CN101231220B - Passive atmospheric aerosol individual sampler - Google Patents
Passive atmospheric aerosol individual sampler Download PDFInfo
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- CN101231220B CN101231220B CN2007101706341A CN200710170634A CN101231220B CN 101231220 B CN101231220 B CN 101231220B CN 2007101706341 A CN2007101706341 A CN 2007101706341A CN 200710170634 A CN200710170634 A CN 200710170634A CN 101231220 B CN101231220 B CN 101231220B
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Abstract
The invention relates to a passive atmosphere aerosol personal sampler, comprising a shell, a sampling film arranged inside the shell, an external ring arranged inside the shell and a built-in base positioned inside the external ring, wherein, the external ring, the built-in base and the shell are arranged concentrically; the external ring is connected with the shell in a first axial direction and can rotate around the first axial direction freely relative to the shell; the built-in base is connected with the external ring in a second axial direction and can rotate around the second axial direction freely relative to the external ring; the first axial direction and the second axial direction are in the same plane and are orthogonal with each other. The whole of the sampler consists of three parts of the shell, the external ring and the built-in base. The three parts form a universal joint structure. When the shell is in any angle, the built-in base can be kept at the vertically outward position. The sampler has simple structure and is portable.
Description
Technical field
The present invention relates to a kind of passive type individual sampler that is used to gather atmospheric aerosol.
Background technology
Atmospheric aerosol is a kind of important form of atmospheric pollution.Gasoloid is except itself containing the poisonous material of human body (as PB, noxious metals elements such as AS) outside, also may in the propagation in atmosphere process, form secondary pollution (various sulfate, nitrate) and adsorb the various strong good objectionable impuritiess (as organic halogen compounds, bacterium and virus etc.) of human body that influence.Atmospheric aerosol has very little size (less than 100 microns) usually, so their free settlings not in atmosphere, can be suspended in the air for a long time, thereby the health of human body is caused long-term influence.
Gasoloid mainly contains health effects: suck and allergenic effect by respiratory tract.Because the gasoloid particle diameter is less, can go deep into respiratory tract and deposition.Studies show that both at home and abroad noxious material might enter blood and other organ by lung.Microorganisms such as various pollen and bacterium are the anaphylactogens of generally acknowledging, daily life is had very large influence.
Gasoloid in the research atmosphere is to the very significant problem of human health, and therefore accuracy, the validity to its sampling is one of crucial research topic.Present sample mode mainly can be divided into two kinds of active sampling and passive type samplings.Active sampling is used the aspiration pump suction air and with the gasoloid in filtering membrane, the filtrator entrapped air or utilize gas dynamics character to intercept the specified particle diameter gasoloid.The passive type sampling thief mainly utilizes the settling process of gasoloid in atmosphere, gathers the gasoloid that is deposited on the sampling film (plate).
Active sampling thief is to use sampling thief comparatively widely.Generally the particle in the atmosphere is sucked sampling thief with air, with various acquisition principle (specific) Atmospheric particulates are trapped in the sampling thief then, be used for further analysis by aspiration pump.Filter membrane method is two kinds of the most frequently used methods with utilizing aerodynamic principle.Filter membrane method uses filter membrane that airborne (specified particle diameter) particle is trapped on the filter membrane.Aerodynamic principle is a difference of utilizing different-grain diameter particle aerodynamic property, is trapped on the shock plate by the particle of inertial impaction principle with specified particle diameter.The advantage of this class sampling thief is can gather enough samples in the short relatively time to be used for its physicochemical property analysis.But because this class sampling thief needs the anoxic pump, so structure is comparatively complicated, is not easy to carry, and can not be used for individual's sampling.
The passive type sampling thief generally is the suspended particulate substance sampling to natural subsidence in the atmosphere.Owing to do not need propulsion system, the active sampling thief of texture ratio is simple, and price is also relatively cheap.Its structure is mainly formed (as housing, support etc.) by the sampling plate of accepting the particle sedimentation (or sampling thief film) and peripheral cum rights.
Individual's microenvironment is the hot subject that current atmospheric environment science is subjected to extensive concern.Wherein the individual of Atmospheric particulates exposes dosage to the open air and health affected is also received suitable concern.Carrying out this type of research requires sampling thief can gather the atmospheric aerosol samples of individual place environment portable, exactly.Existing individual microenvironment sampling thief is generally all based on the active method of sampling, though the structure of sampling thief and weight all are greatly improved, but still inconvenience is carried sampling for a long time.But domestic passive type sampling thief generally all is used for grab sampling at present, and the sampling thief that is specifically designed to the personal portable sampling is not arranged at present as yet.Therefore, passive atmospheric aerosol individual sampler becomes an urgent demand of this area research at present.
