563 results about "Shake up" patented technology

The invention provides aqueous diamond polishing liquid, process for preparation and purpose. The main components are diadust, dispersion stabilizer, suspending agent, pH modifying agent, antiseptic agent, organic solvent and deionized water. The preparing technique of the invention is that organic solvent, diadust, prior prepared suspending agent, deionized water and dispersion stabilizer are mixed, then the mixture is stirred or supersonically dispersed uniformly, finally pH modifying agent and antiseptic agent are added, and the preparation is accomplished after shaking up. The lapping liquid can be widely used in grinding and polishing in various departments and areas of optical instruments, glasses, ceramics, rigid alloy, diamonds, artificial lens, optical fiber, LED display, integrated circuit, semiconductor, hard disk and the like. The lapping liquid can be kept in uniform and stable state, generates no precipitation, delamination or invalidation.

The invention relates to an automatic fluid preparation system and an automatic fluid preparation machine used for preparing intravenous fluids. The automatic fluid preparation system comprises an ampoule bottle conveying device, a penicillin bottle conveying device, an ampoule bottle breaking device, an injector arrangement device, a shaking up device, an infusion bottle conveying device and a multifunctional manipulator. Through the organic combination of the above devices, the fluid preparation is automatically completed in class 100 clean sterile environment without manual operations, so that safety and convenience are increased. In addition, after medical staff inputs an instruction sheet for fluid preparation, the automatic fluid preparation system can automatically check the types of configured medicine bottles, if differences occur, a dispensing action is stopped and an alarm is generated. The automatic fluid preparation system carries out a dispensing program after the medicine staff arranges the medicine which needs to be prepared, the whole process is carried out in a clean environment, so that manual intervention is reduced and the purpose of clean and safe production is achieved.

An electrical card connector, in which a shielding member introduced therein has a latch, and an against portion used for abutting against a guide rod of a ejector and a top of an fixing end of the guide rod, respectively, so as to limit an upward displacement of the guide rod. This configuration can prevent the guide rod from shaking up and down; the guide rod is thus securely fixed. On the other hand, the guide rod further includes a protrusion slideably mating with a corresponding groove of an insulating housing, which make the slider slide reliably in a front-to-back direction. Moreover, a guide groove of the slide rod is mated with a guide rib of the insulating housing so as to make the slider slide stably on the insulating housing. Thereby, the electrical cards can be inserted or ejected stably and smoothly.

The invention discloses a kit for detecting pig pseudorabies virus antibodies and a block enzyme-linked immuno sorbent assay (ELISA) method. The kit for detecting pig pseudorabies virus antibodies comprises pig pseudorabies virus monoclonal antibodies which are labelled by horseradish peroxidase, wherein the pig pseudorabies virus monoclonal antibodies are monoclonal antibodies obtained by pig pseudorabies viruses as immunogens and the pig pseudorabies viruses are pseudorabies virus strain Ea. The kit for detecting pig pseudorabies virus antibodies also comprises an enzyme label plate, a sample diluent, negative and positive contrasts, a coloured solution, a washing solution, and a stopping solution. The block ELISA method comprises the following steps of 1, taking out a detection plate pre-coated with virus antigens from the kit for detecting pig pseudorabies virus antibodies, adding diluted blood serum needing to be detected into the detection plate pre-coated with the virus antigens, and simultaneously, setting negative and positive contrast apertures, 2, shaking up the diluted blood serum in the negative and the positive contrast apertures, shaking off a solution in the negative and the positive contrast apertures, and washing the detection plate by the washing solution, and 3, adding the pig pseudorabies virus monoclonal antibodies labelled by horseradish peroxidase into the negative and the positive contrast apertures, washing, adding the colored solution into the negative and the positive contrast apertures to carry out room-temperature coloration in the dark, adding the stopping solution into the negative and the positive contrast apertures, and determining OD630nm values of the negative and the positive contrast apertures by an ELISA apparatus. The block ELISA method has the advantages of good singularity, high sensitivity, short detection time, and high accuracy because of utilization of an S/N ratio method in result determination.

