CN114047046B - Heavy metal ion extraction device for heavy metal soil analysis - Google Patents
Heavy metal ion extraction device for heavy metal soil analysis Download PDFInfo
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- CN114047046B CN114047046B CN202111411323.6A CN202111411323A CN114047046B CN 114047046 B CN114047046 B CN 114047046B CN 202111411323 A CN202111411323 A CN 202111411323A CN 114047046 B CN114047046 B CN 114047046B
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Abstract
The invention provides a heavy metal ion extraction device for heavy metal soil analysis, belongs to the technical field of heavy metal detection, and solves the technical problem that the existing heavy metal ions are not thoroughly separated from soil. This a heavy metal ion extraction element for heavy metal soil analysis, including casing, base, upper cover, motor, (mixing) shaft, stirring leaf and electro-adsorption part, be provided with storage barrel mechanism in the installation ring, storage barrel mechanism includes barrel, go-between and yarn cloth cover, is equipped with the dispersion chamber in the barrel, and the cross section in dispersion chamber is oval, and the slip is provided with vertical pushing plate on the inner wall in dispersion chamber, and the gauze cover overlaps in the outside of barrel. According to the storage cylinder mechanism, the meshes of the yarn cloth cover are finer, so that the particles of soil are located in the yarn cloth cover and cannot move to the outer side through the yarn cloth cover, the yarn cloth cover can drain water, heavy metal ions in the water flow out of the yarn cloth cover along with the water, and the heavy metal ions are separated from the soil.
Description
Technical Field
The invention belongs to the technical field of heavy metal detection, and relates to a heavy metal ion extraction device, in particular to a heavy metal ion extraction device for heavy metal soil analysis.
Background
At present, heavy metal ion pollution is quite common, and the heavy metal ion pollution generally comprises soil type and water type. Heavy metal ions are easy to accumulate in animals, plants and human bodies, and the water quality containing the heavy metal ions is seriously threatened for the health of the human bodies after long-term drinking. Heavy metal ions in the soil can be transferred along with groundwater or absorbed by plants, and finally the heavy metal ions have a threat of entering human bodies.
Detection of heavy metal ions in soil needs to be refined and mixed into water, and heavy metal ions are adsorbed through adsorption equipment to achieve extraction of the heavy metal ions, but soil and water cannot be fully mixed in the process of mixing the soil, so that the heavy metal ions still adhere to the surface of the soil again, and cannot be completely separated into the water, so that detection results are affected.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a heavy metal ion extraction device for heavy metal soil analysis, which aims to solve the technical problems that: how to realize thorough separation of soil and heavy metal ions and improve the detection accuracy of heavy metal ions.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a heavy metal ion extraction element for heavy metal soil analysis, includes casing, base, upper cover, motor, (mixing) shaft, stirring leaf and electric adsorption component, the base is fixed in the bottom of casing, the upper cover sets up at the top of casing, the motor is fixed on the upper cover, the output shaft of motor passes the upper cover, and the (mixing) shaft is connected on the output shaft tip of motor, be fixed with a plurality of stirring leaves on the lateral wall of (mixing) shaft, electric adsorption component is fixed on the inner wall of casing, the lower surface of upper cover is fixed with horizontal collar, be provided with in the collar and store up feed cylinder mechanism, and the stirring leaf is located the inside of storing up feed cylinder mechanism, store up feed cylinder mechanism and gauze cover, the collar is connected with collar swing joint, the downside fixed connection barrel of collar, be equipped with the dispersion chamber in the barrel, the cross section of dispersion chamber is oval, slide and be provided with vertical pushing plate on the inner wall of dispersion chamber, the upper end and the lower extreme of pushing plate are all fixed with horizontal telescopic link mechanism, the other one end fixed connection of telescopic link mechanism is on the lateral wall of (mixing) shaft, the outside of telescopic link mechanism is overlapped and is equipped with a supporting spring, one end fixed on the telescopic link mechanism, fixed on the telescopic link in addition; the side wall of the cylinder body is provided with a plurality of side through holes, the bottom of the cylinder body is provided with a plurality of bottom through holes, the gauze sleeve is sleeved on the outer side of the cylinder body, and the top of the gauze sleeve is fixed on the connecting ring.
