CN110501265A - Wet removing coefficient measurement method and system under a kind of Atmospheric particulates cloud - Google Patents
Wet removing coefficient measurement method and system under a kind of Atmospheric particulates cloud Download PDFInfo
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Abstract
The invention discloses wet removing coefficient measurement method and systems under a kind of Atmospheric particulates cloud, include the following steps, carry out block sampling to rainwater, obtain rainwater sample；Rainwater sample is pre-processed, the insoluble component in rainwater sample is filtered, filtered rainwater sample is stored refrigerated；Detect black wood charcoal quality in aerosol components and the single aerosol particle in filtered rainwater sample；Acquisition and the atmospheric sample of each rainwater sample contemporaneity, and detect aerosol components in collected atmospheric sample, black wood charcoal quality in Particle density and single aerosol particle；The rainfall intensity and the average height of cloud base with rainwater sample contemporaneity are obtained, and combines the data in the contemporaneity rainwater sample and atmospheric sample detected, calculates wet removing coefficient.Advantage is: the present invention realizes the synchro measure of aerosol load in precipitation and atmosphere, obtains the direct measurement for the wet removing coefficient of particulate matter under cloud, realizes the innovation of the wet removing coefficient measurement of single game precipitation different periods.
Description
Technical field
The present invention relates to wet removing coefficient measurement sides under technical field of environmental science more particularly to a kind of Atmospheric particulates cloud
Method and system.
Background technique
As China's rapid development of economy, urbanization process quickening and vehicle guaranteeding organic quantity dramatically increase, great Liang Gong
The discharge of SO2 and NOx is that current China's regionality airborne fine particulate matter (PM2.5) is caused to pollute the most fundamental original during industry
Cause.A large number of studies show that atmosphere pollution enhancing caused by the mankind discharge increasingly influences the production and life of the mankind, not only shadow
It rings the ecosystem of Global land and ocean, change soil and water chemistry circulation, while also increasing Human Health Risk, reduce life
Object diversity.The wet deposition of Atmospheric particulates is one of the important channel that aerosol is removed from atmosphere.Comprehensive multiple whole world
From the point of view of Chemical transport model result, the sulphur and nitrogen (important inorganic aerosol component in particulate matter) in most of China area are all
Based on wet deposition.Wherein, the wet removing coefficient of aerosol is the key parameter of its wet_end addition of numerical model accurate simulation.
In the theoretical calculation of wet removing coefficient, evaluation method is only applicable to (transport less than 100 nanometer particle size sections with Blang
It is dynamic leading) small particles and the partial size section (being intercepted and collided based on scavenging effect with direction) greater than 20 μm bulky grain, it is right
In the wet removing coefficients of PM2.5 aerosol particle object of 2.5 μm of partial size sections, there are also (there is " Greenfield gap ") to be studied.
In modular estimate, mode is derived from the estimation of wet removing coefficient on the basis of existing theoretical research mostly at present, is reduced to
Touch the relationship of simultaneously coefficient and precipitation intensity.Therefore mode, which has the estimation of wet removing coefficient, significantly underestimates, this also exists
Underestimating for wet deposition amount is resulted in a certain extent.And in field observation, it is set currently on the market without mature available detection
It is standby.Previous research estimates its wet removing by aerosol components concentration and precipitation concentration of component in conjunction with monthly average scale
Coefficient.But the evaluation method cannot achieve high time precision resolution ratio, can not also be directed to single game precipitation example.
Precipitation sample analysis is often made of outfield acquisition and lab analysis two parts.The rainwater sample of outfield acquisition
It is stored by artificial pre-processing and in the environment of zero degree or so, therefore outfield collects lab analysis there are a times
Difference, and the variation of rainwater acidity is so that its chemical constituent changes within this time difference, and how to realize that rainwater sample is automatic
Isolation technics, carrying out separation and culture at the first time after sampling is the key that aerosol load in accurate measurement rainwater.
Summary of the invention
The purpose of the present invention is to provide wet removing coefficient measurement method and systems under a kind of Atmospheric particulates cloud, to solve
Foregoing problems certainly existing in the prior art.
