55 results about "Ultraviolet absorption spectrum" patented technology

The invention discloses a phenoxazine derivative as well as a preparation method and application thereof, and belongs to the field of biological medicine synthesis. A series of phenoxazine derivatives are synthesized by using a simple, efficient and low-toxicity method, circular dichroism, fluorescence spectrum and ultraviolet absorption spectrum prove that the molecules not only have non-covalent interaction with DNA, but also can be subjected to transamidation reaction with the DNA to covalently modify the DNA, and meanwhile, the phenoxazine derivatives are relatively good in anti-tumor cell activity and relatively good in anti-tumor effect. And a new strategy is provided for the research of DNA targeted drugs.

The invention relates to a diatomic catalyst for detecting carbosulfan pesticide residue and a preparation method, and belongs to the technical field of food safety detection. According to the invention, a reducing sulfide generated by breaking a nitrogen-sulfur (N-S) bond of carbosulfan under an acidic condition is used as a specific substance. The reductive sulfide not only can prevent bimetal active sites in the diatomic catalyst, but also consumes hydroxyl radicals generated by catalyzing hydrogen peroxide (H2O2), and the sensing switch enzyme formed by a dual enzyme inhibition mechanism causes the enzyme substrate 3, 4-dihydroxyl-3, 4-dione to be converted into the diatomic catalyst, so that the catalytic activity of the diatomic catalyst is improved. The blue color of the 3, 3 ', 5, 5'-tetramethyl benzidine (TMB) gradually becomes light along with the increase of the concentration of carbosulfan, sensitive visual detection is implemented, and after a blue product is read by using an ultraviolet spectrophotometer, the absorbance value generated by an ultraviolet absorption spectrum at 654 nm is linearly dependent on carbosulfan. The prepared diatomic catalyst effectively improves the detection sensitivity of the carbosulfan pesticide residue, and has good popularization and application prospects.

The invention relates to the technical field of leather wastewater treatment, and provides an ultraviolet-visible spectrum-based leather wastewater ozone dosage and COD (Chemical Oxygen Demand) prediction method. The method comprises the following steps: firstly, determining the types of organic matters in a tannery wastewater sample, and determining the distribution characteristics of the organic matters in different fluorescent regions through three-dimensional fluorescence spectrum analysis, so as to discriminate the types of organic pollutants; secondly, screening key wavelengths, and determining characteristic absorption wavelengths representing different organic matters through an ultraviolet-visible light spectrum; then carrying out an ozone oxidation experiment, and synchronously measuring a COD value and an ultraviolet absorption spectrum under different ozone addition amounts; based on experimental data, a multiple linear regression and exponential regression prediction model of ozone dosage and a COD prediction model based on partial least squares regression are established. According to the invention, accurate control of ozone dosage and real-time monitoring of COD are realized, the treatment efficiency is improved, the operation cost is reduced, the adaptability to water quality fluctuation is enhanced, and the method has a wide engineering application prospect.

The invention relates to the field of water quality detection, in particular to a water quality sampling detection method and device applied to a small and micro wetland unit. The method comprises the following steps: determining a turbidity coefficient according to scattered light intensity of a target water sample under different wavelengths, absorbance of a target interval in an ultraviolet absorption spectrum and fluorescence intensity of a target area in a fluorescence spectrum; determining a scattering equivalent absorption value of each wavelength according to the scattered light intensity of the target water sample under each wavelength, the absorbance corresponding to each wavelength in the ultraviolet absorption spectrum and the turbidity coefficient; determining a real ultraviolet absorption signal of each wavelength according to the absorbance corresponding to each wavelength in the ultraviolet absorption spectrum and the scattering equivalent absorption value of the wavelength; correcting the fluorescence spectrum according to the turbidity coefficient and the scattering equivalent absorption value of each wavelength to obtain a corrected fluorescence spectrum; and detecting the water quality according to the corrected fluorescence spectrum and the real ultraviolet absorption signal of each wavelength. According to the invention, accurate water quality sampling detection can be provided.

This invention discloses a method for detecting polycyclic aromatic hydrocarbons (PAHs) based on ultraviolet fluorescence and absorption spectroscopy, comprising: Step 1, acquiring the ultraviolet absorption spectrum and the fluorescence emission spectrum of a water sample under ultraviolet light excitation; Step 2, analyzing the corresponding CDOM fluorescence spectrum using the ultraviolet absorption spectrum obtained in Step 1; Step 3, subtracting the CDOM fluorescence spectrum obtained in Step 2 from the fluorescence emission spectrum obtained in Step 1 to obtain a mixed fluorescence spectrum containing multiple PAHs; Step 4, performing multivariate fitting on the mixed fluorescence spectrum obtained in Step 3 to obtain the type and concentration of each PAH in the water sample. This invention also provides a PAH detection device. The method provided by this invention is simple to operate and can directly detect raw water samples, thereby obtaining more accurate PAH detection results.