The working principle of the invention is as follows: when filling, the upper cover is taken down from the top of the shell, the storage cylinder mechanism is taken out from the upper cover, purified water is injected into the shell, soil is filled into the storage cylinder mechanism, and the storage cylinder mechanism is installed back to the upper cover and then fixed at the top of the shell through the upper cover; starting a motor to drive an inside stirring blade and a pushing plate to move, mixing inside soil with water, enabling an inside dispersing cavity to be of an oval cross section, enabling the pushing plate to move along the inner wall of the dispersing cavity, enabling inside water flow to move upwards along the radial direction, changing the flow direction of the inside water, enabling heavy metal ions to flow out of a storage barrel mechanism along with the water flow in the mixing process, and absorbing and collecting the heavy metal ions in the extracted water by an electric absorption part outside the storage barrel mechanism.
The outer surface of the connecting ring is provided with external threads, and the inner wall of the mounting ring is provided with internal threads matched with the external threads.
By adopting the structure, the connecting ring stretches into the mounting ring, and is fixedly connected with the mounting ring through rotating the connecting ring, so that the fixed connection between the storage cylinder mechanism and the upper cover is realized.
A plurality of support rods are fixed on the side wall and the bottom of the gauze sleeve, and the support rods are fixed on the lower surface of the connecting ring.
By adopting the structure, the yarn cloth cover is supported by the support rod, the yarn cloth cover is kept to be propped open at the outer side of the material storage barrel mechanism, so that the contact area of turbid liquid entering the yarn cover and the yarn cover is increased, the blocking effect on the soil particles inside is improved, and the water inside can be ensured to rapidly permeate the yarn cloth cover.
The telescopic rod mechanism comprises a fixed sleeve and a movable rod, the fixed sleeve is sleeved on the outer side of the movable rod in a sliding mode, the fixed sleeve is fixedly connected with the stirring blade, the fixed sleeve is fixedly connected with the supporting spring, and the movable rod is fixedly connected with the pushing plate.
By adopting the structure, the movable rod moves in the fixed sleeve, so that the change of the whole length is realized, the pushing plate can move along with the extension and retraction of the pushing plate, and the pushing plate is supported.
The bottom in the casing is provided with the material mechanism that absorbs, and material mechanism communicates with the circulating pump through the circulating pipe, and the output of circulating pump communicates with the reflux tank through the circulating pipe, and inside the upper cover was seted up to the reflux tank, reflux tank and the inside intercommunication of storage cylinder mechanism.
By adopting the structure, when soil permeates the yarn cloth cover, the soil is settled in the shell, the soil settled to the bottom is sucked away through the suction mechanism, is sent into the reflux tank along the circulating pipe, and is refluxed into the storage barrel mechanism again, so that the soil is mixed and crushed again.
The absorbing mechanism comprises a collecting pipeline and an absorbing pipeline, wherein the collecting pipeline is fixedly connected to the inner wall of the shell, the inner part of the collecting pipeline is communicated with the circulating pipe, the absorbing pipelines are arranged at equal intervals, the absorbing pipeline is fixedly connected to the collecting pipeline, the inner part of the absorbing pipeline is communicated with the inner part of the collecting pipeline, and a plurality of absorbing holes are formed in the bottom of the absorbing pipeline.
By adopting the structure, the earth settled above falls into the lower part through the clearance of the collecting pipeline, the bottom of the shell is collected again, the earth is sucked into the upper part by starting the circulating pump and is sent back to the inside of the storage barrel mechanism again, the earth falling below the collecting pipeline is blocked by the absorbing mechanism, so that the water flow moving above cannot influence the earth settled at the bottom, and the collecting effect on the earth is improved.
The shape of the adsorption pipeline is a polygon prism, and one edge of the polygon prism is positioned at the highest position.
By adopting the structure, one edge is at the highest position, so that the surfaces on two sides of the edge are inclined downwards, soil falling on the inclined surface falls along the surface of the inclined surface, the soil is prevented from falling on the upper surface of the collecting pipeline, and the recovery of the soil is ensured.
The polygon prism is a triangular prism.
By adopting the structure, the triangular prism has fewer sides, the inclined angle of the inclined plane is larger when the edge faces upwards, and soil falling on the inclined plane can fall down rapidly.
