31results about How to "Determine content" patented technology

The invention discloses an intelligent cup capable of detecting liquid substance based on near infrared spectrum, comprising a cup body, a cup lid, an liner, an MCU, a near infrared spectrum transmitter, a near infrared spectrum receiver, a display screen and a peripheral circuit, wherein the MCU and the peripheral circuit are both arranged at the bottom of the cup body, two transparent windows which are symmetrical along the axis are arranged at the lower end of the liner, the near infrared spectrum transmitter and the near infrared spectrum receiver are both arranged between the liner and the outer wall of the cup body and respectively positioned at the two transparent windows, the display screen is arranged on the outer wall of the cup body, and the signal ends of the near infrared spectrum transmitter, the near infrared spectrum receiver, the display screen and the peripheral circuit are all connected with the signal end of the MCU. The intelligent cup samples and detects drinking water in the cup by the near infrared spectrum detection unit, and determines the liquid substance or content, particularly the content of heavy metal and other harmful substances by analyzing sampled data of the substance spectrum diagram and being compared with the known substance spectrum characteristics.

The invention relates to a method for detecting EDTA (ethylene diamine tetraacetic acid) in a laundry detergent. The method comprises steps as follows: (1) preparing a potassium bicarbonate aqueous solution; (2) adding the to-be-detected laundry detergent to the potassium bicarbonate aqueous solution, stirring the solution at the temperature of 45-50 DEG C for 10-20 min, filtering the solution while the solution is hot, and naturally cooling the solution to the room temperature to obtain a pretreated solution; (3) adding an iron liquid to the pretreated solution, performing oscillating extraction and then centrifugation, and removing an aqueous phase to obtain an ion liquid phase; (4) adding trivalent iron salt to the ion liquid phase, after full and even mixing, performing chromatography separation with a gel column chromatography Superose 12 column, performing washing with n-hexane firstly, then performing gradient elution with a petroleum ether-normal propyl alcohol mixed solvent serving as an eluent, and collecting the eluent; (5) evaporation the solvent of the eluent until the solvent is almost dry, and performing dissolution, volume determination and filtration with an organic membrane to obtain a detection sample; (6) performing liquid chromatography separation on the to-be-detected sample to determine the content. The method is excellent in EDTA quantitation accuracy, and a new detection means is provided for control on the content of the EDTA in the laundry detergent.

The invention discloses a method for detecting carbamazepine. The method comprises the following steps of: contacting a sample to be detected and a carbamazepine specificity antibody; and determining the content of the carbamazepine in the sample according to combination of a substance in the sample to be detected and the antibody, wherein the carbamazepine specificity antibody is obtained from a carbamazepine immunogen immune animal. The detection method is high in specificity; and by the method, the carbamazepine and the content of the carbamazepine in the sample to be detected can be determined accurately.

The invention discloses a standard colorimetric method for measuring the content of a carbonyl compound in industrial methanol, belonging to the field of industrial methanol. The standard colorimetric method comprises the following steps of: firstly, preparing a series of standard solutions with different contents of the carbonyl compound, reacting with 2,4-dinitrophenylhydrazine and potassium hydroxide under a certain condition, and observing that the color gradually changes from faint yellow to deep red brown with the gradual increase of the content of the carbonyl compound. According to information such as the colors of the standard solutions, volume part mass number of the content of the carbonyl compound, and methanol grade, a standard colorimetric card. A sample completely reacts under the same condition, compared with the standard colorimetric card, a closest color is found, and the information such as content of the carbonyl compound and the methanol sample grade is directly read. The quantitative calculation of the content of the carbonyl compound can be realized. The standard colorimetric method has the characteristics of intuition, rapidness, convenience, low requirements for detection devices, apparatuses and occasions, and the like.

The invention discloses a method for determining the content of Ti in a TiO2 photocatalyst and belongs to the field of chemical testing. The method comprises the following steps: adding 10-100mg of carrier catalyst into a polytetrafluoroethylene microwave digestion tube, adding 1-10ml of 98% concentrated sulfuric acid and 1-10ml of 30% hydrogen peroxide, and performing heating digestion reaction in a microwave digester, wherein the reaction temperature is controlled within 140-200 DEG C, and the reaction time is controlled within 25-55min; after the reaction is finished, a digestion solution is obtained, filtering the digestion solution, making up to the volume to 50ml, and determining the content of the Ti in a liquid supernatant by virtue of ICP-OES. The carrier TiO2 catalyst is acidized and subjected to microwave digestion pretreatment, TiO2 is converted into the Ti in a soluble ionic state, and the quick, simple and convenient method is provided for the determination of the content of the Ti in the TiO2 photocatalyst. The method is suitable for determining the content of the Ti in a TiO2 nano-sheet colloid, a TiO2 nano-tube, a thin TiO2 film and catalysts in other forms, is suitable for being used for determining the content of the Ti in the TiO2 photocatalyst after repeated reaction, and is wide in application range.

