CN102384895A - Field atmosphere detection system and detection method thereof - Google Patents
Field atmosphere detection system and detection method thereof Download PDFInfo
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- CN102384895A CN102384895A CN2011103606132A CN201110360613A CN102384895A CN 102384895 A CN102384895 A CN 102384895A CN 2011103606132 A CN2011103606132 A CN 2011103606132A CN 201110360613 A CN201110360613 A CN 201110360613A CN 102384895 A CN102384895 A CN 102384895A
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Abstract
The invention discloses a field atmosphere detection system and a detection method thereof. The field detection system comprises a passive atmosphere sampler and a portable spectrophotometer which are separately arranged, wherein the passive atmosphere sampler comprises a cylindrical sampler body, two round diaphragms, two round filter screens and two ventilated round protecting covers; the sampler body is hollow and has a cavity for containing absorption liquid; two side surfaces of the sampler body are respectively provided with at least one air vent; the peripheral side surface of the sampler body is provided with at least one absorption liquid inlet and outlet hole; the air vent and the absorption liquid inlet and outlet hole are both communicated with the cavity; two sides of the sampler body are successively provided with the round diaphragms, the round filter screens and the round protecting covers; and the round protecting covers are installed on the sampler body. The field atmosphere detection system provided by the invention has the advantages of small volume, light weight and low cost, is convenient to carry, is suitable for field detection, and can quickly detect formaldehyde and/ or nitrogen dioxide in the atmosphere within 10 minutes.
Description
Technical field
The present invention relates to atmosphere pick-up unit field, particularly a kind of atmosphere detection system and detection method thereof that is suitable for on-the-spot use.
Background technology
Formaldehyde and nitrogen dioxide are two kinds of very common in atmosphere pollutants, if detect certain place or certain regional air quality, the content of formaldehyde and nitrogen dioxide in the common accurately mensuration atmosphere.In the prior art; The detection system that is used for measuring atmosphere formaldehyde and nitrogen dioxide mainly comprises atmospheric sampling device and pollutant analysis determinator two parts; Wherein the atmospheric sampling device adopts active air sampler mostly, and the pollutant analysis determinator adopts spectrophotometer mostly.When the active air sampler of atmosphere process; Formaldehyde that contains in the atmosphere and nitrogen dioxide are placed on the inner absorption liquid of active air sampler and absorb; Then absorption liquid is taken out and with the spectrophotometer analysis formaldehyde wherein and the content of nitrogen dioxide, finally draw the accurate content of formaldehyde and nitrogen dioxide in the atmosphere.Active air sampler has advantages such as sampling efficiency height, selection mode be flexible, and still, active air sampler comprises equipment such as sampling pump and rectifier, complex structure, and instrument is heavy, and inconvenience is carried; Spectrophotometer is accomplished in the laboratory the analysis of formaldehyde in the atmosphere and nitrogen dioxide usually.Therefore, above-mentioned atmosphere detection system is inappropriate for on-the-spot use of detection in the open air, can't satisfy that formaldehyde and nitrogen dioxide carry out the requirement of fast measuring in the on-the-spot atmosphere to detecting.
In order to measure the content of formaldehyde and nitrogen dioxide in the atmosphere quickly and accurately, be starved of at present and a kind ofly can detecting the on-the-spot atmosphere detection system of using.
Summary of the invention
The purpose of this invention is to provide a kind of on-the-spot atmosphere detection system of using that is suitable for.
Another object of the present invention provides a kind of said detection method that is suitable for the on-the-spot atmosphere detection system of using.
The atmosphere detection system that is suitable for on-the-spot use provided by the invention comprises passive atmospheric sampling thief and the portable spectrophotometer that splits; Said passive atmospheric sampling thief comprises cylindrical sampling thief main body, two circular diaphragm, two circular filter screens and two the circular protecting covers that can breathe freely; The inner hollow of said sampling thief main body also constitutes a cavity that is used to hold absorption liquid; Respectively there is at least one bleeder vent two sides of said sampling thief main body; The peripheral sides of said sampling thief main body has at least one absorption liquid manhole appendix; Said bleeder vent and said absorption liquid manhole appendix all are communicated with said cavity, and the both sides of said sampling thief main body respectively set gradually circular diaphragm, circular filter screen and circular protecting cover, and said circular protecting cover is installed on the sampling thief main body.
