CN1808095A - Multi-channel PM2.5 particle sampler - Google Patents
Multi-channel PM2.5 particle sampler Download PDFInfo
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- CN1808095A CN1808095A CN 200510001785 CN200510001785A CN1808095A CN 1808095 A CN1808095 A CN 1808095A CN 200510001785 CN200510001785 CN 200510001785 CN 200510001785 A CN200510001785 A CN 200510001785A CN 1808095 A CN1808095 A CN 1808095A
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Abstract
The invention discloses a PM2.5 particulate mass sampler with four sampling channels: in the first sampling channel, the sampling head includes a PM2.5 cutter, a diffused solution container, Teflon filter membrane and nylon filter membrane; the sampling head in the second sampling channel includes a PM2.5 cutter and Teflon filter membrane; the sampling head in the third sampling channel includes PM2.5 cutter and two-layer quartz membrane; the sampling head in the forth sampling channel includes PM2.5 cutter and polycarbonate membrane.
Description
Technical field
The present invention relates to a kind of PM that is used to gather airborne fine particulate matter
2.5Particle sampler.
Background technology
PM
2.5Be meant that aerodynamic diameter is less than or equal to the Atmospheric particulates of 2.5 μ m, its wide material sources and chemical constitution are very complicated.According to the difference of research purpose, PM
2.5Sampling also corresponding with analytical approach varied.Increased newly about PM in the modification motion of EPA's particle standard in the surrounding air that proposed in 1997
2.5Standard, and determined federal recommend method (Federal Reference Method) and federal equivalent sampling method (Federal Equivalence Method).
PM
2.5Particle sampler is the equipment that carries out the airborne fine particulate matter sampling, and sampling thief generally includes sampling head, flow regulator and the air pump that is tightly connected.The workflow of sampling thief is: air pump forms negative pressure after starting in sampling head and flow regulator, atmosphere flows into sampling head immediately, and the various particles that carry in the air-flow are sampled head and are trapped on the sampling diaphragm that is provided with in the sampling head.After sampling finished, the researchist can take out the sampling diaphragm in the sampling head and carry out the analysis of particle.For different analysis purposes, sampling head has different structures usually, so that can sample the particle that adapts with analysis purpose.
Existing sampling thief is generally the single channel sampling thief, and this single channel sampling thief is to design at single analysis purpose, promptly only has a sampling head in sampling thief, realizes single sampling function.Like this, when the Atmospheric particulates to a certain area carry out multiple sampling and analyze, sample respectively with regard to many sampling thiefs of needs.But different sampling thiefs may be by different producer's designs and produce, make a plurality of sampling thiefs have certain difference usually on performance.Like this, just there is the difference of being brought by sampling thief performance difference in each sampled result of using many sampling thiefs to obtain inevitably, and brings error for follow-up particle analysis result.In addition, the sampling of using many sampling thiefs to carry out particle obviously also is inconvenient.
Therefore, just need the function that a kind of sampling thief can integrated multiple sampling thief, make a sampling thief realize multiple sampling purpose.
Further, in some occasion, for example in the research that Atmospheric particulates are polluted, need study pollution feature, origin analysis and the health and environment influence etc. of Atmospheric particulates, this just need accurately sample to the mass concentration of particle, various chemical constitution and microscopic appearance feature thereof etc. when the sampling of carrying out Atmospheric particulates and analysis and analyze, but so does not provide the sample devices of a kind of while at above-mentioned analysis purpose in the prior art.Therefore, also need a kind of sampling thief and can carry out the particle sampling at aforementioned analysis purpose.
Summary of the invention
The object of the present invention is to provide a kind of hyperchannel PM
2.5Particle sampler, this sampling thief can be realized multiple sampling purpose.
To achieve these goals, hyperchannel PM of the present invention
2.5Particle sampler comprises sampling head, flow regulator and air pump, wherein, described sampling thief comprises the first, second, third and the 4th sampling channel, each sampling channel all has a sampling head and a flow regulator respectively, and described first, second, third all is connected with air pump with the 4th sampling channel.First sampling channel has first sampling head, and described first sampling head comprises the PM that order is provided with
2.5Cutter, denuder, teflon filter membrane and nylon leaching film; Second sampling channel has second sampling head, and described second sampling head comprises the PM that order is provided with
2.5Cutter and teflon filter membrane; The 3rd sampling channel has the 3rd sampling head, and described the 3rd sampling head comprises the PM that order is provided with
2.5Cutter and two-layer quartzy filter membrane; The 4th sampling channel has the 4th sampling head, and described the 4th sampling head comprises the PM that order is provided with
2.5Cutter and polycarbonate leaching film.
