CN220671044U - Passive sampling film for particulate matters - Google Patents
Passive sampling film for particulate matters Download PDFInfo
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- CN220671044U CN220671044U CN202321780207.6U CN202321780207U CN220671044U CN 220671044 U CN220671044 U CN 220671044U CN 202321780207 U CN202321780207 U CN 202321780207U CN 220671044 U CN220671044 U CN 220671044U
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- 238000005070 sampling Methods 0.000 title claims abstract description 52
- 239000012528 membrane Substances 0.000 claims abstract description 39
- 238000004458 analytical method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000011156 evaluation Methods 0.000 abstract description 6
- 239000013618 particulate matter Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000004364 calculation method Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000006855 networking Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a passive particulate sampling membrane, which comprises a sample nail, a membrane, a net cap and a net sheet; the net cap is provided with a containing cavity which penetrates through the containing cavity, the membrane is covered on the top of the sample nail, the lower end opening end of the net cap is buckled on the membrane on the top of the sample nail, the upper end opening end of the net cap is covered with the net sheet, and a plurality of net holes are formed in the net sheet. The technical effects achieved are as follows: the device fills the blank of passive particulate matter sampling films in China; the device is suitable for passive collection of environmental particulate matters in all scenes, and is convenient and simple to install; the method is convenient for gridding networking and long-term and regional evaluation of particulate pollution; the sampling film can be directly used for electron microscope analysis, so that a complex pretreatment flow is avoided; the sampling membrane net cap can be reused, so that the sampling cost is greatly reduced; and in the aspects of the size, the distribution and the like of the meshes of the sampling membrane net cap, the fine and accurate sample collection is ensured through strict aerodynamic calculation and evaluation.
Description
Technical Field
The utility model relates to the technical field of atmospheric particulate sampling and detection, in particular to a particulate passive sampling membrane which is used for analyzing and detecting the morphology and chemical components of particulate.
Background
At present, a scientific and effective passive sampling method and an adaptive sampling film thereof are lacking; the prior art has the following defects:
1. the existing single particle sampling technology mainly comprises active sampling, short sampling time and poor representativeness;
2. the existing active sampling technology needs to be provided with a special sampling instrument, has high cost and cannot be widely distributed;
3. the sampling film selected by the existing active sampling technology needs to be stuck on site and a complex pretreatment process, and cannot be used for electron microscope analysis conveniently and rapidly;
4. the sampling film selected in the prior art cannot be suitable for multi-particle intelligent scanning electron microscope analysis.
Disclosure of Invention
Therefore, the present utility model provides a passive particulate sampling membrane to solve the above-mentioned problems in the prior art.
In order to achieve the above object, the present utility model provides the following technical solutions:
according to a first aspect of the utility model, a passive particulate sampling membrane comprises a sample pin, a membrane sheet, a net cap and a net sheet; the net cap is provided with a containing cavity which penetrates through the containing cavity, the membrane is covered on the top of the sample nail, the lower end opening end of the net cap is buckled on the membrane on the top of the sample nail, the upper end opening end of the net cap is covered with the net sheet, and a plurality of net holes are formed in the net sheet.
Further, the device also comprises a screw, and the net cap and the sample nail are fixed through the screw.
Further, the screw is a cross head screw.
Further, the diameter of the sample pin was 12.7mm.
Further, the diameter of the net cap is 13mm-17mm.
Further, the diameter of the net cap is 15mm.
Further, the mesh is a conical round hole.
Further, the lower end of the sample nail is provided with a conical head.
Further, the net cap is detachably arranged on the sample nail.
The utility model has the following advantages: the device is used for passive collection of atmospheric particulates and is suitable for a special passive sampler. Through sedimentation and adsorption principle, the surface of the diaphragm is collected with environmental particles, and the collected diaphragm and sample nails can be directly placed into a scanning electron microscope for intelligent analysis of a large number of particles. In addition, a special net cap is designed for avoiding the pollution of other scraps or insects to the surface of the membrane; the device fills the blank of passive particulate matter sampling films in China; the device is suitable for passive collection of environmental particulate matters in all scenes, and is convenient and simple to install; the method is convenient for gridding networking and long-term and regional evaluation of particulate pollution; the sampling film can be directly used for electron microscope analysis, so that a complex pretreatment flow is avoided; the sampling membrane net cap can be reused, so that the sampling cost is greatly reduced; and in the aspects of the size, the distribution and the like of the meshes of the sampling membrane net cap, the fine and accurate sample collection is ensured through strict aerodynamic calculation and evaluation.
Drawings
Fig. 1 is a cross-sectional view of a passive particulate sampling membrane according to some embodiments of the present utility model.
Fig. 2 is a perspective view of a first view of a passive particulate sampling film according to some embodiments of the present utility model.
Fig. 3 is a second perspective view of a passive sampling film for particulate matter according to some embodiments of the present utility model.
Fig. 4 is a front view of a passive particulate sampling membrane according to some embodiments of the present utility model.
Fig. 5 is a top view of a passive sampling membrane for particulate matter according to some embodiments of the present utility model.
In the figure: 1. sample nail 2, diaphragm 3, net cap 4, net piece 5, mesh 6, screw.
Detailed Description
Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1 to 5, a passive particulate sampling membrane according to an embodiment of the first aspect of the present utility model includes a sample nail 1, a membrane sheet 2, a net cap 3 and a net sheet 4; the net cap 3 is provided with a through accommodating cavity, the top of the sample nail 1 is covered with a membrane 2, the lower open end of the net cap 3 is buckled on the membrane 2 at the top of the sample nail 1, the upper open end of the net cap 3 is covered with a net sheet 4, and the net sheet 4 is provided with a plurality of net holes 5.
