CN109752227A - A kind of gaseous state SVOCs standard sample preparation facilities and preparation method thereof - Google Patents
A kind of gaseous state SVOCs standard sample preparation facilities and preparation method thereof Download PDFInfo
- Publication number
- CN109752227A CN109752227A CN201910059551.8A CN201910059551A CN109752227A CN 109752227 A CN109752227 A CN 109752227A CN 201910059551 A CN201910059551 A CN 201910059551A CN 109752227 A CN109752227 A CN 109752227A
- Authority
- CN
- China
- Prior art keywords
- svocs
- gaseous state
- hole
- standard sample
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- 238000009434 installation Methods 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 239000012159 carrier gas Substances 0.000 claims abstract description 7
- 230000004888 barrier function Effects 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 4
- 239000005416 organic matter Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000011156 evaluation Methods 0.000 description 10
- 238000004164 analytical calibration Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 230000036541 health Effects 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 150000004074 biphenyls Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- -1 phthalic acid ester Chemical class 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to environmental protection technical fields; disclose a kind of gaseous state SVOCs standard sample preparation facilities and preparation method thereof; include: container, has upper end that there is the accommodating chamber of opening in the internal structure of the container, SVOCs sample is contained in the accommodating chamber and distributes source；Lid is sealingly fastened on the opening position of the upper end of the container, is configured with installation through-hole on the lid；And porous membrane structure, it is embedded in the installation through-hole, wherein the SVOCs sample distributes the gaseous state SVOCs that source gives out and is diffused into outside by porous membrane structure, it is taken out of by the carrier gas of certain flow rate, obtains certain density gaseous state SVOCs standard sample.Gaseous state SVOCs standard sample preparation facilities has the advantages that high to gaseous state SVOCs measurement accuracy and measurement efficiency is high.
Description
Technical field
The present invention relates to environmental protection technical field, more particularly to a kind of gaseous state SVOCs standard sample preparation facilities and
Preparation method.
Background technique
SVOCs refers to semi-volatile organic matter of the boiling point within the scope of 240~400 DEG C, and saturated vapor pressure is lower, absorption
Property is very strong.Compared with VOCs, SVOC is more stable in the environment, not degradable, can indoors in environment there are the several years or it is longer when
Between, it is easy to it causes damages to human health.The concentration of accurate detection building materials and the SVOCs in air, is evaluation and control
The key link of SVOCs pollution.The accurate detection of SVOCs be unable to do without SVOCs standard sample, since the boiling point of SVOCs is high, mainly
It is used to prepare solution-type standard sample, is difficult to prepare gaseous state standard sample, thus, gaseous state SVOCs standard sample at present
Missing all lacks necessary standard sample for sampling efficiency, instrument calibration, the environmental chamber evaluation etc. of SVOCs, seriously restricts
The accurate detection of SVOCs concentration in building materials and air.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of gaseous state SVOCs standard sample preparation facilities and preparation method thereof, at least to solve
Certainly the sampling efficiency, instrument calibration, environmental chamber of SVOCs are commented due to the missing of gaseous state SVOCs standard sample in the prior art
Valence etc. all lacks necessary standard sample, and the technology accurately detected for seriously constraining SVOCs concentration in building materials and air is asked
Topic.
(2) technical solution
In order to solve the above-mentioned technical problem, according to the first aspect of the invention, a kind of gaseous state SVOCs standard sample system is provided
Standby device, comprising: container, in the accommodating chamber that the internal structure of the container has upper end to have opening, described
It is contained with SVOCs sample in accommodating chamber and distributes source；Lid is sealingly fastened on the opening position of the upper end of the container,
Installation through-hole is configured on the lid；And porous membrane structure, it is embedded in the installation through-hole, wherein described
SVOCs sample distributes the gaseous state SVOCs that source gives out and is diffused into outside by porous membrane structure.
Wherein, the porous membrane structure includes the barrier film being embedded in the through-hole, wherein in the barrier film
It is configured with multiple holes, wherein the accommodating chamber is connected to by each hole with outside.