Described flow regulator comprises throttle orifice, flow control valve, flowmeter and throttle orifice filtrator.Described sampling thief also comprises and is arranged on the bypass between sampling channel and the air pump and is arranged on flow control valve in the bypass.
Sampling thief of the present invention is for meeting PM
2.5The airborne fine particulate matter sampling thief of chemical species composition analysis, integrated a plurality of sampling channels in a sampling thief, can finish a plurality of sampling purposes with same sampling thief, can effectively reduce follow-up sampled result analytical error, and the user can select as required in the sampling thief one or more passage to sample.Hyperchannel PM of the present invention
2.5The fine particle of three sampling channel collections in the particle sampler is suitable for measuring the content of its mass concentration and conventional three kinds of chemical species compositions thereof, the fine particle sample of the 4th sampling channel collection is suitable for carrying out the pattern of individual particle and the analysis of the physicochemical property that become to grade, and this is specially adapted to the research of the microscopic feature of airborne fine particulate matter.
Description of drawings
Fig. 1 is hyperchannel PM of the present invention
2.5The structural representation of particle sampler.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 shows an embodiment of sampling thief of the present invention, has four sampling channels: first sampling channel 10, second sampling channel 20, the 3rd sampling channel 30 and the 4th sampling channel 40.Four sampling channels are connected with air pump 50 respectively.Sampling thief is when work, and air pump 50 is bled, and forms negative pressure in each sampling channel, and the atmosphere that carries particle is inhaled into each sampling channel.In one embodiment, these four sampling channels all move under design discharge 0.4l/min.These four sampling channels are respectively by the analysis purpose of collected sample: water-soluble component sampling channel, the plain sampling channel of inorganic multivariate, carbonaceous components sampling channel and individual particle sampling channel.
First sampling channel 10 is the water-soluble component sampling channel, and the aerosol sample of collection is mainly used in the analysis of water-soluble component (total particle nitrate and other zwitterion).First sampling channel 10 has first sampling head 11 and first flow control device 12.Wherein, the porch of first sampling head 11 is provided with 2.5 μ m particle diameter cutters of a collision type, enters the subsequent sampling system to guarantee the particle that has only aerodynamic diameter to be less than or equal to 2.5 μ m.After cutter, be provided with a smooth surface and scribble Na
2CO
3The foamed glass denuder of solution is used for absorbing air-flow sour gas SO
2, NO
x, HCl, HNO
3Reach organic acids such as formic acid, acetate.After the denuder is teflon (Teflon) filter membrane, to collect the PM in the air-flow
2.5Particle.Establish one after the teflon filter membrane and be weakly alkaline nylon leaching film, in order to collect nitrate ion and other volatile species that from preposition teflon filter membrane sample, volatilizes.Wherein, in first sampling head 11, cutter adopts teflon but not aluminium is material because aluminium can with sour gas SO in the gas phase
2, NO
x, HCl, HNO
3Influence half volatile component NH in the particle Deng reacting
4NO
3Gas-solid equilibrium, and the partition equilibrium of half volatile component between particulate form and gaseous state may be affected in sampling process and cause the volatilization of granulating material or the absorption of gaseous material, and therefore causes sampling error.PM
2.5Middle absorption and the volatilization problem of half volatile inorganic component (mainly being ammonium nitrate) in sampling process can be solved preferably by first sampling head 11 of the present invention.
Second sampling channel 20 is the plain sampling channel of inorganic multivariate, and the fine particle sample of collection is used for the analysis that mass concentration is measured (analysis of weighing) and inorganic multivariate element.Second sampling channel 20 has second sampling head 21 and second volume control device 22.Wherein, the porch of second sampling head 21 is provided with the collision type 2.5 μ m particle diameter cutters of an aluminium matter.After cutter, be provided with a teflon filter membrane, to collect the PM in the air-flow
2.5Particle.
The 3rd sampling channel 30 is the carbonaceous components sampling channel.The 3rd sampling channel 30 has the 3rd sampling head 31 and the 3rd volume control device 32.Wherein, the porch of the 3rd sampling head 31 is provided with the collision type 2.5 μ m particle diameter cutters of an aluminium matter, after cutter, be provided with quartz fibre filter membrane two serial connections, pre-burning, the sample of preposition quartzy filter membrane collection is used to measure organic carbon and inorganic carbon, and the sample of rearmounted quartzy filter membrane collection then is used to estimate organic measuring error.
