240results about How to "Short storage time" patented technology

The invention relates to a face recognition method based on Gabor wavelet transform and local binary pattern (LBP) optimization. Two-dimensional Gabor wavelet transform can associate pixels of adjacent areas so as to reflect the change conditions of image pixel gray values in a local range from different frequency scales and directions. The feature extraction and the classification recognition are carried out on the basis of a face image two-dimensional Gabor wavelet transform coefficient. For a high-dimensional Gabor wavelet transform coefficient, overall histogram features are extracted by adopting the LBP, and then the image is blocked by utilizing priori knowledge to extract the features of each piece of LBP local histogram. The method has better recognition rate, better robustness to illumination and wide using prospect in the fields of biometric recognition and public security monitoring.

The invention relates to a circuit (20, 50) for voltage stabilization in an onboard power supply (10), particularly for motor vehicles, which is electrically connected between the onboard power supply (10) to be stabilized and a first energy store (E1). The circuit (20, 50) comprises a diode element (24) which contains a plurality of semiconductor switches (34) connected in parallel, a pilot and control circuit (33) which determines the level of a current flowing through the diode element (24) and controls the semiconductor switches (34) of the diode element (24) on the basis of the determined current level, and a second energy store (E2) which is electrically connected to the diode element (24) and to the onboard power supply (10).

The invention discloses a process for producing hexamethylol melamine, belonging to the field of production and preparation of hexamethylol melamine. The process comprises the steps such as mixing, reaction and crystallization, centrifugalization, evaporation and the like, wherein evaporation auxiliary formate is added when in evaporation so as to change the relative volatility of formaldehyde and water. Furthermore, the process for producing the hexamethylol melamine together with a formaldehyde device can also be used for co-production, so that the concentration of the produced formaldehyde solution is improved to 45wt%-55wt%. The produced hexamethylol melamine provided by the invention has the advantages of small amount of waste water and low formaldehyde content, namely, if 1 ton of hexamethylol melamine is produced, 1 ton of waste water containing 0.84wt% of formaldehyde is discharged. After the process provided by the invention and the formaldehyde device are used for co-production, the formaldehyde production cost and transportation cost are reduced, and the comprehensive cost is 10% less than that of other processes.

The invention belongs to the technical field of medical optometry equipment and especially relates to an intelligent portable hand-held vision screening instrument and an optometry method. The instrument comprises an optometry system, a camera shooting system, an integral control system and a wireless communication system which are connected to a central processing unit, wherein the optometry system is composed of a light source, a diaphragm and a lens and is used for emission of the light source, diaphragm isolation and lens transmission; functions of distance and temperature measurement are achieved through combination of an ultrasonic ranging and a temperature sensor; the optometry system can shoot eye images by an infrared lens and a visible light lens; the integral control system executes different modes including a preview mode, a camera shooting mode and a checking mode; the wireless communication system carries out card reading functions of a social insurance card and a medical service card as well as wireless data transmission; and the central processing unit carries out collection and processing of data, image recognition, gray analysis and diopter computation. The intelligent portable hand-held vision screening instrument is connected to an intelligent medical cloud platform by a wireless communication system.

This invention discloses a method for preparing wet dust-inhibiting agent and its application. The wet dust-inhibiting agent is composed of: polyoxyethylene nonyl phenyl ether OP-4 2-15%, OP-15 4-24%, ethylene glycol 0.5-10%, glycerol 1-10%, sodium dodecylbenzene sulfonate 0.1-5%, and tap water. The method comprises: adding tap water into a reaction kettle, heating to 40 deg.C, adding the raw materials, stirring to completely dissolve, keeping for 30 min, taking out, and packaging. When used, the wet dust-inhibiting agent is diluted with tap water at a ratio of 1 :( 1000-2000), and sprayed by spraying car or specific spraying apparatus onto dust-producing zone such as coal piles and raw material fields.

