CN217277191U - Novel gaseous sample of groundwater solution gas device - Google Patents
Novel gaseous sample of groundwater solution gas device Download PDFInfo
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- CN217277191U CN217277191U CN202220198607.5U CN202220198607U CN217277191U CN 217277191 U CN217277191 U CN 217277191U CN 202220198607 U CN202220198607 U CN 202220198607U CN 217277191 U CN217277191 U CN 217277191U
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Abstract
The utility model relates to the field of earthquake observation sample treatment devices, and discloses a novel underground water dissolved gas sampling device, which comprises a sampling bottle, wherein a first sealing plug is arranged at the bottle mouth of the sampling bottle, and a first communicating pipe, a second communicating pipe and a third communicating pipe are arranged on the first sealing plug in a penetrating way; the upper end of the first communication pipe is provided with a first water stop clamp, the lower end of the first communication pipe is flush with the lower surface of the first sealing plug, the first communication pipe is detachably connected with a diffusion pipe, and the diffusion pipe is used for measuring the volume of dissolved gas; the upper end of the second communicating pipe is provided with a second water stop clamp, the upper end of the second communicating pipe is detachably connected with a first air extractor or an air blower, the lower end of the second communicating pipe is connected with a bladder, and the bladder is arranged in the sampling bottle; the upper end of the third communicating pipe is provided with a third water stop clamp, and the lower end of the third communicating pipe is close to the bottom of the sampling bottle. The utility model discloses can be quick separate dissolved gas from groundwater, and the gaseous volume of measurement dissolved gas that can be accurate.
Description
Technical Field
The utility model relates to a seismic survey sample treatment device field especially relates to a novel gaseous sampling device of groundwater solution gas.
Background
The air ring of the earth crust contains various gases which exist in various forms, namely free gas, adsorbed gas and dissolved gas on the surface and in the gaps of rock-soil particles, and also exist in rock solids in the form of inclusion bodies. Because the gas has strong permeability and mobility, when the crustal rock is deformed and damaged by force and causes gas migration in the process of earthquake inoculation and generation, and the occurrence form of the gas is changed due to the change of the environmental temperature and pressure in the aquifer, the gas component and the concentration thereof in the aquifer, and the component and the concentration of free gas (free gas) in soil gaps can be abnormally changed. Thus, many scholars consider that gas composition and its concentration observations are likely to be the most shock sensitive measures.
The method is a necessary condition for guaranteeing the gas observation quality by collecting real, reliable and representative samples and avoiding the interference of natural and artificial factors in the sample pretreatment process.
Patent No. CN206235495U discloses a system for sampling gas from underground water dissolved gas, which comprises a gas separation device, a gas injector and a gas collection device. The gas separation device comprises a sampling bottle, and a vacuum pump and a gas blowing bag which are connected with the sampling bottle. The bottle mouth of the sampling bottle is provided with a sealing bottle plug with three through holes, a first pipe, a second pipe and a third pipe are respectively arranged in the three through holes, the lower end of the first pipe is connected with a collapsible bladder, the upper end of the first pipe is respectively connected with a vacuum pump and an air blowing bag, and a first water stop clamp and a fourth water stop clamp are respectively arranged on the connecting end of the first pipe, which is connected with the vacuum pump and the air blowing bag; the lower end of the second tube is close to the top of the sampling bottle, and the upper end of the second tube is provided with a second water stop clamp; the lower end of the third tube is close to the bottom of the sampling bottle, and the upper end of the third tube is provided with a third water stop clamp. The utility model discloses an utilize the principle of negative pressure degasification, separate solution gas in the groundwater ingeniously. However, the utility model still has the following problems: the gas extraction process needs repeated air blowing and air extraction, and is complicated and inconvenient to use; the volume of the dissolved gas in the underground water cannot be rapidly and conveniently determined.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the above circumstances not enough and provide a novel gaseous sampling of groundwater solution gas device to solve at least one technical problem who mentions in the background art.
