CN106018026A - Air humidification device applied to determination of soil-air distribution coefficient of semi-volatile organic contaminants - Google Patents
Air humidification device applied to determination of soil-air distribution coefficient of semi-volatile organic contaminants Download PDFInfo
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- CN106018026A CN106018026A CN201610362221.2A CN201610362221A CN106018026A CN 106018026 A CN106018026 A CN 106018026A CN 201610362221 A CN201610362221 A CN 201610362221A CN 106018026 A CN106018026 A CN 106018026A
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- air
- soil
- humidification device
- volatile organic
- distribution coefficient
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
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- Immunology (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to an air humidification device applied to determination of the soil-air distribution coefficient of semi-volatile organic contaminants, and the air humidification device can be applied to the determination of the soil-air distribution coefficient of the semi-volatile organic contaminants. The air humidification device consists of an air inlet end, an air-liquid separation region and an air outlet end, wherein an annular glass protrusion is processed at the air inlet end, and an annular glass protrusion is processed at the air outlet end, so that combination of the air inlet end, the air outlet end and polytetrafluoroethylene tubes is tight, and the air impermeability of the combined place is strengthened; liquid filled in the air-liquid separation region is high-purity water or a saturated CaCl2 solution; in addition, a feeding tube with a glass plug is added to a spheric region, so that the distribution balance time is shortened, and frequent detaching of the air humidification device is also avoided. When the soil-air distribution coefficient of the semi-volatile organic contaminants is determined, the humidification manner of air can be simplified through the air humidification device disclosed by the invention, and the air humidification device has the characteristics of being quick, easy to operate and the like.
Description
Technical field
The present invention relates to a kind of air humidifying device in pollutant partition behavioral experiment field, particularly to damping device required when half volatile organic contaminant soil-edema caused by disorder of QI distribution coefficient is measured.
Background technology
When measuring the soil-edema caused by disorder of QI distribution coefficient of half volatile organic contaminant, need humidifying air in advance so that it is when by contaminated soil, soil is humidified, so that the relative humidity of soil (RH) reaches 100%.This is owing to pollutant adsorption process in soil is affected by temperature, the soil organism etc., as soil RH > 99%, under the effect of capillary force, water occupies space, significant portion of soil aperture, greatly reduce the pollutant absorption at air/water interface, and mineral surfaces is covered by hydrone completely, pollutant are made to there's almost no in the absorption of mineral/water termination.Therefore in slowly drained soil (RH=100%), the soil organism decides the adsorption capacity of overall soil.Soil RH remains at 100%, the soil of half volatile organic contaminant-edema caused by disorder of QI distribution coefficient in experiment is made only to be affected by soil organic matter content and temperature, thus ensureing to obtain reliability and the concordance of data, experimental result will not produce a series of consequence because of the change of soil moisture.
At present, in existing research, for more than under 0 DEG C of temperature conditions during the measurement of half volatile organic contaminant soil-edema caused by disorder of QI distribution coefficient, generally using allows air be humidified contaminated soil by the hermetic container equipped with high purity water, less than under 0 DEG C of temperature conditions, use and pass air through the quartz sand humidification contaminated soil covering Sorbet.Instrument that these humidification methods are not fixed or device, and there is techniques below problem:
(1) run out of when the water in container or the Sorbet in quartz sand, need to remove two end interfaces and could inject high purity water, or substitute the container of the soil equipped with band Sorbet, reaction is to carry out in constant temperature storage box, this will necessarily make the temperature inside the box produce great changes thus experiment is produced impact, it is thus desirable to the longest soil moisture equilibration time, temperature is made to reach measured value.So make experimental period be greatly increased, and the collimation of experiment also can be under some influence.
(2) under cryogenic, the quartz sand of band Sorbet substitutes and makes the most cumbersome.
(3) port of existing container such as fritted glass disk bubbler is all smooth glass surface, and so it is poor with the combination seal of polyfluortetraethylene pipe, easily leaks gas, causes experimental result inaccurate.
Summary of the invention
The invention aims to overcome the deficiency of existing air humidifying device, it is provided that the one air humidifier the most easily of equipment than before, it is possible to apply simultaneously to the mensuration of half volatile organic contaminant soil-edema caused by disorder of QI distribution coefficient under high temperature and cryogenic conditions.
Technical scheme:
A kind of air humidifying device being applied to half volatile organic contaminant soil-edema caused by disorder of QI distribution coefficient mensuration, it is made up of inlet end, gas-liquid separation zone and outlet side, inlet end and outlet side couple with polyfluortetraethylene pipe, and inlet end and outlet side are respectively machined with a ring-shaped glass projection.During connection, should be protruding by this ring-shaped glass more tight with the combination of polyfluortetraethylene pipe, solve the problem that air-tightness is bad, prevent gas leakage.
The spheric region of gas-liquid separation zone is additionally provided with the liquid-feeding tube of a band glass stopper, the required liquid of convenient interpolation, avoids the gas leakage that frequent unloading process is caused while shortening the partition equilibrium time.
The filled liquid in gas-liquid separation zone is high purity water (temperature >=0 DEG C) or saturated CaCl2Solution (temperature < 0 DEG C), can humidify when gas is by aqueous solution, make soil RH reach 100%；During this device is placed in constant temperature storage box, to guarantee the stability of temperature in experimentation.
The invention have the advantage that
(1) easy to operate: only need to extract rapidly glass stopper in device after solution consumption, inject required liquid wherein, it is to avoid repeatedly to dismantle damping device, decrease and test leakage step when damping device is installed.
(2) experimental period is shortened: avoid the device caused when removing and install container and be exposed to external environment overlong time, thus it is excessive with soil moisture change in causing storage box, the problem needing long-time equilibrium temperature, thus effectively shorten experimental period.