The invention discloses a groove gate VDMOS device integrated with a Schottky diode and belongs to the technical field of semiconductor devices. According to the groove gate VDMOS device integrated with the Schottky diode, an additional structure composed of a piece of Schottky junction metal and a body electrode conductive material is additionally arranged on each of drift regions on the two sides of a groove gate structure of a conventional groove gate VDMOS device, the upper portion of each piece of Schottky junction metal is in contact with source electrode metal, the lower portion of each piece of Schottky junction metal is in contact with a corresponding body electrode conductive material, and the lower surface and the lateral sides of the each piece Schottky junction metal are in contact with a corresponding drift region to form a Schottky junction; dielectric layers are arranged between the lateral sides of each body electrode conductive material and a corresponding drift region and between the bottom surface of each body electrode conductive material and the corresponding drift region. Compared with a traditional groove gate VDMOS device with the same size, the groove gate VDMOS device integrated with the Schottky diode has the advantages that due to the fact that higher drift region dosage concentration is adopted under the condition of same puncture voltage, turn-on resistance is reduced obviously, and the reverse recovery property of the diode is improved obviously.

The invention discloses an all-purpose preparation method of probiotic fermentation activity pasty feeds for animals, having the steps of: weighing raw materials according to prescription, fermentation base materials mainly comprising raw materials with the following weight percent: corn flour 45-70, bean pulp flour 12-32, rice flour 8-20, wheat flour 0-20, bean powder 0-15; malt 0-8, growth factor 0-0.9; pre-processing fermentation base materials, crushing, extruding and screening; preparing strain of probiotic; inoculating fermentation base materials with seed bacterial liquid, wherein the method comprises the ways of: direct fermentation, namely making paste mash fermentation using seed bacterial liquid, causing moisture content in paste leavening 52-63%; continuous fermentation, converting seed bacterial liquid into paste mash fermentation via liquid state fermentation, using paste leavening as probiotic ferment; adopting gapless packaging bags; standing for fermentation, removing fermentative air, sealing the gapless packaging bags; stopping fermenting; storing by sealing. The inventive feed probiotic is long in storage time, manufacturing quality and effect of the paste leavening are stable.

The invention discloses a pixel driving circuit, a driving method thereof and a display device, and relates to the technical field of display. The problems that dynamic image tail exists in an existing display device, and the experience of a viewer is affected are solved. The pixel driving circuit comprises a driving unit, a capacitor unit, a data writing unit connected with corresponding rows ofgrid lines, corresponding columns of data lines and the driving unit separately, a power control unit connected with a first light emitting control end, a power signal input end and the driving unit separately, and a first light emitting control unit connected with a second light emitting control end, the power signal input end and the driving unit separately, wherein the first light emitting control unit is used for controlling connection between the power input end and the driving unit under the control of the second light emitting control end at the preset period of time in the light emitting stage, the driving unit stops working, and therefore the light emitting unit stops emitting light. The pixel driving circuit is used for driving the light emitting unit.

The invention relates to frozen dough, in particular to frozen fermentation-blank dough. The frozen fermentation-blank dough is made by mixing flour, water, yeast, a compound raising agent, white sugar and dough modifier based on the certain weight ratio, wherein the dough modifier mainly consists of vital gluten, a complex enzyme product, vitamin C, a yeast nutrient and an emulgator. The frozen fermentation-blank dough has abundant and balanced nutrition, low price, and convenience in use, storage and batch-production.

A car parking device of area mobile type is prepared as arranging gallery at middle of said device and parking positions at right and left sides of gallery, setting well path on position of gallery, using comb frame to carry car and setting lift porter in well path, forming lift porter by two halves of comb frame, setting walk porter on gallery, setting broach wheel barrow on walk porter, setting rotation plate in well path, setting broach on rotation plate outwards and symmetrically.

The invention belongs to the technical field of biological materials in tissue engineering and particularly relates to artificial skin and a preparation method thereof. The preparation method comprises the following steps: carrying out cleaning, cutting, disinfecting treatment, degreasing treatment, tissue mashing treatment, acidic enzymolysis, salting out, dialyzing treatment, defoaming treatment, crosslinking treatment, modifying agent treatment, freeze drying and vacuum drying to tendon or leathery skin. The artificial skin provided by the invention not only can be used as a cover for a wound surface of a human body temporarily, but also can retain a leathery skin support for growing and repairing the wound surface permanently, and overcomes the defects, in a conventional artificial skin product, of high price, source limitation, long time for manufacturing, short saving time, and impairs to organism caused by secondary skin-grafting. The artificial skin prepared by the invention is wide in material source, short in production period, long in saving time and low in price, and is suitable for wide application.

