92results about How to "Rapid determination" patented technology

The invention discloses a method for detecting fluorine ions in a water body based on a smart phone, and belongs to the technical field of fluorine ion detection. According to the portable detection equipment based on the smart phone, laser emitted by the laser pen is divided into two beams through the beam splitter, then a to-be-detected liquid is compared with a sample with a fixed concentration, the smart phone is used for shooting a picture, and then the RGB value of an effective area is identified, so that the G ratio of the to-be-detected liquid to the sample with the fixed concentration is obtained; according to the method, a linear relation between fluorine ions with different concentrations and G ratios is constructed, high-sensitivity detection of F <-> is realized, compared with traditional fluorospectro photometer detection, the sensitivity is higher, the technical problem of test result deviation caused by instability of a rechargeable light source used in the field detection process in the prior art is solved, and the method is suitable for large-scale popularization and application. According to the invention, on-site detection of the water sample to be detected can be realized through the smart phone.

The invention relates to the technical field of consumer goods detection, and discloses a detection method for rapidly determining the content of twenty-two flame retardants in consumer goods, which comprises the following steps: S1, preparing a liquid sample; s2, putting a solid sample to be detected into a reaction tube, and adding a liquid sample; step S3, extracting; and S4, analyzing the sample solution by adopting a liquid chromatograph-mass spectrometer. The method can simultaneously detect the content of twenty-two organic flame retardants, utilizes ultrasonic extraction and LCMSMS analysis, makes up the disadvantages of gas chromatography, can rapidly determine the content of twenty-two organic flame retardants, is simple in operation and short in analysis time, and has very high test efficiency. According to the method, the repeatability is 0.3%-3.8%, the reproducibility is 1.3%-2.7%, the detection limit of the method is as low as 0.02 mg / kg, and the method completely meets the control requirements of all countries and the test requirements of customers.

The invention belongs to the technical field of microbiological detection, and particularly relates to a primer group, a kit and a method for detecting a coxsackie virus group A type 6 virus whole genome and application. A set of specific primer group aiming at CV-A6 whole genome sequence amplification is designed, aiming at different CV-A6 strains (different regions and different separation time), the super-multiplex PCR amplification can be realized, the whole genome sequence is further captured, the pathogen capture can be quickly realized at low cost in disease outbreak and epidemic periods, and the primer group has good practical value.

The invention relates to a method for preparing a sample wafer for X fluorescence analysis of bentonite by using a melting method, which comprises the following steps: 1) adding a flux and a bentonite sample into a crucible, dropwise adding a boric acid-glycerol solution, and stirring until the mixture is muddy; (2) adding a liquid oxidant into the crucible, uniformly stirring, wiping the head of the glass rod with quantitative filter paper, and putting the wiped filter paper into the crucible; and 3) firing the crucible on a high-frequency sample melting machine until the solid in the crucible is molten into a liquid state, adding a release agent, slightly cooling, and demolding to obtain the sample for X fluorescence analysis. The method has the advantages that the operation is simple, the flaking rate is high, and prerequisite conditions are provided for quickly, accurately and reliably measuring the primary and secondary components of the bentonite. According to the method, the sample does not need to be fired at high temperature by a muffle furnace in advance, the platinum crucible does not need to be pretreated, the detection period is remarkably shortened, and the power consumption cost is reduced.

The invention discloses a nondestructive detection method for the martensitic transformation amount in austenitic stainless steel. The method establishes a correlation model between the martensitic transformation amount and the hysteresis loop curve. In the actual engineering method for determining the transformation amount of austenitic stainless steel, the method achieves an order of magnitude of efficiency over the traditional detection method. The detection equipment occupies a small area and has certain portability. The method does not need to prepare samples in advance, and nondestructive detection is achieved. The method is easy to use, has low professional requirements for testers, has a wide detection application range, and can meet the needs of a large number of rapid determinations of the martensitic transformation amount of austenitic stainless steel.

