20 results about "Soil sediment" patented technology

The utility model relates to a flexible sealing soil sediment and bottom mud sampler, which belongs to the technical field of soil sampling and comprises an outer cylinder and a piston device, the piston device comprises a connecting rod and a piston push plate, the top end of the outer cylinder is covered with a cover plate, an inner cylinder is sleeved in the outer cylinder, and a sampling cylinder is sleeved in the inner cylinder. The piston push plate is hermetically and slidably arranged in the sampling cylinder, the top end of the connecting rod slides the cover plate, and a plurality of vent holes are formed in the cover plate; a sealing device is arranged in the outer cylinder, the sealing device comprises a flexible sealing gasket and two guide rails which are symmetrically arranged, the flexible sealing gasket is arranged between the outer cylinder and the inner cylinder in a sliding mode, and connecting rings are fixedly installed on the two side faces of the flexible sealing gasket; pull ropes are fixed to the two ends of the flexible sealing gasket, the pull ropes at the two ends of the flexible sealing gasket slidably penetrate through the cover plate, and each pull rope is provided with a plurality of connecting rings at intervals in the length direction; and each connecting ring is sleeved with the guide rail in a sliding manner. The utility model has the advantages of small sample introduction resistance, convenience in sample sealing and sample discharging, and small disturbance on the sample.

The invention relates to the technical field of carbon dioxide detection, and particularly discloses a device and method for automatically measuring carbon dioxide in soil sediment. The device comprises a first cylinder and a second cylinder, and a first outer limiting groove is formed in the upper end of the outer wall of the first cylinder; an inner limiting groove and a second outer limiting groove are formed in the lower end of the inner wall of the second barrel and the upper end of the outer wall of the second barrel respectively, the second outer limiting groove is the same as the first outer limiting groove so that the second barrel can be assembled, and the first barrel and the second barrel can rotate synchronously; the measuring mechanism, the first barrel and the second barrel are independently arranged, so that the measuring mechanism can move by a specified depth in the first barrel and the second barrel, the measuring depth can be adjusted according to actual requirements, the first barrel and the second barrel are convenient to assemble, the requirement for measuring the depth is further met, fixed-point measurement is facilitated, and the measuring efficiency is improved. Or portable operation is realized.

The present invention discloses a pore pressure response model test system for gas-containing silt sediment and an operation method, which is composed of a gas release unit, a saturation unit and a control module unit. The gas release unit includes a top plate and a bottom plate, a cylindrical protective shell is fixedly connected between the outer sides of the top plate and the bottom plate, two baffles are fixedly connected inside the protective shell, and seabed sediments are arranged between the two baffles. A fixed cylinder is fixedly connected to the central side wall of each baffle, and each fixed cylinder passes through the side walls of the top plate and the bottom plate respectively. The present invention is established through a gas release unit, a saturation unit and a control module unit, and then the influence of seawater depth on slope stability in slope damage caused by gas diffusion of gas-containing silt is studied respectively under the assumption that the gas diffusion amount of gas-containing silt is the same, so as to provide a certain basis for the study of seabed gas-containing sediments, and the practicability is high.

This invention provides a method for detecting dichloronaphthalene, a persistent organic pollutant in soil sediments. The method includes: collecting soil sediment samples, pre-treating them by freeze-drying, grinding, and sieving to obtain a sample; extracting and purifying the sample using an organic solvent to prepare a test solution; analyzing and detecting the sample using ultra-high performance liquid chromatography-atmospheric pressure chemical ionization mass spectrometry (UPLC-APCI-MS / MS), and calculating the measured value of dichloronaphthalene in the test solution by substituting the obtained peak area and fractionation ratio into a specific formula. This invention fills the gap in my country's technology for detecting dichloronaphthalene-type persistent organic pollutants in soil sediments. This method can effectively eliminate interference from complex matrices, accurately determine trace amounts of six dichloronaphthalene isomers, and has the advantages of high sensitivity, strong anti-interference ability, simple operation, and high detection accuracy.