The invention discloses an electric arc atomic emission element spectrometer and a control method thereof and belongs to the field of oil fluid element spectrum analysis.The electric arc atomic emission element spectrometer comprises a disc electrode and a rod electrode, the disc electrode is arranged on a sample container, and the rod electrode is hung above the disc electrode and is opposite to the disc electrode.The electric arc atomic emission element spectrometer further comprises a disc electrode rotating motor, an electric arc generator, a spectrometer body, a controller and a data collection and communication module.The electric arc atomic emission element spectrometer can detect lubricating oil/grease used by mechanical equipment and can accurately and effectively know current wear conditions, pollution conditions and additive loss conditions of used lubricating oil/grease of the mechanical equipment, so that convenience is brought to timely finding early-stage faults, preventing the equipment from being seriously damaged and scientifically formulating oil/grease changing period, service life of the equipment is prolonged greatly, energy conservation and loss reduction are realized, and great economic benefit is brought to enterprises.

The invention discloses a method for detecting the content of aluminium and aluminium alloy oxide inclusions, comprising the following steps: (1) first, cutting a sample material of aluminum sheets, washing the sample material with absolute ethyl alcohol and absolute methanol, and drying; (2) weighing 1+/- 0.0001 g sample material, putting the sample material in a beaker containing 60-100 ml of methanol, adding 2-5 ml bromine in the beaker to react for 30-60 min at a temperature of 20-50 DEG C; (3) then adding 1-3 ml of bromine to react for 15-50 min at a temperature of 20-50 DEG C, and then adding 1-3 ml of bromine again to react for 15-50 min at a temperature of 20-50 DEG C, then reacting at a temperature of 30-60 DEG C until the sample material dissolves completely; (4) filtering the solution with filter paper, removing the filtrate, cleaning the filter paper with methanol until no bromine remains; (5) putting the filter paper having precipitations in a crucible, ashing from a low temperature, heating up to 600-900 DEG C and keeping warm for 20-60 min and then taking out, cooling, adding 1-3 g of alkali, and fusing at a temperature of 550-800 DEG C, taking out and adding hot water in the beaker, adding hydrochloric acid while shaking the beaker, pouring the liquid of the beaker in a 100 ml volumetric flask, and bringing to volume by water; and (6) respectively taking 10 ml of the solution out from the 100 ml volumetric flask, bringing to volume by water, then comparing by using a standard curve obtained by atomic absorption, and then determining the content of the aluminium and aluminium alloy oxide inclusions.

This invention discloses one portable double resin film electro-chemical sensor, which comprises level constant module, central control module and test electrode, wherein, the constant level module is composed of high input resistance computation amplifier as center error amplification device; reference electrode and given electrode are comparing to be sent to band filter and work frequency limit wave device for process to remove noise and interference through power amplifier to output test electrode; central control module also comprises data collection unit, progress switch unit, input display unit and single machine.

The embodiment of the invention discloses a method for determining active ingredients with myocardial protection and anti-inflammatory action in traditional Chinese medicine. The method comprises the steps of (1) obtaining each ingredient of the target traditional Chinese medicine through preparation of liquid chromatogram; (2) determining the active ingredient with myocardial protection action through myocardial cell antioxidant model experiment; (3) determining the active ingredient with anti-inflammatory action through macrophage anti-inflammatory model experiment. According to the determined traditional Chinese medicine active ingredients with myocardial protection and anti-inflammatory action, content of the traditional Chinese medicine active ingredients is easy to determine, then, quality control on the target traditional Chinese medicine can be realized, and clinical curative effect of the target traditional Chinese medicine is guaranteed.

The invention provides avian H9 subtype avian influenza virus antibody colloidal gold test paper and test card. The avian H9 subtype avian influenza virus antibody colloidal gold test paper and test card can detect the immune level of various birds and are wide in application range, high in specificity, high in sensitivity, easy to operate and short in consumed time. The test paper comprises a sample pad, a gold-labeled pad and a nitrocellulose membrane which are sequentially connected, wherein the gold-labeled pad is wrapped with a colloidal gold label of a monoclonal antibody, namely anti-mouse IgY Fc CH3-CH4; and a detection line close to one end of the gold-labeled pad and a quality control line away from one end of the gold-labeled pad are arranged on the nitrocellulose membrane, thedetection line is wrapped with an AIV-HA19 recombinant protein, the quality control line is wrapped with a second antibody, and the DNA sequence for encoding the AIV-HA19 recombinant protein is shownas SEQ ID NO.1.

The invention discloses a culture medium production process which comprises the following steps: premixing, namely primarily mixing multiple materials for producing a culture medium; carrying out grinding, namely grinding the primarily mixed materials; carrying out after-mixing, namely premixing the grinded materials for another time; carrying out spectrum detection, namely detecting the materialsafter the after-mixing step by using spectrum detection equipment, namely radiating materials in a same range in the culture medium with detection light of different wavelengths when detection is carried out, and respectively confirming contents of different materials within the radiation range. By adopting the culture medium production process disclosed by the invention, key quality property accuracy of the culture medium can be ensured.

