82results about How to "Speed up digestion" patented technology

The invention provides a sample digestion processing device, which comprises a frame, a heater and a solvent supply mechanism, wherein the heater is provided with more than one test tube accommodating hole; test tubes can be arranged in the test tube accommodating holes; the solvent supply mechanism is provided with a feeding nozzle which is arranged above the heater, can move transversely and / orlongitudinally in the horizontal plane, and is connected with a solvent storage chamber; and the heater and the solvent supply mechanism are respectively arranged on the frame; a test tube bracket isarranged on the heater; through holes corresponding to the test tube accommodating holes of the heater is formed on the test tube bracket; the heater comprises a heat-insulating tank body, and a heatconducting body arranged in the heat-insulating tank body; the test tube accommodating holes are formed on the heat conducting body; and the test tubes are arranged in the test tube bracket and the test tube accommodating holes. In the sample digestion processing device, the solvent is fed by the solvent supply mechanism, the sample is digested not by a manual wet digestion method, and the devicecan realize the quick digestion processing of quantitative solvents and samples added into the test tubes.

The invention discloses a feed for the late-stage fattening and lactation promoting of livestock / poultry and ruminants. The feed is prepared from 80-99 parts by weight of oil and grease and 1-20 parts by weight of additives and is characterized in that the oil and grease are emulsified animal oil and / or emulsified vegetable oil, and the additives are one or more of vitamins, amino acids, enzyme preparations and mineral substances. The invention further provides three preparation processes corresponding to formulae so as to efficiently and stably obtain required feed products. According to the feed, the ingredients are scientific in proportioning ratio, balanced in nutrition and easy to digest and absorb, so that the labor intensity for farmers is reduced greatly, the effect on the fattening and lactation promoting of the livestock / poultry and ruminants at the late stage of growth is good, and the economic benefit of various feeding can be increased remarkably.

The invention discloses a process of preparing modified starch by a mill mechanochemical method, and the method: in a ball-mill kettle, using ball-mill mediums to mill starches dispersed in ball-mill liquor into powder, where the ball-mill kettle is a ceramic or plastic kettle, the ball-mill mediums are made of one or many ones of different-diameter ceramic or agate balls, and the ball-mill liquor is anhydrous alcohol. The invention remarkably changes the crystal structure of starch from polycrystalline state to amorphous state to cause the molecular weight distribution and the content of straight and branched chains, thus changing starch gelatinating property, rheological property, etc, and giving the starch special properties: good soluability, high water absorptivity, sensitive bioreaction activity, having low-viscosity high-solid content glue system, etc.

This invention discloses a method for treating dangerous As-containing wastewater with composite functional bacteria. The composite functional bacteria are obtained by: mixing Desulfovibrio Sp., Desulfotomaculum Sp. and Bacillus megaterium Sp. at a number ratio of (20-65):(15-55):(5-10), and culturing in a culture medium containing Fe, S, C, N and P in anaerobic environment at 30-37 deg.C and pH 7.0-7.4 for 33-38 h. The method comprises: adding the composite functional bacteria and As-containing wastewater (pH = 2.5-9.0, and As concentration = 0.7-6140 mg / L) at a volume ratio of (1-6):1000 into a bioreactor, mixing, stirring for 5-60 min, precipitating in a precipitation pool, and filtering. The method has such advantages as simple process, short treatment period, small floor area, low energy consumption, and no secondary pollution.

The invention belongs to the field of foods, and particularly relates to a protein and probiotic composite food with the weight losing effect. The protein and probiotic composite food adopts probiotic and protein as main raw materials and is prepared by adding dietary fiber, prebiotics, auxiliary functional factors, vitamins and mineral substances. The protein and probiotic composite food with the weight losing effect contains the probiotic and can change intestinal flora, increase the number of beneficial bacteria, decrease the number of harmful bacteria and decrease the inflammatory reaction, and therefore the probiotic role on a host is achieved; the composition of enteric microorganisms can be adjusted, and therefore the obesity symptoms can be improved. According to the protein and probiotic composite food, the food not only can rapidly and conveniently provide various nutrients for the human body, but also has the advantages of being high in fiber, low in heat, likely to generate satiety and the like and is an ideal and healthy weight losing helper, the body weight is controlled on the basis of balanced nutrients, the healthy weight losing purpose is achieved, obesity complications are prevented, and therefore the food can be specially provided for the obesity.