The invention discloses an imaging electrode and method for representing iron ore driven phosphorus release in soil sediment. The imaging electrode comprises a conducting layer, an imaging layer and a diffusion protection layer wrapping the conducting layer and the imaging layer. The conductive layer comprises a conductive base material and a to-be-detected sample covered on the surface of the conductive base material, the to-be-detected sample contains iron ore adsorbed with phosphorus, the imaging layer is a film formed by first gel, a phosphorus adsorbent is dispersed in the first gel, and the first gel is agarose gel or cross-linked gel of polyacrylamide and agarose; and a diffusion protective layer is agarose gel. The imaging electrode can truly and effectively simulate the reduction process of iron ore in soil and sediments, accurately reflect the phosphorus reduction and release behaviors of iron ore in different thermodynamic states in a natural environment, and accurately obtain the actual critical potential of phosphorus release caused by reduction of iron ore in a sample to be detected; and the ratio of the steady-state iron ore to the metastable-state iron ore in the sample can be obtained through the obtained image.

This invention discloses a measurement system and method suitable for measuring the sand-fixing capacity of vegetation roots in the field, comprising: a sample lifting device, a field module, a measurement module, a sand sample crushing device, and an integrated control system. This invention can simultaneously achieve real-time and high-precision monitoring of data such as sand content and flow velocity during experiments. It quantifies and analyzes the sand-fixing capacity of vegetation roots through parameters such as soil erosion rate and critical initiation velocity of soil sediment, making it particularly suitable for determining the sand-fixing capacity of vegetation roots in coastal areas.

The invention discloses a method for synchronously detecting quaternary ammonium salts with different polarities and structural analogues thereof in high-organic-matter soil / sediment. The method comprises the following steps: performing freeze drying and low-temperature homogeneous grinding on a soil or sediment matrix sample, adding an internal standard substance and an extracting agent, performing vortex mixing, performing ultrasonic extraction, and performing low-temperature and high-speed centrifugation to obtain an extracting solution; heating in a water bath, carrying out nitrogen blowing concentration on an extracting solution until the extracting solution is nearly dry to obtain a concentrated solution, carrying out purification, leaching and impurity removal on the concentrated solution in a methanol-activated solid-phase extraction column, concentrating an eluent, adding a recovery rate indicator, and fixing the volume to obtain a sample to be detected; and detecting the sample to be detected by adopting an ultra-high performance liquid chromatography-tandem triple quadrupole mass spectrometer. According to the method, quaternary ammonium salts with different polarities and structural analogues thereof can be accurately quantified, and compared with a traditional method, the pollutant detection class group is wider, the recovery rate of substances to be detected is high, and the stability is higher.

The invention provides a rapid leaching and dewatering system for the remediation of PFAS-contaminated solid matrix material (e.g., soil, sediment, and / or sludge material) for the removal of PFAS compounds, and other contaminants, therefrom. The system mobilizes contaminants from a solid state (soil / sediment / sludge) to a liquid state resulting in a clean solid material.

The invention provides a rapid leaching and dewatering system for the remediation of PFAS-contaminated solid matrix material (e.g., soil, sediment, and / or sludge material) for the removal of PFAS compounds, and other contaminants, therefrom. The system mobilizes contaminants from a solid state (soil / sediment / sludge) to a liquid state resulting in a clean solid material.

The utility model discloses a rapid detection device for metal components in soil sediments, which comprises a base and an index plate movably mounted on the base, and a detection mechanism is arranged on the index plate. The detection mechanism comprises a gear motor, a hollow rotating shaft, a fixed round rod, a guide disc, a plurality of groups of fixed sliding rails, a plurality of fixed clamping seats, a plurality of sliding clamping seats, a plurality of connecting rods, a fixed frame I and a spectrum detector. The soil sediment metal component detection device has the beneficial effects that the detection mechanism is arranged on the index plate, the bearing cylinders are respectively placed between the fixed clamping seat and the sliding clamping seat which are opposite to each other, and when the index plate rotates, the index plate is matched with the guide plate, so that the bearing cylinders can be automatically clamped, continuous detection of soil sediment metal components is realized, and the detection efficiency is improved; the grinding mechanism adopts a plurality of annular grinding rollers to be matched with an annular groove, so that the soil sample can be ground, particles in the soil sample are reduced, and the metal component detection effect is improved.

The invention provides a rapid leaching and dewatering system for the remediation of PFAS-contaminated solid matrix material (e.g., soil, sediment, and / or sludge material) for the removal of PFAS compounds, and other contaminants, therefrom. The system mobilizes contaminants from a solid state (soil / sediment / sludge) to a liquid state resulting in a clean solid material.