Wherein, the porous membrane structure further includes that the lower seal that the lower surface of the barrier film is arranged in and setting exist
The upper seal of the upper surface of the barrier film, wherein first through hole is configured in the lower seal, in the upper sealing
The second through-hole is configured on circle, the first through hole is oppositely arranged up and down with second through-hole.
Wherein, the aperture of the first through hole is equal with the aperture of second through-hole, wherein the hole of the first through hole
The aperture of diameter and second through-hole is respectively less than the outer profile size of the barrier film.
Wherein, the manufacture material of the lower seal and the upper seal is flexible material or elastic material.
Wherein, the manufacture material of the barrier film is organic matter and/or inorganic matter.
Wherein, the container further includes the passivating coating being arranged on the inner surface of the accommodating chamber.
Wherein, the lid is removably sealingly fastened on the opening position of the container.
Wherein, the magnitude range of the hole in the barrier film is greater than 0 and less than 5 microns；The barrier film
The magnitude range of thickness is greater than 0 and less than 500 microns.
According to a second aspect of the present application, a kind of preparation method of gaseous state SVOCs standard sample is also provided, comprising: will be pre-
If the SVOCs sample of volume distributes source and is put into container；The container for distributing source equipped with SVOCs sample is put into
Constant temperature distributes interior, and being weighed to the initial mass that SVOCs sample distributes source and recording initial mass is m0；It is set every one
The quality that fixed period Δ T just distributes source to SVOCs sample carries out weighing the quality that primary and record weighs every time being mn, base
In the quality that weighs every time and interval time section is weighed to obtain the emission rate that SVOCs sample distributes source, based on distributing speed
The ratio of flow rate of carrier gas outside rate and accommodating chamber is in the hope of being discharged into the concentration of external gaseous state SVOCs.
(3) beneficial effect
Gaseous state SVOCs standard sample preparation facilities provided by the invention has the advantages that compared with prior art
It is put into container by the way that the SVOCs sample of preset vol is distributed source.Then, lid is covered tightly.It will be equipped with
The container that SVOCs sample distributes source is put into constant temperature and distributes interior, and the initial mass for distributing source to SVOCs sample claims
Measuring and recording initial mass is m0.It is weighed every the quality that the period Δ T that one sets just distributes source to SVOCs sample
The quality that primary and record weighs every time is mn(n refers to natural number) based on the quality weighed every time and weighs interval time section
To obtain the emission rate that SVOCs sample distributes source, the ratio based on the flow rate of carrier gas outside emission rate and accommodating chamber in the hope of
The concentration of external gaseous state SVOCs must be discharged into.It can be seen that using the gaseous state SVOCs standard sample preparation facilities of the application
It can more accurately detect the concentration of the gaseous state SVOCs in air, further, people can be according to gaseous state SVOCs
The size of concentration take appropriate measures in time, it is ensured that people can be in a healthy environment, avoid to people
Health care belt endanger.
In addition, the gaseous state SVOCs standard sample preparation facilities of the application also has, structure is simple, easily operated and precision is high
The advantages of, so as to provide standard sample for instrument calibration, sampling evaluation, environmental chamber evaluation.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the gaseous state SVOCs standard sample preparation facilities of embodiments herein；
Fig. 2 is the schematic diagram of the application scenarios of the gaseous state SVOCs standard sample preparation facilities of embodiments herein；
Fig. 3 is the step flow diagram of the preparation method of the gaseous state SVOCs standard sample of embodiments herein.
In figure, 1: container；11: accommodating chamber；200:SVOCs sample distributes source；2: lid；3: porous film knot
Structure；31: barrier film；32: lower seal；33: upper seal；300: constant temperature distributes room.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As depicted in figs. 1 and 2, schematically show that gaseous state SVOCs standard sample preparation facilities includes holding in figure
Container 1, lid 2 and porous membrane structure 3.