The invention relates to a technique for soil-bedded bacteria pig breeding with environmental protection type, which is suitable for the demands of environmental protection type pig breeding in modernized large-scaled hogpens and individual peasant families. Both traditional and modern pig breeding improve productivity, as well as bring in plentiful excrements that are difficult to be handled, and also cause serious environmental pollutions. In the environment, pig cultivation will result in diseases to the pigs and antibacterial is used too much, which will cause serious residues on pork and serious harm to the environment and human bodies. The invention exerts the soil-bedded bacteria pig breeding technique to realize non pollution of pig breeding. The invention adopts plant and amino acid solution as the nutrient solution, which is mainly used for adjusting the activity of soil-bedded micro-organisms. In particular when the activity of the soil-bedded micro-organisms is decreased, the nutrient solution can improve the activity of the soil-bedded micro-organisms to accelerate degradation and digestion speed of the excretions. The invention adopts fermented saw dusts, wooden pieces and rice hulls to make organic pads, which mixes original seeds, rice husks and saw dusts of the micro-organisms according to a certain proportion, adds a certain quantity of the nutrient solution and amino acid solution, a little lees, chaff and smoke coke to contain 60 percent of water. After fermentation for 3-4 days, the organic pads are made.

The invention relates to the technical field of daily drink processing, and especially relates to a passion fruit health-care wine and a preparation method thereof. The passion fruit health-care wine comprises the following raw materials by weight part: 150-300 parts of passion fruit, 20-40 parts of grosvenor momordica fruit, 15-30 parts of grape, 10-20 parts of dendrobium officinale, 8-15 parts of sweet osmanthus, 6-12 parts of safflower, 6-12 parts of ginkgo, 4-12 parts of fleece-flower root, 3-10 parts of Mythic Fungus, 5-10 parts of ginseng, 5-10 parts of pseudo-ginseng, 2-8 parts of cistanche and 15-60 parts of rock sugar. The passion fruit health-care wine has the advantages of rich mouthfeel and sweet taste, has efficacy or promoting digestion, reducing blood sugar and blood pressure, and is popular by consumers, the preparation method is simple, cost is low, and the method can be popularized.

The invention relates to the technical field of heavy metal detection, and discloses a method for detecting content of heavy metal elements in a bean product. The detection method comprises the following steps of: step 1, selecting a dryer bean product, and drying the bean product; step 2, placing the dried bean product in the step 1 in a crushing barrel, crushing the bean product through a nonmetal grinding roller, quantifying the bean product, and filtering and removing bigger bean product particles so as to sample the bean product; step 3, placing the sample in the step 2 in a beaker, quantitatively adding digestion solution, and closing the beaker; step 4, resting the sample added with the digestion solution for 12h, heating the rested sample, and completely taking out the heated sample; step 5, and placing the taken out sample in a heavy metal detector for detection. According to the method for detecting the content of the heavy metal elements in the bean product, the heavy metalsin the bean product can be detected, and the sample can be detected multiple times so as to improve the detection working efficiency.

The invention discloses a digestive cookie and relates to the food field, and the digestive cookie is prepared by the following weight percent: 20 to 30 parts of yam flour, 10 to 20 parts of hawthorn, 3 to 8 parts of tangerine peel, 10 to 20 eggs, 2 to 5 parts of milk, 15 to 20 parts of butter, 3 to 8 parts of almond slice, and 5 to 10 parts of berry sugar. For bloating and indigestive people, the digestive cookie is edible after a meal, while people with poor appetite eat it before the meal. The digestive cookie is characterized by improving stomach peristalsis, accelerating digestion rate and activating appetite. The digestive cookie has the advantage of delicious taste, thus it is suitable for people at all ages and especially good for children.

The invention relates to a method for treating restaurant and kitchen garbage (commonly known as swill) produced by restaurants and dining halls and high-concentration organic sewage produced in the industrial and agricultural production process. A method for biologically treating the restaurant and kitchen garbage at a high speed comprises the following steps of: pretreating the restaurant and kitchen garbage or the high-concentration organic sewage, removing grease, and performing primary hydrolysis acidification; and performing anaerobic digestion at an ultrahigh temperature by using at least three stages of anaerobic digestion reactors. A system for biologically treating the restaurant and kitchen garbage at the high speed consists of three or more stages of anaerobic digestion reactors; and system engineering has a buried design, and the reactors are arranged underground. By the method and the system for biologically treating the restaurant and kitchen garbage at the high speed, an ultrahigh temperature multi-stage anaerobic digestion process is adopted, the engineering has a buried and tight design, the structure is simple, investment is small, the occupied space is small, the garbage biological treatment effect is good, and good social and economic benefits are achieved during implementation and popularization.