The invention provides an intelligent control method for cyclic utilization of washing water, which comprises the following steps: collecting multi-mode water quality data such as ultraviolet absorption spectrum, optical scattering intensity and electrochemical signals, combining context information such as clothes material, washing temperature and laundry detergent type, performing normalization, de-noising and temperature compensation pre-processing, and calculating the water quality of the washing water; inputting into a multi-scale convolution auto-encoder to realize decoupling separation of pollution features and background interference features; a gating fusion mechanism is utilized, key features are dynamically screened, a reusability discrimination vector is generated, a water quality score and a waterway control signal are output through a lightweight student model, intelligent switching of a water circulation path is realized, the water quality evaluation precision is improved, the method has interpretability and visual analysis capability on a discrimination process, and the method is suitable for popularization and application. The method is suitable for efficient utilization of water resources under diversified washing situations.

The invention belongs to the technical field of high polymer chemistry and material science, and particularly relates to application of a salicylaldehyde Schiff base chiral polymer in iron and copper ion detection, and the structural formula of the salicylaldehyde Schiff base chiral polymer is one of the following structures shown in the specification. . The salicylaldehyde Schiff base chiral polymer has high selectivity to copper ions and iron ions, and qualitative detection of the copper ions and the iron ions can be achieved according to changes of ultraviolet absorption spectrums, digital circular dichroism spectrums and fluorescence spectrums before and after coordination of the salicylaldehyde Schiff base chiral polymer with the copper ions and the iron ions.

The application discloses a method for establishing a gynecological menstruation-regulating tablet fingerprint spectrum by using a high-performance liquid chromatography technology and application, by using the method, a good fingerprint spectrum is obtained, and the chromatographic peak is comprehensive, 12 fingerprint peaks are confirmed, wherein, corresponding attribution peaks of angelica sinensis, fried atractylodes macrocephala koidz, vinegar corydalis and chuanxiong are all in the gynecological menstruation-regulating tablet, and the angelica sinensis, fried atractylodes macrocephala koidz and vinegar corydalis all have exclusive peaks. By comparing with the reference substance, and combining with ultraviolet absorption spectrum characteristics, characteristic peaks of five chemical components, i.e., chlorogenic acid, ferulic acid, chuanxiongolide I, ligusticum lactone and butenyl phthalide are identified. The application further discloses a reference fingerprint spectrum of the gynecological menstruation-regulating tablet obtained by using the method, the gynecological menstruation-regulating tablet fingerprint spectrum detection method and the obtained reference fingerprint spectrum can objectively evaluate the overall quality of the gynecological menstruation-regulating tablet, and provide a research basis for quality control of the gynecological menstruation-regulating tablet.

The application discloses a sunscreen composition based on the ultraviolet absorption characteristics of yellow water of liquor, and a preparation method and application thereof. The sunscreen composition comprises 10-60 parts by weight of a yellow water extract of a strong-flavor liquor, 20-70 parts by weight of a yellow water extract of a Maotai-flavor liquor, and 0-40 parts by weight of a yellow water extract of a light-flavor liquor. It is found that the yellow water of different flavor liquors has characteristic ultraviolet absorption spectrum, wherein the yellow water of the strong-flavor liquor has strong absorption in the UVB band (290-320 nm), the yellow water of the Maotai-flavor liquor has strong absorption in the UVA band (340-380 nm), and the yellow water of the light-flavor liquor has relatively uniform absorption in a wide band. According to the spectral complementarity, the natural sunscreen composition is obtained. The sunscreen composition has an in-vitro SPF value of 15-35, a PA value of ++~++++, good light stability and low skin irritation.