The invention belongs to the technical field of analysis and detection, and relates to a method for detecting the gelatinization degree of starch. The invention relates to a starch gelatinization degree detection method, which comprises: 1) adding water to starch, and heating to obtain gelatinized starch; (2) transferring the gelatinized starch obtained in the step (1), adding a solvent to a constant volume, and preparing a series of gelatinized starch standard solutions with different concentrations; (3) respectively measuring response values of the series of standard solutions of the gelatinized starch with different concentrations obtained in the step (2) by adopting an HPLC-CAD detector, and drawing standard curves of the gelatinized starch with different concentrations and the corresponding response values; and 4) substituting the response value of the gelatinized starch to be detected into the standard curve obtained in the step 3) to obtain the concentration of the gelatinized starch to be detected, and then calculating the gelatinization degree of the gelatinized starch to be detected. According to the method, rapid determination can be achieved, the analysis method is about one minute, the starch gelatinization degree can be rapidly determined through a CAD detector (a corresponding standard curve is established), and therefore large-flux rapid sample testing is achieved.

The invention discloses a quality detection method for Blumea Balsamifera medicinal material, comprising the use of thin layer chromatography to identify Blumea Balsamifera medicinal material, mainly comprising: taking a test solution and a reference solution of Blumea Balsamifera medicinal material, spotting them on the same silica gel thin layer plate, using petroleum ether-ethyl acetate-chloroform with a volume ratio of 11:1:3 as a developing agent, spraying with a phosphomolybdic acid test solution with a mass content of 5%, and heating until the spots are clearly colored. The invention has the characteristics of accurately identifying the authenticity of Blumea Balsamifera medicinal material.

The present invention relates to the field of biotechnology. The present invention provides a method and a kit for simultaneously detecting 16 pathogenic microorganisms in raw milk using a liquid chip, and respectively designs specific upstream primers, specific downstream primers, probes and microspheres for different strain sequences, and then uses the multiple PCR products obtained after multiple PCR amplification to mix and hybridize with the liquid chip working solution with microsphere probes, and then incubate with SAPE, and then use the machine to determine the type of pathogenic microorganisms and their detection amount based on the detected microsphere fluorescence code and the MFI value of the fluorescence intensity of the reporter molecule on the microsphere. The detection method of the present invention requires a small amount of samples, and can achieve rapid, high-sensitivity, high-specificity, and high-throughput detection of multiple pathogenic microorganisms; it can provide a new method selection for laboratory testing of raw milk quality and safety, and better ensure the quality and safety of products and people's food safety.

The utility model discloses a device for measuring the dry slag rate of liquid reduced lead. The device comprises a sampling mechanism for sampling reduced lead liquid from a liquid lead bag, and an ingot casting mold for preparing the reduced lead liquid taken by the sampling mechanism into a lead ingot for measuring the oxygen content and the sulfur content so as to calculate the dry slag rate of the reduced lead, the sampling mechanism comprises a sampling rod, a sealing plug matched with the sampling rod for sampling, and a handle connected to the outer wall of the sampling rod; the top end of an inner hole of the sampling rod is in a circular truncated cone shape facilitating installation of the sealing plug. The lower part of the sealing plug is in a big-end-up circular truncated cone shape matched with the top end of the inner hole of the sampling rod; the ingot casting mold is in a hollow cylinder shape with a bottom, and the interior of the ingot casting mold is in a big-end-up circular truncated cone shape so that a circular truncated cone-shaped lead ingot can be cast. The dry slag rate measuring device is simple in structure, rapid in dry slag rate measurement and high in accuracy, solves the problems that a conventional wet lead dry slag rate measurement period is long, measured data are easy to interfere, and measured values have deviation, and can better guide adjustment in the production process.

The invention discloses a sulfydryl-functionalized high-performance chitosan homogeneous membrane which is prepared by taking chitosan and polyvinyl alcohol as substrates, L-cysteine as a modifier and tris (2-carboxyethyl) phosphine hydrochloride as a reducing agent through a non-solvent induced phase inversion method. Therefore, the inventor also establishes a preparation method of the chitosan homogeneous membrane as a binding phase of a thin film diffusion gradient technology. Finally, the thin film material with high adsorption capacity and rapid adsorption on mercury is innovatively prepared, and the DGT device taking the thin film material as a binding phase can rapidly, highly selectively and stably enrich mercury in a water body and is not interfered by other heavy metal ions; the technical problem that a biological membrane grows on the surface of a traditional DGT device due to long-time enrichment to interfere with accurate determination of mercury is successfully solved, the DGT technology is expanded to the field of complex determination of the concentration of trace Hg (II) in water, and the purpose of efficient, rapid and accurate determination is achieved.