The invention belongs to the field of applied molecular biology, and particularly relates to a virus-like particle containing novel coronavirus nucleic acid as well as a preparation method and application of the virus-like particle. The virus-like particle containing the novel coronavirus nucleic acid contains MS2 bacteriophage coat protein and a recombinant gene S sequence wrapped in the coat protein, wherein the S sequence consists of a novel coronavirus ORF1ab gene segment, a human beta-Globin gene segment, a novel coronavirus N gene segment and an E gene segment which are connected in sequence; and the S sequence has a nucleotide sequence as shown in SEQ ID NO.5. The virus-like particle can be used for whole-course quality control of nucleic acid extraction, amplification and detectionof the novel coronavirus, and can be popularized and applied as a positive control and internal standard quality control product of the novel coronavirus in a kit.

The invention discloses a perishable garbage biological disposal system. The system comprises a garbage pretreatment device, a garbage digestion device and an intelligent environment control device, wherein the garbage digestion device comprises an automatic feeding machine, an insect feeding machine, automatic deodorization equipment, a digestion bed surface, cleaning equipment, disinfecting equipment and automatic discharging equipment; the garbage pretreatment device comprises a barrel turning machine, a grinding machine, a material storage tank and deodorization spraying equipment; and theintelligent environment control device comprises a temperature sensor, a humidity sensor, an illumination sensor and a microcomputer control device. The invention further discloses a method for disposing the perishable garbage based on the perishable garbage biological disposal system. According to the perishable garbage biological disposal system and a method for disposing the perishable garbageby applying the system, a method for disposing the perishable garbage by using hermetia illucens is large in disposal capacity, short in disposal time and low in cost, so that the perishable garbageis digested, the objective of making perishable garbage be transformed into feed is achieved, economic benefits are increased, and sustainable development is facilitated.

The invention discloses in-situ ecological living water equipment which comprises a circulating living water device, a micro-nano aeration device and a reagent dosing device, wherein the circulating living water device sequentially comprises a top cover, a driving device and an impeller with a plurality of blades from top to bottom; the driving device is used for driving the impeller to rotate; the micro-nano aeration device is connected to the lower side of the circulating living water device and sequentially comprises a flow divider, at least one dissolved air tank and a double entry pump from top to bottom; the reagent dosing device is arranged at the top of the driving device of the circulating living water device; a drug inlet is formed in the tail end of a second water inlet of the double entry pump; the drug inlet is connected with the reagent dosing device; and reagents in the reagent dosing device enter the micro-nano aeration device via the drug inlet under the action of a negative pressure produced by the double entry pump. According to the device disclosed by the invention, vertical circulating convection of a water body can be rapidly realized, uniform high-density micro-nano bubbles are generated to promote oxygen dissolving, and water treatment reagents are uniformly dispersed in the water, so that water body pollution is treated.

The invention discloses toadstool chicken soup and a making method thereof. The toadstool chicken soup is prepared from chicken, toadstool, tricholoma matsutake, agrocybe cylindracea, medlar fruits, red dates, lotus seeds, mushroom, bamboo shoots, fresh ginger, anise, garlic, pepper, salt, cooking wine, agar, rusk and purified water; the making method comprises the steps of 1, raw material preprocessing: 1.1, chicken processing; 1.2, ingredient processing; 2, making chicken soap: 2.1, precooking; 2.2, adding ingredients for cooking; 2.3, removing oil; 2.4, performing sterilizing and packaging.The toadstool chicken soup has the advantages that the fat content is low, nutrients are high, absorption is easy, and body fat cannot be caused after a user eats the soap for a long time; in addition, the making method has the advantages of being simple in making procedure and short in consumed time.