The utility model relates to the technical field of water, soil and sediment, and discloses a water, soil and sediment content sampling and measuring device which comprises a balancing platform, fixing frames are fixedly connected to the bottom ends of the two sides of the balancing platform, a circulation box is fixedly connected to the top end of the balancing platform, and a fixing assembly with strong supporting force is arranged between the fixing frames. The fixing assembly comprises a first connecting frame, a collecting barrel, an inserting plate, a second connecting frame, a mounting base and a supporting bottom plate. According to the water and soil sediment content sampling and measuring device, by arranging a first connecting frame, a second connecting frame, a supporting bottom plate, an inserting plate and a mounting base, the situation that the bottom of a collecting barrel is strongly extruded due to the too large sediment content is avoided, the safety and stability of the collecting barrel are enhanced, and the problems that sampling equipment is limited in fixing force and poor in sampling effect are solved. The problems that equipment shakes easily in the silt introduction period, the sampling safety is greatly reduced, the bottom of the equipment is extruded for a long time easily due to the excessive silt content, and the damage rate is high are solved.

The invention relates to the technical field of soil sediment component detection, and discloses a soil sediment component detection device which comprises a rotating ring, the top of the rotating ring is fixedly connected with a gear ring, the surface of a driven bent rod is fixedly connected with a bent plate, and the end, away from the driven bent rod, of the bent plate is fixedly connected with a driven groove ring. The inner wall of the driven groove ring is slidably connected with a pull ring. According to the device, the cleaning mechanism is arranged, meanwhile, a rotating ring can drive a right-angle telescopic rod to rotate while rotating, the right-angle telescopic rod can drive a cleaning plate and a cleaning brush to rotate, soil attached to the surface of a cone can be cleaned away in the rotating process of the cleaning brush, and a pull ring can be driven to rotate on the inner wall of a driven groove ring while the cleaning plate rotates; and the cleaning brush is effectively arranged, so that soil adhered to the surface of the cone is cleaned away, the labor force of workers is saved, the cleaning efficiency is improved, and the efficiency is improved for next detection.

The utility model discloses a foundation pit drainage device for constructional engineering, which comprises a foundation pit, a water suction pump and a filtering device, and the bottom of the water suction pump is fixedly connected with the left side of the top of the foundation pit. By arranging the air bag, before a user throws the filtering device into water accumulated in a foundation pit, the air bag filled with air is inserted into the mounting ring, then after the filtering device is thrown into the water, the filtering device floats on the upper layer of the water due to the floating force of the air bag in the water, and then the water suction pump is driven from top to bottom; the problems that after the filtering device is directly thrown into water, the filtering device can automatically sink into the bottom of the foundation pit and sink into a soil precipitation layer at the bottom of the foundation pit due to the weight of the filtering device, when a water suction pump pumps out accumulated water in a base body, the filtering device is extremely heavy in filtering work due to the coverage of soil, the water suction efficiency of the water suction pump is reduced, and the water suction efficiency of the water suction pump is reduced are solved. And the drainage working time of the foundation pit is prolonged, and the effect of assisting the filtering device in floating is achieved.

The invention relates to a sampling device for measuring sediment in desert areas, and relates to the technical field of sampling devices. When a sampling mechanism is inserted into loose desert soil, the desert soil will enter a transparent storage tube. After the transparent storage tube is filled, a conical head can be rotated so that two sampling holes on the conical head are not aligned with the two transparent storage tubes, and the upper surface of the conical head seals the two transparent storage tubes, thereby preventing the desert soil in the transparent storage tubes from flowing out during the ascending process of the sampling mechanism, so that the device can be suitable for sampling soil sediment in desert areas. The sampling mechanism can be rotated horizontally and vertically by a rotating mechanism. When the device is placed on the desert ground, the horizontal direction and the vertical direction of the sampling mechanism can be changed by the rotating mechanism, so that the bubble in the bubble level is located at the center of the instrument, and vertical sampling can be performed without the need for workers to rely on experience, thereby improving the sampling success rate of the device.

The application provides a magnetic QuEChERS purifier and application thereof in pollutant detection, and the purifier is a MIL-88A derived carbon material which is prepared by high-temperature carbonization of a MIL-88A precursor, has a large specific surface area, rich pores, various surface functional groups and superparamagnetism, is used in the purification step of QuEChERS pretreatment, can efficiently adsorb and remove humic acid and other matrix interference substances in soil / sediment extract, has weak adsorption to target pollutants BPs, and can realize rapid separation in combination with an external magnetic field. The detection method established based on this has the advantages of low matrix effect, high recovery rate, simple and fast operation, and improves the accuracy and reliability of pollutant detection in soil / sediment.