To achieve the goals above, The technical solution adopted by the invention is as follows:
Wet removing coefficient measurement method under a kind of Atmospheric particulates cloud, includes the following steps,
S1, block sampling is carried out to rainwater, obtains rainwater sample；
S2, rainwater sample is pre-processed, the insoluble component in rainwater sample is filtered, by filtered rainwater sample
It is stored refrigerated；
Black wood charcoal quality in S3, the aerosol components in the filtered rainwater sample of detection and single aerosol particle；
S4, acquisition and the atmospheric sample of each rainwater sample contemporaneity, and detect aerosol in collected atmospheric sample
Black wood charcoal quality in component, Particle density and single aerosol particle；
S5, acquisition and rainwater sample contemporaneity rainfall intensity and the average height of cloud base, and combine detect it is same
Data in period rainwater sample and atmospheric sample, calculate wet removing coefficient.
Preferably, the rainwater sample is synchronous with the acquisition of the atmospheric sample carries out, the rainwater sample and described big
The detection of gas sample product is synchronous to be carried out.
Preferably, wet removing coefficient is calculated in the step S4, specifically includes off-line calculation and in two methods of line computation,
Off-line calculation process is as follows,
Wherein, K is wet removing coefficient, C under certain particulate cloudprecipitationFor the aerosol concentration in rainwater sample,
CaerosolFor the concentration of aerosol in atmospheric sample, P is precipitation intensity, and h is the average height of cloud base；F (z) is under the height of cloud base
Aerosol concentration vertical distribution weight coefficient function；C'aerosolIt (z) is the aerosol concentration in Z height, C'aerosol(0) it is
Aerosol concentration on ground, h'(z) be aerosol vertical distribution thick layer.
Preferably, the online calculating process is as follows,
Wherein, K (dp) be partial size be dpWet removing coefficient, N under the cloud of particulate0(dp) and N1(dp) it is precipitation respectively
Preceding t0When and precipitation after t1When partial size be dpParticulate Particle density.
The object of the invention is also to provide wet removing coefficient measuring system under a kind of Atmospheric particulates cloud, the measurement system
It unites for realizing any of the above-described measurement method, including,
It is strong to obtain the identical rainfall of different heavies for realizing the block sampling to rainwater for rainwater block sampling device
Rainwater sample under the conditions of degree, different heavy difference rainfall intensities, identical heavy difference rainfall intensity；
Rainwater separation and culture device, for being pre-processed to rainwater sample, by the insoluble component in rainwater sample
It filters out, and filtered rainwater sample is stored refrigerated；
Atmosphere acquisition device, for acquiring and the atmospheric sample of rainwater sample contemporaneity；
Basic data acquisition device, for acquiring and the rainfall intensity and the average height of cloud base of rainwater sample contemporaneity；
Rainwater detection device, for detecting aerosol components and single aerosol particle in pretreated rainwater sample
Middle black wood charcoal quality；
Atmospheric detection device, for detecting in the aerosol components in atmospheric sample, Particle density and single aerosol particle
Black wood charcoal quality；
Synchro measure control module, for controlling the rainwater block sampling device, the atmosphere acquisition device and described
It is synchronous with the atmospheric detection device to be also used to control the rainwater detection device for the synchronous operation of basic data acquisition device
Operation；
Wet removing coefficient estimation block, the number for being detected according to atmospheric detection device and synchro measure control module
According to calculating wet removing coefficient.
Preferably, the measuring system further includes air drying device, and the air drying device is used for wet environment
Under atmospheric sample be dried, to obtain the atmospheric sample that can directly use for atmospheric detection device.
Preferably, the rainwater detection device includes liquid chromatograph, the first individual particle black wood charcoal instrument；The atmospheric detection dress
It sets including aerosol partial size spectrometer, the second individual particle black wood charcoal instrument and aerosol mass spectrometer.
Preferably, the rainwater separation and culture device includes syringe, the first connecting tube, the second connecting tube, filter membrane, rain
The both ends of hydromining storage and receiving flask, first connecting tube are connected with the syringe and the receiving flask respectively, and described
The both ends of two connecting tubes are connected with the first connecting tube and the device for collecting rain water respectively, and the filter membrane setting is in first connection
Guan Shang, and the tie point of second connecting tube and first connecting tube is on the syringe to the direction of the receiving flask
Positioned at the upstream of the filter membrane；The rain collecting device is connected with the rainwater block sampling device.
