38 results about "Peak area" patented technology

The embodiment of the invention discloses a method and device for testing foam seepage characteristics of a heterogeneous porous medium, electronic equipment and a storage medium, and relates to the technical field of fluid mechanics and nuclear magnetic resonance. The method comprises the steps that a heterogeneous porous medium sample with a clear permeability level difference is prepared, and the permeability level difference of the heterogeneous porous medium sample is determined; setting test parameters according to the permeability level difference of the sample, calibrating imaging parameters of the low-field nuclear magnetic resonance equipment, and setting a weighting mode; performing foam flooding treatment on the sample according to the set injection parameters, acquiring a spectrum of the sample according to the test parameters when foam is injected into a set amount, and acquiring nuclear magnetic imaging of the sample through low-field nuclear magnetic resonance equipment according to imaging parameters and a weighting mode; according to the relaxation characteristic of the spectrum, the main peak endpoint value is used for dividing the pore channel, the foam sweep degree is calculated according to the spectrum peak area of the spectrum, and the foam plugging strength is calculated according to the signal amplitude of nuclear magnetic imaging. According to the method, the problems of poor visualization adaptability and lack of evaluation systems in the prior art are solved.

To provide a photosensitive resin composition and light-shielding film that achieve both high light-shielding properties and reduced reflectivity on both the glass substrate side and the film side, while also being environmentally friendly by using extremely low amounts of fluorine and meeting requirements such as PFAS regulations. [Solution] A photosensitive resin composition characterized by containing components (A) to (F) and satisfying both (i) and (ii) below. (i) When a cured film of the composition is deposited on a glass substrate with an average film thickness in the range of 0.5 to 4.0 μm, and the surface of the film is measured by XPS, the peak area A of SiO2 in the peak fit analysis of the Si2p3 / 2 peak is... SiO2 And, peak area A SiO The ratio (A SiO2 / A SiO The value must be between 0.10 and 10.0. (ii) The ratio of the amount of element F to the total amount of elements Si, C, O, and F present on the surface of the film [F / (Si+C+O+F)] is 5.0% or less.

The invention relates to an underwater gamma-ray energy spectrum repeatability analysis method and device and a storage medium. The method comprises the following steps: acquiring a gamma-ray energy spectrum group measured underwater; performing spectrum unfolding on the gamma-ray energy spectrum group based on a Gold iterative deconvolution spectrum unfolding algorithm to obtain energy of gamma incident rays; solving a peak value and a peak area of the gamma-ray energy spectrum group by adopting a gravity center method; determining a first relative standard deviation corresponding to the peak value and a second relative standard deviation corresponding to the peak area; and determining the repeatability of the gamma-ray spectrum group based on the first relative standard deviation and the second relative standard deviation. According to the method, the background is deducted in a spectrum unfolding mode on the basis of the Gold iteration deconvolution spectrum unfolding algorithm, then the peak value and the peak area are calculated, the background deduction error is reduced, the repeatability is improved, meanwhile, the Gold iteration deconvolution spectrum unfolding algorithm reduces the measurement time, and the measurement accuracy is improved. Therefore, the technical effects of reducing the error of background deduction and improving the repeatability based on the Gold iteration deconvolution spectrum unfolding algorithm are realized.

The invention discloses a high-flux mixed solution quality control method based on relative response factors. According to the method, by introducing an internal standard reference substance and calculating a relative response factor Rr of each target analyte relative to the internal standard, synchronous and rapid calculation and stability dynamic evaluation of all component concentrations in a solution are realized, and the method comprises the following steps: selecting and preparing an internal standard solution; analyzing the mixed solution and the internal standard under the same condition to obtain a chromatographic peak area; calculating Rr; monitoring the change of Rr along with time to judge the component stability; and calculating the current concentration of each component based on the stable Rr value and the interior label information. According to the method, only one or a small number of internal standards are needed to replace a single standard prepared for each component in a traditional method, consumption (about 90%) and workload of standard substances are remarkably reduced, unstable components can be sensitively recognized, and an efficient, economical and reliable quality control solution is provided for high-throughput detection in the fields of environmental monitoring, food safety and the like.