The invention provides a spark source atomic emission spectrometry determination method for acid-soluble aluminum and inclusion aluminum, and belongs to the technical field of assessment of inclusions in steel. The spark source atomic emission spectrometry determination method for acid-soluble aluminum and inclusion aluminum comprises the following steps: establishing a calibration curve of all aluminum, then determining integral intensities of inclusion aluminum, all aluminum and acid-soluble aluminum in a sample under corresponding conditions, and calculating the intensity of the inclusion aluminum by using a difference value between the integral intensities; selecting two standard samples with adjacent strength according to the strength of aluminum inclusion in the sample, and calculating a calibration coefficient K according to the aluminum content Al% lt; the excitation rate F is calculated according to the peak integral intensity of the inclusion aluminum and the integral intensity of the total aluminum in the 0.0007% standard sample, the inclusion aluminum content Als% is equal to K * F * (IAlt-IAls), and the content of the acid-soluble aluminum is equal to the difference between the content of the total aluminum and the content of the inclusion aluminum. According to the method, the accuracy of a measurement result is effectively improved while high analysis speed, low cost and simplicity and convenience in operation are ensured.

The utility model discloses a novel device of quick determination biological incrustation soil expansion rate belongs to soil measuring equipment field. The device includes support assembly, measurement subassembly, soil body fixed assembly, water supply assembly, the soil body fixed assembly includes with water supply assembly connection's water tank, is placed in the water tank bottom's water -permeable stone, and the water -permeable stone is placed the sample to be measured, and the sample to be measured is connected bolt fixed on the water tank lateral wall, the measurement subassembly includes with support assembly connection's metal fixed disc, takes scale thin metal wire, circular ring's light waterproof metal sheet, the metal wire top is connected on the metal fixed disc or water tank lateral wall, and the metal wire bottom is conical needle structure, and it passes through waterproof metal sheet vertical or horizontal and inserts the soil body, and waterproof metal sheet is attached with the soil body surface. The device works, and the metal wire is buried into the soil sample vertically / horizontally, and the soil sample is saturated, and its expansion promotes waterproof sheet vertical displacement lifting / horizontal displacement, and the expansion rate is calculated according to the position change of sheet.

The invention belongs to the technical field of spectral analysis, and particularly relates to an XRF (X-Ray Fluorescence) testing method for measuring all components in coal ash and coal gangue extracts-Al / Si oxides, and the testing method comprises the following steps: S1, preparing a standard sample; s2, preparing a standard sample wafer; s3, measuring a standard sample wafer; s4, establishing an application method; and S5, testing the to-be-tested sample. According to the present invention, the Al / Si oxide component test application method is developed and established by using the XRF fluorescence spectrometer, and the application method completely meets the component analysis of various products in the existing fly ash and coal gangue extract-Al / Si oxide production process, and has characteristics of simple operation, accuracy, excellent accuracy and excellent precision, and great feasibility is reserved for the test range of a subsequent extension method.

The present invention discloses a quality detection method for goat milk leaf medicinal materials, including identification and / or content determination; the identification of goat milk leaf medicinal materials is a thin layer chromatography identification method; the content determination is to determine the content of silver forging glycosides in goat milk leaf medicinal materials by high performance liquid chromatography. The thin layer identification method of goat milk leaf medicinal materials adopted in the present application has the characteristics of high sensitivity, strong specificity and good separation effect, is simple and feasible, has strong reproducibility, and can accurately identify the authenticity of medicinal materials; the method for determining the content of silver forging glycosides in goat milk leaf medicinal materials adopted in the present application can accurately and quickly determine the content of goat milk leaf medicinal materials, and provide effective qualitative and quantitative analysis means for goat milk leaf medicinal materials, so as to facilitate the quality control of goat milk leaf medicinal materials. The quality detection method of goat milk leaf medicinal materials provided by the present invention can effectively control the overall quality of goat milk leaf medicinal materials and ensure the safety and effectiveness of goat milk leaf medicinal materials in clinical use.

