CN108051343A - A kind of system and method for monitoring Atmospheric particulates reactive oxygen species on-line - Google Patents
A kind of system and method for monitoring Atmospheric particulates reactive oxygen species on-line Download PDFInfo
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- CN108051343A CN108051343A CN201810106504.XA CN201810106504A CN108051343A CN 108051343 A CN108051343 A CN 108051343A CN 201810106504 A CN201810106504 A CN 201810106504A CN 108051343 A CN108051343 A CN 108051343A
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- condensation
- atmospheric particulates
- chamber
- oxygen species
- wet cyclone
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- 239000003642 reactive oxygen metabolite Substances 0.000 title claims abstract description 35
- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005494 condensation Effects 0.000 claims abstract description 33
- 238000009833 condensation Methods 0.000 claims abstract description 33
- 238000005070 sampling Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 abstract description 5
- 239000013618 particulate matter Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 150000003254 radicals Chemical group 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- -1 oxygen radical Chemical class 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 4
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- OUUQCZGPVNCOIJ-UHFFFAOYSA-N hydroperoxyl Chemical compound O[O] OUUQCZGPVNCOIJ-UHFFFAOYSA-N 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- XDFNWJDGWJVGGN-UHFFFAOYSA-N 2-(2,7-dichloro-3,6-dihydroxy-9h-xanthen-9-yl)benzoic acid Chemical compound OC(=O)C1=CC=CC=C1C1C2=CC(Cl)=C(O)C=C2OC2=CC(O)=C(Cl)C=C21 XDFNWJDGWJVGGN-UHFFFAOYSA-N 0.000 description 1
- 239000000926 atmospheric chemistry Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 230000030833 cell death Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000028993 immune response Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008557 oxygen metabolism Effects 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000009774 resonance method Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
A kind of system and method for monitoring Atmospheric particulates reactive oxygen species on-line disclosed by the invention, which includes sampling device, condensation increases chamber, pure water feedway, electrostatic pump, wet cyclone, PFN solution supplying devices and fluorescence detector；The sampling device, condensation increase chamber, wet cyclone and fluorescence detector and are sequentially connected, and the pure water feedway increases chamber with the condensation by electrostatic pump and is connected, and the PFN solution supplying devices are connected by electrostatic pump with wet cyclone.The present invention realizes concentration that is real-time, comprehensive, accurately measuring reactive oxygen species in Atmospheric particulates, and scientific basis is provided for accurate evaluation air quality.
Description
Technical field
The invention belongs to Atmospheric Chemistry and air environmental pollution analytical equipment field, more particularly to a kind of on-line monitoring air
The system and method for particulate matter reactive oxygen species.
Background technology
Reactive oxygen species refer to oxygen radical related with oxygen metabolism in organism and the existing tool of non-free radical form
There is the intermediate product of high activity, mainly born including free radicals, peroxides such as hydroxyl radical free radical, NO free radical, perhydroxyl radical free radicals
Ion, hypochlorite plasma and hydrogen peroxide, organic peroxide equimolecular.Reactive oxygen species in atmospheric environment, with
The form of gaseous state and particulate form simultaneously deposits simultaneously generally existing.Its gaseous active oxygen species, due to highly dissoluble and the expansion of strong molecule
Dissipate ability, into human body after largely adsorbed by respiratory tract, it is smaller to the harm of health；Its particulate form active oxygen object
Matter can enter human lung using particulate matter as transport vehicle, larger to the harm of health.Human body spontaneous generates appropriate
Reactive oxygen species play an important role in the vital movements such as gene expression and immune response, required for human body；Excess activity oxygen
Substance then easy initiated oxidation stress, cause cell damage or death, seriously affect health.To sum up, air active oxygen
Substance has accurate evaluation air quality important reference significance, therefore to air reactive oxygen species, especially Atmospheric particulates
In active oxygen carry out effectively detection be very necessary.
