CN212379082U - In-situ collection device based on coastal wetland soil profile pore water - Google Patents
In-situ collection device based on coastal wetland soil profile pore water Download PDFInfo
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- CN212379082U CN212379082U CN202020943346.6U CN202020943346U CN212379082U CN 212379082 U CN212379082 U CN 212379082U CN 202020943346 U CN202020943346 U CN 202020943346U CN 212379082 U CN212379082 U CN 212379082U
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Abstract
The utility model discloses an in-situ collection device based on coastal wetland soil profile pore water, in order to solve the problem that the in-situ sampling of the pore water of different depths of the existing longitudinal profile is difficult, the in-situ collection device comprises a cylindrical water taking frame and a plurality of collection bottles which are longitudinally arranged on the water taking frame at intervals, a plurality of water taking grooves are sequentially arranged on the side surface of the water taking frame from top to bottom along the length direction of the water taking frame, the collection bottles are arranged in the water taking grooves, and a glass fiber filter membrane is arranged at the bottleneck of the collection bottles to filter the collected water sample, so as to ensure that the collected water sample has no interference of sediments, soil particles and microorganisms; in addition, the top end of the water taking frame is provided with a lifting hole, and the bottom end of the water taking frame is provided with a pointed cone part so as to be conveniently inserted into soil; the design of the carrying holes is utilized, and the water taking frame is conveniently taken out by combining the carrying ropes. The scheme can realize multilayer synchronous sampling, the multilayer sampling of the depth profile is not series flow, no cross contamination exists, the structural design is ingenious, and the economic and practical values are high.
Description
Technical Field
The utility model relates to a coastal tidal flat wetland pore water sampling field, concretely relates to in situ collection device based on coastal wetland soil profile pore water.
Background
Nutritive salts (mainly comprising nitrate, nitrite, ammonium salt, phosphate, silicate and the like) in the coastal wetland soil or sediment pore water play an important supporting role in the growth of surface vegetation and water phytoplankton and are important macroelement sources which are indispensable for maintaining a wetland surface ecosystem and a soil microbial ecosystem. The nutrient salts at different depth positions of the longitudinal section of the soil not only relate to the exchange and flow of underground water, but also relate to the supporting effect on vegetation at different depth roots, and also relate to the penetration depth of surface water in the soil, chemical conversion and loss in the penetration process, nitrification and denitrification and other various biochemical processes, so that the nutrient salts are always difficult points and hot points in investigation and research.
However, unlike the direct sampling with water sampler in water, the soil and sediment are solid and have physical barrier effect, which makes it difficult to synchronously obtain non-polluted in-situ water samples of different depths in the longitudinal section of wetland sediment.
Generally, pore water obtained from different depths of the longitudinal section of the coastal wetland soil can be roughly divided into two types: one is destructive sampling, in which a soil or sediment sample is obtained by drilling or digging, and then the soil or sediment is directly subjected to centrifugal pressing or suction filtration, or is subjected to percolation by using a soil solution (pore water) sampler on site, although the sampling method can rapidly obtain a water sample on site, the method can damage the in-situ environment, so that the sample is polluted by artificial sampling, and the components of the pore water solution can be changed due to air pressure change, temperature change and exposure to air oxidation conditions; the other is in-situ undisturbed sampling, namely, a pipeline is buried at a certain depth, and sampling is carried out after a certain time. At present, few devices and equipment for in-situ sampling of soil and sediment depth profiles of coastal wetlands are available; even if a separate in-situ sampling device is provided, the sampling depth and the number of synchronous sampling are less; and it is difficult to ensure that the sample is not polluted by external conditions, and it is also difficult to prevent cross contamination caused by streaming of samples at different depth levels.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem of the pore water in-situ sampling difficulty of the different degree of depth of current longitudinal section, provide an normal position collection system based on coastal wetland soil profile pore water, do not receive the influence that ambient temperature, pressure and air component change, effectively guarantee the precision of normal position sampling.
The utility model discloses an adopt following technical scheme to realize: an in-situ collection device based on coastal wetland soil profile pore water comprises a cylindrical water taking frame, wherein a plurality of water taking grooves are sequentially formed in the side surface of the water taking frame from top to bottom along the length direction of the water taking frame, collection bottles are arranged in the water taking grooves, the height of each water taking groove is higher than that of each collection bottle, and the bottle openings of the collection bottles are sealed by replaceable glass fiber filter membranes; the top of water intaking frame is provided with and carries the hole, and the bottom of water intaking frame is provided with a pointed cone portion to in conveniently inserting soil, and combine to carry the design in hole, can combine to carry the rope and conveniently take out water intaking frame.