The invention discloses a high-efficiency placer sample elutriation method. The method comprises the following steps of (1) carrying out soak cleaning treatment is carried out on a raw ore sample of atitanium-copper placer; (2) carrying out screening and impurity removal treatment on a product subjected to soak cleaning by using sieves with different particle size; and (3) carrying out crushing until a target mineral is obtained. The method has the advantages that the target mineral in the raw ore sample of the titanium-copper placer can be effectively obtained by elutriation, and the mine production yield and the comprehensive recovery rate can be remarkably increased; the detection of the target mineral content in the raw ore sample of the titanium-copper placer can be accurately determined on the basis of the weight of the obtained target mineral, so that raw ore monitoring is facilitated, and in addition, the method is simple in process, safe and convenient to operate, high in practicability and easy to popularize.

According to the method for tracing and analyzing the drug content in the health care product through the auxiliary agent, the drug in the health care product can be subjected to photolysis reaction and generate free radicals, the free radicals generated in the photolysis process of the drug are captured through the drug auxiliary agent to generate a volatile first component, then the first component with the low boiling point is separated out through the gas-liquid separation technology, and the content of the drug in the health care product is analyzed through the gas-liquid separation technology. And carrying out derivatization reaction on the first component and a derivatization reagent, and determining the content of the medicines in the health care product by adopting surface enhanced Raman spectroscopy. Compared with the prior art, the method for tracing and analyzing the drug content in the health-care product by the aid of the auxiliary agent has the advantages that the time required by sample pretreatment is shortened, the detection and analysis process of the drug content in the health-care product is greatly simplified, the steps are simple, and the sensitivity is high.

The invention relates to a method for operating a water-conducting domestic appliance comprising a drum 3 for receiving objects 22, 34 to be treated, said drum having at least one perimeter with at least one radiation passage 30, 35; a controller 18; and a spectrometer 21, which comprises at least one radiation source 5, 27, at least one radiation detector 7, 28, and a microcomputer 6. The microcomputer 6 and the controller 18 are designed to exchange information between each other such that data can be exchanged between the spectrometer 21 and the controller 18. The invention is characterizedby the following steps: (a) rotating the drum 3 at a specified rotational speed Dz, wherein a frequency f, which is based on the number of rotation cycles of radiation passages 30, 35 per unit of time, is defined as the product of the rotational speed Dz multiplied by the number of radiation passages 30, 35; (b) continuously ascertaining radiation 31 from the at least one radiation source 5, 27 of the spectrometer 21 in a wavelength range lambda1 to lambda2 through the at least one radiation passage 30, 35 of the rotating drum 3 such that a radiation 3 which is periodically interrupted at thefrequency f is produced in the drum interior and the objects 22, 34 in the rotating drum 3 are supplied with the radiation 31 periodically interrupted at the frequency f, wherein the at least one radiation detector 7, 28 is arranged such that the radiation 32 reflected by the objects 22, 34 is registered directly as a measurement signal without passing through the radiation passage 30, 35, and thus without being interrupted by the radiation passage 30, 35 at the frequency f, and a periodic function, which depends solely on the domestic appliance 1, with the period length 1/f, in particular asine or rectangular function, is generated as a reference signal by the controller 18; (c) transmitting the measurement signal and the reference signal to the microcomputer 6, analyzing the measurement signal and the comparison thereof with the reference signal using an analysis routine stored in the microcomputer 6, and transmitting the analyzed measurement signal to the controller 18; and (d) selecting and/or adapting an operating program by means of the controller 18 with respect to the analyzed measurement signal, wherein steps (b) to (d) are carried out once or multiple times. The invention further relates to a domestic appliance which is suitable for carrying out the method.

The invention discloses an automatic packaging machine, which comprises a workbench (1), a hopper (2), a conveying mechanism, a roll film folding mechanism, a packaging mechanism and a conveyor belt (8), and also comprises an oil return system, wherein the oil return system comprises an oil pump (9) and an oil return pipe (91); a stirring rod 23 and a conveying rod 22 are arranged inside the hopper 2; the stirring rod 23 is located at the outer side of the conveying rod 22; helical sheets are arranged on the conveying rod 22; a first cold air hole is formed in a longitudinal sealing plate; a second cold air hole is formed in a horizontal sealing plate; and the first cold air hole and the second cold air hole are connected with a fan by an air cooling pipe (7). The automatic packaging machine also comprises a high-temperature cleaning mechanism (81) and a drying mechanism (82). The automatic packaging machine has the advantages that sterilization can be realized; seams are prevented from appearing during packaging material bags; a plurality of seasonings can be packaged; and the oil reduction of pickled mustard-green can be effectively reduced.