The detection of reactive oxygen species in Atmospheric particulates at present is mainly using offline mode, including chemoluminescence method, electricity
Sub- paramagnetic resonance method and spectrophotometry etc..Since Atmospheric particulates reactive oxygen species have the characteristics that short life and activity are high,
Therefore the offline mode that analysis time relatively lags behind possibly can not accurately obtain its actual concentration.Fluorescence probe method is because with fast
The advantages that fast, accurate, sensitive, is widely used in the on-line monitoring of reactive oxygen species.Wherein, 2,7- dichlorofluoresceins（2,7-
Dichlorofluorescin, abbreviation DCGH）Sonde method is current more common on-line monitoring technique, but there are versatilities
The shortcomings that poor, therefore a kind of effective and general on-line monitoring technique is very necessary.
The content of the invention
It is an object of the invention to provide a kind of system and methods for monitoring Atmospheric particulates reactive oxygen species on-line, realize
In real time, comprehensively, accurately measure the concentration of reactive oxygen species in Atmospheric particulates, be the oxidisability of accurate evaluation Atmospheric particulates
Or even air quality provides scientific basis.
To achieve these goals, technical scheme is as follows：
A kind of system for monitoring Atmospheric particulates reactive oxygen species on-line increases chamber, pure water supply dress including sampling device, condensation
It puts, electrostatic pump, wet cyclone, PFN solution（Promote fluorescence nitroxide（Profluorescent nitroxide, referred to as
PFN）Feedway and fluorescence detector；The sampling device, condensation increase chamber, wet cyclone and fluoroscopic examination
Device is sequentially connected, and the pure water feedway increases chamber with the condensation by electrostatic pump and is connected, the PFN solution supplying devices
It is connected by electrostatic pump with wet cyclone.
A bypass in parallel with condensation growth chamber is also accessed between the sampling device and wet cyclone, it should
Bypass both ends are equipped with valve.
A kind of method for monitoring Atmospheric particulates reactive oxygen species on-line, comprises the following steps：
S1. the Atmospheric particulates of certain grain size and gas are sent into condensation by sampling device simultaneously and increase chamber, electrostatic pump is from pure
Small flow pure water is constantly pumped in water feeder to condensing in growth chamber, condensation is made to increase chamber and is in hypersaturated state, is allowed
Atmospheric particulates moisture absorption in condensation increases chamber increases；
S2. the Atmospheric particulates increased in condensation in chamber after moisture absorption growth enter wet cyclone, meanwhile, electrostatic pump will
PFN solution in PFN solution supplying devices imports wet cyclone, and wet cyclone makes PFN solution form standing vortex,
Into the reactive oxygen species and PFN solution reactions in the moisture absorption growth Atmospheric particulates of wet cyclone；
S3. reaction product enters fluorescence detector after the completion of reacting, and is detected by fluorescence detector.
The Atmospheric particulates of certain grain size are obtained by whirlwind cutter from air air-flow.
After using the above program, the present invention has the beneficial effect that：The present invention combines condensation and increases chamber and wet cyclone,
Complete the trapping of reactive oxygen species in Atmospheric particulates；It is realized using highly sensitive, high universalizable PFN probes as detector big
In aerated particle object reactive oxygen species in real time, comprehensively and accurately monitor on-line, be accurate evaluation Atmospheric particulates oxidisability or even
Air quality provides scientific basis.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Description of the drawings
Fig. 1 is the system structure schematic diagram of the present invention.
Label declaration
Sampling device 1, condensation increase chamber 2, pure water feedway 3, electrostatic pump 4, wet cyclone 5, PFN solution supply dress
Put 6, fluorescence detector 7, bypass 8, valve 81, vacuum extractor 9.