Preferably, the first check valve and second is respectively set unidirectionally in first connecting tube and second connecting tube
Valve, first check valve is between second connecting tube and the tie point and the filter membrane of first connecting tube.
Preferably, the rain collecting device inner hollow and upper and lower ends opening are arranged, and the rain collecting device from its
The runner that upper end is gradually narrowed to lower end formation width, the upper end of the rain collecting device and the rainwater block sampling device phase
Even, the lower end of the rain collecting device is connected with one end of second connecting tube；The other end of second connecting tube connects
In first connecting tube.
The beneficial effects of the present invention are: the 1, present invention realizes the synchro measure of aerosol load in precipitation and atmosphere, obtain
Obtain the direct measurement for the wet removing coefficient of particulate matter under cloud.2, the present invention can guarantee rainwater sample and atmospheric sample acquisition with
And detection while property, bring wet removing coefficient estimation error when greatly reducing acquisition and different detection.3, of the invention
In rainwater separation and culture device collected rainwater sample can be pre-processed, avoid rainwater sample by rainwater acid
The influence of degree leads to the variation of soluble component content.4, the air drying device in the present invention can be to atmosphere under wet environment
Sample is dried, and avoids causing because humidity is excessive component content in atmospheric sample from changing.5, the present invention realizes for the first time
The synchro measure that aerosol load in rainwater and atmosphere is realized by the development of equipment set, when making to calculate single game precipitation difference
The wet removing coefficient estimation of section is possibly realized.6, of the invention compared with previous whole field precipitation obtains single coefficient, realize support
The innovation of the wet removing coefficient measurement of single game precipitation different periods.
Detailed description of the invention
Fig. 1 is the flow diagram of measurement method in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of measuring system in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of moderate rain water of embodiment of the present invention separation pretreatment unit.
In figure: 1, syringe；11, syringe pump；2, the first connecting tube；3, the second connecting tube；4, the first check valve；5, second
Check valve；6, filter membrane；7, rain collecting device；8, receiving flask.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, it is not used to
Limit the present invention.
Embodiment one
As shown in Figure 1, providing wet removing coefficient measurement method under a kind of Atmospheric particulates cloud in the present embodiment, including such as
Lower step,
S1, block sampling is carried out to rainwater, obtains rainwater sample；
S2, rainwater sample is pre-processed, the insoluble component in rainwater sample is filtered, by filtered rainwater sample
It is stored refrigerated；
Black wood charcoal quality in S3, the aerosol components in the filtered rainwater sample of detection and single aerosol particle；
S4, acquisition and the atmospheric sample of each rainwater sample contemporaneity, and detect aerosol in collected atmospheric sample
Black wood charcoal quality in component, Particle density and single aerosol particle；
S5, acquisition and rainwater sample contemporaneity rainfall intensity and the average height of cloud base, and combine detect it is same
Data in period rainwater sample and atmospheric sample, calculate wet removing coefficient.
In the present embodiment, the rainwater sample is synchronous with the acquisition of the atmospheric sample to be carried out, the rainwater sample and institute
State the synchronous progress of detection of atmospheric sample.
In the present embodiment, wet removing coefficient is calculated in the step S4, specifically includes off-line calculation and at two kinds of line computation
Method, off-line calculation process is as follows,
Wherein, K is wet removing coefficient, C under certain particulate cloudprecipitationFor the aerosol concentration in rainwater sample,
CaerosolFor the concentration of aerosol in atmospheric sample, P is precipitation intensity, and h is the average height of cloud base；F (z) is under the height of cloud base
Aerosol concentration vertical distribution weight coefficient function；C'aerosolIt (z) is the aerosol concentration in Z height, C'aerosol(0) it is
Aerosol concentration on ground, h'(z) be aerosol vertical distribution thick layer.