The invention discloses a system and a method for treatment and recovery of electronic electroplating wastewater. The system comprises a wastewater recovery and treatment unit and an RO (reverse osmosis) concentrate treatment unit. A grille, an adjusting tank, a coagulation reaction device, a settlement and membrane separation device, an ozone oxidation tank, an ozone digestion tank, a cartridge filter and an RO device are connected to the wastewater recovery and treatment unit sequentially. A hydrolytic acidification tank, a contact oxidation tank and a settling tank are connected to the RO concentrate treatment unit. The electronic electroplating wastewater is treated through the grille, the adjusting tank, the coagulation reaction device, the settlement and membrane separation device, the ozone oxidation tank, the ozone digestion device, the cartridge filter and the RO device. RO fresh water is then reused on an electronic electroplating line. RO condensed water is effectively treated through the hydrolytic acidification tank and the contact oxidation tank and stably meets the primary specification GB8978-1996 of integrated wastewater discharge standard, and discharge requirements DB4426-2001 of discharge limits of water pollutants of Guangdong.

A dual-beam super-resolution optical storage material read-write device comprises an optical path and a computer; the optical path consists of a recording optical path, a reading-out optical path anda fluorescence collecting optical path. A read-write method is provided. The invention adopts pulsed light induction-continuous photoinhibition quenching recording mode, can quickly read information,solves the problem of recording and reading of materials simultaneously for the first time in the field of super-resolution optical storage, overcomes the erasing effect of photochromic materials in super-resolution recording, and obtains smaller recording spots and improve the storage density of optical discs.

The invention discloses carbon fiber reinforced vinyl ester resin SMC (Sheet Molding Compound) prepreg as well as a preparation method and a use method thereof, relates to a short-cut carbon fiber reinforced vinyl ester resin SMC as well as a preparation method and a use method thereof, and aims to solve the problem that processing properties of a conventional glass fiber reinforced sheet molding compound) cannot meet requirements of the automobile industry. The carbon fiber reinforced vinyl ester resin SMC prepreg comprises an upper membrane layer, a core layer and a lower membrane layer from top to bottom in sequence. The preparation method comprises the following steps: I, weighing materials; II, preparing resin paste; III, repeatedly rolling the resin paste by using a pressure roller so as to obtain resin-dipped short-cut carbon fiber; IV, performing thickening and aging, thereby obtaining the carbon fiber reinforced vinyl ester resin SMC prepreg. The use method comprises the following steps: cutting and overlapping the carbon fiber reinforced vinyl ester resin SMC prepreg in a mold, and performing pressure-keeping curing, thereby obtaining a carbon fiber SMC composite material. The carbon fiber reinforced vinyl ester resin SMC prepreg has the advantage that the impact resistance is remarkably improved. The carbon fiber SMC composite material prepared from the carbon fiber reinforced vinyl ester resin SMC prepreg is mainly used as an automobile material.

The invention relates to a preparation method of tissue engineering xenoskin, which adopts a baby pig with rich source as a skin source to obtain the finished product through the steps of taking the skin, fixing the skin, cutting, removing hypodermal cells, modifying three-dimensional collagenic structure, changing physical characteristics and sterilizing and packaging, and the finished product can be stored for more than 2 years under the environment of 2-10 DEG C. The tissue engineering xenoskin is applied to deep burn and defect of skin, has the functional characteristics of low immunogenicity, compact adhesion on wound surface, and moisture maintenance, can be used as a protection wound surface of a provisional wound surface cover of a human body, and can also be used as a growth repair wound surface of permanently remaining corium bracket. The invention solves the defects of high cost, limit source, long fabrication time, short storage time and organism hurt by secondary skin-grafting in the prior artificial skin product. The prepared product material has wide material source, short product period, short storage time and low cost, and is widely applied to the clinic.

The invention discloses a sheep feed and a preparation method thereof, and belongs to the technical field of feed preparation. The feed comprises the following raw materials: pumpkin powder, potato vine powder, straw powder, bean cakes, pomacea canaliculata powder, betaine, table salt, Chinese material medicine preparations, vitamins, micro elements, bacterium preparations and enzyme preparations. The feed is prepared through the following steps: baking the raw materials, crushing the baked raw materials, screening the crushed raw materials, mixing the screened raw materials, sterilizing the mixed raw materials, cooling the sterilized raw materials and the like. The feed is reasonable in formula, rich in nutrition, can sufficiently meet growth requirements of sheep, promotes the healthy growth of the sheep, and shortens the growth cycle. The sheep feed disclosed by the invention, combines the efficacies of varied traditional Chinese medicines, so that the sheep feed can have the effects of resisting bacteria, diminishing inflammation, clearing heat and removing toxicity, enhancing organism immunity, and the like, and can enhance the disease resistance of the sheep, so that the attack rate is reduced by 7.5%-8.33%, and the mortality rate is reduced by 5.84%-6.67%.