Specific embodiment
As shown in Figure 1, the present embodiment disclose a kind of on-line monitoring Atmospheric particulates reactive oxygen species system, including into
Sampling device 1, condensation increase chamber 2, pure water feedway 3, electrostatic pump 4, wet cyclone 5, PFN solution supplying devices 6 with
And fluorescence detector 7；The sampling device 1, condensation increase chamber 2, wet cyclone 5 and fluorescence detector 7 and connect successively
It connects, the pure water feedway 3 increases chamber 2 with the condensation by electrostatic pump 4 and is connected, and the PFN solution supplying devices 6 pass through
Electrostatic pump 4 is connected with wet cyclone 5, and electrostatic pump 4 is multi-channel pump, therefore wet cyclone 5 is also provided with and passes through
Electrostatic pump 4 is connected with fluorescence detector 7.Wet cyclone 5 is also vacuumized by vacuum extractor 9.
A bypass 8 in parallel with condensation growth chamber 2 is also accessed between sampling device 1 and wet cyclone 5, it should
It bypasses 8 both ends and is equipped with valve 81.
Fig. 1 is referred to, a kind of method for monitoring Atmospheric particulates reactive oxygen species on-line comprises the following steps：
S1. the Atmospheric particulates of certain grain size and gas are sent into condensation by sampling device 1 simultaneously and increase chamber 2, electrostatic pump 4
Small flow pure water to condensation is constantly pumped from pure water feedway 3 to increase in chamber 2, and condensation is made to increase chamber 2 and is in supersaturation
State allows Atmospheric particulates condensation to increase moisture absorption in chamber 2 and increases；
S2. the Atmospheric particulates increased in condensation in chamber 2 after moisture absorption growth enter wet cyclone 5, meanwhile, electrostatic pump 4
PFN solution in PFN solution supplying devices 6 is imported into wet cyclone 5, wet cyclone 5 forms PFN solution
Standing vortex, into the reactive oxygen species and PFN solution reactions in the Atmospheric particulates after the moisture absorption growth of wet cyclone 5；
S3. reaction product enters fluorescence detector 7 after the completion of reacting, and is detected by fluorescence detector 7.
The Atmospheric particulates of above-mentioned certain grain size are obtained by whirlwind cutter from air air-flow.
Atmospheric particulates oxidisability detection process has the characteristics that：
1）Condensation increases the effect of chamber 2：Certain particles things because supersaturated vapor is condensate in surface particles, make particulate matter
Grain size increases, and contributes to the trapping of certain particles things.
2）The effect of wet cyclone 5：Gas and particulate matter are simultaneously stored in atmospheric environment.By whirlwind cutter
Afterwards, into sampling device 1 be gas and certain grain size particulate matter, the effect of wet cyclone 5 be realize gas and
The ON-LINE SEPARATION of certain particles things.
3) effect of PFN solution：Reactive oxygen species in air do not have fluorescent absorption in itself, it is impossible to directly be examined by fluorescence
Device 7 is surveyed to be detected.But reactive oxygen species can quickly react with PFN solution, reaction product of the generation with fluorescent absorption,
By response signal of the reaction product on fluorescence detector 7, the concentration of reactive oxygen species can be obtained indirectly.And select PFN molten
Liquid is reacted with reactive oxygen species, in addition to it can generate with the substance of fluorescent absorption, also as glimmering with having for PFN solution reactions
The product of light absorption has the characteristics that high sensitivity, and PFN solution can generally be reacted with the reactive oxygen species in particulate matter（Air
Reactive oxygen species in particulate matter, as described in " technical background ", there are many, including hydroxyl radical free radical, NO free radical, perhydroxyl radical
The free radicals such as free radical cross negative oxygen ion, hypochlorite plasma and hydrogen peroxide, organic peroxide equimolecular）.
4) particle size to be measured determines by whirlwind cutter, particle size after increasing chamber into condensation
Increase, though grain size changes, it is acted on primarily to effective trapping of particulate matter, and system is surveyed by fluorescence detector
Reactive oxygen species in the particulate matter of amount should still depend on the grain size that whirlwind cutter obtains.