In embodiments herein, there is upper end that there is the accommodating chamber 11 being open in the internal structure of the container 1,
SVOCs sample, which is contained with, in the accommodating chamber 11 distributes source 200.
Lid 2 is sealingly fastened on the opening position of the upper end of the container 1, is configured with installation through-hole on the lid 2
(not shown).Preferably, which can be provided with the central area of the lid 2.The setting of the lid 2, can be right
Accommodating chamber 11 plays certain sealing function, in addition, the setting of the lid 2, also plays one to the porous membrane structure 3 of placement
The fixed effect fixed and supported.
It is readily appreciated that, the setting of the installation through-hole, is to place multi-pore structure 3.In order to realize to the porous knot
The installation and fixation of structure 3 can then be configured with centerline direction of the opening towards installation through-hole on the hole wall of the installation through-hole
Annular groove, the groove width of annular groove can be identical as the thickness of porous membrane structure 3.
Specifically, it by the way that porous membrane structure 3 to be fastened in the annular groove, can be realized to the porous membrane structure 3
It installs and fixed.
It should also be noted that, the pore size of the installation through-hole ranges preferably from 2 millimeters to 20 millimeters.The installation through-hole
Setting, the diffusion area of barrier film 31 as described below can effectively be adjusted.
Porous membrane structure 3 is embedded in the installation through-hole, wherein the SVOCs sample distributes source and dissipates 200 gaseous states issued
SVOCs is diffused into outside through the porous membrane structure 3.Specifically, it is put by the way that the SVOCs sample of preset vol is distributed source 200
Enter into container 1.Then, lid 2 is covered tightly.The container 1 for distributing source 200 equipped with SVOCs sample is put into constant temperature
It distributes in room 300, being weighed to the initial mass that SVOCs sample distributes source 200 and recording initial mass is m0.Every one
The quality that the period Δ T set just distributes source 200 to SVOCs sample weigh it is primary and record the quality that weighs every time as
mn(n refers to natural number) distributes source 200 based on the quality and weighing interval time section weighed every time to obtain SVOCs sample
Emission rate, the ratio based on the flow rate of carrier gas outside emission rate and accommodating chamber 11 is in the hope of being discharged into external gaseous state
The concentration of SVOCs.It can be seen that the gaseous state SVOCs standard sample preparation facilities using the application can be detected more accurately
The concentration of gaseous state SVOCs in air out, further, people can be according to the sizes of the concentration of gaseous state SVOCs come in time
Ground takes appropriate measures, it is ensured that people can be in a healthy environment, avoid bringing harm to people's health.
In addition, the gaseous state SVOCs standard sample preparation facilities of the application also has, structure is simple, easily operated and precision is high
The advantages of, so as to provide standard sample for instrument calibration, sampling evaluation, environmental chamber evaluation.
It should be noted that it is 50~500 DEG C that the constant temperature, which distributes the temperature range in room 300, temperature-controlled precision is less than ± 0.1
℃。
In a specific embodiment, the internal diameter of the accommodating chamber 11 in the container 1 is preferably 30 millimeters, outer diameter
Preferably 34 millimeters, in fact it is highly preferred that be 35 millimeters.
The SVOCs sample distribute source 200 be high-purity SVOCs distribute source, specifically, high-purity SVOCs distribute source refer to it is pure
The semi-volatile organic matters such as phthalic acid ester, polycyclic aromatic hydrocarbon, polybrominated biphenyls of the degree greater than 99%.
It should also be noted that, it is the total of container 1 that the SVOCs sample, which distributes volume of the source 200 in container 1,
1/4 times to 2/3 times of volume.In this way it can be ensured that generating enough gaseous state SVOCs, test midway gaseous state SVOCs is avoided to occur
Insufficient situation.