Preferably, the online calculating process is as follows,
In the present embodiment, K (dp) be partial size be dpWet removing coefficient, N under the cloud of particulate0(dp) and N1(dp) respectively
It is t before precipitation0When and precipitation after t1When partial size be dpParticulate Particle density.
Embodiment two
As shown in Figure 2 to Figure 3, wet removing coefficient measuring system under a kind of Atmospheric particulates cloud is provided in the present embodiment,
The measuring system for realizing above-mentioned measurement method, including,
It is strong to obtain the identical rainfall of different heavies for realizing the block sampling to rainwater for rainwater block sampling device
Rainwater sample under the conditions of degree, different heavy difference rainfall intensities, identical heavy difference rainfall intensity；
Rainwater separation and culture device, for being pre-processed to rainwater sample, by the insoluble component in rainwater sample
It filters out, and filtered rainwater sample is stored refrigerated；
Atmosphere acquisition device, for acquiring and the atmospheric sample of rainwater sample contemporaneity；
Basic data acquisition device, for acquiring and the rainfall intensity and the average height of cloud base of rainwater sample contemporaneity；
Rainwater detection device, for detecting aerosol components and single aerosol particle in pretreated rainwater sample
Middle black wood charcoal quality；
Atmospheric detection device, for detecting in the aerosol components in atmospheric sample, Particle density and single aerosol particle
Black wood charcoal quality；
Synchro measure control module, for controlling the rainwater block sampling device, the atmosphere acquisition device and described
It is synchronous with the atmospheric detection device to be also used to control the rainwater detection device for the synchronous operation of basic data acquisition device
Operation；
Wet removing coefficient estimation block, the number for being detected according to atmospheric detection device and synchro measure control module
According to calculating wet removing coefficient.
In the present embodiment, the rainwater block sampling device can automatically adjust sampling quantity size, mainly use telescopic 2
Grade rainwater accepts pallet, and the undertaking pallet expands or shrinks sampling area by the size of rainwater-collecting amount automatically, and then adjusts
Save sampling quantity size and sample frequency.The block sampling of rainwater is realized by the way of the rotatable switching rainwater-collecting pipeline of spiral shell, with
Obtain precipitation different times (early, middle, late stage) rainwater sample, distinguish cloud in and below-cloud scavenging process, be also equipped with to single game drop
The ability for being collected and analyzing of rainwater sample under the conditions of water different times, different raininess.For single game precipitation difference when
Section accepts the technology of pallet size using automatic adjustment, realizes fining cascade sampling, improves recognizing comprehensively to Precipitation Process
Know.
In the present embodiment, the rainwater separation and culture device include syringe 1, the first connecting tube 2, the second connecting tube 3,
Filter membrane 6, rain collecting device 7 and receiving flask 8, the both ends of first connecting tube 2 respectively with the syringe 1 and the receiving flask
8 are connected, and the both ends of second connecting tube 3 are connected with the first connecting tube 2 and the device for collecting rain water respectively, and the filter membrane 6 is set
It sets in first connecting tube 2, and the tie point of second connecting tube 3 and first connecting tube 2 is in the syringe 1
It is located at the upstream of the filter membrane 6 on to the direction of the receiving flask 8；The rain collecting device 7 is filled with the rainwater block sampling
It sets connected.
In the present embodiment, the first check valve 4 and are respectively set in first connecting tube 2 and second connecting tube 3
Two check valves 5, first check valve 4 are located at tie point and the filter of second connecting tube 3 with first connecting tube 2
Between film 6.
In the present embodiment, 7 inner hollow of rain collecting device and the setting of upper and lower ends opening, and the rain collecting device
7 runners gradually narrowed from the upper end to lower end formation width, the upper end of the rain collecting device 7 and the rainwater block sampling
Device is connected, and the lower end of the rain collecting device 7 is connected with one end of second connecting tube 3；Second connecting tube 3 it is another
One end is connected in first connecting tube 2.