The rush fluorescence nitroxide that the present invention uses（Profluorescent nitroxide, PFN）Technology has sensitivity
The characteristics of high and versatile, increases chamber 2 and wet cyclone 5 with reference to condensation, provides a kind of on-line monitoring air
The effective ways of reactive oxygen species in grain object.The present invention provides for the oxidisability or even air quality of accurate evaluation Atmospheric particulates
Scientific basis.
The equivalent variations that all mentalities of designing according to this case are done each fall within the protection domain of this case.
Claims (4)
1. a kind of system for monitoring Atmospheric particulates reactive oxygen species on-line, it is characterised in that：Increase including sampling device, condensation
Chamber, pure water feedway, electrostatic pump, wet cyclone, PFN solution supplying devices and fluorescence detector；The sample introduction
Device, condensation increase chamber, wet cyclone and fluorescence detector and are sequentially connected, and the pure water feedway passes through electrostatic
Pump increases chamber with the condensation and is connected, and the PFN solution supplying devices are connected by electrostatic pump with wet cyclone.
2. a kind of system for monitoring Atmospheric particulates reactive oxygen species on-line as described in claim 1, it is characterised in that：Institute
It states and a bypass in parallel with condensation growth chamber is also accessed between sampling device and wet cyclone, which is all provided with
There is valve.
A kind of 3. method for monitoring Atmospheric particulates reactive oxygen species on-line, which is characterized in that comprise the following steps：
S1. the Atmospheric particulates of certain grain size and gas are sent into condensation by sampling device simultaneously and increase chamber, electrostatic pump is from pure
Small flow pure water is constantly pumped in water feeder to condensing in growth chamber, condensation is made to increase chamber and is in hypersaturated state, is allowed
Atmospheric particulates moisture absorption in condensation increases chamber increases；
S2. the Atmospheric particulates increased in condensation in chamber after moisture absorption growth enter wet cyclone, meanwhile, electrostatic pump will
PFN solution in PFN solution supplying devices imports wet cyclone, and wet cyclone makes PFN solution form standing vortex,
Into the reactive oxygen species and PFN solution reactions in the moisture absorption growth Atmospheric particulates of wet cyclone；
S3. reaction product enters fluorescence detector after the completion of reacting, and is detected by fluorescence detector.
4. a kind of method for monitoring Atmospheric particulates reactive oxygen species on-line as claimed in claim 3, it is characterised in that：It is described
The Atmospheric particulates of certain grain size are obtained by whirlwind cutter from air air-flow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106504.XA CN108051343A (en) | 2018-02-02 | 2018-02-02 | A kind of system and method for monitoring Atmospheric particulates reactive oxygen species on-line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810106504.XA CN108051343A (en) | 2018-02-02 | 2018-02-02 | A kind of system and method for monitoring Atmospheric particulates reactive oxygen species on-line |
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| CN108051343A true CN108051343A (en) | 2018-05-18 |
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| CN201810106504.XA Pending CN108051343A (en) | 2018-02-02 | 2018-02-02 | A kind of system and method for monitoring Atmospheric particulates reactive oxygen species on-line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346341A (en) * | 2019-08-08 | 2019-10-18 | 生态环境部华南环境科学研究所 | A kind of active o content automatic checkout system |
| CN110441203A (en) * | 2019-09-11 | 2019-11-12 | 生态环境部华南环境科学研究所 | One kind is for active oxygen on-line monitoring acquisition equipment and monitoring device |
| CN110554010A (en) * | 2019-08-16 | 2019-12-10 | 南京信大气象科学技术研究院有限公司 | System for active oxygen free radical in high-efficient automatically cleaning on-line measurement atmospheric particulates |
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| CN110346341A (en) * | 2019-08-08 | 2019-10-18 | 生态环境部华南环境科学研究所 | A kind of active o content automatic checkout system |
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Application publication date: 20180518 |