Furthermore, the top surface of the water taking tank is an inclined surface, namely a slope is arranged above the bottle opening of the collecting bottle, so that soil pore water can be gradually filled from the top surface and seeps into the collecting bottle, and a clamping jaw for fixing the collecting bottle is arranged on the side wall of the water taking tank.
Furthermore, set up the recess that matches with the bottom of gathering the bottle on the bottom surface of getting the basin to further improve the fixed effect of gathering the bottle, fixed effectual, and make things convenient for getting of gathering the bottle to put.
Furthermore, the water taking grooves are arranged on one side of the water taking frame, and the water taking grooves of different levels are positioned on the same straight line.
Furthermore, the water taking groove is evenly arranged in a staggered mode along the circumferential direction of the water taking frame, and the accuracy of taking water from pore water at different longitudinal depths is further guaranteed.
Furthermore, the water taking frame is of a solid cylindrical structure made of a PC material.
Furthermore, the water taking frame is of a hollow cylindrical structure made of steel materials, and after the water taking groove is formed, the inner space of the water taking frame is a closed cavity.
Furthermore, the collection bottle adopts the high density polyethylene material, does not have the pollution to the water sample.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the section pore water in-situ collecting device provided by the scheme adopts closed in-situ sampling, the water taking frame is inserted into wetland soil and is not influenced by the change of external temperature, pressure and air components, the whole device is driven into the soil through top pressure by utilizing a mode of arranging a water sample collecting bottle in the water taking frame and then is covered by the soil, so that the device has tightness, the sampling of the pore water with different heights of the section is not influenced, and the collected water sample is from the in-situ depth of the soil, so that the device is not influenced by the change of the external temperature and the pressure; during sampling, the air composition change cannot be influenced due to good tightness;
moreover, the scheme can realize multilayer synchronous sampling, the arrangement of the collecting bottles adopts a multilayer design, the multilayer sampling of the depth profile does not flow in series, and no cross contamination exists; the design of the sampling frame can isolate the water sample series flow between different depth layers, avoid cross contamination and ensure that the sample obtained by each layer of the collection bottle is the pore water sample at the preset soil depth.
Drawings
Fig. 1 is a schematic view of a first structure of an in-situ collection device according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of the in-situ collecting device according to the embodiment of the present invention;
fig. 3 is a schematic diagram of a third structure of the in-situ collection device according to the embodiment of the present invention;
fig. 4 is a schematic view of the arrangement mode of the collection bottle in the water intake trough according to the embodiment of the present invention.
Detailed Description
In order to clearly understand the above objects, features and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the specific embodiments disclosed below.
In order to clearly understand the above objects, features and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the specific embodiments disclosed below.
The embodiment provides an in-situ collection device based on the pore water of the soil profile of the coastal wetland, as shown in figure 1, the in-situ collection device comprises a cylindrical water taking rack 1 and a plurality of collection bottles 2 which are longitudinally arranged on the water taking rack 1 at intervals, along the length direction of the water taking rack 1, a plurality of water taking grooves 3 are sequentially arranged on the side surface of the collecting bottle from top to bottom, the collecting bottle 2 is arranged in the water taking grooves 3, the height of the water taking tank 3 is higher than that of the collection bottles 2, the bottle openings of the collection bottles 2 are sealed by filter membranes, 2-3 collection bottles 2 (the number and the size of the collection bottles 2 are determined according to needs) can be arranged at the position of each water taking tank 3, the top end of the water taking rack 1 is provided with a carrying hole 11, the bottom end of the water taking rack 1 is provided with a pointed cone part 4, it is the toper to in the soil of conveniently inserting to combine to carry the design of hole 11, can combine to carry the rope and conveniently take out the water intaking frame.
As shown in fig. 4, the top surface of the water taking tank 3 is arranged in an inclined manner, namely, a slope 21 is arranged above the bottle mouth of the collection bottle 2, so that soil pore water can be gradually filled and infiltrated into the collection bottle from the position, a clamping jaw 5 is arranged on the side wall of the water taking tank and used for fixing the collection bottle 2, a groove 6 is formed in the bottom surface of the water taking tank 3, the size of the groove 6 is matched with the bottom of the collection bottle 2, so that the fixing effect of the collection bottle is further improved, the collection bottle 2 is made of a high-density polyethylene bottle, and the capacity can be flexibly adjusted according to scientific requirements.