As shown in Figure 1, the porous membrane structure 3 includes being embedded in the comparison preferred embodiment of the application
Barrier film 31 in the through-hole, wherein multiple hole (not shown)s are configured in the barrier film 31, wherein the receiving
Chamber 11 is connected to by each hole with outside.It should be noted that the setting of the hole, on the one hand, may be implemented
The accommodating chamber 11 and external connection, on the other hand, additionally it is possible to so that distributing the gaseous state that source 200 volatilizes through SVOCs sample
SVOCs is diffused into outside through the hole.It should also be noted that, can be realized by the size for changing hole to gaseous state
The adjusting of SVOCs diffusion rate, that is, when increasing the aperture of corresponding hole, can correspondingly increase the expansion of gaseous state SVOCs
Dissipate rate.
When reducing the aperture of corresponding hole, the diffusion rate of gaseous state SVOCs can be correspondingly reduced.
In another preferred embodiment of the application, which further includes being arranged in the barrier film 31
Lower surface lower seal 32 and be arranged in the barrier film 31 upper surface upper seal 33, wherein in the lower seal
It is configured with first through hole (not shown) on 32, the second through-hole (not shown) is configured in the upper seal 33, it should
First through hole is oppositely arranged up and down with second through-hole.It should be noted that the setting of the lower seal 32, on the one hand, can be with
Certain supporting role is played to barrier film 31, avoids the hardness of barrier film 31 lower, so that barrier film 31 deforms
Or there is a situation where fall out of installation through-hole on lid 2.On the other hand, which can play certain close
Envelope effect, avoiding the gaseous state SVOCs volatilized from other positions in addition to porous membrane structure 3, there is a situation where reveal.
The upper seal 33 play the role of playing the role of with above-mentioned lower seal 32 it is identical, for save length for the sake of,
It is not detailed herein.
In addition it is also necessary to which explanation, the setting of the first through hole and the second through-hole can be convenient the gaseous state volatilized
SVOCs can be diffused into outside through the first through hole and the second through-hole.
It should also be noted that, passing through so that the first through hole and the second through-hole are oppositely arranged up and down, so as to more
Easily guide the gaseous state SVOCs volatilized that can successfully be discharged into the outside of container 1.
In one embodiment, specific restriction is not done for the shape of the first through hole and the second through-hole, it can be with
For round, oval, rectangular, rectangle, triangle etc..
In a preferred embodiment, the aperture of the first through hole is equal with the aperture of second through-hole, wherein this
The aperture of one through-hole and the aperture of second through-hole are respectively less than the outer profile size of the barrier film 31.Specifically, by making this
The aperture of first through hole is equal with the aperture of second through-hole, so that the difficulty of manufacture craft is lessened, it is also possible to reach
The purpose of the outside of container 1 is discharged into the gaseous state SVOCs conveniently volatilized.
In a preferred embodiment, the manufacture material of the lower seal 32 and the upper seal 33 is flexible material
Or elastic material.Manufacture material by making the lower seal 32 and the upper seal 33 is flexible material or elastic material
Matter avoids it from causing can not be successfully because installation space is limited so as to facilitate the installation of lower seal 32 and upper seal 33
The case where installing or being damaged during installation.
In a preferred embodiment, the manufacture material of the barrier film 31 is organic matter and/or inorganic matter.It needs to illustrate
, which should be porous film, to facilitate the gaseous state SVOCs that will volatilize out to be discharged into outside, further, with
Ensure accurately to determine the concentration of gaseous state SVOCs.
In a preferred embodiment, the manufacture material of the lower seal 32 and upper seal 33 can be fluorubber or complete
Fluorine ether material.
In another preferred embodiment, which further includes being arranged on the inner surface of the accommodating chamber 11
Passivating coating (not shown).The passivating coating has the characteristic of low adsorption and low release.It should be noted that the passivation
The setting of coating can play a protective role to the inner surface of accommodating chamber 11, avoid inner surface and the volatilization of accommodating chamber 11
Gaseous state SVOCs out is chemically reacted, additionally it is possible to be effectively prevented from the inner surface of accommodating chamber 11 to the gas volatilized
There is a situation where adsorb by state SVOCs.Further, it is ensured that the accuracy for measuring the volume of the gaseous state SVOCs volatilized avoids
Influence the measurement to the concentration of gaseous state SVOCs.