The invention relates to the field of food production, particularly to a production method of instant pork chops and solves the problem that preservatives are added to the instant pork chops to prolong expiration dates and the instant pork chops do not taste fresh, tender or delicious. The instant pork chops are long in shelf time and taste delicious. The production method of the instant pork chops comprises the steps as follows: ingredient selection, precooking, adding and stirring, frying, and roasting. The production method is simple, and the instant pork chops contain little fat, taste fresh, tender and delicious and are good in elasticity.

The invention discloses a phosphogypsum cement retarder and a preparation method thereof. The cement retarder is prepared from the following raw materials in percentage by weight: 90-95% of phosphogypsum, 2-5% of alkaline calcium-increase agent and 0.5-2% of modifier. The preparation method comprises the following steps: screening the raw materials, filtering, calcifying, calcining and drying under reflux, balling and granulating, and the like. In the invention, the raw material from the discharge port of the chemical industry enterprise is directly connected into the production line, and the phosphogypsum slag is modified for production, thereby avoiding the phosphogypsum stock and environmental pollution, maximally and fully utilizing the phosphogypsum raw material and recycling the effective phosphorus. When being used for producing cement, various properties of the phosphogypsum cement retarder are better than those of natural gypsum, thereby utilizing the waste, protecting the environment, greatly lowering the discharge treatment cost of the chemical industry enterprise, and greatly enhancing the economic benefit of the cement production enterprise.

The invention discloses a pig feed and a preparation method thereof, and belongs to the technical field of preparing feeds. The feed comprises the following raw materials of rice bran, potato vine powder, nepenthes powder, bean cakes, pomacea canaliculata powder, betaine, table salt, traditional Chinese medicine preparations, vitamins, trace elements, bacterium preparations and enzyme preparations. The feed is prepared through the following steps of drying the raw materials, crushing the dried raw materials, screening the crushed raw materials, mixing the screened raw materials, sterilizing the mixed raw materials, cooling the sterilized raw materials, and the like. The feed is reasonable in formula, is rich in nutrition, can sufficiently meet the growth requirements of pigs, promotes the healthy growth of the pigs, and shortens the growth cycle of the pigs. The feed disclosed by the invention synthesizes the efficacies of various traditional Chinese medicines, can have the effects of resisting bacteria, diminishing inflammation, clearing heat, removing toxicity, strengthening the immunity of organisms and the like, can strengthen the disease resistance of the pigs, effectively prevents the attack probability, reduces the mortality rate, and improves the economic benefits of breeding households.

The invention belongs to the technical field of protection of ancient books, and discloses an ancient book processing liquid and an ancient book processing method. The ancient book processing liquid comprises an inorganic base liquid prepared by dissolving or dispersing an inorganic base in water and a quaternary ammonium salt liquid prepared by dissolving or dispersing a quaternary ammonium saltcompound in water. The ancient book processing method is as follows: clearing an impurity of the ancient book, processing at the constant temperature at the constant humidity, drying, and putting in closed deacidifying equipment, the inorganic base liquid and the quaternary ammonium salt liquid are atomized and introduced into the deacidifying equipment to process a paper sample, then the paper sample is dried and placed at the environment temperature to finish processing. The ancient book processing liquid and the ancient book processing method have the multifunctional processing effects of deacidifying, reinforcing, and inhibiting bacteria.