In the above embodiment, it should be noted that a special membrane is attached to the top surface of the sample nail 1; the multiple meshes 5 are designed, and the sizes and arrangement of the meshes 5 are calculated aerodynamically, so that the collection requirement of particles with specific sizes is met.
The technical effects achieved by the embodiment are as follows: the device is used for passive collection of atmospheric particulates and is suitable for a special passive sampler. Through sedimentation and adsorption principle, the surface of the diaphragm is collected with environmental particles, and the collected diaphragm can be directly put into a scanning electron microscope for intelligent analysis of a large number of particles. In addition, a special net cap is designed for avoiding the pollution of other scraps or insects to the surface of the membrane; the device fills the blank of passive particulate matter sampling films in China; the device is suitable for passive collection of environmental particulate matters in all scenes, and is convenient and simple to install; the method is convenient for gridding networking and long-term and regional evaluation of particulate pollution; the sampling film can be directly used for electron microscope analysis, so that a complex pretreatment flow is avoided; the sampling membrane net cap can be reused, so that the sampling cost is greatly reduced; and in the aspects of the size, the distribution and the like of the meshes of the sampling membrane net cap, the fine and accurate sample collection is ensured through strict aerodynamic calculation and evaluation.
Example 2
As shown in fig. 1 to 5, a passive particulate sampling film includes the whole contents of embodiment 1, and further includes a screw 6, and the mesh cap 3 and the sample nail 1 are fixed by the screw 6.
Optionally, the screw 6 is a cross-head screw; the screw 6 may be a screw in the form of a straight head, a hexagon socket, or the like.
The technical effects achieved by the embodiment are as follows: by arranging the screw 6, the rapid installation between the net cap 3 and the sample nail 1 is facilitated.
Example 3
As shown in fig. 1 to 5, a passive sampling membrane for particulate matter, including the whole contents of example 2, further, the diameter of the sample pin 1 was 12.7mm.
Optionally, the net cap 3 has a diameter of 13mm-17mm.
For example, the diameter of the net cap 3 is 15mm, and the specific value of the diameter of the net cap 3 is set according to actual requirements.
The technical effects achieved by the embodiment are as follows: by setting the size, the standardized production degree of the device is improved.
Example 4
As shown in fig. 1 to 5, a passive particulate sampling membrane includes the whole contents of example 3, and further, the mesh 5 is a conical circular hole; in addition, the mesh 5 may be of other hole types.
For example, the mesh 5 has a trapezoid cross section, a pore diameter of 140-250 microns, adjacent pores are distributed in an equilateral triangle shape, and the distance is about 600 microns.
The technical effects achieved by the embodiment are as follows: by arranging the mesh 5 as conical round holes, the difficulty of processing is significantly reduced.
Example 5
As shown in fig. 1 to 5, a passive particulate sampling membrane, including the whole contents of example 4, was provided with a conical head at the lower end of the sample pin 1.
The technical effects achieved by the embodiment are as follows: by arranging the conical head, the rapid insertion of the sample nail is facilitated.
Example 6
As shown in fig. 1 to 5, a passive particulate sampling film, including the whole contents of example 5, further, a net cap 3 is detachably provided on the sample nail 1.
The technical effects achieved by the embodiment are as follows: through detachable setting, the quick replacement of net cap 3 has been made things convenient for.
In the description of the present utility model, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
In the description of the present specification, a description referring to terms "embodiment one", "embodiment two", "example", "specific example", or "some examples", etc., means that a specific method, apparatus, or feature described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, methods, apparatus, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing is only illustrative of the present utility model and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present utility model.
Claims (9)
1. The passive particulate sampling membrane is characterized by comprising a sample nail (1), a membrane (2), a net cap (3) and a net sheet (4); the utility model discloses a sample nail, including sample nail (1), sample nail (3), net cap (3) have the holding chamber that runs through, the top of sample nail (1) is covered with diaphragm (2), the open end of lower extreme of net cap (3) is detained and is established on diaphragm (2) at sample nail (1) top, the open end of upper end of net cap (3) is covered with net piece (4), a plurality of mesh (5) have been seted up to net piece (4).
2. A passive particulate sampling membrane according to claim 1, further comprising a screw (6), wherein the cap (3) and the sample spike (1) are secured by the screw (6).
3. A passive particulate sampling membrane according to claim 2, characterized in that the screw (6) is a cross-head screw.
4. A passive particulate sampling membrane according to claim 1, characterized in that the diameter of the sample spike (1) is 12.7mm.
5. A passive particulate sampling membrane according to claim 4, wherein the mesh cap (3) has a diameter of 13mm-17mm.
6. A passive particulate sampling membrane according to claim 5, characterized in that the mesh cap (3) has a diameter of 15mm.
7. A passive particulate sampling membrane according to claim 1, wherein the mesh (5) is conical round holes.
8. A passive particulate sampling membrane according to claim 1, characterized in that the lower end of the sample spike (1) is provided with a conical head.
9. A passive particulate sampling membrane according to claim 1, characterized in that the net cap (3) is detachably arranged on the sample spike (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321780207.6U CN220671044U (en) | 2023-07-07 | 2023-07-07 | Passive sampling film for particulate matters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321780207.6U CN220671044U (en) | 2023-07-07 | 2023-07-07 | Passive sampling film for particulate matters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220671044U true CN220671044U (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321780207.6U Active CN220671044U (en) | 2023-07-07 | 2023-07-07 | Passive sampling film for particulate matters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220671044U (en) |
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2023
- 2023-07-07 CN CN202321780207.6U patent/CN220671044U/en active Active
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