The invention relates to a method for measuring the concentration of tetrachloroethylene in water, which comprises the following steps: (1) detecting a standard working solution of tetrachloroethylene by using a high performance liquid chromatograph to obtain a standard working curve of the tetrachloroethylene absorption peak area and absolute concentration of the standard working solution of tetrachloroethylene; (2) detecting a water sample to be detected by using the high performance liquid chromatograph to obtain the tetrachloroethylene absorption peak area of the water sample to be detected; a mobile phase used in the detection of the high performance liquid chromatograph comprises an organic phase and ultrapure water, and the volume ratio of the organic phase to the ultrapure water is (70-90): (30-10); the detection wavelength of the detection is 212 to 216 nm; the temperature of a column oven of the high performance liquid chromatograph is 35-40 DEG C. According to the method disclosed by the invention, the peak appearance time is short, the separation effect of the detected main peak and the impurity peak is good, the fitting degree of the obtained standard working curve is high, the separation degree of the main peak and the impurity peak in the detection of an actual water sample containing tetrachloroethylene is high, and the detection result is reliable.

[Problem] To provide a workpiece processing film and a workpiece processing method with which it is possible to hold a workpiece while keeping an attachment surface clean by being attached to the workpiece during workpiece processing. [Solution] This workpiece processing film is used for processing a workpiece, wherein: the workpiece processing film is a substrate-less double-sided adhesive film; and when 10 μL of a toluene solvent, obtained by immersing a workpiece processing film having a size of 80 mm×100 mm in 15 g of toluene at 25ºC for 24 hours, is measured by gel permeation chromatography, and the measurement results are shown as a chromatogram in which the vertical axis is a detection voltage and the horizontal axis is an elution time from the introduction of the toluene solvent to the elution from a column, the peak area of a detection component from an elution time corresponding to a time when the number-average molecular weight in terms of standard polystyrene is 2,500,000 to an elution time corresponding to a time when the number-average molecular weight in terms of standard polystyrene is 200 is at most 4,000 mV∙sec.

The application discloses a method for drawing the dissolution curve of perphenazine tablets by high performance liquid chromatography, comprising the following steps: adding perphenazine tablets and preheated dissolution medium into a plurality of dissolution cups in sequence under the light-proof environment; using a dissolution instrument to obtain dissolution liquid by sampling the plurality of dissolution cups for multiple times, 5mL of the dissolution liquid is sampled each time and the isothermal dissolution medium is supplemented at the same time; filtering the dissolution liquid, taking the filtered liquid to obtain the test sample solution, and storing the test sample solution for use in the dark; preparing the control sample solution with the perphenazine tablet concentration of 2.012ug / mL and 4.024ug / mL respectively, and storing the control sample solution for use in the dark; using a high performance liquid chromatograph, sucking the test sample solution and the control sample solution into the high performance liquid chromatograph according to preset chromatographic conditions; recording the peak area, and calculating the dissolution amount at each time point according to the formula; taking the dissolution time as the horizontal coordinate and the accumulated dissolution amount at each time as the vertical coordinate, and drawing the dissolution curve.

This polythiol composition comprises a compound (A) represented by formula (1) and a compound (B) represented by formula (2). In high-performance liquid chromatography measurement performed using a prescribed detector, the peak area of the compound (B) is 9.0 area% or less with respect to 100 area% of the peak area of the compound (A). (In formula (1), the plurality of R's are identical or different from each other, and each represent a divalent hydrocarbon group having 1-6 carbon atoms.) (In formula (2), the plurality of R's are identical or different from each other, and each represent a divalent hydrocarbon group having 1-6 carbon atoms. a1, b1, c1, d1, e1, f1, g1, and h1 are identical or different from each other, each represent an integer of 0-3, and the sum of the same is 6.)

The invention relates to the field of substance purity analysis methods, and discloses a method for analyzing the purity of o-phthalic anhydride by using gas chromatography, which comprises the following steps: firstly, preparing a standard solution of which the concentration of each component is close to that of each component in crude phthalic anhydride to be analyzed, and analyzing the standard solution for more than three times; calculating a correction factor of each substance after the peak area repeatability error of each substance is less than 3%; and inputting the correction factor into a method-component table, comparing the spectrogram of the to-be-detected sample solution with the spectrogram of the standard substance solution, determining peak localization of corresponding substances in the to-be-detected sample solution according to retention time, and calculating the purity of phthalic anhydride in the to-be-detected sample by adopting an area correction normalization method. The method is simple to operate, short in analysis time and good in stability and reproducibility.