The invention discloses a method for testing the ink transfer rate of an intaglio printing organic photoactive layer and application. The test method comprises the following steps: preparing active layer ink into a reference solution, and measuring a first absorption curve; printing the same amount of active layer ink into a film in an intaglio printing manner; collecting ink attached to the surface of the scraper, preparing the ink into a scraper ink aqueous solution, and measuring a second absorption curve; collecting ink in the film layer, preparing a film-forming ink aqueous solution, and measuring a third absorption curve; and calculating the transfer rate of the ink based on the corresponding characteristic peak in the absorption curve. According to the test method provided by the invention, the printed active layer film is dissolved in the solvent, sufficient dissolution can be ensured in cooperation with ultrasound, the problem of weighing method misalignment caused by the phenomenon that the thickness of the printed film is possibly uneven is avoided, errors can be reduced by testing the ultraviolet absorption spectrum of the solution, and the test precision and reproducibility are remarkably improved.

The utility model provides a dual-light-source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor, which solves the problem that turbidity particles can interfere with an ultraviolet absorption spectrum of nitrate nitrogen and influence the detection accuracy in the prior art. A dual-light-source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor comprises a detection cavity, and a light-emitting assembly and a receiving assembly are arranged on the two sides of the detection cavity; a deep ultraviolet light source emitter and a turbidity light source emitter are arranged in the light emitting assembly, a deep ultraviolet light source receiver and a turbidity light source receiver are arranged in the receiving assembly, the deep ultraviolet light source receiver is arranged opposite to the deep ultraviolet light source, and the turbidity light source receiver is arranged opposite to the turbidity light source. As the measurement result of the nitrate nitrogen is possibly interfered by the turbidity of the water body, the sensor can measure the turbidity of the water body firstly by integrating the turbidity light source and the receiver of the turbidity light source, and correspondingly compensate the measurement result of the nitrate nitrogen so as to reduce the interference of the turbidity on the measurement of the nitrate nitrogen.

The present invention provides a boron ester furan derivative compound and its preparation method and application, belonging to the field of small molecule optical sensing technology. The present invention reacts after mixing 5-aldehyde furan-3-boric acid pinacol ester, compound a and solvent to obtain a boron ester furan derivative compound, wherein compound a is 2,2-dimethyl-1,3-dioxazolidine-4,6-diketone [malonic acid ring (sub) isopropyl ester], 3-trifluoromethylisoxazole-5 (4H)-ketone, 1,3-dimethylbarbituric acid or 1,2-diphenyl-3,5-pyrrolidone. The furan ring in the boron ester furan derivative compound prepared by the present invention can undergo nucleophilic reaction with the amino group in the drug to generate a linear structure derivative with a characteristic color and a triene group, and the solution color changes from colorless or light yellow to reddish brown, and the ultraviolet absorption spectrum changes significantly. This rapid sensing mode gives it huge development potential in terms of the distinction and sensitive detection of drugs and their analogs.

This resin composition contains: a copolymer of a constitutional unit derived from ethylene and a constitutional unit derived from an α-olefin that has a carbonyl group; a bromine-based flame retardant; and antimony trioxide. In this resin composition, the content of the copolymer is 20 mass% to 60 mass% inclusive. In this resin composition, the content of the bromine-based flame retardant is 10 mass% to 30 mass% inclusive. In this resin composition, the content of the antimony trioxide is 2 mass% to 15 mass% inclusive. This resin composition additionally contains at least two compounds that are selected from the group consisting of a first compound, a second compound, and a third compound. In this resin composition, the respective contents of the at least two compounds that are selected from the group consisting of the first compound, the second compound, and the third compound are each 0.01 mass% to 1.5 mass% inclusive. The highest absorption peak in the ultraviolet absorption spectrum of the first compound is present in the range of 320 nm to 360 nm inclusive, the highest absorption peak in the ultraviolet absorption spectrum of the second compound is present in the range of not less than 275 nm but less than 320 nm, and the highest absorption peak in the ultraviolet absorption spectrum of the third compound is present in the range of not less than 240 nm but less than 275 nm.

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 invention relates to a GIS equipment fault detection method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: inputting target gas in GIS equipment into an ultraviolet spectrum detection module to obtain an ultraviolet absorption spectrum of the target gas, and analyzing to obtain components and a mixing ratio of the target gas based on the ultraviolet absorption spectrum; under the condition that the change of the mixing proportion relative to the reference mixing proportion exceeds a preset proportion range, inputting the target gas into an infrared spectrum detection module to obtain an infrared absorption spectrum of the target gas, and analyzing to obtain the corresponding concentration of the components of the target gas based on the infrared absorption spectrum; and under the condition that the change of the corresponding concentration relative to the reference concentration exceeds a preset concentration range, determining that the GIS equipment has a fault. By adopting the method, the accuracy of GIS equipment fault detection can be improved.

