CN209745645U - A measuring device that is used for advancing appearance processing apparatus of snow ice sample and contains it - Google Patents
A measuring device that is used for advancing appearance processing apparatus of snow ice sample and contains it Download PDFInfo
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- CN209745645U CN209745645U CN201920222167.0U CN201920222167U CN209745645U CN 209745645 U CN209745645 U CN 209745645U CN 201920222167 U CN201920222167 U CN 201920222167U CN 209745645 U CN209745645 U CN 209745645U
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Abstract
The utility model provides a advance kind processing apparatus for snow ice sample, including the vacuum pump, three way component, movable adapter, quartzy freeze-drying container, compressed air source, accumulative flowmeter and flexible sampling bag, vacuum pump and compressed air source pass through three way component and are connected with movable adapter, wherein the one end that movable adapter is close to vacuum pump and compressed air source is equipped with first valve, be connected with accumulative flowmeter on compressed air source's the gas circuit and be used for measuring the air mass flow of compressed air source output, the quartzy freeze-drying container of swing joint connection, the one end that movable joint was kept away from to quartzy freeze-drying container is equipped with the second valve, quartzy freeze-drying container is connected to flexible sampling. The sample introduction processing device is connected to the single-particle black carbon photometer to form a snow ice sample measuring device to detect a sample, so that the original form of black carbon in snow ice can be reserved, and the concentration and the mixed state proportion of the black carbon can be more accurately measured.
Description
Technical Field
The utility model relates to a measuring device of granule among the snow ice sample especially relates to a sampling processing apparatus that is arranged in black carbon concentration and mixed state proportion measurement of ice and snow sample.
Background
Atmospheric aerosols are a generic term for solid and liquid particles suspended in the atmosphere, are very light enough to be suspended in air, and currently consist mainly of 6 major classes of 7 aerosol particles, namely: dust aerosols, carbon aerosols (black carbon and organic carbon aerosols), sulfate aerosols, nitrate aerosols, ammonium aerosols, and sea salt aerosols. Among them, black carbon is a common component in atmospheric aerosol, is a product of incomplete combustion of a carbon-containing substance, generally accounts for about 20% of the mass concentration of the atmospheric aerosol, and has important significance in the fields of atmospheric radiation, climate, cloud physics, environmental science, toxicology and the like due to its special properties, so that the research on the black carbon aerosol draws great attention from scientists. Black carbon in the atmosphere is the next warming component of the atmosphere to carbon dioxide and plays a major role in regional climate change. On one hand, the black carbon particles can strongly absorb solar radiation including infrared and visible light bands, and heat the ambient air so as to have a warming effect on the atmosphere; on the other hand, the black carbon particles are settled on the surfaces of glaciers and snow cover, the albedo of the surfaces of the glaciers and the snow cover is obviously reduced, and ablation of the glaciers and the snow cover is accelerated, so that the regional climate environment is influenced.
Studies have shown that a significant fraction of aerosol particles in the atmosphere are not in the form of single particles, and that black carbon particles may exist in a mixture with other particles, such as sulfate particles, as a number of ingredients. The mixed black carbon and the mixed form thereof directly influence the optical properties of the particles, such as light absorption, scattering and the like. The aerosol particles in the atmosphere are linked to the freezing circle of the plateau by atmospheric transport, and therefore, the black carbon particles in the snow ice in the plateau region also contain black carbon in a mixed state.
The method for detecting the black carbon aerosol in the snow ice is developed from the method for detecting the atmospheric black carbon aerosol. The traditional thermo-optical method analyzer has great limitation on the application of snow ice samples, and has the defects of large sample consumption, more interference, complex pretreatment and the like. The single-particle black carbon photometer proposed by U.S. DMT company in 2003 is a novel high-sensitivity black carbon testing instrument, can directly measure a melted snow ice sample, has great advantages in the analysis of the black carbon of the snow ice sample, and is one of the main instruments internationally used for measuring the black carbon in the snow ice at present. The basic principle of the single-particle black carbon photometer is that aerosol particles are heated by continuous high-energy laser beams, laser-induced combustion is generated after the aerosol particles absorb heat, incandescent light is emitted, the quantity, the mass concentration and the mixing state of black carbon are measured by analyzing scattering signals and incandescent light signals of the aerosol particles, and the measured particle size range contains most of the black carbon particles. The core component of the single particle black carbon photometer is a neodymium-doped yttrium aluminum garnet laser, if the aerosol particles are pure scattering particles (such as sulfate particles and the like), the laser light is not absorbed generally, only scattering occurs, and therefore a single scattering signal is presented in the spectrogram. If the aerosol particles are black carbon particles, they absorb the laser energy, burn instantaneously, and emit incandescent light, so that an asymmetric scattered signal and a superimposed incandescent light signal can be seen, while the ratio of the broadband and narrowband incandescent light detector signals is used to further determine whether the incandescent light signal is from black carbon. If the particles exist as a mixture of scattering particles and black carbon, it usually takes a relatively longer time than pure black carbon particles to absorb the laser energy, producing an incandescent light signal, so that the delay time can be used to distinguish the mixed aerosol particles. However, the single-particle black carbon photometer is used for detecting black carbon in atmospheric aerosol, and before detecting a snow ice sample, the sample needs to be melted, that is, the melted snow ice sample is detected, and the melted sample is atomized and then enters a desolventizing device to remove water vapor, and then is converted into aerosol for measurement. Researches show that the processes of melting, atomizing and the like of a snow ice solid sample before sample introduction can greatly influence the measurement of the black carbon and even destroy the original occurrence state of the black carbon particles. Particularly, for particles existing in a mixed state of black carbon and other components such as sulfate, the original state of the black carbon in the solid sample of the snow ice can be seriously damaged in the processes of melting, atomizing and the like, so that the measurement result is seriously distorted, and finally the actual action effect of the black carbon in the snow ice cannot be accurately evaluated.