In order to achieve the above purpose, the technical scheme of the utility model is that: a novel groundwater dissolved gas sampling device comprises a sampling bottle, wherein a first sealing plug is arranged at the bottle mouth of the sampling bottle, and a first communicating pipe, a second communicating pipe and a third communicating pipe are arranged in a penetrating manner on the first sealing plug;
a first water stop clamp is arranged at the upper end of the first communication pipe, the lower end of the first communication pipe is flush with the lower surface of the first sealing plug, the first communication pipe is detachably connected with a diffusion pipe, and the diffusion pipe is used for measuring the volume of dissolved gas;
a second water stop clamp is arranged at the upper end of the second communicating pipe, a first air exhaust device or an air blowing device is detachably connected to the upper end of the second communicating pipe, a bladder is connected to the lower end of the second communicating pipe, and the bladder is arranged in the sampling bottle;
and a third water stop clamp is arranged at the upper end of the third communicating pipe, and the lower end of the third communicating pipe is close to the bottom of the sampling bottle.
Further, the first air extractor is a first vacuum pump, and the air blowing device is a double-connected ball or an air blowing pump.
Further, the diffusion tube lower extreme has the level bottle through fourth communicating pipe intercommunication, saturated solution has been held in the level bottle, the diffusion tube surface is provided with the scale mark, the diffusion tube upper end is provided with the second sealing plug, second sealing plug upper end is provided with rotary switch, rotary switch includes knob, first joint and fifth communicating pipe, fifth communicating pipe run through the second sealing plug and with the inside intercommunication of diffusion tube, make through rotating the knob fifth communicating pipe selectively with first joint intercommunication or cut off, first joint can be dismantled with the upper end of first communicating pipe and be connected.
Further, the saturated solution is a saturated sodium chloride solution.
Furthermore, the rotary switch further comprises a second joint, the second joint is selectively communicated with or separated from the fifth communicating pipe by rotating a knob, and the second joint is used for leading out the dissolved gas.
Further, the second connector is communicated with a sixth communicating pipe, and the sixth communicating pipe is detachably connected with a second air exhaust device.
Further, the second air extractor comprises a second vacuum pump and an intermediate bottle, the intermediate bottle is provided with a third sealing plug, the third sealing plug is provided with a seventh communicating pipe and an eighth communicating pipe in a penetrating mode, one end, far away from the intermediate bottle, of the seventh communicating pipe is communicated with the second vacuum pump, and one end, far away from the intermediate bottle, of the eighth communicating pipe is detachably connected with one end, far away from the knob, of the sixth communicating pipe.
Further, the height of the lower end of the seventh communication pipe is higher than that of the lower end of the eighth communication pipe.
Furthermore, one end, far away from the knob, of the sixth communicating pipe is detachably connected with an injector, and the injector is used for transferring the dissolved gas.
Compared with the prior art, the utility model at least has following advantage: the utility model discloses utilize the principle of negative pressure degasification, only need once blow and bleed behind the extraction water sample, make the gaseous furthest's of solution gas effusion through adopting oscillatory mode, the simple operation will dissolve gaseous leading-in diffusion tube of gas, the gaseous volume of solution gas in survey the groundwater that can be quick accurate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic view of the sampling bottle of the present invention;
FIG. 2 is a schematic diagram of the structure of the process for measuring the volume of the solution gas according to the present invention;
FIG. 3 is a schematic structural view of a vacuum pumping process of a fifth communicating pipe of the present invention;
FIG. 4 is a schematic view of the structure of the process of the solution gas in the transfer diffusion tube of the present invention;
reference numerals: 1. sampling a bottle; 2. a diffuser tube; 3. a level vial; 4. a second vacuum pump; 5. a middle bottle; 6. an injector; 7. ground water; 11. a first sealing plug; 12. a first communication pipe; 13. a second communicating pipe; 14. a third communicating pipe; 15. a first water stop clip; 16. a second water stop clip; 17. a third water stop clip; 18. a bladder; 19. a double-connected ball; 21. a second sealing plug; 22. a knob; 23. a first joint; 24. a second joint; 25. a fourth communicating pipe; 26. a fifth communicating pipe; 27. a sixth communicating pipe; 28. a fourth water stop clip; 31. saturated sodium chloride solution; 51. a third sealing plug; 52. a seventh communicating pipe; 53. and an eighth communication pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the following detailed description.