Preferably, said detection system further comprise have semicircle opening and can with the matching used base of said passive atmospheric sampling thief.
Preferably, said barrier film adopts the teflon material.
Preferably, the filter screen of said filter screen for processing with stainless steel wire.
Preferably, the volume of said cavity is more than or equal to 5ml.
Preferably, the characteristic wavelength of said portable spectrophotometer is 550nm and 630nm.
Preferably, said portable spectrophotometer has rechargable power supplies.
The said detection method that is suitable for the on-the-spot atmosphere detection system of using provided by the invention comprises the steps:
(1) the said absorption liquid manhole appendix of absorption liquid through said passive atmospheric sampling thief injected in the said cavity;
(2) the said passive atmospheric sampling thief with the injection absorption liquid of step (1) places on-the-spot atmosphere sampling 5-10 minute, and atmosphere gets into the absorption liquid in the said cavity through diffusion, and absorption liquid absorbs formaldehyde and/or the nitrogen dioxide in the atmosphere;
(3) absorption liquid of formaldehyde in the absorption atmosphere of step (2) and/or nitrogen dioxide is extracted out in said cavity through said absorption liquid manhole appendix;
(4) with the content of formaldehyde and/or nitrogen dioxide the absorption liquid of in said cavity, extracting out of said portable spectrophotometer determination step (3).
Preferably, the concentration of formaldehyde and nitrogen dioxide is respectively 0.01-2.00mg/m in the atmosphere that can measure of said detection system
3And 0.05-3.00mg/m
3
Preferably, the formaldehyde in the said detection system mensuration atmosphere and/or the time of nitrogen dioxide are 5-10 minute.
The present invention has following beneficial effect:
Atmosphere detection system volume provided by the invention is little, in light weight, easy to carry; Cheap, and have rechargable power supplies, be very suitable for on-the-spot use of detection in the open air; And can measure formaldehyde and/or the nitrogen dioxide in the atmosphere apace, minute is no more than 10 minutes.
Description of drawings
The synoptic diagram of the passive atmospheric sampling thief that is suitable for the on-the-spot atmosphere detection system of using that Fig. 1 provides for the embodiment of the invention;
The sectional view of the sampling thief main body of the passive atmospheric sampling thief that Fig. 2 provides for the embodiment of the invention;
Fig. 3 that provide for the embodiment of the invention with the synoptic diagram matching used base of passive atmospheric sampling thief.
Embodiment
Below in conjunction with accompanying drawing and embodiment summary of the invention of the present invention is done further to describe.
The atmosphere detection system that is suitable for on-the-spot use provided by the invention comprises passive atmospheric sampling thief and the portable spectrophotometer that splits.Said passive atmospheric sampling thief comprises cylindrical sampling thief main body 1, two circular diaphragm 2, two circular filter screens 3 and two the circular protecting covers 4 that can breathe freely, and is as shown in Figure 1.The inner hollow of said sampling thief main body 1 also constitutes a cavity 5 that is used to hold absorption liquid; As shown in Figure 2; Respectively there are two bleeder vents 6 two sides of said sampling thief main body 1; The peripheral sides of said sampling thief main body 1 has two absorption liquid manhole appendixs 7, and said bleeder vent 6 all is communicated with said cavity 5 with said absorption liquid manhole appendix 7.The both sides of said sampling thief main body 1 respectively set gradually circular diaphragm 2, circular filter screen 3 and circular protecting cover 4, and said circular protecting cover 4 is installed on the sampling thief main body 1.Said filter screen 3 is used for filtering the bigger solid dust of atmosphere particle; Said barrier film 2 is used for filtering the less solid dust of atmosphere particle, and said barrier film 2 also is used to seal said bleeder vent 6 makes atmosphere can not flow out from said bleeder vent 6 through absorption liquid and the absorption liquids in the said cavity 5 that said bleeder vent 6 gets in the said cavity 5 through said barrier film 2.Said detection system further comprise have semicircle opening and can with the matching used base 8 of said passive atmospheric sampling thief, as shown in Figure 3, be used for placing and fixing said passive atmospheric sampling thief.Said barrier film 2 can see through atmosphere and can not see through the barrier film of absorption liquid for what process with for example teflon.The filter screen of said filter screen 3 for processing with for example stainless steel wire.The volume of said cavity 5 is more than or equal to 5ml.The characteristic wavelength of said portable spectrophotometer is 550nm and 630nm.