The invention relates to a determination method of the protein content in foodstuff in the technical field of food detection, comprising the following steps of: digesting a sample by using a digestive juice of hydrogen peroxide and concentrated sulfuric acid so as to obtain a mixed solution; taking the mixed solution, using methyl red as an indicator, and adding a NaOH aqueous solution; adding a formaldehyde solution, shaking, adding a phenolphtalein indicator, titrating by the use of a NaOH aqueous solution at the concentration of C until the mixed solution shows reddish and does not fade in color within half a minute, recoding the volume V of the consumed NaOH aqueous solution, and calculating the protein content by the use of a formula. The digestive juice used in the method can help accelerate the digestive speed of the sample, shorten the digestive time and accelerate the analysis speed; in addition, the formaldehyde method is adopted for titration so as to simplify the operation.

The invention discloses a convenient-to-move breeding device which comprises a base. The top of the base is fixedly connected with a rack, a push plate is fixedly connected on each of two sides of thetop of the rack, one sides, close to each other, of the two push plates are fixedly connected with a driving motor, the bottom end of an output shaft of the driving motor penetrates the top of the rack and extends to an inner cavity of the rack, the surface of the output shaft of the driving motor is rotatably connected with the inner surface of the rack, and the bottom end of the output shaft ofthe driving motor is fixedly connected with a first rotating shaft through a coupler. The invention relates to the technical field of breeding devices. The first rotating shaft is driven by the driving motor to drive the second rotating shaft to rotate so as to drive a driving wheel to move, the device can move during feed stirring and discharging, and three steps are performed at the same time,so that working efficiency of the breeding device is improved greatly, multifunctionality of one motor is realized, and manufacturing cost of the breeding device is lowered.

The invention discloses a preparation method of skin fibroblasts, and belongs to the technical field of biological cells. The preparation method of the skin fibroblasts comprises the following steps of: S01, specimen treatment: treating a skin specimen, and removing adipose tissues and connective tissues; S02, separation: treating the treated specimen with neutral protease, and removing epidermis to obtain dermis tissues; S03, digestion: digesting the dermis tissues by using pancreatin to obtain tissue fluid; S04, centrifugation: centrifuging the tissue fluid, and removing supernatant to obtain a cell suspension; S05, culture: transferring the cell suspension into a culture dish, adding a culture solution, and culturing; and S06, passage: culturing until the fusion degree is 75-85%, and performing passage culture. The preparation method disclosed by the invention has the advantages of simple steps, low possibility of pollution, a high cell survival rate, a good purification effect and small cell loss.

The invention relates to coarse cereal Fuzhuan tea biscuits having the functions of invigorating the stomach and promoting digestion and a making method of the coarse cereal Fuzhuan tea biscuits having functions of invigorating the stomach and promoting digestion, and belongs to the technical field of food processing. The coarse cereal Fuzhuan tea biscuits having the functions of invigorating thestomach and promoting digestion comprise the following raw materials in parts by mass of 30-50 parts of whole wheat flour, 20-30 parts of oat flour, 20-30 parts of black rice flour, 10-30 parts of coix seed powder, 10-30 parts of Chinese yam powder, 10-30 parts of corn flour, 10-30 parts of purple sweet potato powder, 8-10 parts of camellia oil, 10-15 parts of Fuzhuan tea powder, 50-70 parts of mixed scented tea juice, 15-25 parts of maltitol, 10-20 parts of egg liquid, 3-5 parts of yeast, 10-20 parts of butter, 10-20 parts of honey, 3-5 parts of table salt and 20-40 parts of water. The biscuits are complete in shape, uniform in thickness, brown yellow in color, high in surface gloss sense and uniform in the size of air holes in section, have rich food grain scent, also have light tea fragrance, are crisp in mouth feel, conform to the taste of common people, are high in nutrient value, can promote digestion for resolving food stagnation, promote metabolism, promote digestion and guarantee organisms balanced, are favorable for health, are free from hazardous substances of preservatives and the like, and are green and healthy.

The invention discloses a method for simultaneously reducing municipal sludge and producing hydrogen, and a municipal sludge treatment device. The method comprises the following steps: mixing the municipal sludge with polyoxometallic acid to obtain a polyoxometallic acid-containing sludge slurry; and sending the polyoxometallic acid-containing sludge slurry to an electrolysis tank, and applying adirect current to carry out electrolysis in order to obtain hydrogen and sludge with a reduced content of volatile solids. The method utilizes the oxidation and hydrolysis effects of the polyoxometallic acid on microbial cells to decompose the microbial cells in the sludge in order to simultaneously realize great reduction and hydrogen production. Compared with methods for treating municipal sludge based on an MFC or MEC technology, the method in the invention is free from the limitation of the temperature, the pH value and other parameters in a pretreatment stage on conventional biochemical treatment methods, can be started directly without domestication and cultivation of microorganisms, and can get a higher sludge digestion rate and a higher hydrogen production efficiency with less energy consumption.