The invention discloses a method for preparing a high-quality large-size two-dimensional material. The method includes: extruding and grinding the mixture of a layered material and grinding particles to strip the layered material so to obtain evenly-stripped solid powder, wherein the particle size of the grinding particles is 10-10000 meshes, and the solid powder mainly comprises large-size two-dimensional materials with the size being 0.1-20 micrometers; placing the stripped solid powder into a solvent, shaking up, settling, and taking supernate to obtain the dispersion liquid of the high-quality large-size two-dimensional material. The method has the advantages that the method is high in stripping efficiency, factors such as solubility limit need not to be considered during the grinding, the prepared two-dimensional material is large in size and good in crystal structure, and a solution with the concentration reaching up to 50mg/mL, which is the highest currently, can be prepared by selecting an appropriate solvent; the high-concentration ink is of great significance to the application of the two-dimensional material to printing devices and flexible electronics.

A toner housing container includes: container body; conveying portion; pipe receiving port; and uplifting portion. Container body includes; protruding portion protruding from container body interior side of container opening portion to one end of container body; and shutter member moving between closing and opening positions to close and open container opening portion. Uplifting portion includes: uplifting wall surface extending from container body internal wall surface toward protruding portion; and curving portion curving to conform to protruding portion. Shutter member moves from closing to opening position upon push by conveying pipe. When toner housing container is mounted on toner conveying device, protruding portion is present between curving portion and toner receiving port of conveying pipe inserted and extends along shutter member moving region. Toner has bulk density of ≦0.399 g/cm³ when toner housing container is shaken up-and-down 10 times at 25° C., 50% RH, and put such that container opening portion faces downward.

The invention discloses a blending device for a hematology analyzer. The blending device comprises idler wheels which can rotate for 360 degrees and a roller for bearing a test tube stand, wherein the roller and the idler wheels are fixed together; the inner part of the roller is provided with a space for containing the test tube stand; a plurality of test tubes can be contained on the test tube stand. When the blending device works, a plurality of the test tubes are contained on the test tube stand and the test tube stand is arranged in the roller; the idler wheels rotate and drive the roller to rotate for 360 degrees or 180 degrees, so that blood samples in the test tubes can be uniformly blended. The blending device disclosed by the embodiment of the invention can carry out shaking-up operation on a plurality of the test tubes in the test tube stand for one time so that times for grabbing the test tubes can be reduced by shaking up a plurality of the test tubes for one time when being compared with a shaking-up device in the prior art, and the quantity for shaking up the test tubes for one time is increased; therefore, the blending efficiency of the hematology analyzer is improved.

The invention discloses an anti-adhesion plate feeding manipulator with a distance detection function. The anti-adhesion plate feeding manipulator comprises a transverse main shaft. A middle manipulator arm set which extends downwards and is used for sucking plates is arranged in the middle of the transverse main shaft. Shaking manipulator arms extending downwards and air blowing assemblies are correspondingly arranged at the two ends of the transverse main shaft. Each shaking manipulator arm comprises a shaking sucker and a joint connected with the upper end of the shaking sucker. A cavity is formed in each joint. An air inlet hole communicating with the corresponding cavity is formed in one side of each joint. The air inlet holes are connected with a first air source through a first air pipe. The joints are driven by a shaking drive mechanism to shake back and fourth in the vertical direction. The anti-adhesion plate feeding manipulator has the beneficial effects that in the ascending process of the plates, the shaking suckers at the two ends are driven by the shaking drive mechanism to shake up and down, so that the corresponding portions of the top layer of the plate are driven to shake up and down, meanwhile air is blown between the top layer of the plate and the next layer of the plate below the top layer of the plate through nozzles of the blowing assemblies, and plate adhesion is prevented.

The invention discloses a method for detecting pesticide residues in sulfur-containing vegetables by an enzyme inhibition method. The method comprises the following steps of 1, preparing a standard solution, 2, preparing a sample, 3, testing control groups through the processes of adding a buffer solution into a beaker, adding dropwisely acetate or sodium hydroxide into the beaker, adjusting a pH value of the mixed solution to a pH value of 9, adding an enzyme solution and a color-developing agent into the mixed solution with a pH value of 9, shaking up, standing at a temperature of 37 DEG C for 15 minutes, adding a substrate solution into the mixed solution treated by the previous step, shaking up, and detecting an absorbance variation value delta A0 of the mixed solution undergoing a reaction at wavelength of 410 nanometers for 3 minutes by a spectrometer, 4, adding sulfur-containing vegetable sample extract into a beaker, carrying out processes same as the processes of the step 3, and detecting an absorbance variation value delta A1 of a vegetable sample mixed solution undergoing a reaction at wavelength of 410 nanometers for 3 minutes by a spectrometer, and 5, calculating an enzyme inhibition percentage according to a formula of an enzyme inhibition percentage=[(delta A0-delta A1)/delta A0]*100, wherein when the calculated enzyme inhibition percentage is great than or equal to 50%, it is shown that there are pesticide residues in the detected sulfur-containing vegetable. The method eliminates the interference of sulfides in a sulfur-containing vegetable on pesticide residue detection through adjustment of a pH value of a vegetable sample solution, can rapidly, simply and accurately detect a pesticide residue ratio of a sulfur-containing vegetable, has a low cost, and is suitable for on-site detection.