Referring to fig. 1, the utility model provides a novel groundwater dissolved gas sampling device, which comprises a sampling bottle 1, wherein the sampling bottle 1 is used for containing groundwater 7 during operation, a first sealing plug 11 is arranged at the bottleneck of the sampling bottle 1, and a first communicating pipe 12, a second communicating pipe 13 and a third communicating pipe 14 vertically run through the first sealing plug 11;
the upper end of the first communicating pipe 12 is provided with a first water stop clamp 15, the first water stop clamp 15 can close or open the first communicating pipe 12, the lower end of the first communicating pipe 12 is flush with the lower surface of the first sealing plug 11, the first communicating pipe 12 is used for discharging underground water 7 or dissolved gas in the sampling bottle 1, the first communicating pipe 12 is detachably connected with a diffusion pipe 2, the dissolved gas can enter the diffusion pipe 2 through the first communicating pipe 12, and the diffusion pipe 2 can measure the volume of the dissolved gas;
a second water stop clamp 16 is arranged at the upper end of the second communicating pipe 13, the second water stop clamp 16 can close or open the second communicating pipe 13, the upper end of the second communicating pipe 13 is detachably connected with a first air extractor or an air blowing device, the first air extractor can select a first vacuum pump (not shown in the figure), the air blowing device can select a double-connection ball 19 or an air blowing pump (not shown in the figure), the lower end of the second communicating pipe 13 is connected with a bladder 18, the bladder 18 is arranged in the sampling bottle 1, the bladder 18 can be vacuumized through the first air extractor, and the volume of the bladder 18 can be expanded through the air blowing device;
the upper end of the third communicating pipe 14 is provided with a third water stop clamp 17, the third communicating pipe 14 can be closed or opened by the third water stop clamp 17, the lower end of the third communicating pipe 14 is close to the bottom of the sampling bottle 1, the upper end of the third communicating pipe 14 is detachably connected with a tap pipe (not shown in the figure), and the groundwater 7 can enter the sampling bottle 1 through the third communicating pipe 14.
Preferably, referring to fig. 2-3, the diffusion tube 2 is a hollow tube with openings at its upper and lower ends, the lower end of the diffusion tube 2 is communicated with the leveling bottle 3 through a fourth communication tube 25, the leveling bottle 3 contains a saturated solution, the saturated solution can be a saturated sodium chloride solution 31, the saturated sodium chloride solution 31 is a non-soluble gas, and the dissolved gas can be introduced into the diffusion tube 2 by using a drainage method and the volume of the dissolved gas can be measured. It should be noted that the level vial 3 and the diffusion tube 2 form a communicating vessel through the fourth communicating tube 25, and the saturated sodium chloride solution 31 flows between the diffusion tube 2, the level vial 3, and the fourth communicating tube 25. The surface of the diffusion tube 2 is provided with scale marks for accurately measuring the volume of the dissolved gas. The upper end of the diffusion pipe 2 is provided with a second sealing plug 21, the upper end of the second sealing plug 21 is provided with a rotary switch, the rotary switch comprises a knob 22, a first joint 23 and a fifth communicating pipe 26, the fifth communicating pipe 26 penetrates through the second sealing plug 21 along the vertical direction and is communicated with the inside of the diffusion pipe 2, the fifth communicating pipe 26 is selectively communicated with or separated from the first joint 23 by rotating the knob 22, and the first joint 23 is detachably connected with the upper end of the first communicating pipe 12.
When the gas level is used, the height of the level bottle 3 is reduced by moving the level bottle 3 downwards, so that the pressure in the diffusion pipe 2 can be reduced, and the dissolved gas enters the diffusion pipe 2 through the first communicating pipe 12, the first joint 23 and the fifth communicating pipe 26 under the action of atmospheric pressure.
Preferably, the rotary switch further comprises a second connector 24, the second connector 24 is selectively communicated with or separated from the fifth communicating pipe 26 by rotating the knob 22, and the second connector 24 is used for leading out the solution gas.