The invention discloses a highly efficient casing gap measurement method, which comprises the following steps: S1, pre-setting pipe fittings: laying an outer pipe flat, and placing the outer pipe in a vertical state according to any diagonal thereof, and maintaining the state; placing an inner pipe in the same posture as the outer pipe, and partially inserting the inner pipe into the outer pipe, wherein the part of the inner pipe inserted into the outer pipe is an insertion section; S2, pipe fitting fittings: the diagonal of the lowermost end of the insertion section of the inner pipe and two outer walls forming the diagonal are correspondingly fitted with the diagonal of the lowermost end of the outer pipe and two inner walls forming the diagonal at one time, the fitting length is equal to the length of the insertion section, and the center line of the insertion section is parallel to the center line of the outer pipe; S3, forming a gap: a first gap is formed between the outer wall of one insertion section and the inner wall of the outer pipe adjacent thereto; correspondingly, a second gap is formed between the outer wall of the other insertion section and the inner wall of the outer pipe adjacent thereto; S4, measuring the gap: using a measuring tool to measure the first gap and the second gap respectively; the measuring method is fast and efficient.

The invention discloses a dimethylamine gas catalytic luminescence sensing material, a sensor, preparation and application, and belongs to the field of gas catalytic luminescence sensors, and the material preparation method comprises the following steps: dissolving a zirconium oxychloride hydrate in water, adding a chelating agent and polyhydroxy alcohol, dissolving, drying by distillation, calcining at a specific temperature, and naturally cooling. The metastable-state tetragonal-phase zirconium dioxide sensing material can be rapidly prepared, the particle size is about 10 nm, particle size distribution is uniform, agglomeration is avoided, the specific surface area is large, the sensing material can stably exist at the room temperature, the potential of rapidly detecting dimethylamine gas is achieved, and the sensing material has the advantages of being high in sensitivity, good in cycle performance and good in stability when being used for a catalytic light-emitting sensor. When the amine VOCs are continuously and repeatedly detected, good consistency is shown, dimethylamine gas can be measured with high selectivity without being interfered by other gases, reproducibility and stability are good, the gas sensor can be used for monitoring the dimethylamine gas for a long time, the response speed is high, the accuracy is high, and the service life is long.

The invention relates to the technical field of analytical chemistry, in particular to a method for simultaneously and rapidly measuring the content of a two-component triazine ultraviolet light absorber in multiple solvents, which comprises the following steps: S1, preparation of a standard solution, S2, drawing of an ultraviolet absorption spectrum, S3, selection of an optimal wavelength, S4, drawing of a standard curve, and S5, determination of the content of the two-component triazine ultraviolet light absorber. The method comprises the following steps: (1) preparing different concentrations of standard solutions containing the two-component triazine ultraviolet light absorber, and drawing a standard curve according to the first derivative value of the absorbance at the selected optimal wavelength, and (2) determining the content of a sample, namely determining the mixed triazine ultraviolet light absorber sample, and calculating the content according to the standard curve. According to the method, the content of the mixed binary triazine ultraviolet light absorber is simultaneously and rapidly measured in multiple solvents by adopting the first-order derivative spectrophotometric method, the interference of another to-be-measured component is eliminated, the accuracy is high, complicated pretreatment and separation processes are not needed, the operation is convenient and rapid, and the technical and equipment basic requirements are low.

The embodiment of the invention belongs to the technical field of detection, and relates to a detection reagent of delta 9-tetrahydrocannabinol and a preparation method and a detection method thereof, the detection reagent comprises a first detection reagent and a second detection reagent, and the preparation method comprises the following steps: dissolving NaCl in a buffer solution to obtain the first detection reagent; and dissolving the bovine serum albumin-anti-delta9-tetrahydrocannabinol antibody immobilized latex microspheres in a buffer solution to obtain the second detection reagent. The detection accuracy is improved.