Compared with the prior art, the heavy metal ion extraction device for heavy metal soil analysis has the following advantages:
1. the turbid liquid flowing out of the side through holes and the bottom through holes enters the inside of the gauze sleeve, meshes of the gauze sleeve are thin, particles of soil are guaranteed to be located in the gauze sleeve, the turbid liquid cannot permeate the gauze sleeve to move to the outer side, the gauze sleeve can enable water to be discharged, heavy metal ions in the water flow out of the gauze sleeve along with the water, the heavy metal ions are separated from the soil, and the soil particles are reduced to be attached to the electric adsorption component.
2. Soil and water mix in storage barrel mechanism, and the soil is stirred and mixed by stirring leaf and pushing plate to the pushing plate removes in oval cross-section's dispersion chamber, makes inside liquid remove in the horizontal direction, improves the mixed effect of soil and water, makes heavy metal ion thoroughly disperse in the aquatic, guarantees the accurate row of the result of detection.
3. The bottom of dispersion chamber is deposited to the earth of follow storage barrel mechanism discharge, gathers in the bottom, and the rethread is inhaled the material mechanism and is absorbed and flow back to storage barrel mechanism inside again, stirs again and mixes, guarantees all heavy metal ion separation in the earth, guarantees to detect heavy metal ion in the soil and can be adsorbed.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic perspective view of a cartridge mechanism according to the present invention.
Fig. 3 is a schematic top view of the cartridge mechanism of the present invention.
Fig. 4 is a schematic diagram of the structure of A-A in fig. 3.
Fig. 5 is a schematic perspective view of a suction mechanism in the present invention.
Fig. 6 is a schematic bottom view of the suction mechanism according to the present invention.
Fig. 7 is a schematic diagram of the structure of B-B in fig. 6.
In the figure, 1, a shell; 2. a base; 3. an upper cover; 4. a motor; 5. a stirring shaft; 6. stirring the leaves; 7. a storage cylinder mechanism; 8. a telescopic rod mechanism; 9. a support spring; 10. a pushing plate; 11. a mounting ring; 12. an electro-adsorption member; 13. a material sucking mechanism; 14. a circulation pipe; 15. a circulation pump; 16. a cylinder; 17. a connecting ring; 18. a side through hole; 19. a bottom through hole; 20. yarn cloth cover; 21. a collection pipe; 22. an adsorption pipeline; 23. adsorption holes; 24. a reflux groove; 25. a dispersion chamber.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-7, the embodiment provides a heavy metal ion extraction device for heavy metal soil analysis, which comprises a shell 1, a base 2, an upper cover 3, a motor 4, a stirring shaft 5, stirring blades 6 and an electric adsorption component 12, wherein the base 2 is fixed at the bottom of the shell 1, the upper cover 3 is arranged at the top of the shell 1, and the upper cover 3 is movably connected with the shell 1, so that the upper cover 3 can be removed from the top of the shell 1; the motor 4 is fixed on the upper cover 3 and is positioned at the central position of the upper cover 3, an output shaft of the motor 4 penetrates through the upper cover 3, the stirring shaft 5 is connected to the end part of the output shaft of the motor 4, the stirring shaft 5 is driven to rotate by the motor 4, a plurality of stirring blades 6 are fixed on the side wall of the stirring shaft 5, and the stirring blades 6 move along with the stirring shaft 5 to stir water and soil in the stirring shaft so as to enable the soil and the water to be mixed rapidly; the electro-adsorption component 12 is fixed on the inner wall of the shell 1, and the electro-adsorption component 12 is connected with external power supply equipment to enable the electro-adsorption component 12 to be electrified and adsorb heavy metal ions in water; the lower surface of the upper cover 3 is fixedly provided with a horizontal mounting ring 11, a material storage barrel mechanism 7 is arranged in the mounting ring 11, the stirring blade 6 is positioned in the material storage barrel mechanism 7, the material storage barrel mechanism 7 is movably connected with the mounting ring 11, the material storage barrel mechanism 7 can be fixed from the mounting ring 11 and also can be detached, soil is filled into the material storage barrel mechanism 7, the material storage barrel mechanism 7 comprises a barrel 16, a connecting ring 17 and a gauze sleeve 20, the connecting ring 17 is movably connected with the mounting ring 11, the detachment of the whole material storage barrel mechanism 7 is realized, the lower side of the connecting ring 17 is fixedly connected with the barrel 16, a dispersing cavity 25 is arranged in the barrel 16, the cross section of the dispersing cavity 25 is