The invention belongs to the technical field of fruit and vegetable fresh keeping and in particular relates to a physical honey peach storage method. The physical honey peach storage method mainly comprises the following steps: (1) selecting peaches and dissipating heat in a room at the temperature of 20 to 25 DEG C after the honey peaches are picked within 5 hours; (2) performing heat shock treatment on the selected honey peaches at the temperature of 53 to 55 DEG C for 8-12 minutes, and rapidly taking the honey peaches subjected to heat shock treatment out; (3) dissipating heat of the honey peaches subjected to the heat shock treatment in an indoor environment at the temperature of 20 to 25 DEG C; (4) performing unsealed package on the honey peaches by using polyamide film and polyethylene film composite bags; and (5) storing the packaged honey peaches in an air-conditioned cold store at the temperature of 8 to 10 DEG C, regulating the temperature of the air-conditioned cold store to be 2 to 4 DEG C after adapting to a low temperature, and continuously performing cold storage, wherein the volume rate of gas in the air-conditioned cold store is as follows: the N2 content is 86 percent, the O2 content is 4 percent and the CO2 content is10 percent, and the humidity is controlled to be 80-90 percent. The invention aims to provide the physical honey peach storage method which is convenient to operate, safe, high-efficiency, good in storage effect and long in storage time.

The invention relates to a method for emulsification continuous feeding of a heavy oil weight catalytic cracking raw material, comprising the following steps of: mixing and emulsifying the catalytic cracking raw material, a compound emulsifier and water; and directly introducing emulsified emulsifying oil into a catalytic device for catalytic reaction, wherein the emulsifying is carried out at normal pressure and the temperature of 50-95 DEG C, the water adding quantity accounts for 1-15% of the mass of the emulsifying oil, the adding quantity of the compound emulsifier accounts for 0.01-2% of the mass of the emulsifying oil, and the stirring speed is more than 15,000r / min. In the invention, the emulsified emulsifying oil as the catalytic raw material is directly introduced into the catalytic device for catalytic reaction without utilizing a buffer oil tank in the middle process, the dwell time after emulsification is short and the emulsion breaking problem is unavailable. After the heavy oil catalytic cracking raw material is emulsified, the dispersity and the atomization degree of the catalytic cracking feeding are improved, the atomization efficiency is enhanced, the particle diameter of feeding oil drop is greatly reduced, an oiling agent is ensured to be effectively contacted, the cracking depth is increased, and the purposes of enhancing the yield of light weight oil and the total liquid yield and reducing the yield of coke can be achieved.

The invention relates to a natural rubber latex anticoagulating and antistaling agent and a preservation method thereof. The natural rubber latex anticoagulating and antistaling agent comprises sodium bisulfite, butyl p-hydroxybenzoate, sodium carbonate, sodium methasilicate pentahydrat, citric acid, and sodium benzoate. After compounded according to a certain weight ratio, each raw material is added into 1000-1500 parts of natural rubber latex all for one time, and after uniform stirring and dissolution, the mixture only needs to be stored in a prepared container. The anticoagulating and antistaling agent of the invention is characterized by no ammonia, no irritating effect, health and nontoxicity as well as no toxic and side-effect on human body. And on the other hand, compared with ammonia antistaling agents, the antistaling agent in the invention reduces acid consumption for subsequent processing of rubber. The anticoagulating and antistaling agent provided in the invention has the advantages of wide raw material sources, low price, simple manufacturing process, convenient usage, good effect, long preservation time, good quality of rubber latex after application of the agent, and high dry rubber content.

The invention discloses a production method of a white low-fat odorless and salt-free edible silkworm pupa protein powder. The method comprises the following procedures: fresh wet or dry silkworm pupa, tussah pupa or caster silkworm pupa is excorticated after being broken and separated and degreased after being dissolved in alkali solution; then the acid sinking is configurated and membranal filtrated to desalted and dewatered, and is alkali dissolved again and then the hydrogen peroxide or the ozone is added to decolorize and deodorize; then the membrane filtration is adopted for dewatering; then the ethanol is used for immersing and cleaning, degreasing, dewatering, decolorizing and deodorizing the protein; the protein is then superfinely comminuted after being vacuum dried, deodorized and dewatered, thus the white low-fat and salt-free edible silkworm pupa protein powder without the pupa smell is obtained. In the method, the effects of decolorizing, deodorizing and desalting are good and the products have a high quality; the amino acid composition is of equilibrium; the protein content reaches more than 90 percent, the content of the fat is lower than 2 percent and the ash content is less than 3 percent; the products have a good safety without organic residues, thus can be applied to the industries of medicine and food. At the same time, by adopting the method, the comprehensive cost is low, the auxiliary materials for production can be reused without pollution caused by the discharged acid waste water; the chosen equipment is all suitable for continuous mass production.