The present invention relates to the field of surface enhanced Raman scattering technology and photocatalysis technology, and in particular to a CuO 2 / Au@CuS probe preparation method and application thereof, the present invention prepares CuO 2 / Au@CuS, which can quickly, effectively and sensitively determine GSH in cells and serum; using CuS to wrap Au NPs can not only effectively solve the aggregation of Au NPs, but also enhance the Raman signal intensity through chemical mechanisms; at the same time, TMB is activated by H through the activity of CuS peroxidase nanozymes. 2 O 2 Oxidized to oxTMB with a special Raman signal, GSH then reduces oxTMB to TMB. GSH can be detected by this indirect method, and GSH is ‑2 ‑10 ‑8 Linear fitting in the mM range, detection limit (LOD) reached 9.94*10 ‑10 mM.

The utility model relates to the field of construction surveying and mapping devices, in particular to an urban and rural planning construction surveying and mapping device. The technical problems that in the prior art, when a surveying and mapping device is used, a measurement area is usually not convenient to mark rapidly, and the surveying and mapping device is not convenient to assemble and use rapidly on a surveying and mapping site are solved. According to the technical scheme, the urban and rural planning construction surveying and mapping device comprises a surveying and mapping assembly; the device further comprises a first marking assembly, a moving assembly, a guiding assembly, an auxiliary assembly and a second marking assembly. The distance between the front end of the movable plate and the front end of the measuring plate can be rapidly measured by starting the laser range finder, the marking position of the second marking assembly can be conveniently and rapidly determined, a second drill rod penetrates through a second movable frame to be placed in soil, and then a cross plate is placed on the inner wall of a second groove body. And the central point of the cross plate is an accurate point position for measuring the distance, so that the construction at the point position is facilitated, and the technical problem is solved.

The application provides a method for online analysis of organic phosphorus and inorganic phosphorus in seawater, comprising: online sampling of seawater samples, establishment of a single-component digestion reaction kinetics analysis model of organic phosphorus and inorganic phosphorus at a characteristic wavelength; construction of a binary analysis model of total phosphorus at t1 or t2 time based on iterative addition of spectral absorbance; establishment of a water body background correction model to calculate the content of phosphate in the water body; coupling of the water body background analysis model to establish a binary analysis correction model of digestible total phosphorus; and continuous measurement of dissolved phosphate, organic phosphorus and digestible inorganic phosphorus in the water body based on the background correction model and the binary analysis correction model, so as to realize online continuous analysis of organic phosphorus, digestible inorganic phosphorus and phosphate components.

A rapid torque testing device for aluminum studs includes a first clamping block and a second clamping block. The first clamping block has a first stud relief groove at its front end and a wrench connecting block at its rear end, with connecting holes for connection to a torque wrench. The left and right sides of the second clamping block are higher than its center, and a second stud relief groove is located in its center. The center of the second clamping block is flush with the front end of the first clamping block. The left and right sides of the front end of the first and second clamping blocks are connected and fixed to each other. The first and second stud relief grooves combine to form an octagonal clamping groove, which clamps the octagonal structure at the bottom of the stud. This device solves the problems of existing aluminum stud torque testing processes involving numerous steps, long inspection times, many required tools, and high post-test quality risks.

The present invention relates to the technical field of quality detection of Chinese medicinal materials, and in particular to a method for determining pyrrolizidine alkaloids in licorice, which uses UPLC-MS / MS to determine cynaroline and its N-oxide, senegiline and its N-oxide, monocrotaline and its N-oxide, senegiline and its N-oxide, senegiline and its N-oxide, senegiline and its N-oxide, senegiline and its N-oxide, senegiline and its N-oxide, senegiline and its N-oxide, senegiline and its N-oxide, euryneline and its N-oxide, heliotropin, senegiline, arugula leaf senegiline and lycopodium N-oxide in licorice. The method for determining pyrrolizidine alkaloids in licorice provided by the present invention can provide technical support for the quality evaluation and safety evaluation of licorice.