The present invention relates to the technical field of soil heavy metal detection, and discloses a sifter for detecting heavy metals in soil sediments, comprising a frame, and further comprising: a guide block arranged on the inner wall of the frame and distributed in an annular shape, the guide block being rotatably connected to the annular frame, the annular frame being fixedly connected to the bottom of a screening drum, the inner wall of the screening drum being slidably connected to the outer wall of the screen, the screening drum being connected to the screen via an oscillating component, and the screen being provided with sieve holes; a scattering component arranged on the screening drum and distributed in an annular shape; a scraper component arranged on the frame, and the screen can be oscillated by the cooperation of the scraper component and the oscillating component; the present invention drives the screening drum and the screen to rotate synchronously by a driving component, so that the screen can screen the soil, and in the screening process, the scattering component is used to scatter the accumulated soil, thereby facilitating the screen to screen the soil.

The utility model discloses a soil sediment DNA (deoxyribonucleic acid) extraction device with a temperature regulation and control function, which belongs to the technical field of sediment extraction and comprises an arc-shaped frame, fixed end plates are symmetrically and fixedly mounted at two ends of the arc-shaped frame, a mounting seat is fixedly mounted on one side of one fixed end plate, and the other side of the other fixed end plate is provided with a temperature regulation and control device. And a stirring motor is fixedly mounted in the mounting seat in an embedded manner. According to the soil sediment DNA extraction device with the temperature regulation and control function, a heating plate, a stirring motor, a stirring shaft and stirring blades are arranged, and the stirring motor and the heating plate are started at the same time, so that the stirring motor drives the stirring shaft to rotate in an arc-shaped frame, and the stirring blades stir between the arc-shaped frame and an arc-shaped filter screen; meanwhile, the heating plate is used for heating the soil sediments in the arc-shaped frame, so that the extraction of DNA in the soil sediments is accelerated, and impurities in the soil sediments are prevented from blocking the arc-shaped filter screen to influence the filtration and extraction of the DNA by the arc-shaped filter screen.

The embodiment of the utility model provides a device for simultaneously collecting and detecting hexavalent chromium and trivalent chromium in water / soil / sediment. The device comprises a base, a cover body, a filtering membrane layer, a diffusion layer, a first adsorption layer and a second adsorption layer, wherein the cover body covers the base to form a cavity; the filtering membrane layer, the diffusion layer, the first adsorption layer and the second adsorption layer are arranged in the cavity; a sample introduction window is formed in the central area of the cover body; the filtering membrane layer is arranged close to the sample introduction window; the diffusion layer is in contact connection with the filtering membrane layer; the first adsorption layer is in contact connection with the diffusion layer and is used for adsorbing trivalent chromium ions in the sample to be detected; the second adsorption layer is in contact connection with the first adsorption layer and is used for adsorbing hexavalent chromium ions in the sample to be detected. The first adsorption layer and the second adsorption layer are arranged and used for adsorbing the trivalent chromium ions and the hexavalent chromium ions in the to-be-detected sample respectively, hexavalent chromium and trivalent chromium in water / soil / sediment are collected and detected at the same time, the detection process is simplified, and the detection efficiency is improved.

The invention discloses a high-throughput detection method and system for the electron transfer capacity of microorganisms, and belongs to the field of electrochemical analys.The high-throughput detection method for the electron transfer capacity of the microorganisms comprises the following steps that S1, x groups of soil / sediment samples at different depths are collected and subpackaged into N containers, overlying water is added to serve as electrolyte, s2, N / (n * x) different constant potentials are applied to the working electrodes in the N three-electrode systems, each potential corresponds to n independent biological samples, N is larger than 8, N / n is a positive integer, n is a positive integer larger than or equal to 2, x is a positive integer larger than or equal to 2, and n is a positive integer larger than or equal to 2; and S3, detecting extracellular electron transfer current of microorganisms of the soil / sediment samples in the N containers, comparing the current under different potentials, and selecting the flora generating the maximum current. According to the invention, multi-potential parallel enrichment is realized, and high-throughput detection is realized.