Summary of the invention
The objective of the invention is needs, a kind of portable aerosol individual sampler is provided at current individual microenvironment research.This sampling thief can be collected the atmosphere suspended particulate substance, can be with the aerocolloidal settling character of optics microscopic study, excite element in the X fluorescence measurement individual particle gasoloid to distribute or measure anaphylactogen in the individual particle gasoloid and microbiologic properties etc. with biochemical method with microbeam fluorescence or proton.
In order to achieve the above object, technical scheme of the present invention is as follows:
A kind of passive atmospheric aerosol individual sampler comprises housing and is arranged on the interior sampling film of housing; This sampling thief also comprises the outer shroud in the housing and places the interior built-in seat of outer shroud that outer shroud, built-in seat and housing are provided with one heart; Outer shroud links to each other with housing on axially first and also can axially freely rotate around first with respect to housing; Built-in seat second link to each other with outer shroud on axially also can with respect to outside axially freely rotate around second; Described first axially axially is positioned at same plane and mutually orthogonal with second.
Above-mentioned sampling thief integral body is made up of housing, outer shroud and built-in seat three parts, and this three part constitutes gimbal structure.Housing is in when arbitrarily angled, and built-in seat can keep position straight up.This kind sampling thief is simple in structure, is easy to carry.
Described built-in seat comprises the through hole that a main body and seat main center offer; This sampling thief also comprises a sample holder, and described sample holder is made of bottom cylindrical member and upper flat plate one, and described bottom cylindrical member is inserted in the described through hole.
Described sampling film is pressed on the upper flat plate of sample holder by polytetrafluoroethylene gasket and fixator.
In the described through hole, be provided with spring between described bottom cylindrical member and the seat main body.Automatically pulling structure is adopted in the sample holder.Take off or when changing sample, open sampling film fixator and polytetrafluoroethylene gasket after, the sample holder is ejected automatically.
The cylindrical member end is provided with a limiter in the bottom of sample holder, in order to the ejection height of restriction sample holder.
For improving collecting efficiency, one deck mineral oil or medical ventolin are evenly smeared in the sampling film surface, are used to adhere to the heavy molten aerosol particle that drops to the sampling film surface of gas.
Description of drawings
Fig. 1 is a passive atmospheric aerosol individual sampler agent structure sectional view of the present invention;
Fig. 2 is gimbal structure figure in the passive atmospheric aerosol individual sampler of the present invention;
Fig. 3 is a universal joint functional schematic in the passive atmospheric aerosol individual sampler of the present invention.
Embodiment
According to Fig. 1 to Fig. 3, provide preferred embodiment of the present invention, and described in detail below, enable to understand better function of the present invention, characteristics.
Fig. 1 is an agent structure sectional view of the present invention, and it has set forth ultimate principle of the present invention and each several part title and effect.Sampling thief integral body is made up of housing 1, outer shroud 2 and built-in seat 3 three parts, and housing 1 is positioned at outermost, is outer shroud 2 in it, is built-in seat 3 in the outer shroud, and outer shroud 2, built-in seat 3 and housing 1 are provided with one heart, and this three part constitutes gimbal structure.Housing 1 is in when arbitrarily angled, built-in seat 3 positions that can keep straight up.Gimbal structure is explanation in addition in Fig. 2.Built-in seat 3 is cores of sampling thief, comprises the through hole 32 that a main body 31 and seat main body 31 centers are offered.This sampling thief also comprises a sample holder 6, and described sample holder 6 is made of bottom cylindrical member 62 and upper flat plate 61 one, and described bottom cylindrical member 62 is inserted in the described through hole 32.
Described sampling film 7 is pressed on the upper flat plate 61 of sample holder 6 by polytetrafluoroethylene gasket 4 and fixator 5.In the described through hole 32, be provided with spring 8 between described bottom cylindrical member 61 and the seat main body 31.Automatically pulling structure is adopted in sample holder 6.Spring 8 is compressed in the time of in working order, opens sampling film fixator 5 when getting sampling film 7 or changing sampling film 7, sample holder 6 is lifted to the position that is higher than built-in seat 3 edges by spring 8.Cylindrical member 61 ends have a limiter 9 in the bottom of sample holder 6, are used to limit the maximum ejected position of sample holder 6, prevent that sample holder 6 from coming off or sampling film 7 is ejected.
For improving collecting efficiency, one deck mineral oil or medical ventolin are evenly smeared in sampling film 7 surfaces, are used to adhere to the heavy molten aerosol particle that drops to the sampling film surface of gas.
Fig. 2 is gimbal structure figure.For guaranteeing the consistance of sampling condition, sampling film must be all the time straight up in sampling process.Adopt gimbal structure to finish this technical requirement in the present invention.As shown in the figure, outer shroud 2 links to each other with housing 1 in axle A direction, can freely rotate around axle A with respect to housing, and built-in seat 3 links to each other with outer shroud 2 in axle B direction, and can freely rotate around the B axle with respect to outer shroud 2.Axle A and axle B are in same plane, and be and mutually orthogonal.