The 4th sampling channel 40 is the individual particle sampling channel.The 4th sampling channel 40 has the 4th sampling head 41 and the 4th volume control device 42.Wherein, the porch of the 4th sampling head 41 is provided with the collision type 2.5 μ m particle diameter cutters of an aluminium matter, is provided with a polycarbonate leaching film after cutter, and the sample of its collection is used for the pattern of analysis list particle and the analysis of the physicochemical property that become to grade.
In first sampling head 11, second sampling head 21 and the 3rd sampling head 31, the aperture of teflon filter membrane (TeflonTM#R2PJ047) is that the aperture of 2 μ m, nylon leaching film (#66509) and quartz fibre filter membrane (#2500QAT-UP) is 1 μ m, the filter membrane diameter is 47mm, under the situation of design discharge 0.4l/min to PM
2.5The arresting efficiency of particle can reach more than 99.99%.
As shown in Figure 1, in each sampling channel, pass through the volume control device 12,22,32 and the 42 back inflow air pumps 50 of its corresponding sampling channel separately from the air-flow of sampling head 11,21,31 and 41 outlet outflows.And volume control device 12,22,32 and 42 is respectively applied for the air flow rate in the corresponding sampling channel of control.
The volume control device 12,22,32 of each passage has identical structure with 42, illustrates with first flow control device 12 below.As shown in Figure 1, the lower end of first flow control device 12 comprises a throttle orifice 13, and the throttle orifice of this throttle orifice 13 and other volume control devices 22,32,42 is used to regulate the flow equilibrium of each sampling channel.In first flow control device 12, also be provided with flow control valve 14 and flowmeter 15 on the throttle orifice 13, wherein, flow control valve 14 is used for the fine setting of channel capacity, and the gas flow that flowmeter 15 is used to measure and display channel is interior.The upper end of first flow control device 12 also is provided with a filtrator 16, and this filtrator 16 is used to protect flowmeter 15, flow control valve 14 and throttle orifice 13 to exempt from dust pollution when sampling thief is unkitted the sampling membrane operation.As shown in Figure 1, similar with first flow control device 12, second volume control device 22, the 3rd volume control device 32 and the 4th volume control device 42 also include throttle orifice, flow control valve, flowmeter and filtrator separately.
As shown in Figure 1, on the gas flow path between sampling channel 10,20,30,40 and the air pump 50, also be provided with a bypass of gas flow 60, in this bypass 60, be provided with a bypass flow variable valve 61, be used to regulate the gas flow that enters air pump 50 by bypass 60.In use, can be by uniting throttle orifice and the flow control valve of regulating on flow control valve 61 and each passage---throttle orifice 13 in the first flow control device 12 and the flow control valve gas flow of controlling each sampling channel for example, make it be operated in design discharge, for example 0.4l/min.
Claims (5)
1, a kind of hyperchannel PM
2.5Particle sampler, comprise sampling head, flow regulator and air pump, it is characterized in that, described sampling thief comprises the first, second, third and the 4th sampling channel, each sampling channel all has a sampling head and a flow regulator respectively, and described first, second, third all is connected with air pump with the 4th sampling channel; Wherein,
First sampling channel has first sampling head, and described first sampling head comprises the PM that order is provided with
2.5Cutter, denuder, teflon filter membrane and nylon leaching film;
Second sampling channel has second sampling head, and described second sampling head comprises the PM that order is provided with
2.5Cutter and teflon filter membrane;
The 3rd sampling channel has the 3rd sampling head, and described the 3rd sampling head comprises the PM that order is provided with
2.5Cutter and two-layer quartzy filter membrane;
The 4th sampling channel has the 4th sampling head, and described the 4th sampling head comprises the PM that order is provided with
2.5Cutter and polycarbonate leaching film.
2, hyperchannel PM according to claim 1
2.5Particle sampler is characterized in that, described flow regulator comprises throttle orifice, flow control valve, flowmeter and throttle orifice filtrator.
3, hyperchannel PM according to claim 1
2.5Particle sampler is characterized in that, comprises that also one is arranged on the bypass between sampling channel and the air pump and is arranged on flow control valve in the bypass.
4, hyperchannel PM according to claim 1
2.5Particle sampler is characterized in that, the PM in described first sampling head
2.5Cutter is the teflon material.