Therefore, a sample introduction processing method and a sample introduction processing device which do not affect the black carbon are urgently needed, the original occurrence state of the black carbon particles is prevented from being damaged in the processes of melting, atomizing and the like, the accurate determination of the concentration and the mixed state proportion of the black carbon in the snow ice is realized, and the possibility is provided for further and accurately evaluating the climatic environment significance of the black carbon of the snow ice.
SUMMERY OF THE UTILITY MODEL
The utility model provides an accurate determination method of black carbon concentration and mixed state proportion in snow ice, this method adopt advance kind processing method and device that do not exert an influence to black carbon, and then realize the accurate determination of black carbon concentration and mixed state proportion in the snow ice.
In order to solve the technical problem, the utility model adopts the following technical scheme that the sample introduction processing device for measuring the black carbon concentration and the mixed state proportion in the snow ice sample is characterized in that the device comprises a vacuum pump, a three-way element, a movable adapter, a quartz freeze-drying container, a compressed air source, an accumulation flowmeter and a flexible sampling bag, the vacuum pump and a compressed air source air circuit are connected with the movable adapter through the three-way element, wherein one end of the movable adapter, which is close to the vacuum pump and the compressed air source, is provided with a first valve, the air circuit of the compressed air source is connected with the accumulation flowmeter for measuring the air flow output by the compressed air source, the movable adapter is connected with the quartz freeze-drying container, one end of the quartz freeze-drying container, which is far away from the movable adapter, is provided with; in the snow ice freeze-drying process, the three-way element conducts a passage between the vacuum pump and the quartz freeze-drying container, the first valve is opened, the second valve is closed, after freeze-drying is completed, the first valve is closed, and the three-way element is closed; in the snow ice blowing process, the tee joint element conducts a gas path between a compressed air source and the quartz freeze-drying container, the first valve is opened, and the second valve is opened after particles are fully suspended.
Furthermore, in order to prevent other substances from adhering to the flexible sampling bag, the flexible sampling bag is made of an antistatic material.
On the basis of a sample introduction processing device for measuring the concentration of black carbon and the mixed state proportion in the snow ice sample, the concentration of the black carbon and the mixed state proportion in the snow ice can be accurately measured, and the corresponding devices are as follows: and (3) connecting the sample introduction processing device for measuring the concentration and the mixed state proportion of the black carbon in the snow ice sample to a single-particle black carbon photometer.
Drawings
FIG. 1 is a schematic view of a sample injection processing device for measuring the concentration of black carbon and the proportion of a mixed state in a snow ice sample. 1. A vacuum pump; 2. a valve; 3. a movable adapter; 4. a quartz freeze-drying container; 5. an ice core sample; 6. freezing environment; 7. a valve; 8. a cumulative flow meter; 9. aerosol; 10. a flexible sampling bag; 11. a tee element. The arrows in the figure indicate the direction of the compressed air source.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments to explain the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the sampling processing apparatus for measuring the concentration of black carbon and the proportion of a mixed state in a snow ice sample comprises a vacuum pump 1, a three-way element 11, a movable adapter 3, a quartz freeze-drying container 4, a compressed air source (not shown), an accumulation flowmeter 8 and a flexible sampling bag 10, wherein the vacuum pump 1 and a compressed air source air passage are both connected with the movable adapter 3 through the three-way element 11, one end of the movable adapter 3, which is close to the vacuum pump 1 and the compressed air source, is provided with a first valve 2, the air passage of the compressed air source is connected with the accumulation flowmeter 8 for measuring the air flow output by the compressed air source, the movable adapter 3 is connected with the quartz freeze-drying container 4, one end of the quartz freeze-drying container 4, which is far away from the movable adapter 3, is provided with; in the process of freeze-drying the snow ice, the three-way element 11 conducts a passage between the vacuum pump 1 and the quartz freeze-drying container 4, the first valve 2 is opened, the second valve 7 is closed, after freeze-drying is finished, the first valve 2 is closed, and the three-way element 11 is closed; in the process of blowing the snow ice, the three-way element 11 conducts a gas path between a compressed air source and the quartz freeze-drying container 4, opens the first valve 2, and opens the second valve 7 after the particles are fully suspended.