Fig. 3 is the synoptic diagram of universal joint effect.When housing 1 run-off the straight, under the influence of built-in seat 3 gravity, outer shroud 2 departs from certain angle separately with housing 1 and built-in seat 3, and built-in seat 3 is remained vertically.
The about 45g of sampling thief quality of the present invention, maximum gauge 36mm, high 40mm
Efficiently sampling area 200mm
2, simple in structure, be easy to carry.
The front provides the description to preferred embodiment, so that any technician in this area can use or utilize the present invention.To this preferred embodiment, those skilled in the art can make various modifications or conversion on the basis that does not break away from the principle of the invention.Should be appreciated that these modifications or conversion do not break away from protection scope of the present invention.
Claims (5)
1. a passive atmospheric aerosol individual sampler comprises housing and is arranged on the interior sampling film of housing; It is characterized in that this sampling thief also comprises the outer shroud in the housing and place the interior built-in seat of outer shroud that outer shroud, built-in seat and housing are provided with one heart; Outer shroud links to each other with housing on axially first and also can axially freely rotate around first with respect to housing; Built-in seat second link to each other with outer shroud on axially also can with respect to outside axially freely rotate around second; Described first axially axially is positioned at same plane and mutually orthogonal with second, and described built-in seat comprises the through hole that a main body and seat main center offer; This sampling thief also comprises a sample holder, and described sample holder is made of bottom cylindrical member and upper flat plate one, and described bottom cylindrical member is inserted in the described through hole.
2. passive atmospheric aerosol individual sampler as claimed in claim 1 is characterized in that, described sampling film is pressed on the upper flat plate of sample holder by polytetrafluoroethylene gasket and fixator.
3. passive atmospheric aerosol individual sampler as claimed in claim 2 is characterized in that, in the described through hole, is provided with spring between described bottom cylindrical member and the seat main body.
4. passive atmospheric aerosol individual sampler as claimed in claim 3 is characterized in that the cylindrical member end is provided with a limiter in the bottom of sample holder, in order to the ejection height of restriction sample holder.
5. as the described passive atmospheric aerosol individual sampler of arbitrary claim in the claim 1 to 4, it is characterized in that one deck mineral oil or medical ventolin are evenly smeared in described sampling film surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101706341A CN101231220B (en) | 2007-11-20 | 2007-11-20 | Passive atmospheric aerosol individual sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101706341A CN101231220B (en) | 2007-11-20 | 2007-11-20 | Passive atmospheric aerosol individual sampler |
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| Publication Number | Publication Date |
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| CN101231220A CN101231220A (en) | 2008-07-30 |
| CN101231220B true CN101231220B (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101706341A Active CN101231220B (en) | 2007-11-20 | 2007-11-20 | Passive atmospheric aerosol individual sampler |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841001A (en) * | 2012-09-20 | 2012-12-26 | 北京大学 | Mineral oil film-based bio-aerosol sampling method |
| CN107192587A (en) * | 2017-05-04 | 2017-09-22 | 北京大学 | A kind of bioaerosol liquid phase acquisition method of portable big flow height enrichment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6321608B1 (en) * | 2000-04-07 | 2001-11-27 | The University Of North Carolina - Chapel Hill | Passive aerosol sampler and methods |
| CN1695771A (en) * | 2005-03-25 | 2005-11-16 | 清华大学 | Sampler for aerosol granules |
| CN2760541Y (en) * | 2004-12-08 | 2006-02-22 | 中国科学院安徽光学精密机械研究所 | Aerosol particle separation sampler |
-
2007
- 2007-11-20 CN CN2007101706341A patent/CN101231220B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6321608B1 (en) * | 2000-04-07 | 2001-11-27 | The University Of North Carolina - Chapel Hill | Passive aerosol sampler and methods |
| CN2760541Y (en) * | 2004-12-08 | 2006-02-22 | 中国科学院安徽光学精密机械研究所 | Aerosol particle separation sampler |
| CN1695771A (en) * | 2005-03-25 | 2005-11-16 | 清华大学 | Sampler for aerosol granules |
Non-Patent Citations (4)
| Title |
|---|
| Jeff Wanger ,David Leith.Field tests of a passive aerosol sampler.Aerosol Science32.2001,3233-48. |
| Jeff Wanger ,David Leith.Passive Aerosol Sampler. Part I: Principle of Operation.Aerosol Science and Technology34.2001,34186-192. |
| Jeff Wanger,David Leith.Field tests of a passive aerosol sampler.Aerosol Science32.2001,3233-48. * |
| Jeff Wanger,David Leith.Passive Aerosol Sampler. Part I: Principle of Operation.Aerosol Science and Technology34.2001,34186-192. * |
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| CN101231220A (en) | 2008-07-30 |
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