The invention discloses a method for detecting dibenzoyl thiamine disulfide and related substances thereof. The detection method comprises the following steps: preparing dibenzoyl thiamine disulfide reference substance solutions with different concentrations, recording corresponding chromatograms and corresponding peak areas by adopting a high performance liquid chromatograph, and drawing a dibenzoyl thiamine disulfide standard curve; respectively drawing standard curves of the related substances in the same way; the method comprises the following steps: injecting a to-be-detected sample solution into a high performance liquid chromatograph, recording chromatograms under the wavelengths of 233 nm and 280 nm, and determining the nature of a main peak and impurity peaks by comparing the retention time of each peak in the to-be-detected sample solution, a p-dibenzoylthiamine disulfide reference substance solution and a related substance solution. The invention provides a high performance liquid chromatography which is used for analyzing related substances in diphenylthiamine, and the method is good in specificity, high in sensitivity, low in detection limit, simple to operate, efficient in separation and capable of being used for realizing quality control of the compound.

The application provides a testing method for carbon coating completeness of a silicon-based material, and belongs to the technical field of material testing. The method comprises the following steps: placing a first mass of strong alkaline material and a second mass of testing silicon-based material in a reaction tank to perform a reaction, and obtaining first current information output by a detection device; placing the first mass of strong alkaline material and a contrast material in the reaction tank to perform a reaction, and obtaining contrast current information output by the detection device; drawing a test image based on the first current information and the contrast current information; and calculating the carbon coating completeness of the testing silicon-based material based on the peak area and the peak current value of the testing silicon-based material in the test image, the peak area and the peak current value of the contrast material, and the second mass and the mass of the contrast material. The testing method for carbon coating completeness of the silicon-based material provided by the application can simply and conveniently test the carbon coating completeness of the silicon-based material.

The invention belongs to the field of chemistry, and relates to a method and a system for rapidly detecting TiC in carbide slag. The method comprises the following steps: preparing a standard sample: preparing a series of carbide slag standard samples with known TiC content; acquiring XRD (X-Ray Diffraction) data: scanning the standard sample and the sample to be detected by using an X-ray diffractometer in a range of 2theta = 34-38 degrees to obtain a diffraction pattern; processing data and drawing a standard working curve: extracting a characteristic diffraction peak of TiC at 2theta = 36.1 + / -0.2 degrees, carrying out area integration, and establishing a standard working curve of the TiC content and a peak area integral value; and determining an unknown sample: carrying out the same treatment on the sample to be detected, substituting the peak area integral value into the standard working curve, and calculating to obtain the TiC content. According to the method, a diffraction peak with a diffraction angle 2theta of 36.1 degrees is adopted for fitting and then quantitative analysis is performed, so that the problem of long consumed time of an existing method for measuring the content of TiC in the carbide slag is solved.

The present application relates to a kind of chromatographic data optimization processing method of gas chromatograph, belong to data analysis technical field, comprising: based on the detection data of septum, determine the aging state grade of septum;Based on the aging state grade of septum and the material of septum, determine the release material of septum;Obtain the chromatographic data of sample analysis by gas chromatograph, remove the interference peak corresponding to the release material of septum from chromatographic data, generate first chromatographic optimization data;Based on first chromatographic optimization data and the aging state grade of septum, determine sample material loss compensation numerical value, and optimize chromatographic peak area value in first chromatographic optimization data, generate second chromatographic optimization data.The method is based on septum aging prediction, interference peak removal and quantitative correction linkage, both solve the problem of peak shape pollution, and also solve the problem of quantitative inaccuracy caused by aging, and then the reliability of gas chromatographic data and the accuracy of analysis result can be improved.

The invention relates to the technical field of medicines, in particular to a process quality control method of semeglutide, which is characterized in that a compound 1 has serious solution instability and can be quickly degraded along with time, and in a subsequent synthesis process, it must be ensured that an intermediate which is prepared freshly or is confirmed to be qualified in purity is used, and high performance liquid chromatography process monitoring is introduced. The invention provides a high performance liquid chromatography real-time monitoring method matched with a compound 1 to accurately control the reaction process so as to effectively inhibit an impurity chain reaction caused by degradation of raw materials, and for the characteristics of instability and continuous decomposition of the compound 1 in a solution, the invention provides a high performance liquid chromatography real-time monitoring method matched with the compound 1. The raw material conversion rate and the generation conditions of key over-modified impurities 1 and 2 can be synchronously monitored in the reaction process, and the raw material peak area smaller than or equal to 2.0% and the specific impurity peak area smaller than or equal to 5.0% (or 2.0%) serve as scientific and accurate reaction termination criteria. According to the active process control strategy, accumulation of impurities is inhibited from the source, and the problems of inaccurate feeding and batch difference caused by degradation of intermediates are solved.