When the sample injection treatment is carried out, the method comprises the following steps: cutting the ice core drilled in the field at intervals of 1cm, taking a part of the ice core with the size of 1cm multiplied by 1cm as an ice sample 5 for preventing pollution, weighing and recording the mass M of the ice sample 5; freeze-drying process of ice sample 5: placing an ice sample 5 into a quartz freeze-drying container 4 through a movable adapter 3, placing the container in a low-temperature environment of-20 ℃ to-10 ℃, enabling a three-way element 11 to conduct a passage between a vacuum pump 1 and the quartz freeze-drying container 4, opening a first valve 2, closing a second valve 7, vacuum freeze-drying the ice sample 5, and closing the first valve 2 and the three-way element 11 after freeze-drying is completed; purging process of ice sample 5: the tee-joint element 11 is communicated with a gas path between a compressed air source and the quartz freeze-drying container 4, the first valve 2 is opened, the particles are fully suspended by high-flow gas, then the second valve 7 is opened, the particles are blown into the flexible sampling bag 10 by low-flow gas, and the total volume V of the blown gas is recorded by the accumulation flowmeter 8 in the process of blowing the ice sample 5 by compressed air.
The sampling processing device for measuring the black carbon concentration and the mixed state proportion in the snow ice sample is connected with the single-particle black carbon photometer, so that the measurement of the black carbon concentration and the mixed state proportion in the snow ice sample can be completed, and the flexible sampling bag 10 of the sampling processing device is connected into the single-particle black carbon photometer when the two are connected.
The method for measuring the black carbon concentration and the mixed state proportion in the snow ice sample is to continue to carry out the following steps after sample injection treatment for measuring the black carbon concentration and the mixed state proportion in the snow ice sample is finished: opening the other end opening of the flexible sampling bag 10, and accessing the opening to a single-particle black carbon photometer for testing; and (4) calculating a result: the mixed state black carbon is directly resolved by the delay time of a spectrum peak on an instrument, the mixed state proportion of the mixed state black carbon is determined, and the concentration of the black carbon in the snow ice is calculated by the formula X ═ C V)/M, wherein: the concentration of black carbon in the X-snow ice sample was given in nanograms per gram (ng g-1), the concentration of black carbon in the aerosol given on the C-single particle black carbon photometer was given in nanograms per milliliter (ng mL-1), the total volume of purge gas recorded by the V-cumulative flow meter was given in milliliters (mL), and the M-mass of the ice core sample was measured in grams (g).
Wherein for avoiding the absorption of particulate matter, the flexible sampling bag adopts antistatic material.
In addition, in the ice sample blowing process, the test time is carefully controlled, and the problem that the instrument is polluted due to the change of the sample flow rate after the sample is used up is avoided.
The present invention has been described in detail with reference to the specific and preferred embodiments, but it should be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and any modifications, equivalents and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (3)
1. A sample introduction processing device for a snow ice sample is characterized by comprising a vacuum pump (1), a three-way element (11), a movable adapter (3), a quartz freeze-drying container (4), a compressed air source, an accumulation flowmeter (8) and a flexible sampling bag (10), wherein the vacuum pump (1) and a compressed air source air passage are connected with the movable adapter (3) through the three-way element (11), wherein the one end that activity adapter (3) are close to vacuum pump (1) and compressed air source is equipped with first valve (2), be connected with accumulation flowmeter (8) on compressed air source's the gas circuit and be used for measuring the air mass flow of compressed air source output, quartzy freeze-drying container (4) is connected in activity adapter (3), the one end that activity adapter (3) were kept away from in quartzy freeze-drying container (4) is equipped with second valve (7), quartzy freeze-drying container (4) are connected to flexible sampling bag (10) through second valve (7).
2. The sample introduction and treatment device for the snow ice sample according to claim 1, wherein the flexible sampling bag (10) is made of an antistatic material.
3. A snow ice sample measuring device is characterized in that: comprising the sample processing device for the snow ice sample and the single-particle black carbon photometer as set forth in claim 1, wherein the flexible sampling bag (10) of the sample processing device is connected to the single-particle black carbon photometer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920222167.0U CN209745645U (en) | 2019-02-22 | 2019-02-22 | A measuring device that is used for advancing appearance processing apparatus of snow ice sample and contains it |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920222167.0U CN209745645U (en) | 2019-02-22 | 2019-02-22 | A measuring device that is used for advancing appearance processing apparatus of snow ice sample and contains it |
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| CN209745645U true CN209745645U (en) | 2019-12-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632593A (en) * | 2019-02-22 | 2019-04-16 | 中国科学院青藏高原研究所 | Black concentration of carbon and mixed state ratiometric method in a kind of snow and ice |
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2019
- 2019-02-22 CN CN201920222167.0U patent/CN209745645U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632593A (en) * | 2019-02-22 | 2019-04-16 | 中国科学院青藏高原研究所 | Black concentration of carbon and mixed state ratiometric method in a kind of snow and ice |
| CN109632593B (en) * | 2019-02-22 | 2021-01-29 | 中国科学院青藏高原研究所 | Method for measuring concentration and mixed state proportion of black carbon in snow ice sample |
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Granted publication date: 20191206 |