5, hyperchannel PM according to claim 1
2.5Particle sampler is characterized in that, the PM in described second sampling head, the 3rd sampling head and/or the 4th sampling head
2.5Cutter is an aluminium matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510001785 CN1808095A (en) | 2005-01-21 | 2005-01-21 | Multi-channel PM2.5 particle sampler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510001785 CN1808095A (en) | 2005-01-21 | 2005-01-21 | Multi-channel PM2.5 particle sampler |
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| Publication Number | Publication Date |
|---|---|
| CN1808095A true CN1808095A (en) | 2006-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510001785 Pending CN1808095A (en) | 2005-01-21 | 2005-01-21 | Multi-channel PM2.5 particle sampler |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886988A (en) * | 2010-06-24 | 2010-11-17 | 华东师范大学 | Tri-channel atmosphere particulate matter sampler |
| CN102062706A (en) * | 2010-12-22 | 2011-05-18 | 北京大学 | Passive sampling device for atmospheric particulates |
| CN102654435A (en) * | 2012-05-15 | 2012-09-05 | 青岛恒远检测技术有限公司 | Multifunctional high-load aerosol constant-current sampler |
| CN102967491A (en) * | 2012-11-08 | 2013-03-13 | 上海市环境监测中心 | Particle matter sampling device and method for particle matter detection using device |
| CN103018076A (en) * | 2012-12-10 | 2013-04-03 | 中国科学院合肥物质科学研究院 | PM (Particulate Matter) 2.5 particle size cutting device |
| CN103196707A (en) * | 2012-01-04 | 2013-07-10 | 武汉宇虹环保产业发展有限公司 | Double-channel bypass-type air particle cutter |
| CN103728198A (en) * | 2014-01-16 | 2014-04-16 | 深圳市华测检测技术股份有限公司 | Remote atmospheric particulate monitoring system |
| CN103760077A (en) * | 2014-01-16 | 2014-04-30 | 深圳市华测检测技术股份有限公司 | Atmospheric particulate monitoring system |
| CN103759988A (en) * | 2014-01-16 | 2014-04-30 | 深圳市华测检测技术股份有限公司 | Atmospheric particulate collection device |
| CN103776666A (en) * | 2014-02-17 | 2014-05-07 | 青岛众瑞智能仪器有限公司 | Six-channel air particle sampling device |
| CN104819873A (en) * | 2015-04-21 | 2015-08-05 | 上海新拓分析仪器科技有限公司 | Flow control device of medium-large flow gas and particles and application method thereof |
| CN105738261A (en) * | 2016-02-23 | 2016-07-06 | 中煤科工集团重庆研究院有限公司 | Filter paper translation device of beta-ray-method atmospheric particulate monitor |
| CN105738262A (en) * | 2016-02-23 | 2016-07-06 | 中煤科工集团重庆研究院有限公司 | Beta-ray-method three-channel atmospheric particulate monitor |
| CN106226132A (en) * | 2016-08-04 | 2016-12-14 | 环境保护部华南环境科学研究所 | Wide scope multisize particles thing parallel connection harvester |
| CN106289886A (en) * | 2016-07-26 | 2017-01-04 | 中国科学院大气物理研究所 | A kind of airborne fine particulate matter continuous automatic sampling device, system and method |
| CN107560986A (en) * | 2017-08-30 | 2018-01-09 | 合肥福瞳光电科技有限公司 | A kind of multichannel PM2.5 detection means |
| CN108318391A (en) * | 2018-02-09 | 2018-07-24 | 沈阳建筑大学 | It is a kind of the north low temperature environment in fine particle analysis method |
| CN108444772A (en) * | 2018-03-29 | 2018-08-24 | 中国环境科学研究院 | The miniature cutting head of atmospheric sampling |
| CN108613847A (en) * | 2016-12-10 | 2018-10-02 | 中国科学院大连化学物理研究所 | A kind of air sampler increasing acquisition flow |
| CN110031451A (en) * | 2019-03-29 | 2019-07-19 | 天津双允环保科技有限公司 | A kind of binary channels OCEC in-line analyzer |
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2005
- 2005-01-21 CN CN 200510001785 patent/CN1808095A/en active Pending
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886988B (en) * | 2010-06-24 | 2012-03-07 | 华东师范大学 | Tri-channel atmosphere particulate matter sampler |
| CN101886988A (en) * | 2010-06-24 | 2010-11-17 | 华东师范大学 | Tri-channel atmosphere particulate matter sampler |