oval, the soil and water are positioned in the dispersing cavity 25, the soil is mixed in the water in the dispersing cavity 25, a vertical pushing plate 10 is arranged on the inner wall of the dispersing cavity 25 in a sliding manner, the pushing plate 10 moves horizontally along the inner wall of the dispersing cavity 25, the water near the inner wall of the dispersing cavity 25 is pushed to move, the upper end and the lower end of the material pushing plate 10 are both fixed with horizontal telescopic rod mechanisms 8, the other end of each telescopic rod mechanism 8 is fixedly connected to the side wall of the stirring shaft 5, the material pushing plate 10 is connected to the stirring shaft 5 through the telescopic rod mechanisms 8, the material pushing plate 10 moves along with the rotation of the stirring shaft 5, the telescopic rod mechanisms 8 stretch and retract in the horizontal direction, the material pushing plate 10 moves in the dispersing cavity 25 with an elliptical section, the material pushing plate 10 is guaranteed to be attached to the inner wall of the dispersing cavity 25 to move, the outer side of each telescopic rod mechanism 8 is sleeved with a supporting spring 9, one end of each supporting spring 9 is fixed on the material pushing plate 10, the other end of each supporting spring 9 is fixed on the telescopic rod mechanism 8, and the movable pressure of the material pushing plate 10 on the inner wall of the dispersing cavity 25 is guaranteed under the supporting action of the supporting springs 9, and the pushing force is guaranteed; the side wall of the barrel 16 is provided with a plurality of side through holes 18, the bottom of the barrel 16 is provided with a plurality of bottom through holes 19, turbid liquid in the dispersing cavity 25 flows outwards through the side through holes 18 and the bottom through holes 19, the turbid liquid outside can enter the dispersing cavity 25 from the side through holes 18 and the bottom through holes 19, the gauze sleeve 20 is sleeved on the outer side of the barrel 16, the top of the gauze sleeve 20 is fixed on the connecting ring 17, turbid liquid flowing out from the side through holes 18 and the bottom through holes 19 enters the inside of the gauze sleeve 20, meshes of the gauze sleeve 20 are thinner, particles of soil are guaranteed to be positioned in the gauze sleeve 20 and cannot move to the outer side through the gauze sleeve 20, the gauze sleeve 20 can drain water, and heavy metal ions in water flow out of the gauze sleeve 20 along with water.
The outer surface of the connecting ring 17 is provided with external threads, the inner wall of the mounting ring 11 is provided with internal threads matched with the external threads, the connecting ring 17 stretches into the mounting ring 11, and the connecting ring 17 is fixedly connected with the mounting ring 11 through rotating, so that the fixed connection between the storage cylinder mechanism 7 and the upper cover 3 is realized.
The side wall of the gauze sleeve 20 and the bottom are fixedly provided with a plurality of support rods, the support rods are fixed on the lower surface of the connecting ring 17, the gauze sleeve 20 is supported by the support rods, the gauze sleeve 20 is kept to be stretched out at the outer side of the storage barrel mechanism 7, the contact area between turbid liquid entering the gauze sleeve 20 and the gauze sleeve 20 is increased, the blocking effect on soil particles inside is improved, and the inside water is guaranteed to rapidly permeate the gauze sleeve 20.
The telescopic rod mechanism 8 comprises a fixed sleeve and a movable rod, wherein the fixed sleeve is sleeved on the outer side of the movable rod in a sliding mode, the fixed sleeve is fixedly connected with the stirring blade 6, the fixed sleeve is fixedly connected with the supporting spring 9, the movable rod is fixedly connected with the pushing plate 10, the movable rod moves in the fixed sleeve, the change of the whole length is achieved, the pushing plate 10 can stretch and retract along with the movable rod, and the supporting effect on the pushing plate 10 is achieved.
The bottom in the casing 1 is provided with the material sucking mechanism 13, and material sucking mechanism 13 passes through circulating pipe 14 and circulating pump 15 intercommunication, and circulating pump 15's output passes through circulating pipe 14 and reflux drum 24 intercommunication, and reflux drum 24 is offered inside upper cover 3, and reflux drum 24 and the inside intercommunication of storage barrel mechanism 7, when earth permeated through yarn cloth cover 20, subsides in the casing 1, and the earth that subsides to the bottom is sucked through material sucking mechanism 13, and in feeding into reflux drum 24 along circulating pipe 14, the inside of storage barrel mechanism 7 is refluxed again, is favorable to carrying out the mixed crushing again of earth.