The invention discloses a silver ion fluorescent probe based on pyrrolo-pyrrole aza-BODIPY as well as a preparation method and application of the silver ion fluorescent probe. The probe has a specific chemical structure, and alkynyl groups are modified at two ends of the probe. When the probe is combined with silver ions, the ultraviolet absorption spectrum of the probe has absorption peak widening and red shift within the range of 680-690nm, and meanwhile, the fluorescence emission of the probe under the excitation of 650nm is remarkably quenched, so that the specific dual-mode detection of the silver ions is realized. The probe shows high selectivity and high sensitivity on silver ions, the detection limit can reach the nanomole level, the anti-interference capability is high, and the probe can work in water or various organic solvents. The invention also provides a clear synthetic route of the fluorescent probe. The probe is suitable for rapid and sensitive detection of silver ions in environmental or biological samples.

The invention provides a method for detecting various plant-derived biochemical pesticides in apples, and belongs to the technical field of pesticide detection. According to the method, acetonitrile is used for extracting the plant-derived biochemical pesticide, graphene / nano-ZrO2 / C18 is used for purification, and qualitative and quantitative detection and analysis are carried out through high performance liquid chromatography-ultraviolet absorption spectrum-QDa mass spectrum. The result shows that the linear relation of triptolide, thidiazuron, indolebutyric acid, 2, 4-D, paclobutrazol and uniconazole in apples is good in the concentration range of 0.1-10 mg / L, and R2 ranges from 0.9990 to 0.9999; when the addition level is 0.1-10 mg / kg, the average recovery rate in an apple matrix is 80.3-92.3%, the relative standard deviation (RSDs) is 1.1-6.4%, the method detection limit (LOD, S / N > = 3) is 10-15 [mu] g / kg, and the quantitation limit is 50 [mu] g / kg.

The invention provides a strong-conjugation high-polarity ultraviolet absorbent as well as a preparation method and application thereof. According to the invention, a triazine derivative structure of a hyperconjugated system of (para-ester-triazine-BP-2-triazine-para-ester) is designed, the conjugated system is extended, charges in molecules are transferred, an ultraviolet absorption spectrum is widened, and an ultraviolet light absorber with a strong absorption effect on UVA and UVB is formed. The para-ester is introduced into the ultraviolet absorbent, and the vinyl sulfone group of the para-ester can be subjected to Michael addition reaction with amino (-NH2) in nylon to form a stable covalent bond, so that the ultraviolet absorbent is firmly combined on nylon fibers, and the washability is enhanced.

This invention discloses a method for identifying fresh / dried cocoon raw silk based on ultraviolet absorption spectroscopy. The method includes: pre-treating and extracting raw silk samples from fresh and dried cocoons to obtain a test solution; collecting the ultraviolet absorption spectra of the test solution and ultrapure water, and obtaining a corrected ultraviolet absorption spectrum after background signal correction; pre-processing the corrected ultraviolet absorption spectrum to obtain a pre-processed spectrum and its derivative spectrum; performing difference analysis to screen difference scoring indicators, and then establishing a discrimination model for fresh and dried cocoons; obtaining the pre-processed spectrum and its derivative spectrum of the raw silk sample to be identified, inputting them into the discrimination model for processing, and outputting the category to complete the identification of fresh and dried cocoon raw silk. This invention is convenient to operate, uses relatively common instruments, has high accuracy, and the accuracy can be further improved with increasing sample size, making it easy to promote and apply, and meeting the needs of identifying fresh / dried cocoon raw silk.

The invention relates to the technical field of voriconazole detection, in particular to a voriconazole structure identification method based on multi-dimensional nuclear magnetic resonance, and the voriconazole structure is analyzed through ultraviolet absorption spectrum (UV), infrared absorption spectrum (IR), ultrahigh resolution mass spectrum (FT-MS), 1D / 2D nuclear magnetic resonance (NMR), thermal analysis (TGA, DSC) and X-ray powder diffraction (XRD). According to the method, information of a nuclear magnetic HMBC spectrum is fully utilized, the configuration of a sample is reasonably analyzed, the result is consistent with the chemical structure of the sample, each spectrum is reasonable in attribution, the crystallinity of the voriconazole is verified through X-ray powder diffraction, the melting point and the thermal stability of the voriconazole are represented through thermal analysis, the voriconazole is detected through multiple dimensions, detection is more comprehensive, and the method is suitable for large-scale popularization and application. And accurate data support can be provided, in order to fully utilize information of the nuclear magnetic HMBC spectrum, the configuration of the sample is reasonably analyzed, the result is consistent with the chemical structure of the sample, the crystallinity of the sample is verified by X-ray powder diffraction, and the melting point and the thermal stability of the sample are represented by thermal analysis.