The utility model discloses a civil air defense engineering concrete strength rapid measuring device which comprises a supporting table and a hydraulic cylinder, a pressure sensor is fixedly installed at the output end of the hydraulic cylinder, a detection pressing block is fixedly installed at the bottom of the pressure sensor, and a PLC is fixedly installed at the right end of the front surface of the supporting table. A stepping motor is fixedly installed at the upper end of the left side of the outer surface of the supporting table. Through the arrangement of the supporting table, a concrete sample for strength detection required by civil air defense engineering can be supported, and through the arrangement of the hydraulic cylinder, the pressure sensor and the detection pressing block, personnel can conveniently and rapidly measure the compressive strength of civil air defense engineering concrete; meanwhile, through the arrangement of a stepping motor, a two-way screw rod, a moving plate and a protective cover, the periphery of the concrete sample can be effectively and safely protected in the measuring operation process, and concrete chippings are prevented from splashing to the periphery and hurting personnel.

The invention relates to the technical field of fertilizer detection, and discloses a method for rapidly determining the content of effective phosphorus pentoxide in a compound fertilizer, which comprises the following steps: 1) sample treatment, 2) precipitation filtration, 3) precipitation titration, and 4) result analysis. According to the method, test data can be obtained within half an hour, the accuracy of a measurement result can still be ensured, and for the nutrient control process of the produced compound fertilizer, the production decision-making process is accelerated, and the quality of the compound fertilizer is ensured.

The invention relates to the technical field of analytical chemistry, in particular to a fluorescent probe for detecting avenaceum in water as well as a preparation method and application of the fluorescent probe. The supramolecular fluorescent probe for detecting the oat cake (DFQ) in the water body is a supramolecular fluorescent probe which takes dislocation ten-membered cucurbit [n] uril (ns-Q [10]) as a subject and thioflavin T (ThT) as an object, is a novel probe, can detect the oat cake in the water, and has high selectivity. The detection method adopting the probe has the advantages of high sensitivity, high selectivity, low detection cost, simple sample treatment, convenient operation, rapid determination, real-time detection and the like.

The invention discloses a method for determining the content of nitrate ions, sulfate ions and phosphate ions in trimethylchlorosilane, and belongs to the technical field of organic silicon precursor raw material detection. The method mainly comprises the following steps: mixing trimethylchlorosilane with water, fully hydrolyzing in a constant-temperature water tank, extracting to obtain a water phase, removing residual organic matters in a sample from the water phase through a reverse-phase pretreatment column, then adding silver oxide powder, mixing to remove chloride ions in the sample, and finally obtaining the trimethylchlorosilane. Mixing the supernate with cation exchange resin to remove excessive silver ions in the sample; and finally, detecting the content of nitrate ions, sulfate ions and phosphate ions in the sample by adopting ion chromatography. The sample pretreatment method is simple, convenient and easy to operate, the recovery rate range of the method is 90%-110%, the accuracy is high, the problem that anions in trimethylchlorosilane are difficult to measure is solved, and a scientific technical means is provided for content detection of nitrate ions, sulfate ions and phosphate ions in trimethylchlorosilane.

The present application relates to a kind of urban inland river sewage intelligent detection method, comprising the following steps: 1) preparation standard sewage sample, obtain multiple sewage samples with different indicators and different index data;2) the near infrared spectrum data of all sewage samples is collected and pretreated, form near infrared spectrum data set, and be divided into training set and test set;3) construct sewage index quantitative detection model based on convolution neural network, sewage index quantitative detection model is trained and tested by training set and test set;4) collection actual water sample and divide into two parts, respectively by chemometrics and the sewage index quantitative detection model established to predict its key index data, by comparing to verify the accuracy and reliability of the model established;5) using the sewage index quantitative detection model obtained to detect the urban inland river water quality to be detected.The method is conducive to improving the speed and accuracy of urban inland river water quality detection.

The invention discloses a quality detection method for Helleborus truncatus medicinal materials, which includes a method for determining the content of isofraxidin and scopoletin in Helleborus truncatus medicinal materials, and can accurately and quickly determine the content of Helleborus truncatus medicinal materials, and provide effective qualitative and quantitative analysis means for Helleborus truncatus medicinal materials, thereby facilitating the quality control of Helleborus truncatus medicinal materials. The quality detection method for Helleborus truncatus medicinal materials provided by the invention can effectively control the overall quality of Helleborus truncatus medicinal materials and ensure the safety and effectiveness of clinical use of Helleborus truncatus medicinal materials.