In the present embodiment, the use process of the rainwater pretreatment unit are as follows: the rain taken through rainwater block sampling device
Water enters the rain collecting device 7 through the upper end of the rain collecting device 7, while rain collecting device 7 collects rainwater, injection
Device 1 is pushed via syringe pump 11 passes through rainwater sample in 5 inhalation syringe 1 of second one-way valve, pumping velocity and rain collecting
Speed is consistent or slightly slowly to avoid sucking air, and the first check valve 4 is not turned at this time.When sample reaches particular volume in syringe 1
Product, syringe pump 11 reversely push, and sample are pushed through filter membrane 6 by the first check valve 4, solid insoluble is stopped and protected by filter membrane 6
It deposits, while liquid sample enters receiving flask 8, second one-way valve 5 is not turned at this time.After sample has all filtered in syringe 1, make
This group of filter membrane 6 and receiving flask 8 are disconnected from 4 exit of the first check valve with mechanical arm, automatic switch removed and will under
One group of clean filter membrane 6 and the mobile so far position of empty receiving flask 8, then it is connected with the first check valve 4 by mechanical arm, continue
The filtering of next section of rainwater sample.
In the present embodiment, to the end of rainfall or sampling, filter membrane 6 is collected and by dry and weighing, sampling front and back quality
Difference is insoluble matter quality in rainwater；The filtered rainwater sample collection refrigerates guarantor into 100ml teflon receiving flask 8
It deposits, preservation rainwater sample is not influenced by off-line analysis and acquisition time difference as far as possible, is carried out later to water sample in receiving flask 8
The analysis such as ion chromatography, can get total soluble solid and each main component in rainwater, such as the quality of sulfate, nitrate.
In the present embodiment, the synchro measure control module identifies precipitation signal when precipitation occurs, and reads rainwater rapidly
The time of block sampling device and atmosphere acquisition device, and it is recorded as the rain collecting time started, realize rain collecting and atmosphere
The synchronization of the time of sample acquisition.Precipitation signal is identified when precipitation occurs, and switches Particle density rapidly or mass concentration instrument is surveyed
The gas circuit of amount is switched to by original normal atmosphere through the pretreated gas circuit of this system.The atmosphere acquisition device of this system with
Rainwater block sampling device is synchronous, collects the atmospheric sample in the same period and passes to atmospheric detection device progress particulate matter
The analysis of the elements such as component or Particle density.
In the present embodiment, the measuring system further includes air drying device, and the air drying device is used for humidity
Atmospheric sample under environment is dried, to obtain the atmospheric sample that can directly use for atmospheric detection device.It is described
Atmospheric sample under wet environment is dried in air drying device, avoids causing Particle density or quality dense because humidity is excessive
It spends instrument detection error or shortage of data, consideration is by steam large effect.Air drying module and atmospheric detection fill
Set it is connected, make atmospheric detection device obtain can atmospheric sample measured directly, while calculating drying device in the different precipitation period
Working efficiency, obtain optimal physical control parameter.Drying device is adjusted to optimal drying regime.
In the present embodiment, the rainwater of different periods in single game precipitation is collected respectively and is distinguished by its dissolubility by measuring system
It is stored in filter membrane 6 or receiving flask 8.Simultaneously using synchronization control module and air drying module realize with rainwater detection device and
The time of atmospheric detection device and the consistency of frequency finally divide online and offline two ways to calculate wet removing coefficient, obtain
The measurement of the wet removing coefficient of particulate matter of single game precipitation different periods.
In the present embodiment, the calculating of the wet removing coefficient of aerosol needs while measuring the aerosol in rainwater and atmosphere to contain
Amount, therefore the synchronously control master most important, realization samples the two and measures is measured while rainwater sample and atmospheric sample
If controlling rainwater block sampling device and atmosphere acquisition device by synchro measure control module.Atmosphere acquisition device includes three
A gas production bag, three aspiration pumps and a solenoid valve.When rainwater block sampling device starts the collection of paragraph 1 rainwater sample,
The syringe 1 that i.e. rainwater is automatically separated in pre- device starts to aspirate rainwater, and aspiration pump A receives same signal and brings into operation, will be big
Gas sample product are pumped into gas production bag A, until syringe 1 stops suction.Solenoid valve switches the sample introduction gas circuit of atmospheric detection device at this time
To the outlet end of gas production bag A, the analysis of paragraph 1 air sample is carried out.Meanwhile aspiration pump B starts to inflate gas production bag B, acquisition
2nd section of air sample.When the 2nd section of sample collection stops, the sample introduction gas circuit of atmospheric detection device is switched to gas production by solenoid valve
The outlet end of bag B, carries out the analysis of the 2nd section of air sample.Meanwhile aspiration pump A takes surplus air sample in gas production bag A away,
It is sampled to next time, and aspiration pump C starts to inflate gas production bag C, acquires the 3rd section of air sample, so recycles.In synchronization,
One sampler bag is collecting sample, and a sampler bag is providing sample to the instruments such as atmospheric detection device, a sampler bag for
Next time, sampling carried out evacuation preparation.