It should be understood that the first connector 23 and the second connector 24 can be interchanged, and the first connector 23 and the second connector 24 can be the same connector, and are not limited to the above-described embodiments.
The second joint 24 is connected to a sixth communication pipe 27, and the sixth communication pipe 27 is used for guiding out the dissolved gas in the diffusion pipe 2. Before the dissolved gas is led out, the sixth communication pipe 27 needs to be vacuumized, at this time, one end of the sixth communication pipe 27 far away from the knob 22 needs to be connected to the second air extractor, and the knob 22 is rotated to separate the fifth communication pipe 26 between the second joints 24, so that the gas and/or liquid in the sixth communication pipe 27 can be vacuumized.
Specifically, referring to fig. 3, the sixth communication pipe 27 is detachably connected to a second air pumping device, the second air pumping device includes a second vacuum pump 4 and an intermediate bottle 5, the intermediate bottle 5 is provided with a third sealing plug 51, the third sealing plug 51 is provided with a seventh communication pipe 52 and an eighth communication pipe 53 in a penetrating manner, one end of the seventh communication pipe 52 far away from the intermediate bottle 5 is communicated with the second vacuum pump 4, and one end of the eighth communication pipe 53 far away from the intermediate bottle 5 is detachably connected to one end of the fifth communication pipe 26 far away from the rotary switch. When using the vacuum pump to bleed, in the moisture that carries can enter into the vacuum pump along with gas in, long-term accumulation leads to the vacuum pump to damage, the unable normal operating of device. This kind of design can realize dissolving the water-gas separation of gas sampling in-process, guarantees that second vacuum pump 4 can no longer inhale a large amount of moisture to guarantee whole sampling device's normal operating, and then improve second vacuum pump 4's life.
To further avoid drawing moisture into the second vacuum pump 4, the height of the lower end of the seventh communication pipe 52 is higher than the height of the lower end of the eighth communication pipe 53.
Referring to fig. 4, the end of the sixth communication pipe 27 remote from the knob 22 is detachably connected to the injector 6, and the knob 22 is rotated to communicate the second connector 24 with the fifth communication pipe 26, so that the solution gas can be discharged through the injector 6.
It should be noted that, in the present invention, the first communicating pipe 12, the second communicating pipe 13, the third communicating pipe 14, the seventh communicating pipe 52 and the eighth communicating pipe 53 select a mode of combining a glass tube and a rubber tube, the first water-stopping clamp 15, the second water-stopping clamp 16 and the third water-stopping clamp 17 are respectively clamped on the rubber tube, the first water-stopping clamp 15, the second water-stopping clamp 16 and the third water-stopping clamp 17 are opened to be detached from the rubber tube, the first water-stopping clamp 15, the second water-stopping clamp 16 and the third water-stopping clamp 17 are closed to be installed on the rubber tube, the fourth communicating pipe 25 and the sixth communicating pipe 27 are rubber tubes, and the fifth communicating pipe 26 is a glass tube, which belongs to the prior art and is not described herein again.
The utility model discloses a use and principle as follows:
a water sample collection process:
referring to fig. 1, a bladder 18 in a sampling bottle 1 is vacuumized by a first vacuum pump, the groundwater flow is adjusted to be 1.2L/min, the upper end of a third communicating pipe 14 is connected with a faucet, a first water stop clamp 15 and a third water stop clamp 17 are opened, groundwater 7 flows into the sampling bottle 1, air in the sampling bottle 1 is discharged through the first communicating pipe 12, it is guaranteed that the sampling bottle 1 is filled with groundwater 7 and no air remains at the bottle mouth, and the first water stop clamp 15 and the third water stop clamp 17 are closed in sequence for degassing.