The invention relates to an establishing method for a dendrobe characteristic fingerprint spectrum. The establishing method comprises the following steps: (1) preparing a standard sample liquid: taking dendrobe, smashing, sieving, adding methyl alcohol, ultrasonically filtering, rotating and steaming the filtrate, concentrating till being dry, dissolving with a methyl alcohol solvent, finally keeping constant volume and shaking up to prepare the standard sample liquid; (2) preparing a reference substance liquid: precisely weighting a certain amount of isoschaftoside and diluting with a methyl alcohol solution to prepare the reference substance liquid; (3) measuring a standard fingerprint spectrum: respectively injecting the standard sample solution and the reference substance solution into a high performance liquid chromatograph, and calculating the relative retention time and the retention peak area of each characteristic peak of a standard sample by taking isoschaftoside chromatographic peak as a reference peak of the fingerprint spectrum to prepare the standard fingerprint spectrum. According to the method for establishing the fingerprint spectrum, provided by the invention, the nature of the fingerprint chromatographic peak with the reference peak area being more than 5% is determined, excessive fuzziness of the existing fingerprint spectrum is broken through, the main ingredients of the fingerprint spectrum are further determined and the integrality and ingredient specificity of the dendrobe characteristic fingerprint spectrum are unified.

The invention relates to an automatic shaking device for medical test tubes and belongs to the field of medical devices. The automatic shaking device comprises a workbench, a support, an elevating gear, a clamping device, a supporting seat, a motor, a shaft coupling, a first helical gear, a second helical gear, a vertical shaft, a crank, a connecting rod, a lantern ring and a rubber ring. Through the elevating gear, height of the clamping device is adjusted to fit height of a test tube; and through the motor for driving a crank-link mechanism, automatic shaking-up of the test tube is realized. The device simulates manual wrist-shaking for shaking of a test tube, and then the test tube moves back and forth with a stationary shaft as a rotating shaft. Therefore, hands are freed, consistent force is maintained, and the shaking effect is good. Meanwhile, the device also can control the shake-up time accurately to avoid liquid deposition at the bottom of the test tube, thus being beneficial to optimization of experimental data.

The invention discloses a method for rapidly determining content of a preservative in a condiment. The method comprises the following steps: a) weighing a condiment sample; b) pre-treating the sample to obtain sample solution; c) sequentially adding internal standard solution and extracting agents to the sample solution; d) shaking up and taking supernatant; e) chromatographically analyzing the supernatant to obtain chromatographic analysis data; and f) comparing the chromatographic analysis data with predetermined preservative standard data to obtain the preservative content of the condiment. The method can help determine the content of the preservative in the condiment accurately and rapidly, and determine the contents of a plurality of preservatives in the condiment only for once, thus the method is efficient and has accurate result.

A water control type automatic cooking pot is composed of a stainless steel pot and an electric cooking stove. The pot bottom of the stainless steel pot is made into a cone shape with the middle protruding, a plurality of upper buckle claws are manufactured on the outer circle of the upper end of the stainless steel pot, an air-water isolating air outlet is formed in the left end of a stainless steel pot cover, a sealing ring is fitted on the inner circle of the buckle claw edge of the lower end of the pot cover, a plurality of lower buckle claws are manufactured on the inner circle of the buckle claw edge, a conical electric hot tray is arranged on the electric cooking stove and is matched with the surface of the pot bottom of the stainless steel pot, a temperature sensing probe is assembled in the middle of the electric hot tray, and the upper end face of the temperature sensing probe makes tight contact with the bottom center of the stainless steel pot. Drinking water with different heights is added in the stainless steel pot within the numerical range between the highest position and the lowest position of a water level dividing rule according to different requirements, water addition amount decides the cooking time, the cooked degree of food is decided by the cooking time, and the temperature of the pot bottom can be selected freely between 120 DEG C and 150 DEG C to meet the requirements of juice reducing and the cooked degree of different dishes. When the stainless steel pot is sealed, the stainless steel pot can be shaken up and down by holding a handle to mix fried dish evenly, and the water control type automatic cooking pot can be used for steaming dishes, buns and stuffed buns by adding a food steamer.