As shown in Figure 1, in a preferred embodiment, which is removably sealingly fastened on the container 1
Opening position.Specifically, the lid 2 can be connected through a screw thread, snap connection or plug-in connection etc. connection type realize
With the fixed seal connection of the opening of container 1.
Using detachable connection type, so as to facilitate the installation and removal of lid 2, further, convenient pair
SVOCs sample distributes the real-time of the quality in source 200 and neatly adjusts.
In another preferred embodiment, the magnitude range of the hole in the barrier film 31 is greater than 0 and micro- less than 5
Rice.
The magnitude range of the thickness of the barrier film 31 is greater than 0 and less than 500 microns.It should be noted that if the barrier
The thickness of film 31 is too thick, then will affect the emission rate of the gaseous state SVOCs volatilized, that is, while thickening barrier film 31,
It is equivalent to and extends the path that gaseous state SVOCs is discharged outward to a certain extent, so that it is outside also just to extend gaseous state SVOCs
The time of discharge reduces the emission rate of gaseous state SVOCs.
As shown in figure 3, according to a second aspect of the present application, a kind of preparation method of gaseous state SVOCs standard sample is also provided,
Include:
The SVOCs sample of preset vol is distributed source 200 and is put into container 1 by step S1.
The container 1 for distributing source 200 equipped with SVOCs sample is put into constant temperature and distributed in room 300 by step S2, right
It is m that the initial mass that SVOCs sample distributes source 200, which is weighed and records initial mass,0。
Step S3 carries out weighing one every the quality that the period Δ T that one sets just distributes source 200 to SVOCs sample
The quality that secondary and record weighs every time is mn, based on the quality weighed every time and interval time section is weighed to obtain SVOCs sample
Product distribute the emission rate in source 200, are discharged into based on the ratio of emission rate and the flow rate of carrier gas outside accommodating chamber 11
The concentration of external gaseous state SVOCs.It can be seen that the present processes have, measurement is accurate, measurement efficiency is high and operation letter
Single advantage can provide standard sample for instrument calibration, sampling evaluation, environmental chamber evaluation.
In a specific embodiment, the measurement that the emission rate in source 200 is distributed to SVOCs sample uses weighing method,
Specifically, t at regular intervals1、t2、t3、t4、t5..., the balance for being 0.00001g with precision weighs SVOCs sample and distributes source
200 quality m1、m2、m3、m4、m5……。
Then, using emissioning time t as abscissa, SVOCs sample distribute source 200 quality m be ordinate, calculate quality with
The variation relation of time, wherein
M=-kt+m1,
Wherein, k is the emission rate (g/min) that SVOCs sample distributes source 200, and the concentration of gaseous state SVOCs is C=k/v
(g/L).Wherein, V is the air velocity in known accommodating chamber 11.
In conclusion being put into container 1 by the way that the SVOCs sample of preset vol is distributed source 200.Then, it covers
Tight lid 2.The container 1 for distributing source 200 equipped with SVOCs sample is put into constant temperature to distribute in room 300, to SVOCs sample
It is m that the initial mass for distributing source 200, which is weighed and records initial mass,0.It is just right every the period Δ T that one sets
The quality that SVOCs sample distributes source 200 carries out weighing the quality that primary and record weighs every time being mn(n refers to natural number), is based on
The quality that weighs every time and interval time section is weighed to obtain the emission rate that SVOCs sample distributes source 200, based on distributing speed
The ratio of flow rate of carrier gas outside rate and accommodating chamber 11 is in the hope of being discharged into the concentration of external gaseous state SVOCs.It can be seen that making
It can more accurately detect that the gaseous state SVOCs's in air is dense with the gaseous state SVOCs standard sample preparation facilities of the application
Degree, further, people can take appropriate measures in time according to the size of the concentration of gaseous state SVOCs, it is ensured that people
Can be in a healthy environment, avoid bringing harm to people's health.