In the present embodiment, the rainwater detection device includes liquid chromatograph and the first individual particle black wood charcoal instrument SP2；It is described big
Gas detection device includes aerosol partial size spectrometer SMPS, the second individual particle black wood charcoal instrument SP2 and aerosol mass spectrometer AMS.Liquid phase color
Spectrometer and the first individual particle black wood charcoal instrument SP2 are used to detect black wood charcoal in aerosol components and the single aerosol particle in rainwater sample
Quality, aerosol partial size spectrometer SMPS, the second individual particle black wood charcoal instrument SP2 and aerosol mass spectrometer AMS are for detecting atmospheric sample
In aerosol components, black wood charcoal quality in Particle density and single aerosol particle.
By using above-mentioned technical proposal disclosed by the invention, following beneficial effect has been obtained:
The present invention provides a kind of wet removing coefficient measurement method of Atmospheric particulates and system, the present invention realize precipitation and
The synchro measure of aerosol load in atmosphere obtains the direct measurement for the wet removing coefficient of particulate matter under cloud；The present invention can
Guarantee rainwater sample and atmospheric sample acquisition and detection while property, bring when greatly reducing acquisition and different detection
Wet removing coefficient estimation error；Rainwater separation and culture device can pre-process collected rainwater sample, avoid rain
Water sample is influenced the variation for leading to soluble component content by rainwater acidity；Air drying device can be under wet environment
Atmospheric sample is dried, and avoids causing because humidity is excessive component content in atmospheric sample from changing；The present invention is real for the first time
The synchro measure that aerosol load in rainwater and atmosphere is now realized by the development of equipment set makes to calculate single game precipitation difference
The wet removing coefficient estimation of period is possibly realized；The present invention realizes support compared with previous whole field precipitation obtains single coefficient
The innovation of the wet removing coefficient measurement of single game precipitation different periods.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
Depending on protection scope of the present invention.
Claims (10)
1. wet removing coefficient measurement method under a kind of Atmospheric particulates cloud, it is characterised in that: include the following steps,
S1, block sampling is carried out to rainwater, obtains rainwater sample；
S2, rainwater sample is pre-processed, filters the insoluble component in rainwater sample, filtered rainwater sample is refrigerated
It saves；
Black wood charcoal quality in S3, the aerosol components in the filtered rainwater sample of detection and single aerosol particle；
S4, acquisition and the atmospheric sample of each rainwater sample contemporaneity, and detect aerosol components in collected atmospheric sample,
Black wood charcoal quality in Particle density and single aerosol particle；
S5, acquisition and rainwater sample contemporaneity rainfall intensity and the average height of cloud base, and combine the contemporaneity that detects
Data in rainwater sample and atmospheric sample calculate wet removing coefficient.
2. wet removing coefficient measurement method under Atmospheric particulates cloud according to claim 1, it is characterised in that: the rainwater
Sample is synchronous with the acquisition of the atmospheric sample to carry out, and the rainwater sample is synchronous with the detection of the atmospheric sample to carry out.
3. wet removing coefficient measurement method under Atmospheric particulates cloud according to claim 1, it is characterised in that: the step
Wet removing coefficient is calculated in S4, specifically includes off-line calculation and in two methods of line computation, off-line calculation process is as follows,
Wherein, K is wet removing coefficient, C under certain particulate cloudprecipitationFor the aerosol concentration in rainwater sample, Caerosol
For the concentration of aerosol in atmospheric sample, P is precipitation intensity, and h is the average height of cloud base；F (z) is the aerosol under the height of cloud base
Concentration vertical distribution of weights coefficient function；C'aerosolIt (z) is the aerosol concentration in Z height, C'aerosol(0) on ground
Aerosol concentration, h'(z) be aerosol vertical distribution thick layer.