The said detection method that is suitable for the on-the-spot atmosphere detection system of using provided by the invention comprises the steps:
(1) the said absorption liquid manhole appendix 7 of absorption liquid through said passive atmospheric sampling thief injected in the said cavity 5;
(2) the said passive atmospheric sampling thief with the injection absorption liquid of step (1) places on-the-spot atmosphere sampling 5-10 minute, and atmosphere gets into the absorption liquid in the said cavity 5 through diffusion, and absorption liquid absorbs formaldehyde and/or the nitrogen dioxide in the atmosphere;
(3) absorption liquid of formaldehyde in the absorption atmosphere of step (2) and/or nitrogen dioxide is extracted out in said cavity 5 through said absorption liquid manhole appendix 7;
(4) with the formaldehyde from the said cavity 5 interior absorption liquids of extracting out of said portable spectrophotometer determination step (3) and/or the content of nitrogen dioxide.
Said detection system is used for measuring the content of atmosphere formaldehyde and/or nitrogen dioxide.The concentration of formaldehyde and nitrogen dioxide is respectively 0.01-2.00mg/m in the atmosphere that said detection system can be measured
3And 0.05-3.00mg/m
3The formaldehyde in the said detection system mensuration atmosphere and/or the time of nitrogen dioxide are 5-10 minute.
Should be appreciated that the above detailed description of technical scheme of the present invention being carried out by preferred embodiment is schematic and nonrestrictive.Those of ordinary skill in the art is reading on the basis of instructions of the present invention and can make amendment to the technical scheme that each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (10)
1. be suitable for the on-the-spot atmosphere detection system of using; This detection system comprises passive atmospheric sampling thief and the portable spectrophotometer that splits; It is characterized in that; Said passive atmospheric sampling thief comprises cylindrical sampling thief main body (1), two circular diaphragm (2), two circular filter screens (3) and two the circular protecting covers (4) that can breathe freely; The inner hollow of said sampling thief main body (1) also constitutes a cavity (5) that is used to hold absorption liquid; Respectively there is at least one bleeder vent (6) two sides of said sampling thief main body (1), and the peripheral sides of said sampling thief main body (1) has at least one absorption liquid manhole appendix (7), and said bleeder vent (6) and said absorption liquid manhole appendix (7) all are communicated with said cavity (5); The both sides of said sampling thief main body (1) respectively set gradually circular diaphragm (2), circular filter screen (3) and circular protecting cover (4), and said circular protecting cover (4) is installed on the sampling thief main body (1).
2. according to claim 1ly be suitable for the on-the-spot atmosphere detection system of using, it is characterized in that, said detection system further comprise have semicircle opening and can with the matching used base of said passive atmospheric sampling thief (8).
3. the atmosphere detection system that is suitable for on-the-spot use according to claim 1 is characterized in that said barrier film (2) adopts the teflon material.
4. the atmosphere detection system that is suitable for on-the-spot use according to claim 1 is characterized in that, the filter screen of said filter screen (3) for processing with stainless steel wire.
5. the atmosphere detection system that is suitable for on-the-spot use according to claim 1 is characterized in that the volume of said cavity (5) is more than or equal to 5ml.