This application provides a ternary cathode material, its preparation method, and its application. The ternary cathode material includes materials that satisfy 0 < P. cycle ≤1, where; S0 and S1 are the peak areas of the number distribution curves of the initial cathode material and the cathode material after powder pressing, respectively, in au; BET0 and BET1 are the specific surface areas of the initial cathode material and the cathode material after powder pressing, respectively, in m. 2 / g; α represents the Li / Ni mixing ratio of the initial cathode material, expressed in %. By constructing a quantitative correlation model of mechanical stability (S), interface properties (BET), and structural defects (α), the accurate prediction and optimization of the material's cycle performance can be achieved.

Surface-treated spherical silica, having a median diameter d50 of 0.5 μm to 20 μm, a product A×d50 of a BET specific surface area A (m2 / g) and the median diameter d50 (μm) being 2.7 (μm·m2 / g) to 5.0 (μm·m2 / g), a peak area of an amine in chromatography being 70% or more of a theoretical value, and a symmetry coefficient S of 8 or less in the chromatography.

The invention discloses a method for detecting related impurities of piracetam by high performance liquid chromatography. The detection method comprises the following steps: preparing a test solution and diluting to obtain a contrast solution; respectively preparing reference substance solutions of impurities A, B, C and D as positioning solutions; under the same chromatographic condition, analyzing each positioning solution, and determining the retention time of an impurity peak; sequentially injecting the test solution and the contrast solution, identifying impurity peaks in the test solution according to retention time, integrating to obtain a peak area (Ai), and integrating a main peak of the contrast solution to obtain a peak area (Astd); the single impurity content (%) is calculated according to the formula: the single impurity content (%) = Ai / (Astd * D) * 100%, and D is the dilution ratio of the contrast solution relative to the test solution. The method has the advantages of strong specificity and high separation degree, and can effectively realize simultaneous separation and quantification of multiple impurities.

Time-of-flight mass spectrometry methods, which include: Digitizing an initial signal output by an ion detector to generate an initial digitized signal; Detecting one or more peaks in the first digitized signal and determining a first area S0 of the one or more peaks and a first arrival time T0 of the one or more peaks, thereby forming a first list of data pairs; and Determine whether the first surface S0 is a first threshold surface S max exceeds or does not exceed the first threshold area S max a peak area that indicates an essentially simultaneous arrival of two ions which the ion detector cannot resolve, and where, when it is determined that the first area S0 is the first threshold area S maxdoes not exceed, the procedure further comprises recording the first area S0 and the first arrival time T0 or data derived from the first area S0 and the first arrival time T0 in a first histogram, and wherein, if it is determined that the first area S0 is the first threshold area S max The procedure includes not including the first area S0 and the first arrival time T0, or data derived from the first area S0 and the first arrival time T0, in the first histogram.

The application discloses a kind of insulating oil dissolved gas on-line monitoring device's mark gas self-calibration method and system, comprising: under the condition of normal mark gas pressure, continuous mark gas calibration is carried out;Determine the relative standard deviation of gas component concentration or peak height / peak area under continuous mark gas calibration, if the relative standard deviation is not less than the set threshold, continue to carry out mark gas calibration until the relative standard deviation is less than the set threshold, and the number of continuous calibration does not exceed the maximum calibration number;If the maximum calibration number is reached, the relative standard deviation still does not meet the requirements, then trigger calibration abnormal alarm;When the relative standard deviation meets the requirements, the average concentration of gas components or the average value of peak height / peak area is obtained, which is compared with the last calibration data and the first calibration data, and the termination calibration process, correction mark gas coefficient or trigger calibration abnormal alarm operation is carried out according to the comparison result. Periodic mark gas calibration of monitoring devices with different detection principles is realized, and the operation and maintenance workload is reduced.