The invention belongs to the technical field of dangerous goods detection and analysis, and particularly relates to a preliminary screening method for judging heroin relevance. The method comprises the following steps: carrying out gradient elution on eight alkaloids in heroin by adopting ultra-high performance liquid chromatography, confirming peaks of the eight alkaloids by combining an ultraviolet absorption spectrum and retention time, and calculating the concentration of each alkaloid through a peak area external standard method of each alkaloid. The method comprises the following steps: performing specific ratio combination on eight alkaloid concentration values to form 14 specific alkaloid concentration ratio groups, and performing z fraction standardization on the ratio combinations to eliminate the dimensional difference between the alkaloid concentrations and the influence of heroin hydrolysis on the concentration content of each alkaloid in heroin. And finally, calculating the relevance among the real captured heroin samples by using a Pearson coefficient method. The method is accurate in discrimination result, low in cost and simple to operate, and can be used as a preliminary screening method for heroin relevance discrimination.

The invention belongs to the field of medical examination, and particularly relates to a horseradish peroxidase inclusion compound and a preparation method and application thereof. The horseradish peroxidase clathrate compound is prepared from horseradish peroxidase and cucurbituril, the cucurbituril is added into the horseradish peroxidase, so that the enzyme activity and stability of the horseradish peroxidase are remarkably improved, and meanwhile, the horseradish peroxidase clathrate compound has reversibility, so that the horseradish peroxidase can be recycled. Besides, in the presence of a horseradish peroxidase inclusion compound and a substrate, an ultraviolet absorption spectrum signal generated by redox reaction is in negative correlation with antigen concentration and has a linear relationship, so that the horseradish peroxidase can be used for detecting tumor markers.

The present application relates to the technical field of analytical chemistry, in particular to a method for simultaneously and rapidly determining the content of two-component triazine ultraviolet absorbers in multiple solvents, comprising the following steps: S1. preparation of standard solution, S2. drawing of ultraviolet absorption spectrum, S3. selection of optimal wavelength, S4. drawing of standard curve, preparing standard solutions with different concentrations of two-component triazine ultraviolet absorbers, drawing a standard curve according to the first derivative value of the absorbance at the optimal wavelength selected above, S5. determination of sample content, taking a mixed triazine ultraviolet absorber sample for determination, and calculating the content according to the standard curve. The present application uses the first derivative spectrophotometry to simultaneously and rapidly determine the content of two-component triazine ultraviolet absorbers after mixing in multiple solvents, eliminates the interference of another component to be measured, has high accuracy, does not need complex pretreatment and separation process, is easy and fast to operate, and has low technical and equipment basic requirements.

The invention provides a method for rapidly detecting the content of total flavonoids in ginkgo biloba extract based on ultraviolet spectrum, which comprises the following steps: taking a ginkgo biloba extract sample, and treating by adopting an ultrasonic-assisted extraction method to prepare flavone extract liquor; scanning the flavone extracting solution by using an ultraviolet-visible spectrophotometer to obtain ultraviolet absorption spectrum data of the flavone extracting solution in a characteristic wavelength range; and inputting the obtained ultraviolet absorption spectrum data into a pre-generated general flavone content prediction model, and directly outputting to obtain the content value of general flavone in the ginkgo leaf extract. According to the method, interference of coexisting substances in a traditional ultraviolet method is effectively overcome through a chemometrics algorithm, detection is completed within a few minutes, and the accuracy of the method is equivalent to that of a high performance liquid chromatography. The method is easy and convenient to operate, low in cost, high in efficiency and particularly suitable for rapid quality control and raw material screening in the production process of the ginkgo leaf extract.

The present invention relates to a polyvinyl alcohol-based resin, wherein when the polyvinyl alcohol-based resin is made into a 0.1 wt % aqueous solution, an absorbance (X) at a wavelength of 320 nm in an ultraviolet absorption spectrum thereof is 0.3 or more, and a ratio (Y / X) of an absorbance (Y) at a wavelength of 380 nm to the absorbance (X) at a wavelength of 320 nm is 0.09 or more.