The suction mechanism 13 comprises a collection pipeline 21 and an adsorption pipeline 22, wherein the collection pipeline 21 is fixedly connected to the inner wall of the shell 1, the inside of the collection pipeline 21 is communicated with the circulating pipe 14, the adsorption pipelines 22 are arranged at equal intervals, the adsorption pipelines 22 are fixedly connected to the collection pipeline 21, the inside of the adsorption pipeline 22 is communicated with the inside of the collection pipeline 21, a plurality of adsorption holes 23 are formed in the bottom of the adsorption pipeline 22, soil deposited above the adsorption pipeline falls into the lower part through the clearance of the collection pipeline 21, the bottom of the shell 1 is collected, the soil is sucked into the upper part by starting the circulating pump 15 and is conveyed back to the inside of the storage cylinder mechanism 7 again, the soil falling below the collection pipeline 21 is blocked by the suction mechanism 13, so that water flow moving above cannot influence the soil deposited at the bottom, and the collection effect on the soil is improved.
The shape of the adsorption pipeline 22 is a polygon prism, one edge of the polygon prism is located at the highest position, and the other edge is located at the highest position, so that the surfaces on two sides of the polygon prism incline downwards, soil falling on the inclined surface falls along the surface of the polygon prism, the soil is prevented from falling on the upper surface of the collection pipeline 21, and the recovery of the soil is ensured.
The triangular prism is less in side face, and inclination of inclined plane is great when the edge up, and the earth that falls on the inclined plane can fall fast.
The invention has the working principle that when filling, the upper cover 3 is taken down from the top of the shell 1, the storage cylinder mechanism 7 is taken out from the upper cover 3, purified water is injected into the shell 1, soil is filled into the storage cylinder mechanism 7, and the storage cylinder mechanism 7 is installed back to the upper cover 3 and then fixed on the top of the shell 1 through the upper cover 3; starting a motor 4 to drive an internal stirring blade 6 and a pushing plate 10 to move so as to mix internal soil with water, wherein an internal dispersing cavity 25 is of an oval cross section, the pushing plate 10 moves along the inner wall of the dispersing cavity 25, so that internal water flow can move upwards along the radial direction, the flowing direction of the internal water is changed, heavy metal ions flow out of a storage barrel mechanism 7 along with the water flow in the mixing process, and the heavy metal ions are adsorbed and collected by an electro-adsorption part 12 outside the storage barrel mechanism 7 so as to extract the heavy metal ions in the water; after soil breaks away from in the storage barrel mechanism 7, the soil is precipitated to the bottom of the shell 1, the circulating pump 15 is started, the soil at the bottom of the shell 1 is pumped away through the adsorption hole 23 at the bottom of the suction mechanism 13, and then the soil is returned to the inside of the storage barrel mechanism 7 for stirring and mixing, so that all heavy metal ions can be guaranteed to break away from the soil, and the detection accuracy is improved.
In combination, through earth and water mixing in the storage barrel mechanism 7, heavy metal ions permeate the storage barrel mechanism 7 along with water, collect in the outside and draw, realize the thorough function of heavy metal ion separation.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (4)
1. The utility model provides a heavy metal ion extraction element for heavy metal soil analysis, including casing (1), base (2), upper cover (3), motor (4), (5) stirring axle, stirring leaf (6) and electric adsorption component (12), the bottom at casing (1) is fixed to base (2), upper cover (3) set up the top at casing (1), motor (4) are fixed on upper cover (3), the output shaft of motor (4) passes upper cover (3), and (5) are connected on the output shaft tip of motor (4), be fixed with a plurality of stirring leaf (6) on the lateral wall of (5) stirring axle, electric adsorption component (12) are fixed on the inner wall of casing (1), characterized in that, the lower surface of upper cover (3) is fixed with horizontal collar (11), be provided with in collar (11) and store up feed cylinder mechanism (7), and stirring leaf (6) are located the inside of store up feed cylinder mechanism (7), store up feed cylinder mechanism (7) including barrel (16), go-between (17) and gauze cover (20), be equipped with dispersion cavity (25) in dispersing and be fixed