The invention discloses a method for detecting organic matters in water, which relates to the field of analysis and detection and comprises the following steps: S1, preparing a plurality of standard solutions with different known concentrations; s2, drawing a standard curve according to the measured peak areas of the plurality of standard solutions and the corresponding known concentrations; s3, preparing a plurality of water sample solutions with different known concentrations; s4, obtaining an organic phase solution of the plurality of water sample solutions through liquid-liquid extraction; s5, obtaining peak areas of multiple organic phase solutions, and determining actually measured concentrations of the organic phase solutions according to the standard curve; s6, drawing a modeling curve; s7, performing liquid-liquid extraction on the water sample to be detected, collecting an organic phase, measuring the peak area of the organic phase through gas chromatographic analysis, and determining the actually measured concentration of the organic phase according to the standard curve; and obtaining the real concentration of the water sample to be detected by referring to the modeling curve according to the actually measured concentration. The extraction loss can be compensated, and the accuracy of detecting the organic matters in the water is high.

A film which is an ethylene tetrafluoroethylene copolymer film, characterized in that the crystallinity, which is determined by the following formula (1) from the peak area S 20 in the vicinity of 2θ = 20°, the peak area S 19 in the vicinity of 2θ = 19° and the peak area S 17 in the vicinity of 2θ = 17° in the diffraction intensity curve obtainable by an X-ray diffraction method, is from 55 to 70%, and the fraction of the quasicrystalline layer obtainable by the following formula (2) is from 10 to 20%, Crystallinity (%) = (S 19 + S 20) / (S 17 + S 19 + S 20) × 100 Percentage of quasicrystalline layer (%) = S 20 / ( S 17 + S 19 + S 20 ) × 100

The invention relates to a hierarchical porous titanium silicalite molecular sieve, a preparation method thereof and application of the hierarchical porous titanium silicalite molecular sieve in preparation of caprolactam. The titanium silicalite molecular sieve has the following FT-IR characteristics: in peak division results of an FT-IR spectrogram within the wave number range of 3100-3900 cm <-1 > of the titanium silicalite molecular sieve, the peak area of a spectral peak within the wave number range of 3720-3760 cm <-1 > is marked as Q1, the peak area of a spectral peak within the wave number range of 3660-3720 cm <-1 > is marked as Q2, and the peak area of a spectral peak within the wave number range of 3400-3600 cm <-1 > is marked as Q3; x1 defined by the following formula (1) is any numerical value between 0.8 and 2.2: X1 = Q2 / Q1 formula (1); x2 as defined by the following formula (2) is any numerical value between 2.0 and 5.5: X2 = Q3 / Q1 formula (2). The catalytic performance and the inactivation resistance of the molecular sieve in a catalytic reaction are improved, and the cyclohexanone-oxime conversion rate and the caprolactam selectivity in a cyclohexanone-oxime gas-phase Beckmann rearrangement reaction are improved.

The invention discloses a method for rapidly detecting five DBPs in drinking water by using ion chromatography, and relates to the technical field of safe and rapid detection of water quality of drinking water, and the method comprises the following steps: preparing a mixed standard solution containing a substance to be detected by using a standard substance, drawing a standard curve, and calculating a regression equation; injecting the to-be-detected sample into a filtering device, discarding the first 5mL-8mL of filtrate, loading the obtained collected liquid on a machine, and calculating the concentration of each substance according to the peak area of each substance in the to-be-detected sample and the regression equation; ionPac AS19 and IonPac AG19 are adopted, and the number of the IonPac AS19 and the The suppressor is an anion suppressor, and the model of the suppressor is SHY-A-7; the flow rate is 0.9 mL / min, the column temperature is 30 DEG C, and the sample injection volume is 0.5 mL; the current set value is 110 mV; a conductivity detector is adopted, and the sample determination time is 35 min; and performing gradient elution by using a KOH mobile phase. According to the invention, five disinfection by-products in a water sample can be rapidly and simultaneously detected.