Degassing:
continuing to refer to fig. 1, after the water sample collection is completed, installing a double connecting ball 19 on the second communicating pipe 13, opening the first water stop clamp 15 and the second water stop clamp 16, slowly blowing gas into the bladder 18 by using the double connecting ball 19, slowly discharging the groundwater 7 in the sampling bottle 1 through the first communicating pipe 12, measuring the volume of the discharged groundwater 7 by using a measuring cylinder (not shown in the figure), when the volume of the groundwater 7 reaches a selected value, immediately closing the first water stop clamp 15 and the second water stop clamp 16, and detaching the double connecting ball 19 from the second communicating pipe 13, wherein the expansion volume of the bladder 18 is smaller than the maximum expansion volume.
Connecting the second communicating pipe 13 with a first vacuum pump, opening the second water-stop clamp 16, vacuumizing the bladder 18 by using the first vacuum pump, closing the second water-stop clamp 16 after the vacuumizing is finished, detaching the first vacuum pump from the second communicating pipe 13, immediately placing the sampling bottle 1 on an oscillator for oscillation for 2 minutes, wherein the oscillator can be a Kangshi oscillator, and dissolved gas dissolved in water can be maximally escaped by the oscillation.
Referring to fig. 2, a saturated sodium chloride solution 31 is contained in the level bottle 3, the level bottle 3 is communicated with the lower end of the diffusion tube 2, the knob 22 is twisted, the first joint 23 is communicated with the fifth communicating tube 26, the air in the diffusion tube 2 is discharged by lifting the level bottle 3 by using the communicating tube principle, and the knob 22 is twisted and closed after the air in the diffusion tube 2 is completely discharged.
The first communication pipe 12 of the sampling bottle 1 is communicated with the first joint 23 on the left side of the diffusion tube 2, the leveling bottle 3 is moved downwards and is placed below the lowest end of the diffusion tube 2, and the pressure in the diffusion tube 2 is reduced by moving the leveling bottle 3 downwards. The fifth communicating pipe 26 is communicated with the first joint 23 by turning the knob 22, the second water stop clip 16 is slowly opened after the first water stop clip 15 is opened, the bladder 18 is expanded under the action of the atmospheric pressure, the dissolved gas is pressed into the diffusion tube 2, and the knob 22 is turned to keep the closed state after the transfer is finished. When the liquid level of the level bottle 3 is the same as the liquid level of the diffusion tube 2 by moving the level bottle 3 upwards, the volume displayed by the diffusion tube 2 is the volume of the dissolved gas. The leveling bottle 3 is moved upwards continuously, so that the liquid level of the leveling bottle 3 is higher than the upper end of the diffusion pipe 2.
Referring to fig. 3, the second pumping means is assembled to connect the second vacuum pump 4 and the intermediate flask 5, respectively, the second joint 24 on the right side of the diffuser 2 is connected to the sixth communication pipe 27, the sixth communication pipe 27 is communicated with the seventh communication pipe 52, and the second vacuum pump 4 is turned on to pump the sixth communication pipe 27.
Referring to fig. 4, a fourth water stop clip 28 is installed at the end of the sixth communication pipe 27, the sixth communication pipe 27 is closed by the fourth water stop clip 28 to prevent the external air from entering the sixth communication pipe 27, the second connector 24 is communicated with the fourth communication pipe 25 by turning the knob 22, the sixth communication pipe 27 is penetrated by the needle of the syringe 6, the dissolved gas is sucked by the syringe 6, and then the dissolved gas is injected into a gas observation instrument (not shown) to perform gas observation. In the present experiment, the dissolved gas sucked by the syringe at each time is a partially dissolved gas, but not a completely dissolved gas, and the gas is extracted a plurality of times and observed a plurality of times. The syringe 6 leaves a pinhole on the surface of the sixth communication pipe 27 after sucking the dissolved gas each time, and since the liquid level of the leveling bottle 3 is higher than the upper end of the diffusion pipe 2, the external air can be prevented from entering the sixth communication pipe 27 and/or the diffusion pipe 2 under the action of the atmospheric pressure.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (9)
1. A novel groundwater dissolved gas sampling device is characterized by comprising a sampling bottle (1), wherein a first sealing plug (11) is arranged at the bottle mouth of the sampling bottle (1), and a first communicating pipe (12), a second communicating pipe (13) and a third communicating pipe (14) are arranged in a penetrating manner on the first sealing plug (11);
a first water stop clamp (15) is arranged at the upper end of the first communication pipe (12), the lower end of the first communication pipe (12) is flush with the lower surface of the first sealing plug (11), the first communication pipe (12) is detachably connected with a diffusion pipe (2), and the diffusion pipe (2) is used for measuring the volume of dissolved gas;
a second water stop clamp (16) is arranged at the upper end of the second communicating pipe (13), a first air extractor or an air blower is detachably connected to the upper end of the second communicating pipe (13), a bladder (18) is connected to the lower end of the second communicating pipe, and the bladder (18) is arranged in the sampling bottle (1);
and a third water stop clamp (17) is arranged at the upper end of the third communicating pipe (14), and the lower end of the third communicating pipe (14) is close to the bottom of the sampling bottle (1).