in the cross section of barrel (16) dispersing in the side (25), the inner wall of the dispersing cavity (25) is provided with a vertical pushing plate (10) in a sliding manner, the upper end and the lower end of the pushing plate (10) are both fixed with horizontal telescopic rod mechanisms (8), the other end of each telescopic rod mechanism (8) is fixedly connected to the side wall of the stirring shaft (5), the outer side of each telescopic rod mechanism (8) is sleeved with a supporting spring (9), one end of each supporting spring (9) is fixed on the pushing plate (10), and the other end of each supporting spring is fixed on each telescopic rod mechanism (8); a plurality of side through holes (18) are formed in the side wall of the cylinder body (16), a plurality of bottom through holes (19) are formed in the bottom of the cylinder body (16), a gauze sleeve (20) is sleeved on the outer side of the cylinder body (16), and the top of the gauze sleeve (20) is fixed on the connecting ring (17); the utility model provides a shell body (1) is provided with inhale material mechanism (13), inhale material mechanism (13) and circulating pump (15) intercommunication through circulating pipe (14), and circulating pump (15)'s output passes through circulating pipe (14) and reflux drum (24) intercommunication, and inside upper cover (3) is seted up to reflux drum (24), reflux drum (24) and the inside intercommunication of storage barrel mechanism (7), inhale material mechanism (13) including collecting pipe (21) and adsorption pipe (22), collecting pipe (21) fixed connection is at the inner wall of shell body (1), collecting pipe (21) inside and circulating pipe (14) intercommunication, and adsorption pipe (22) equidistant are provided with a plurality of, and adsorption pipe (22) all fixed connection is on collecting pipe (21), and the inside of adsorption pipe (22) communicates with collecting pipe (21) inside, and a plurality of adsorption hole (23) have all been seted up to the bottom of adsorption pipe (22), the shape of adsorption pipe (22) is the polygon prism, and the prism of polygon prism is located the highest position, many prisms are the triangle.
2. The heavy metal ion extraction device for heavy metal soil analysis according to claim 1, wherein the outer surface of the connecting ring (17) is provided with external threads, and the inner wall of the mounting ring (11) is provided with internal threads matched with the external threads.
3. The heavy metal ion extraction device for heavy metal soil analysis according to claim 1, wherein a plurality of support rods are fixed on the side wall and the bottom of the gauze sleeve (20), and the support rods are fixed on the lower surface of the connecting ring (17).
4. The heavy metal ion extraction device for heavy metal soil analysis according to claim 1, wherein the telescopic rod mechanism (8) comprises a fixed sleeve and a movable rod, the fixed sleeve is sleeved on the outer side of the movable rod in a sliding mode, the fixed sleeve is fixedly connected with the stirring blade (6), the fixed sleeve is fixedly connected with the supporting spring (9), and the movable rod is fixedly connected with the pushing plate (10).
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| CN115634920B (en) * | 2022-11-05 | 2023-05-16 | 安徽省生态环境科学研究院 | Integrated extraction device for extracting various heavy metals in soil |
| CN116499853B (en) * | 2023-06-19 | 2023-08-18 | 北京建工环境修复股份有限公司 | Soil heavy metal ion extractor |
| CN116558925B (en) * | 2023-07-05 | 2023-09-12 | 北京建工环境修复股份有限公司 | Extraction device for measuring concentration of heavy metals in soil pollution after remediation |
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| JP2004294329A (en) * | 2003-03-27 | 2004-10-21 | Hitachi Constr Mach Co Ltd | Method and apparatus for analyzing amount of elution of heavy metals contained in soil, and sample for the same |
| JP2005161170A (en) * | 2003-12-01 | 2005-06-23 | Koken Boring Mach Co Ltd | Soil pollutant extraction structure and method for the same |
| CN105032301B (en) * | 2015-06-01 | 2018-02-23 | 南京工业大学 | Reaction device and process for producing polyoxyethylene |
| NL2017769B1 (en) * | 2016-11-11 | 2018-05-24 | Scrapscanner B V | Process and apparatus for scrap metal scanning |
| CN107748092A (en) * | 2017-09-07 | 2018-03-02 | 无锡龙盈环保科技有限公司 | The pretreating device of soil acidity or alkalinity detection |
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| CN212157963U (en) * | 2020-03-30 | 2020-12-15 | 安徽中超环保设备有限公司 | Soil detects uses drying apparatus |
| CN213022526U (en) * | 2020-07-21 | 2021-04-20 | 漯河市宏安检测评价服务有限公司 | Soil detects uses quick edulcoration ware of soil |
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