The invention belongs to the technical field of steel slag resource utilization, and particularly relates to a steel slag waste heat comprehensive utilization and f-CaO graded digestion method which comprises the following steps: mixing and adding a steel slag modifier into molten steel slag; carrying out centrifugal granulation on the steel slag; waste heat of the steel slag is absorbed through cold air and water, and hot air and water vapor are generated; heating water through the hot air to generate water vapor; and performing graded digestion on f-CaO in the steel slag by utilizing flue gas of a steel mill and the water vapor. According to the technological process, high-grade sensible heat is recycled from the molten steel slag, the energy efficiency of the system is improved, CO2 in flue gas of a steel plant is consumed in the f-CaO grading digestion process, and carbon emission of the steel plant is further reduced.

The invention relates to an in-situ ecological running water water-purification device including a circulating running water device, a micro-nano aeration device and a negative ion generator. The micro-nano aeration device includes a shunt, at least one dissolved gas tank and a double-suction pump from up to down successively; the tail end of a water inlet of the double-suction pump is provided with a gas inlet, and the gas inlet of the double-suction pump communicates with the external atmosphere through a gas inlet pipe; a water inlet of the shunt is connected with a water outlet of the double-suction pump; at least two water outlets are arranged at the top of the shunt, at least one water outlet of the shunt is connected with the dissolved gas tank through a water inlet of the dissolvedgas tank; at least one group of turbulent flow blades is arranged at the water inlet of the dissolved gas tank and inside the dissolved gas tank; a venturi tube is arranged at a position of a water outlet at the bottom of the dissolved gas tank, and a liquid in the dissolved gas tank is discharged into a water body through the venturi tube. The device can quickly realize three-dimensional circulation convection of the water body, and uniform high-density micro-nano bubbles are generated to promote oxygen dissolving and purify the water quality.

The invention discloses a preparation method for a musa basjoo compound fruit and vegetable beverage. The preparation method comprises the following steps: (1) peeling off musa basjoo, protecting the color and pulping to prepare musa basjoo digested liquid by a digestion method; (2) squeezing carrots, celeries and passion flower flesh to respectively obtain carrot juice, celery juice and passion flower juice; (3) mixing the musa basjoo digested liquid, the carrot juice, the celery juice and sucrose according to a certain weight ratio; adding pure water; boiling and cooling to be lower than 50 DEG C; and adding the passion flower juice, and sufficiently mixing with less carboxymethylcellulose and xanthan gum to obtain mixed liquid; and (4) homogenizing the mixed liquid, and degassing and sterilizing to obtain the musa basjoo compound fruit and vegetable beverage. The musa basjoo compound fruit and vegetable beverage disclosed by the invention is a natural green beverage prepared by taking the musa basjoo as a raw material in combination with other fruits and vegetables; the musa basjoo compound fruit and vegetable beverage has abundant nutrition and has good color, aroma and taste.

The invention belongs to the technical field of feed, and particularly discloses feed for cattle and a method for preparing the feed. The feed is prepared from large-leaf fast-growing sophora japonica, bean pulp, fatty acid calcium, radix astragali, radix angelicae sinensis, pericarpium citri reticulatae, semen arecae and flavoring agents. The feed for the cattle and the method have the advantages of good palatability, high ingestion ratio, easiness in digestion and absorption, short fattening period and obvious daily weight gain effect.

The invention relates to a high pressure reactor, specifically to an anticorrosion high pressure reactor. The anticorrosion high pressure reactor comprises an outer shell and an inner container. The inner container is arranged inside the outer shell and the inside of the inner container is a cavity for containing a sample. The anticorrosion high pressure reactor is characterized in that the inner container contains a top inner-container cover and a lower inner-container tank, wherein the top inner-container cover is sealed and plugged at the top of the lower inner-container tank, and axial cross section of the cavity formed by the top inner-container cover and the lower inner-container tank is oval. By the adoption of the high pressure reactor for digestion and under high pressure, the tank effectively realizes a self-sealing effect, an inner tongue depressor and an outer tongue depressor of the top cover are wedged into a taper of the lower tank so as to be sealed. The more pressure, the sealing effect is better. Thus, high-pressure acid leakage problem is solved thoroughly. The inside of the tank is designed in an oval or round shape, making steam form an effective convection and accelerating migration of steam. Thus, digestion efficiency and effect are raised. The anticorrosion high pressure reactor designed in the patent is simple, practical and effective, and achieves sealing effect and high efficiency of sample digestion.