| CN102062706A (en) * | 2010-12-22 | 2011-05-18 | 北京大学 | Passive sampling device for atmospheric particulates |
| CN102062706B (en) * | 2010-12-22 | 2012-07-04 | 北京大学 | Passive sampling device for atmospheric particulates |
| CN103196707A (en) * | 2012-01-04 | 2013-07-10 | 武汉宇虹环保产业发展有限公司 | Double-channel bypass-type air particle cutter |
| CN102654435A (en) * | 2012-05-15 | 2012-09-05 | 青岛恒远检测技术有限公司 | Multifunctional high-load aerosol constant-current sampler |
| CN102967491B (en) * | 2012-11-08 | 2015-07-29 | 上海市环境监测中心 | Particle sampling device and utilize this device to carry out the method for particle detection |
| CN102967491A (en) * | 2012-11-08 | 2013-03-13 | 上海市环境监测中心 | Particle matter sampling device and method for particle matter detection using device |
| CN103018076B (en) * | 2012-12-10 | 2015-07-08 | 中国科学院合肥物质科学研究院 | PM (Particulate Matter) 2.5 particle size cutting device |
| CN103018076A (en) * | 2012-12-10 | 2013-04-03 | 中国科学院合肥物质科学研究院 | PM (Particulate Matter) 2.5 particle size cutting device |
| CN103760077A (en) * | 2014-01-16 | 2014-04-30 | 深圳市华测检测技术股份有限公司 | Atmospheric particulate monitoring system |
| CN103759988A (en) * | 2014-01-16 | 2014-04-30 | 深圳市华测检测技术股份有限公司 | Atmospheric particulate collection device |
| CN103728198B (en) * | 2014-01-16 | 2016-08-17 | 华测检测认证集团股份有限公司 | Remotely atmosphere particle monitoring system |
| CN103728198A (en) * | 2014-01-16 | 2014-04-16 | 深圳市华测检测技术股份有限公司 | Remote atmospheric particulate monitoring system |
| CN103759988B (en) * | 2014-01-16 | 2016-05-18 | 华测检测认证集团股份有限公司 | Atmospheric particulates collecting device |
| CN103760077B (en) * | 2014-01-16 | 2016-05-25 | 华测检测认证集团股份有限公司 | Atmosphere particle monitoring system |
| CN103776666A (en) * | 2014-02-17 | 2014-05-07 | 青岛众瑞智能仪器有限公司 | Six-channel air particle sampling device |
| CN104819873A (en) * | 2015-04-21 | 2015-08-05 | 上海新拓分析仪器科技有限公司 | Flow control device of medium-large flow gas and particles and application method thereof |
| CN105738262B (en) * | 2016-02-23 | 2018-09-28 | 中煤科工集团重庆研究院有限公司 | β ray method tri-channel atmosphere particulate matter monitors |
| CN105738261A (en) * | 2016-02-23 | 2016-07-06 | 中煤科工集团重庆研究院有限公司 | Filter paper translation device of beta-ray-method atmospheric particulate monitor |
| CN105738261B (en) * | 2016-02-23 | 2018-12-11 | 中煤科工集团重庆研究院有限公司 | The filter paper translating device of β ray method atmosphere particulate matter monitoring instrument |
| CN105738262A (en) * | 2016-02-23 | 2016-07-06 | 中煤科工集团重庆研究院有限公司 | Beta-ray-method three-channel atmospheric particulate monitor |
| CN106289886B (en) * | 2016-07-26 | 2019-07-02 | 中国科学院大气物理研究所 | A kind of airborne fine particulate matter continuous automatic sampling device, system and method |
| CN106289886A (en) * | 2016-07-26 | 2017-01-04 | 中国科学院大气物理研究所 | A kind of airborne fine particulate matter continuous automatic sampling device, system and method |
| CN106226132B (en) * | 2016-08-04 | 2018-11-30 | 环境保护部华南环境科学研究所 | Wide scope multisize particles object parallel connection acquisition device |
| CN106226132A (en) * | 2016-08-04 | 2016-12-14 | 环境保护部华南环境科学研究所 | Wide scope multisize particles thing parallel connection harvester |
| CN108613847A (en) * | 2016-12-10 | 2018-10-02 | 中国科学院大连化学物理研究所 | A kind of air sampler increasing acquisition flow |
| CN107560986A (en) * | 2017-08-30 | 2018-01-09 | 合肥福瞳光电科技有限公司 | A kind of multichannel PM2.5 detection means |
| CN108318391A (en) * | 2018-02-09 | 2018-07-24 | 沈阳建筑大学 | It is a kind of the north low temperature environment in fine particle analysis method |
| CN108444772A (en) * | 2018-03-29 | 2018-08-24 | 中国环境科学研究院 | The miniature cutting head of atmospheric sampling |
| CN110031451A (en) * | 2019-03-29 | 2019-07-19 | 天津双允环保科技有限公司 | A kind of binary channels OCEC in-line analyzer |
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