In addition, the gaseous state SVOCs standard sample preparation facilities of the application also has, structure is simple, easily operated and precision is high
The advantages of, so as to provide standard sample for instrument calibration, sampling evaluation, environmental chamber evaluation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of gaseous state SVOCs standard sample preparation facilities characterized by comprising
Container, in the accommodating chamber that the internal structure of the container has upper end to have opening, in the accommodating chamber
It is inside contained with SVOCs sample and distributes source；
Lid is sealingly fastened on the opening position of the upper end of the container, is configured with installation through-hole on the lid；With
And
Porous membrane structure is embedded in the installation through-hole, wherein the SVOCs sample distributes the gaseous state that source gives out
SVOCs is diffused into outside by porous membrane structure.
2. gaseous state SVOCs standard sample preparation facilities according to claim 1, which is characterized in that the porous film knot
Structure includes the barrier film being embedded in the through-hole, wherein multiple holes are configured in the barrier film, wherein the appearance
Chamber of receiving is connected to by each hole with outside.
3. gaseous state SVOCs standard sample preparation facilities according to claim 2, which is characterized in that the porous film knot
Structure further includes that the lower seal of the lower surface of the barrier film is arranged in and the upper sealing of the upper surface of the barrier film is arranged in
Circle, wherein it is configured with first through hole in the lower seal, is configured with the second through-hole in the upper seal, described the
One through-hole is oppositely arranged up and down with second through-hole.
4. gaseous state SVOCs standard sample preparation facilities according to claim 3, which is characterized in that the first through hole
Aperture is equal with the aperture of second through-hole, wherein the aperture of the first through hole and the aperture of second through-hole are small
In the outer profile size of the barrier film.
5. gaseous state SVOCs standard sample preparation facilities according to claim 3, which is characterized in that the lower seal and
The manufacture material of the upper seal is flexible material or elastic material.
6. gaseous state SVOCs standard sample preparation facilities according to claim 2, which is characterized in that the system of the barrier film
Producing material matter is organic matter and/or inorganic matter.
7. gaseous state SVOCs standard sample preparation facilities according to claim 1, which is characterized in that the container is also
Passivating coating on inner surface including the accommodating chamber is arranged in.
8. gaseous state SVOCs standard sample preparation facilities according to claim 1, which is characterized in that the lid is detachable
It is sealingly fastened on the opening position of the container likes.
9. according to gaseous state SVOCs standard sample preparation facilities described in claim 2,3,4,5 or 6, which is characterized in that the resistance
The magnitude range of the hole on diaphragm is greater than 0 and less than 5 microns；
The magnitude range of the thickness of the barrier film is greater than 0 and less than 500 microns.
10. a kind of preparation method of gaseous state SVOCs standard sample characterized by comprising
The SVOCs sample of preset vol is distributed source to be put into container；
The container for distributing source equipped with SVOCs sample is put into constant temperature and distributes interior, the initial of source is distributed to SVOCs sample
It is m that quality, which is weighed and records initial mass,0；
It carries out weighing primary every the quality that the period Δ T that one sets just distributes source to SVOCs sample and records title every time
The quality of amount is mn, distributing for source is distributed to obtain SVOCs sample based on the quality and weighing interval time section weighed every time
Rate, the ratio of the flow rate of carrier gas based on the air outside emission rate and accommodating chamber is in the hope of being discharged into external gaseous state
The concentration of SVOCs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059551.8A CN109752227A (en) | 2019-01-22 | 2019-01-22 | A kind of gaseous state SVOCs standard sample preparation facilities and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059551.8A CN109752227A (en) | 2019-01-22 | 2019-01-22 | A kind of gaseous state SVOCs standard sample preparation facilities and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109752227A true CN109752227A (en) | 2019-05-14 |
