupta Purnendu K. | Denuder assembly for collection and removal of soluble atmospheric gases |
| US20110100921A1 (en) * | 2008-05-17 | 2011-05-05 | Hans-Werner Heinrich | Device for Separating Particles in and from Liquids and Use of Said Device in Biotechnology, Biological Research, Diagnostics and the Treatment of Diseases |
| CN103185756A (en) * | 2011-12-28 | 2013-07-03 | 中国石油天然气股份有限公司 | Sample pretreatment method for analysis of anions in alcohol amine solution |
| CN103175713A (en) * | 2013-03-01 | 2013-06-26 | 中国环境科学研究院 | Sample collecting and extracting method applicable to heavy metal analysis in atmospheric dry-wet deposition |
| CN110220762A (en) * | 2019-06-21 | 2019-09-10 | 华南农业大学 | A kind of the urine examination pipe and its application method of quick filtering arena |
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