The invention relates to the field of food manufacturing, and discloses a method for preparing nourishing instant chicken. The method comprises the following steps: selecting good chicken; adding various condiments to pickle or agitate, and then roasting after frying. The product disclosed by the invention is not only nourishing, but also free of a corrosion remover, but long in quality guarantee period, fragrant, fresh and tender in taste, and applicable to popularization and application.

The invention relates to a nanometer composite gel dressing containing baicalin and soapstone and a preparation method for the nanometer composite gel dressing. The nanometer composite gel dressing containing the baicalin and the soapstone comprises the following ingredients of: alkyl acrylamide monomers, inorganic nanometer soapstone grains, an initiator, a catalyst, the baicalin, deionized water and absolute ethanol. The preparation method comprises the following steps of: (1) dispersing the inorganic nanometer soapstone grains; (2) preparing a gel dressing; (3) purifying the gel dressing; and (4) adsorbing the baicalin by the gel dressing. The preparation method has the core that the nanometer composite gel dressing crosslinkd with the soapstone is soaked in absolute ethanol solution of the baicalin. The nanometer composite gel dressing is high in biocompatibility and antibacterial performance, and can be used for skin trauma, ulcers, burn, scald and other skin diseases. The nanometer composite gel dressing and the preparation method have the advantages that a preparation process is simple, the condition is mild, the transparency and toughness of the dressing are high, and the absorption and release of the baicalin are controllable.

A floating diffusion (331) is created substantially at center of the light-receiving surface of an embedded photodiode (31), with a gate electrode of a transfer transistor (32) surrounding the floating diffusion. The concentration (or depth) of impurities in a p+-type semiconductor region, n-type semiconductor region or p-well region is changed in an inclined form so that a potential gradient being inclined downwards from the circumference to the center is created when an appropriate bias voltage is applied to the pn junction. The photocharges produced by incident light are rapidly moved along the potential gradient toward the center. Even in the case where the photocharge storage time is short, the photocharges can be efficiently collected since the maximum moving distance from the circumference of the photodiode (31) to the floating diffusion (331). Thus, the photocharges produced by the photodiode (31) are efficiently utilized, whereby the detection sensitivity is improved.

The invention discloses a production method for edible silkworm pupa protein powder, comprising the steps as follows: wet and dry fresh silkworm pupa, tussah pupa or eri-silkworm pupa are crushed, separated, flayed, dissolved in alkali solution, separated and degreased; a ceramic film is used to recover NaOH and separate protein concentrate solution; furthermore, hydrogen peroxide or ozone is added in the separated protein solution to carry out the decoloring and deodorization operation; protein is separated centrifugally after isoelectric points are adjusted; furthermore, the separated protein is embathed by ethanol so as to carry out the further operations of degreasing, decoloring and deodorizing; subsequently, the deodorizing and ethanol removing are carried out by drying in vacuum and the protein is crushed ultra-finely so as to prepare the light-yellow-white low-fat edible silkworm pupa protein powder without pupa smell and salt. The method has good effects on decoloring, deodorizing and desalting, the prepared product has high quality, the amino acid composition is balanced, the content of the protein reaches more than 90%, the content of the fat is less than 2%, the ash content is less than 3%, the safety performance of the product is good, and the edible silkworm pupa protein powder can be applied to the industries such as medicament, foods and the like. The process can be used for producing the edible silkworm pupa protein powder with the advantages of low comprehensive cost and recyclable produced auxiliary material.

The invention provides an online analyzer for total phosphorus of water quality and a detection method thereof. The analyzer comprises a reagent metering assembly, a digestion reaction assembly, a reaction cell assembly, a colorimetric photoelectric detection assembly and a single chip microcomputer, wherein the reagent metering assembly is connected to the digestion reaction assembly and the reaction cell assembly through a liquid conveying channel, the digestion reaction assembly is connected to the reaction cell assembly through the liquid conveying channel, the reaction cell assembly is also connected to the colorimetric photoelectric detection assembly through the liquid conveying channel, and the single chip microcomputer is used for connecting with the electronic components in eachassembly. The online analyzer for total phosphorus of water quality and the detection method thereof fully automate the steps such as injection, digestion, reaction and colorimetric measurement, can realize automatic, rapid and accurate analysis of total phosphorus content in water, have the advantages such as accurate measurement, good stability and relatively low digestion temperature, and provide reliable guarantee for long-term accurate monitoring of total phosphorus of water quality.