The application discloses a kind of long afterglow base ratio type aptamer sensor construction and carbendazim detection application, belong to spectral analysis technical field.The application is based on zinc germanate manganese-doped long afterglow material (ZGM) and the methylene blue with fluorescent characteristic constructs the ratio type aptamer sensor without complementary chain, using the overlapping characteristics of ultraviolet absorption spectrum and ZGM phosphorescence emission spectrum of methylene blue, through resonance energy transfer mechanism, realize the ZGM phosphorescence quenching and methylene blue fluorescence enhancement of probe, and then construct the long afterglow ratio type aptamer sensor without complementary chain.The characteristic emission peak of the long afterglow ratio type aptamer sensor is at the green phosphorescence emission of 542nm and the fluorescence emission of 700nm, the probe has the advantages of without in-situ excitation, without background interference and exogenous interference, high specificity, can sensitively, accurately and specifically detect CBZ residue in food sample.

The invention discloses a method and system for correcting DOM concentration measured based on an ultraviolet absorbance method, and belongs to a water quality monitoring technology. Comprising the following steps: measuring absorbance data of an environmental water sample at a target wavelength of a UV-Vis wave band; solving a characteristic coefficient according to a plurality of groups of wavelengths in the UVA-Vis wave band and correspondingly measured absorbance data; constructing a characteristic function based on the characteristic coefficient obtained by solving, and substituting the target wavelength in the UVC-UVB wave band into the characteristic function to calculate suspended matter absorbance data; and subtracting suspended matter absorbance data from the measured target wavelength absorbance to obtain absorbance data of the DOM of the environmental water body under the target wavelength. Compared with the prior art, the device and the method have the advantages that the interference of suspended matters in different environmental water bodies on the ultraviolet absorption spectrum of the soluble organic matters can be automatically eliminated in real time, so that the soluble organic matters and related chemical oxygen demand (COD) indexes can be quickly and accurately detected.

The invention relates to the technical field of plasma physical and chemical diagnosis, in particular to an optical quantitative diagnosis system and method for space-time resolution of plasma active species. In order to solve the problems that full coverage of gas-phase species and liquid-phase species is difficult to realize at the same time and light path switching is complicated and time sequence collaboration is poor during multi-technology fusion diagnosis in the prior art, the following technical scheme is provided: the device comprises a light source system, a detection system, a time sequence control system and a plasma generation system. The device combines laser-induced fluorescence, a photochemical fluorescence probe and an ultraviolet absorption spectrum technology, has the advantages of integration, high sensitivity, spatial-temporal resolution and the like, realizes synchronous, quantitative and in-situ measurement of key active particles in a plasma gas phase and a plasma liquid phase, accurately analyzes the gas-liquid mass transfer and liquid phase permeation processes, and has a good application prospect. And a technical support is provided for realizing accurate control on the components and dosage of plasma active species and promoting the development of plasma biomedicine.

This application relates to a method for constructing an LCMS reading model and the application of the LCMS reading model. The construction method includes: acquiring LCMS training data, which includes training samples and corresponding training labels; wherein, the training samples include at least one of material structure features, mass spectrum features, ultraviolet absorption spectrum (UV) features, MS-UV correlation features, and instrument parameter features; the training labels include reading results corresponding to at least one business type; and iteratively training the initial model based on the LCMS training data to obtain a trained LCMS reading model, which is used to predict the target reading results corresponding to the business type. The solution provided in this application can efficiently and accurately output reading results for different business types, providing a reliable guarantee for the automated preparation process of products.

The invention belongs to the field of biomedicine, and discloses a nucleic acid phase diagram analysis method based on a variable-temperature ultraviolet absorption spectrum, which comprises the following steps: preparing buffer solutions with different gradient pH-ionic strength combinations, mixing the buffer solutions with a target structure, performing an annealing and melting procedure, and continuously collecting ultraviolet absorption spectrum data; matching the data of the temperature and the absorbance changing along with the time according to the time to obtain the data of the absorbance changing along with the temperature under the full wavelength; fitting and normalizing absorbance at the characteristic peak to obtain temperature dependence forming coefficients at different pH values and ion strengths, grouping the temperature dependence forming coefficients, and performing transposition treatment to obtain an ion strength dependence forming coefficient and a pH dependence forming coefficient; a single variable is fixed, and a temperature correlation phase diagram, a pH correlation phase diagram and an ion strength correlation phase diagram are drawn by utilizing dependency forming coefficients of other two variables, so that the limitation that the existing analysis method cannot reflect the stability of a nucleic acid structure in a complex environment is overcome.