The present invention discloses a pure Chinese medicine microbial fermenting agent and its preparation method. It uses 40-odd Chinese natural plant medicinal materials as raw material and adopts the following procedures: pulverizing raw materials, diluting, mixing the above-mentioned powdered raw materials with the mixture of wheat bran, oil cake and brown sugar and stirring them, sealing and culturing for several hours at room temp. to obtain the invented Chinese medicine microbial fermenting agent for animal feed. It can be used for producing nuisance-free pollutionless green meat, foul, egg and milk products.

The invention discloses an ICP-MS (inductively coupled plasma mass spectrometry) rapid detection method to measure lead and total arsenic in soybean sauce at same time, comprising the steps of (1) digesting a sample; (2) detecting with an ICP-MS instrument. The method of the invention has the advantages that chemical reaction conditions are improved, digestion of the sample is accelerated, detection time is shortened, and detection efficiency is improved; the method provides closed and low temperature conditions, rarely causes volatilization loss and mutual pollution interference, is simple, reliable and efficient to perform and has good digestion effect, high detection precision and high accuracy; residual liquid from sample pretreatment is free of heating or emptying, the residual liquidis recycled directly, and low environmental pollution is caused; many samples can be pretreated at a time; reagent consumption is low, equipment power consumption is low, and detection cost is low.

The invention discloses a digestion system utilizing waste heat and a temperature control method thereof. The digestion system comprises a heat exchanger, a hot water storage tank, a digestion slot, a first temperature control solenoid valve, a first temperature sensor and a first PID (proportion integration differentiation) controller, wherein the heat exchanger is used for heating cold water by utilizing waste heat; the hot water storage tank is connected with a hot water outlet of the heat exchanger, and is used for storing heat-exchanged hot water; the digestion slot is connected with the outlet of the hot water storage tank and used for receiving hot water and digesting lime; the first temperature control solenoid valve is connected at a cold water inlet of the heat exchanger; the first temperature sensor is used for sensing a temperature signal at a hot water inlet of the hot water storage tank; and the first PID controller is connected with the first temperature control solenoid valve and the first temperature controller, and used for receiving a temperature signal of the first temperature sensor and regulating flow opening of the first temperature control solenoid valve to regulate water amount of cold water which enters the heat exchanger. The digestion system is used for recycling tail gas waste heat and keeping the stability of the hot water storage tank and a digestion temperature by virtue of intelligent regulation to guarantee that the waste heat is utilized to the greatest extent, and the digestion quality is improved.

The invention provides a method for determining rare earth elements in a super-based rock by ICP-MS. The method comprises the following steps: accurately weighing a powder sample and putting the powder sample into a sample dissolving bomb; adding high-purity nitric acid and high-purity hydrofluoric acid in sequence; putting the sample dissolving bomb into a steel sleeve, screwing and putting the sample dissolving bomb into a drying oven for heating; after the sample dissolving bomb is cooled and the cover is opened, putting the sample dissolving bomb on an electric heating plate and evaporating to dryness; adding nitric acid and evaporating to dryness again; adding high-purity nitric acid and ultrapure water; putting the sample dissolving bomb into the steel sleeve, screwing and putting the sample dissolving bomb into the drying oven for heating; putting the sample dissolving bomb on the electric heating plate and evaporating to dryness; adding hydrochloric acid and evaporating to dryness again; adding hydrochloric acid and dissolving; centrifuging the sample by utilizing a centrifugal machine; taking supernatant and putting the supernatant on a column; adding hydrochloric acid towash the column and adding hydrochloric acid to connect the sample; after evaporating the sample to dryness, adding nitric acid; after evaporating to dryness again, adding nitric acid and fixing the volume; finally, determining the content of the rare earth elements in the sample by ICP-MS. According to the method provided by the invention, the ultralow-low-content rare earth elements in the super-based rock can be effectively detected; an obtained rare earth partition curve is smooth in distribution and a detection result is accurate and reliable.