The invention relates to a measurement method of the phosphorous content in an iron ore, in particular to a method for measuring the phosphorous content by adopting a bismuth phosphomolybdate blue-sulfuric acid photometry. The method comprises the following steps of: weighing 0.25g of sample and putting into a platinum crucible containing about 2g of mixed fusing agent, putting in a muffle furnace with the temperature of 100 DEG C, fusing for 10min and taking out; cleaning the exterior of the platinum crucible, then putting the platinum crucible into a beaker containing about 80ml of hot water, adding 320ml of concentrated HNO on an electric furnace, heating at low temperature and dissolving, leaching the crucible out, taking the beaker out, cooling, then transferring into a 250ml volumetric flask, diluting to a scale and shaking up for later use; sucking 25ml of mother solution of a fusing sample in the platinum crucible, putting into a 50ml volumetric flask, adding 2.5ml of bismuth nitrate solution, 5ml of ammonium molybdate solution, 3ml of 8mol/L sulfuric acid solution and 5ml of ascorbic acid solution (prepared when needed), shaking up, carrying out color comparison at 750nm wavelength, measuring an absorbance value, and carrying out result conversion by using a guide sample with similar ingredients. The invention effectively solves the problem of instable absorbance value in a method for measuring the phosphorous content by adopting a traditional molybdenum blue spectrophotometry and ensures that the absorbance remains unchanged within two hours.

The invention discloses a gas chromatography-mass spectrography combined detection method for eight monohydric polyaromatic hydrocarbon in urine. The method comprises the following steps of: (1) respectively transforming the monohydric polyaromatic hydrocarbon and the deuterated monohydric polyaromatic hydrocarbon in a mixed standard solution into corresponding trimethylsiloxy polyaromatic hydrocarbon, carrying out GC-MS (gas chromatography-mass spectrometry) analysis on eight derivative mixed standard solutions; (2) shaking up a urine sample unfrozen under room temperature, and carrying out pretreatment and derivatization on the urine sample, sequentially detecting the content of eight monohydric polyaromatic hydrocarbon in urine sample. The method is suitable for detection and research on biomarkers exposed by polyaromatic hydrocarbon in urine of various common samples, can simultaneously detect eight monohydric polyaromatic hydrocarbon in urine, and has the advantages of being low in detection limit, excellent in stability, simple in pretreatment, rapid and accurate.

The invention discloses a method for detecting residual quantity of 18 sulfanilamide drugs in beef and mutton. The method comprises taking 5g of uniform beef and mutton, adding anhydrous magnesium sulfate, sodium acetate and acetonitrile acetate solutions into the beef and mutton, carrying out high-speed homogenized extraction, carrying out centrifugation, carrying out vortex mixing purification impurity-removal on the supernatant by an adsorbent containing a plurality of purification materials, carrying out pressure reduction or nitrogen blowing condensation on the supernatant subjected to re-centrifugation until drying, redissolving the residues, after shaking-up, filtering the solution by a microfiltration membrane with pore sizes of 0.22 micrometers to obtain a sample solution, carrying out separation by a reversed phase column filled with C18 as a filler, carrying out ultraviolet light on-line rapid derivation, carrying out detection by a fluorescence detector, carrying out qualitative analysis according chromatographic peak retention time, carrying out quantification by an external standard method and calculating residual quantity of 18 sulfanilamide drugs in beef and mutton. The method has simple processes, utilizes less amount of a reagent, has high detection sensitivity, releases simultaneous rapid detection of 18 sulfanilamide drugs by one step, greatly shortens analysis time and has a good application prospect.