Family
ID=66406125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910059551.8A Pending CN109752227A (en) | 2019-01-22 | 2019-01-22 | A kind of gaseous state SVOCs standard sample preparation facilities and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109752227A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290261A (en) * | 2008-06-25 | 2008-10-22 | 清华大学 | Standard emission sample for environmental chamber combination property detection and its detection method |
| CN101881688A (en) * | 2010-06-13 | 2010-11-10 | 清华大学 | Standard distribution sample for detecting comprehensive performance of environmental chamber and detection method thereof |
| CN108528981A (en) * | 2018-07-04 | 2018-09-14 | 北京市劳动保护科学研究所 | A kind of VOCs standard distribution samples for environmental chamber performance evaluation |
| CN209559602U (en) * | 2019-01-22 | 2019-10-29 | 南通东昌环保设备科技有限公司 | A kind of gaseous state SVOCs standard sample preparation facilities |
-
2019
- 2019-01-22 CN CN201910059551.8A patent/CN109752227A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290261A (en) * | 2008-06-25 | 2008-10-22 | 清华大学 | Standard emission sample for environmental chamber combination property detection and its detection method |
| CN101881688A (en) * | 2010-06-13 | 2010-11-10 | 清华大学 | Standard distribution sample for detecting comprehensive performance of environmental chamber and detection method thereof |
| CN108528981A (en) * | 2018-07-04 | 2018-09-14 | 北京市劳动保护科学研究所 | A kind of VOCs standard distribution samples for environmental chamber performance evaluation |
| CN209559602U (en) * | 2019-01-22 | 2019-10-29 | 南通东昌环保设备科技有限公司 | A kind of gaseous state SVOCs standard sample preparation facilities |
Non-Patent Citations (1)
| Title |
|---|
| 吴晓彤 等: "《现代食品的安全问题及安全检测技术研究》", 中国原子能出版社, pages: 122 - 126 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU628343B2 (en) | Quantitative carbon dioxide detector | |
| JP6994216B2 (en) | Moisture vapor transmission rate and mass change measuring device and its measuring method | |
| CN111801576B (en) | Sensor arrangement with pressure sensor and thermal sensor | |
| BR112012021866A2 (en) | flow regulation system to maintain a stable gas flow, groupings of flow regulation system method to measure a flow with the use of a flow regulation system | |
| CN103499672A (en) | Method and device for optionally adjusting radon exhalation rate and effective decay constants | |
| CN209559602U (en) | A kind of gaseous state SVOCs standard sample preparation facilities | |
| CN209014432U (en) | A kind of compensation ventilation rate master bar calibrating installation | |
| CN108970429A (en) | A kind of air distributing device and air distributing method of low concentration calibrating gas | |
| CN104897663A (en) | Thin film sensor for detecting carbon dioxide and application of thin film sensor | |
| US11782007B2 (en) | CO2 sensor based on carbon nanotube-functional polymer composite films | |
| CN111965083A (en) | Particulate matter calibration system | |
| CN109752227A (en) | A kind of gaseous state SVOCs standard sample preparation facilities and preparation method thereof | |
| CN208799973U (en) | A kind of air distributing device of low concentration calibrating gas | |
| Liu et al. | Size distribution measurement of airborne coal dust by optical particle counters | |
| CN206960173U (en) | A kind of airborne particulate harvester | |
| US7604006B2 (en) | Control unit for flow regulation | |
| CN208140531U (en) | A kind of construction material and its product water vapo(u)r transmission energy test device | |
| KR20020043569A (en) | Apparatus and method for generating moisture standards in gases | |
| JP3291691B2 (en) | Pore size distribution measuring device | |
| Huang | A new test method for determining water vapor transport properties of polymer membranes | |
| Lin et al. | Application of chemical vapor generation systems to deliver constant gas concentrations for in vitro exposure to volatile organic compounds | |
| JP2005515882A (en) | Method and apparatus for mixing gases | |
| GÖTHE et al. | A simple method of estimating air recirculation in ventilation systems | |
| US7383742B2 (en) | Septum leak detector | |
| Hogan et al. | A portable aerosol detector of high sensitivity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190514 |
|
| RJ01 | Rejection of invention patent application after publication |