4. wet removing coefficient measurement method under Atmospheric particulates cloud according to claim 3, it is characterised in that: described online
Calculating process is as follows,
Wherein, K (dp) be partial size be dpWet removing coefficient, N under the cloud of particulate0(dp) and N1(dp) it is t before precipitation respectively0
When and precipitation after t1When partial size be dpParticulate Particle density.
5. wet removing coefficient measuring system under a kind of Atmospheric particulates cloud, the measuring system is for realizing the claims 1
To 4 any measurement methods, it is characterised in that: including,
Rainwater block sampling device obtains the identical rainfall intensity of different heavies, no for realizing the block sampling to rainwater
With the rainwater sample under the conditions of heavy difference rainfall intensity, identical heavy difference rainfall intensity；
Rainwater separation and culture device filters the insoluble component in rainwater sample for pre-processing to rainwater sample
Fall, and filtered rainwater sample is stored refrigerated；
Atmosphere acquisition device, for acquiring and the atmospheric sample of rainwater sample contemporaneity；
Basic data acquisition device, for acquiring and the rainfall intensity and the average height of cloud base of rainwater sample contemporaneity；
Rainwater detection device is black in aerosol components and single aerosol particle in pretreated rainwater sample for detecting
Charcoal quality；
Atmospheric detection device, for detecting the aerosol components in atmospheric sample, black wood charcoal in Particle density and single aerosol particle
Quality；
Synchro measure control module, for controlling the rainwater block sampling device, the atmosphere acquisition device and the basis
The synchronous operation of data acquisition device is also used to control rainwater detection device fortune synchronous with the atmospheric detection device
Row；
Wet removing coefficient estimation block, the data for being detected according to atmospheric detection device and synchro measure control module, meter
Calculate wet removing coefficient.
6. wet removing coefficient measuring system under Atmospheric particulates cloud according to claim 5, it is characterised in that: the measurement
System further includes air drying device, and the air drying device is for being dried place to the atmospheric sample under wet environment
Reason, to obtain the atmospheric sample that can directly use for atmospheric detection device.
7. wet removing coefficient measuring system under Atmospheric particulates cloud according to claim 5, it is characterised in that: the rainwater
Detection device includes liquid chromatograph, the first individual particle black wood charcoal instrument；The atmospheric detection device includes aerosol partial size spectrometer,
Two individual particle black wood charcoal instrument and aerosol mass spectrometer.
8. wet removing coefficient measuring system under Atmospheric particulates cloud according to claim 5, it is characterised in that: the rainwater
Separation and culture device includes syringe, the first connecting tube, the second connecting tube, filter membrane, rain collecting device and receiving flask, and described
The both ends of one connecting tube are connected with the syringe and the receiving flask respectively, and the both ends of second connecting tube are respectively with first
Connecting tube is connected with the device for collecting rain water, and the filter membrane is arranged in first connecting tube, and second connecting tube with
The tie point of first connecting tube is located at the upstream of the filter membrane on the syringe to the direction of the receiving flask；It is described
Rain collecting device is connected with the rainwater block sampling device.
9. wet removing coefficient measuring system under Atmospheric particulates cloud according to claim 8, it is characterised in that: described first
The first check valve and second one-way valve are respectively set in connecting tube and second connecting tube, first check valve is located at described
Between second connecting tube and the tie point and the filter membrane of first connecting tube.
10. wet removing coefficient measuring system under Atmospheric particulates cloud according to claim 8, it is characterised in that: the rain
Hydromining storage inner hollow and upper and lower ends opening are arranged, and the rain collecting device from the upper end to lower end formation width gradually
Narrowed runner, the upper end of the rain collecting device are connected with the rainwater block sampling device, under the rain collecting device
End is connected with one end of second connecting tube；The other end of second connecting tube is connected in first connecting tube.
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