The collection bottle 2 is made of high-density polyethylene, so that no pollution is caused to a water sample; the bottle mouth of the collecting bottle is sealed by a Whatman GF/F glass fiber filter membrane (the aperture is 0.7 mu m), so that a water sample can be filtered in real time, the obtained water sample is free from interference of sediments, soil particles and microorganisms, and the obtained water sample can be directly tested on a computer.
As shown in fig. 2-3, the water intake groove can be opened at one side of the water intake frame 1, and can also be uniformly staggered along the circumference, so as to further ensure the accuracy of water intake of pore water, and of course, other grooving modes can be adopted to arrange the collection bottles, so as to ensure that the pore water at different longitudinal depths can be sampled.
In this embodiment, in order to ensure the collection and use effects, the water intake frame 1 is made of a solid cylinder made of Polycarbonate (PC) material, or made of steel material; according to actual requirements, the size and the like of the water taking frame 1 can be specifically designed, for example, the diameter of the water taking frame is designed to be 10cm, the length of the water taking frame is 65cm, and the length of a pointed cone part at the bottom end of the water taking frame is about 15 cm; the interlamellar spacing that the collection bottle is located can be adjusted according to the scientific needs in a flexible way, and this embodiment is tentatively for 10cm, dredges every 10cm from last promptly and gets the basin and lay the collection bottle.
When the device is used, the cylindrical water taking frame 1 is pressed into wetland soil, so that about 5cm is reserved on the surface of the wetland, the bottle opening position of the collection bottle is required to be consistent with the depth of the section, and the collection bottle is arranged at a preset depth; after the collection bottle is placed for a period of time, the water taking frame can be taken out after pore water permeates into the collection bottle.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. The in-situ collection device based on the coastal wetland soil profile pore water is characterized by comprising a cylindrical water taking frame (1), wherein a plurality of water taking grooves (3) are sequentially formed in the side surface of the water taking frame (1) from top to bottom along the length direction of the water taking frame, collection bottles (2) are arranged in the water taking grooves (3), the height of each water taking groove (3) is higher than that of each collection bottle (2), and bottle openings of the collection bottles (2) are sealed by adopting filter membranes; the top end of the water taking frame (1) is provided with a carrying hole (11), and the bottom end of the water taking frame (1) is provided with a pointed cone part (4).
2. The in-situ collection device based on the coastal wetland soil profile pore water as claimed in claim 1, is characterized in that: the top surface of the water taking tank (3) is an inclined surface, namely a slope (21) is arranged above the bottle mouth of the collecting bottle, and a clamping jaw (5) used for fixing the collecting bottle (2) is arranged on the side wall of the water taking tank.
3. The in-situ collection device based on the coastal wetland soil profile pore water as claimed in claim 2, characterized in that: the bottom surface of the water taking groove (3) is provided with a groove (6) matched with the bottom of the collecting bottle (2).
4. The in-situ collection device based on the coastal wetland soil profile pore water as claimed in claim 1, is characterized in that: the water taking grooves (3) are arranged on one side of the water taking frame (1), and the water taking grooves (3) of different depth levels are located on the same straight line.
5. The in-situ collection device based on the coastal wetland soil profile pore water as claimed in claim 1, is characterized in that: the water taking grooves (3) are uniformly arranged in a staggered mode along the circumferential direction of the water taking frame (1).
6. The in-situ collection device based on the coastal wetland soil profile pore water as claimed in claim 1, is characterized in that: the water taking frame (1) is of a solid cylindrical structure made of a PC material.
7. The in-situ collection device based on the coastal wetland soil profile pore water as claimed in claim 1, is characterized in that: the water taking frame (1) is of a hollow cylindrical structure made of steel materials, and after the water taking groove (3) is formed, the inner space of the water taking frame (1) is a closed cavity.
8. The in-situ collection device based on the coastal wetland soil profile pore water as claimed in claim 1, is characterized in that: the collection bottle (2) is made of high-density polyethylene.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020943346.6U CN212379082U (en) | 2020-05-29 | 2020-05-29 | In-situ collection device based on coastal wetland soil profile pore water |
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| CN202020943346.6U CN212379082U (en) | 2020-05-29 | 2020-05-29 | In-situ collection device based on coastal wetland soil profile pore water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117664654A (en) * | 2023-12-11 | 2024-03-08 | 生态环境部南京环境科学研究所 | Water and sediment sampling device |
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2020
- 2020-05-29 CN CN202020943346.6U patent/CN212379082U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117664654A (en) * | 2023-12-11 | 2024-03-08 | 生态环境部南京环境科学研究所 | Water and sediment sampling device |
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