2. A novel groundwater dissolved gas sampling device according to claim 1, wherein the first pumping device is a first vacuum pump and the blowing device is a double ball (19) or a blowing pump.
3. A novel groundwater dissolved gas sampling apparatus as claimed in claim 1 or 2, wherein, the lower end of the diffusion pipe (2) is communicated with a level bottle (3) through a fourth communicating pipe (25), saturated solution is contained in the level bottle (3), scale marks are arranged on the surface of the diffusion tube (2), a second sealing plug (21) is arranged at the upper end of the diffusion pipe (2), a rotary switch is arranged at the upper end of the second sealing plug (21), the rotary switch comprises a knob (22), a first joint (23) and a fifth communicating pipe (26), the fifth communicating pipe (26) penetrates through the second sealing plug (21) and is communicated with the interior of the diffusion pipe (2), the fifth communicating pipe (26) is selectively communicated with or separated from the first joint (23) by rotating a knob (22), the first joint (23) is detachably connected with the upper end of the first communicating pipe (12).
4. A novel groundwater dissolved gas sampling device as claimed in claim 3, wherein the saturated solution is a saturated sodium chloride solution (31).
5. A novel groundwater dissolved gas sampling device as claimed in claim 3, wherein the rotary switch further comprises a second connector (24), the second connector (24) is selectively communicated with or separated from the fifth communicating pipe (26) by rotating a knob (22), and the second connector (24) is used for leading out the dissolved gas.
6. A novel groundwater dissolved gas sampling device as claimed in claim 5, wherein the second joint (24) is communicated with a sixth communicating pipe (27), and the sixth communicating pipe (27) is detachably connected with a second air extraction device.
7. A novel groundwater dissolved gas sampling device according to claim 6, wherein the second air extraction device comprises a second vacuum pump (4) and an intermediate bottle (5), the intermediate bottle (5) is provided with a third sealing plug (51), the third sealing plug (51) is provided with a seventh communication pipe (52) and an eighth communication pipe (53) in a penetrating manner, one end of the seventh communication pipe (52) far away from the intermediate bottle (5) is communicated with the second vacuum pump (4), and one end of the eighth communication pipe (53) far away from the intermediate bottle (5) is detachably connected with one end of the sixth communication pipe (27) far away from the knob (22).
8. A novel groundwater dissolved gas sampling device as claimed in claim 7, wherein the height of the lower end of the seventh communication pipe (52) is higher than that of the eighth communication pipe (53).
9. A novel groundwater dissolved gas sampling device according to claim 6, wherein an injector (6) is detachably connected to one end of the sixth communication pipe (27) far away from the knob (22), and the injector (6) is used for transferring the dissolved gas.
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| CN202220198607.5U CN217277191U (en) | 2022-01-25 | 2022-01-25 | Novel gaseous sample of groundwater solution gas device |
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| CN202220198607.5U CN217277191U (en) | 2022-01-25 | 2022-01-25 | Novel gaseous sample of groundwater solution gas device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789027A (en) * | 2022-05-07 | 2022-07-26 | 湖北大学 | Simple methane gas preparation and collection device and method for laboratory |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789027A (en) * | 2022-05-07 | 2022-07-26 | 湖北大学 | Simple methane gas preparation and collection device and method for laboratory |
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