6. the atmosphere detection system that is suitable for on-the-spot use according to claim 1 is characterized in that the characteristic wavelength of said portable spectrophotometer is 550nm and 630nm.
7. the atmosphere detection system that is suitable for on-the-spot use according to claim 1 is characterized in that said portable spectrophotometer has rechargable power supplies.
8. the detection method that is suitable for the on-the-spot atmosphere detection system of using as claimed in claim 1 is characterized in that, comprises the steps:
(1) the said absorption liquid manhole appendix (7) of absorption liquid through said passive atmospheric sampling thief injected in the said cavity (5);
(2) the said passive atmospheric sampling thief with the injection absorption liquid of step (1) places on-the-spot atmosphere sampling 5-10 minute, and atmosphere gets into the absorption liquid in the said cavity (5) through diffusion, and absorption liquid absorbs formaldehyde and/or the nitrogen dioxide in the atmosphere;
(3) absorption liquid of formaldehyde in the absorption atmosphere of step (2) and/or nitrogen dioxide is extracted out in said cavity (5) through said absorption liquid manhole appendix (7);
(4) with the formaldehyde from the interior absorption liquid of extracting out of said cavity (5) of said portable spectrophotometer determination step (3) and/or the content of nitrogen dioxide.
9. the detection method that is suitable for the on-the-spot atmosphere detection system of using according to claim 8 is characterized in that the concentration of formaldehyde and nitrogen dioxide is respectively 0.01-2.00mg/m in the atmosphere that said detection system can be measured
3And 0.05-3.00mg/m
3
10. the detection method that is suitable for the on-the-spot atmosphere detection system of using according to claim 8 is characterized in that, the formaldehyde in the said detection system mensuration atmosphere and/or the time of nitrogen dioxide are 5-10 minute.
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| CN2011103606132A CN102384895A (en) | 2011-11-15 | 2011-11-15 | Field atmosphere detection system and detection method thereof |
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| CN2011103606132A CN102384895A (en) | 2011-11-15 | 2011-11-15 | Field atmosphere detection system and detection method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115791A (en) * | 2015-09-16 | 2015-12-02 | 深圳市建筑科学研究院股份有限公司 | Passive type contaminant flux sampling device |
| CN106353426A (en) * | 2016-08-31 | 2017-01-25 | 科邦检测集团有限公司 | Badge type passive air sampler based on MCM-41 molecular sieve |
| CN106769235A (en) * | 2016-11-23 | 2017-05-31 | 厦门大学 | A kind of environmental contaminants time series concentration passive type sampling apparatus |
| US20210132024A1 (en) * | 2019-10-31 | 2021-05-06 | Arcadis U.S., Inc. | Passive sampler |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115791A (en) * | 2015-09-16 | 2015-12-02 | 深圳市建筑科学研究院股份有限公司 | Passive type contaminant flux sampling device |
| CN106353426A (en) * | 2016-08-31 | 2017-01-25 | 科邦检测集团有限公司 | Badge type passive air sampler based on MCM-41 molecular sieve |
| CN106769235A (en) * | 2016-11-23 | 2017-05-31 | 厦门大学 | A kind of environmental contaminants time series concentration passive type sampling apparatus |
| CN106769235B (en) * | 2016-11-23 | 2019-07-30 | 厦门大学 | A kind of environmental contaminants time series concentration passive type sampling apparatus |
| US20210132024A1 (en) * | 2019-10-31 | 2021-05-06 | Arcadis U.S., Inc. | Passive sampler |
| US20210131922A1 (en) * | 2019-10-31 | 2021-05-06 | Arcadis U.S., Inc. | Passive sampler |
| US11650138B2 (en) * | 2019-10-31 | 2023-05-16 | Arcadis U.S., Inc. | Passive sampler |
| US11703426B2 (en) * | 2019-10-31 | 2023-07-18 | Arcadis U.S., Inc. | Passive sampler |
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Application publication date: 20120321 |