(3) seal is good: on the one hand the ring glass projection in inlet end and outlet side can strengthen seal when coupling with polyfluortetraethylene pipe；On the other hand the mouth of pipe and the glass stopper of liquid-feeding tube is frosted material, increases frictional force, has good sealability.
Accompanying drawing explanation
Fig. 1 is the structural representation that this experiment is novel.
1 inlet end；2 outlet sides；3 gas-liquid separation zones；4 high purity waters or saturated CaCl2 solution；5 glass stoppers；6 liquid-feeding tubes；7 ring glass are protruding；8 polyfluortetraethylene pipes；9 glass sand plates.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As it is shown in figure 1, the present invention is a kind of air humidifying device, it is made up of inlet end 1, gas-liquid separation zone 2 and outlet side 3.In order to the combination with polyfluortetraethylene pipe 8 is more tight, preventing the generation of gas leakage, inlet end 1 and outlet side 2 process ring glass projection 7.The filled liquid in gas-liquid separation zone 2 is high purity water when temperature>=0 DEG C,<is saturated CaCl when 0 DEG C in temperature2Solution 4.
Air is entered by inlet end 1, disperses through glass sand plate 9, discharges from outlet side 2, thus reach humidifying effect after being fully contacted with the solution 4 of gas-liquid separation zone 3.When solution 4 is exhausted, extract glass stopper 5, in liquid-feeding tube 6, add required solution, allow experiment recover and continue at short notice.
Claims (3)
1. it is applied to the air humidifying device that half volatile organic contaminant soil-edema caused by disorder of QI distribution coefficient measures, by air inlet
End, gas-liquid separation zone and outlet side composition；Inlet end and outlet side couple with polyfluortetraethylene pipe；Inlet end
A ring-shaped glass projection respectively it is machined with outlet side.
2. air humidifier as claimed in claim 1, it is characterised in that pacify in the spheric region of described gas-liquid separation zone
Liquid-feeding tube equipped with band glass stopper.
3. air humidifier as claimed in claim 1 or 2, it is characterised in that described gas-liquid separation zone humidifying air
It is high purity water when solution is more than temperature>=0 DEG C, is 0<to be saturated CaCl time more than DEG C in temperature2Solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610362221.2A CN106018026A (en) | 2016-05-26 | 2016-05-26 | Air humidification device applied to determination of soil-air distribution coefficient of semi-volatile organic contaminants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610362221.2A CN106018026A (en) | 2016-05-26 | 2016-05-26 | Air humidification device applied to determination of soil-air distribution coefficient of semi-volatile organic contaminants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106018026A true CN106018026A (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610362221.2A Withdrawn CN106018026A (en) | 2016-05-26 | 2016-05-26 | Air humidification device applied to determination of soil-air distribution coefficient of semi-volatile organic contaminants |
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| CN (1) | CN106018026A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917831A (en) * | 2017-12-27 | 2018-04-17 | 上海神开气体技术有限公司 | A kind of simple apparatus and method for preparing VOC gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0611325A4 (en) * | 1991-10-08 | 1994-11-17 | Us Environment | Method and apparatus for sampling air contaminants. |
| US5493923A (en) * | 1992-02-26 | 1996-02-27 | Gfa Gesellschaft Zur Arbeitsplatz-Und Umweltanalytik Mbh | Process and device for taking samples from waste gases |
| CN203259382U (en) * | 2013-06-06 | 2013-10-30 | 江苏省环境监测中心 | Efficient and large-scale multihole glass tube absorbing tube |
| CN103645128A (en) * | 2013-12-30 | 2014-03-19 | 中国科学院武汉岩土力学研究所 | Unsaturated rock-soil material stress permeability measuring instrument |
| CN105486552A (en) * | 2015-12-31 | 2016-04-13 | 河海大学 | Active in-situ acquisition system for lasting organic pollutants in soil air phase |
| CN205665071U (en) * | 2016-05-26 | 2016-10-26 | 大连理工大学 | Be applied to semi -volatile organic compounds soil air humidifying device of gas distribution coefficient survey |
-
2016
- 2016-05-26 CN CN201610362221.2A patent/CN106018026A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0611325A4 (en) * | 1991-10-08 | 1994-11-17 | Us Environment | Method and apparatus for sampling air contaminants. |
| US5493923A (en) * | 1992-02-26 | 1996-02-27 | Gfa Gesellschaft Zur Arbeitsplatz-Und Umweltanalytik Mbh | Process and device for taking samples from waste gases |
| CN203259382U (en) * | 2013-06-06 | 2013-10-30 | 江苏省环境监测中心 | Efficient and large-scale multihole glass tube absorbing tube |
| CN103645128A (en) * | 2013-12-30 | 2014-03-19 | 中国科学院武汉岩土力学研究所 | Unsaturated rock-soil material stress permeability measuring instrument |
| CN105486552A (en) * | 2015-12-31 | 2016-04-13 | 河海大学 | Active in-situ acquisition system for lasting organic pollutants in soil air phase |
| CN205665071U (en) * | 2016-05-26 | 2016-10-26 | 大连理工大学 | Be applied to semi -volatile organic compounds soil air humidifying device of gas distribution coefficient survey |
Non-Patent Citations (1)
| Title |
|---|
| MARTIN HIPPELEIN等: "Soil/Air Partitioning of Semivolatile Organic Compounds. 1. Method Development and Influence of Physical-Chemical Properties", 《ENVIRON. SCI. TECHNOL.》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917831A (en) * | 2017-12-27 | 2018-04-17 | 上海神开气体技术有限公司 | A kind of simple apparatus and method for preparing VOC gas |
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Application publication date: 20161012 |
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