The invention relates to the field of detecting potash water glass, in particular to a method for quickly measuring the potash water glass for fluorescent powder. The method comprises the following steps of: 1) accurately weighing the potash water glass, and shaking up the potash water glass uniformly to obtain solution of the potash water glass; 2) adding a methyl red indicator into the solution; 3) titrating K2O by using solution of hydrochloric acid until the K2O turns red from yellow, and measuring the content of the K2O, wherein the solution is also used for measuring SiO2; 4) adding sodium fluoride into the solution, namely adding the sodium fluoride into the solution after measuring the content of the K2O, and dissolving the sodium fluoride to ensure that the solution turns yellow; 5) titrating silicon dioxide, namely adding standard solution of the hydrochloric acid when the solution turns red; 6) titrating the excessive hydrochloric acid by using the standard solution of sodium hydroxide until the solution turns yellow; and 7) performing a blank experiment, namely adding the standard solution of the hydrochloric acid, and performing the titration slowly by using the standard solution of the sodium hydroxide until the solution turns yellow. The method can quickly and accurately measure the silicon dioxide and the modulus in the potash water glass for the fluorescent powder.

The invention relates to a method and equipment for collecting venous blood. The method for collecting the venous blood comprises the following steps of: 1, automatically distributing blood collection tubes; 2, automatically detecting the blood collection tubes to ensure that the blood collection tubes for a patient are qualified so as to eliminate the situations of blood collection failure and repeated blood collection; 3, automatically collecting the blood, wherein the equipment has a seat adjusting function, an entertainment video playing function, an illuminating ray adjusting function, an automatic pressure pulse function, a needle tube positioning function, an automatic tube replacing/supplementing function, and a destination judgment/blood collection fault alarming function; 4, destroying a blood collecting needle; 5, shaking up; 6, transferring samples of blood on a tube rack corresponding to the patient, or entering an automatic flow line, and then directly testing the items which needs to be tested in a medical advice; and 7, repeating the steps 2 to 6, and finishing collection of the venous blood of the different patients. The invention provides the equipment for collecting the venous blood at the same time.

The invention discloses a green juglans regia high-efficiency washing device. The green juglans regia high-efficiency washing device comprises a bottom plate, wherein a left vertical plate and a rightvertical plate are vertically and fixedly mounted on the bottom plate; top plates are respectively, horizontally and fixedly mounted at the top of the left vertical plate and the top of the right vertical plate; a rotating wheel is arranged on the top plates; a left gear which is in meshing connection with a left rack is arranged on the left side of the left rack, and a right gear which is in meshing connection with a right rack is arranged on the right side of the right rack; each pressing plate is rotatably connected to a corresponding extending plate; and scraping hairs propped to the sidewall of a lifting basket are arranged on the right side wall of the pressing plate. According to the green juglans regia high-efficiency washing device disclosed by the invention, through the rotation of a brush disk, green juglans regia is washed rotatably; when the brush disk moves downwards, the lifting basket moves upwards, so that the pressing force of the brush disk to the green juglans regia is strengthened, and the washing effect is further improved; the washing stability is improved by the deformation of a damping spring; besides, the green juglans regia in the lifting basket can shake up and down by the up-and-down reciprocating movement of the lifting basket, so that sundries on the surface of the green juglans regia can be quickly separated, and the washing effect and the washing speed of the green juglans regia are greatly improved.

The invention discloses a dendrobe orchid initial embryo breeding method. First, a dendrobe orchid capsule of which the embryo is ripe and the seed pod is indehiscent is collected, washed by 70 percent of ethanol for 1min-2min, then is dipped by 10 percent of supernatant fluid of calcium hypochlorite for 20min, and then washed by sterile water for twice to four times; then the embryo is taken out by cutting the fruit skin; finally the embryo is planted in the sterilized culture medium for culturing. The embryo can be dipped in the sterile water for shaking up, the embryo with water is aspirated by a sterile sucker and evenly dripped into the culture medium in the microsphere way, and the embryo can also be evenly splashed on the surface of the culture medium in a powder shape. The sterile culture medium is adopted to perform sterile insemination to the embryo of the dendrobe orchid, the embryo bourgeons to form a stem and a bud, and then forms a completed plant through multiplication and rootage. The dendrobe orchid initial embryo breeding method has strong operability, simpleness and practicality, fast breeding, small difference among plants and regular seedling.

The invention discloses valerian preparation, which consists of valerian volatile oil, beta-cyclodextrin, valerian extract powder, starch for pharmaceutical, ethanol, magnesium stearate and talcum powder. A preparation method comprises the steps: A. adopting fresh valerian rhizomes, washing off mud and directly performing distillation through water-jacket pressurized steam after draining the valerian rhizomes to obtain the volatile oil and decoction dregs, B. drying the decoction dregs, placing the decoction dregs, using fresh medicinal materials to percolate the decoction dregs, filtering percolation liquid, recovering ethanol and then performing concentration to obtain the valerian extract powder, C. adding beta-cyclodextrin of the volatile oil into distilled water to be shaken up, then adding the valerian volatile oil to perform lapping and inclusion, using petroleum ether to wash off volatile oil which is not included and performing drying to obtain beta-cyclodextrin inclusion powder of the valerian volatile oil, and D. mixing the beta-cyclodextrin inclusion powder of the valerian volatile oil and the valerian extract powder to be filled into capsules. The valerian preparation is safe, effective, controllable and stable, has remarkable effects of resolving tetany, relieving pain and tranquilizing and soothing the nerves on digestive tract smooth muscles and can be used for treating smooth muscle spasmodic pain.

The invention relates to the mensuration method for amorphous Fe in soil, in particular to leach the soil with hydroxylamine for amorphous Fe and then mensurate it adopting the Visible spectrophotometry method. The specific steps are as follows: adding hydrochloric acid solution and hydroxylamine hydrochloride solution to the soil sample, churning for 30 - 60 seconds and placing at room temperature for 1-2 hours before filtration; Taking 5-20 ml filtered extract solution and adding 1.00-2.00 ml hydroxylamine hydrochloride solution and shaking up, and laying aside for 5-10 minutes to make the Fe(III) completely deacidized to Fe(II), and then adding sodium acetate solution to modify the PH value of the solution to 3-6, and adding a visualization reagent phenanthroline and shaking up the solution and laying aside at room temperature for 30-40 minutes for developing color, at last mensurating the contents of amorphous Fe in the soil sample on spectrophotometer with a wavelength of 520mn. The method of the invention is simple and easy to be promoted. The analysis method is fast and precise in realizing the mensuration of the amorphous Fe in soil.

The invention specifically relates to a method for rapid detection of hexavalent chromium ions in sewage, which belongs to the field of detection of metal ions. The method comprises the following steps: adding 100 ml of distilled water or deionized water into a wash bottle; sequentially adding 1 ml of 1+1 sulfuric acid and 1 ml of 1+1 phosphoric acid and shaking up an obtained mixture; adding 4 ml of a prepared diphenylcarbazide solution and shaking up an obtained mixture; adding 100 ml of distilled water or deionized water and shaking up an obtained mixture for usage in subsequent detection; taking 2 to 5 ml of a water sample to be detected, adding 2 to 5 ml of a hexavalent chromium ion detection reagent with a wash bottle, shaking up an obtained mixture, observing the color of mixed liquor and determining the range of the content of chromium ions in detection liquid by observing whether the mixed liquor has a color or by observing the color which the mixed liquor displays. Application of the method provided in the invention for detection of hexavalent chromium ions enables detection time to be saved and on-site detection to be realizable; the method has the advantages of simpleness, easy operation and strong practicality.

The invention discloses a preparation method for chrysanthemum synthetic nanometer zero-valent iron suspension liquid. The preparation method comprises the following steps of (1) soaking dry chrysanthemum in water at the temperature of 40-90 DEG C for 10-180 minutes under the condition that the proportion of the chrysanthemum to the water is 5-25 grams to 1 liter, and adding alcohol in the mixture of the chrysanthemum and the water under the condition that the proportion of the water and the alcohol is 1: (0.001-0.1) so as to obtain primary chrysanthemum liquor; (2) primarily filtering the chrysanthemum liquor by using a sieve of which the meshes are not lower than 200; (3) performing vacuum filtering on the chrysanthemum liquor by a sieve with the meshes not smaller than 0.49 micrometer so as to obtain a chrysanthemum extract; and (4) adding ferric salt water liquor with the molar concentration of 0.30-0.60M in the chrysanthemum extract under the condition that the volume ratio is 1: (0.1-1), mixing the ferric salt water liquor and the chrysanthemum extract, and shaking up to obtain the zero-valent iron suspension liquid. The preparation method is economical and environment-friendly; the cost of a product is low; and the prepared suspension liquid is high in quality and high in stability.