This invention belongs to the field of analytical detection technology, specifically relating to a method for detecting the abundance of sulfur hexafluoride isotopes. The method for detecting the abundance of sulfur hexafluoride isotopes provided by this invention includes the following steps: gas chromatography-mass spectrometry (GC-MS) is used to detect the sample to obtain a total ion current chromatogram of sulfur hexafluoride; the GC-MS test conditions include: DB-5MS capillary column, split ratio of 20~80:1, and injection volume of 1~10µL; the mass spectrometry test conditions include: multiplier voltage +300~+600, and half-maximum width at half maximum (HWHM) below 0.6; the total ion current chromatogram of sulfur hexafluoride is then analyzed... 32 SF5 + , 33 SF5 + and 34 SF5 + Extract ions and obtain 32 SF5 + , 33 SF5 + and 34 SF5 + The peak area was calculated. 32 SF5 + , 33 SF5 + and 34 SF5 + The abundance of [the substance / method / method]. The detection method provided by this invention has the advantages of being economical, having a fast analysis speed, and high accuracy.

The invention discloses a preparation and detection method of a water-nourishing and liver-clearing beverage material standard, a preparation process of the water-nourishing and liver-clearing beverage material standard, an HPLC content determination method and a fingerprint spectrum establishment method. Under the content determination method, the chromatographic peak shapes of the components are symmetrical, the separation effect is remarkable, and excellent stability, specificity, linear response, repeatability, precision and accuracy are shown. 15 common peaks are successfully obtained by accurately recording fingerprint characteristics and utilizing a reversed-phase high-performance liquid chromatography technology, relative retention time and relative peak area of the common peaks are calculated by taking geniposide as a reference peak, and 8 common peaks are further identified through comparison of reference substances. The established fingerprint spectrum method also has the characteristics of good chromatographic peak shape, high separation degree, stable method, excellent repeatability, high precision and the like. The invention provides a set of comprehensive and reliable substance standard quality control reference system of the water-nourishing and liver-clearing beverage, and provides a scientific basis for the overall quality evaluation of the water-nourishing and liver-clearing beverage.

The present disclosure provides a 1,3-butylene glycol product, having, according to a gas chromatographic analysis performed under predetermined conditions, a peak ratio of 2000 ppm or lower appearing in a relative retention time ranging from 1.6 to 1.8, provided that the relative retention time for a peak of 1,3-butylene glycol is 1.0. The present disclosure also provides a 1,3-butylene glycol product, having, according to a gas chromatographic analysis performed under predetermined conditions, a peak area ratio of 100 ppm or lower appearing in a relative retention time ranging from 1.35 to 1.45, provided that the relative retention time for a peak of 1,3-butylene glycol is 1.0. The present disclosure also provides a 1,3-butylene glycol product, having, according to a gas chromatographic analysis performed under predetermined conditions, a peak area ratio of 1000 ppm or lower appearing in a relative retention time ranging from 2.3 to 2.4, provided that the relative retention time for a peak of 1,3-butylene glycol is 1.0.

The invention discloses a method for rapidly and efficiently detecting 84 kinds of PFAS in a complex water environment. The scope of the method covers 84 kinds of traditional and novel PFAS with ultra-short chains, short chains and long chains. The detection method comprises the following steps: diluting a water sample to be detected, adjusting the pH value, adding an internal standard substitute, and standing. Purifying the diluent by adopting a solid-phase extraction method, and sequentially eluting and carrying out nitrogen blowing concentration to obtain an eluent; gCB is added to purify eluent, and NIS is added to correct instrument errors before detection. And detecting the to-be-detected liquid by using a high performance liquid chromatography tandem mass spectrometer, and combining the internal standard concentration with the standard curve of the peak area of the to-be-detected PFAS to obtain the concentration of the PFAS in the to-be-detected complex water sample. According to the method, the detection limit is 0.5-50 ng / L, the matrix adding standard recovery rate is 60.3-132%, and the NIS recovery rate is 61.8-135%. The detection method is low in detection limit, good in reproducibility, high in recovery rate and capable of meeting analysis requirements.

The invention relates to a flavor substance component detection method and device, a detection system, a storage medium and a product. The method comprises the following steps: acquiring an essence sample to be detected and an internal standard substance matched with the essence sample; preparing a plurality of target samples according to the essence sample and the internal standard substance in combination with a mother liquor dilution distribution method; analyzing and detecting the target sample according to a gas chromatography-mass spectrometry method, and correcting through the peak area of the internal standard substance to obtain a relative peak area; determining a conversion factor between different sampling methods according to the relative peak area of the bridge compound in the target sample; according to the conversion factor, standardizing the relative peak area corresponding to the to-be-detected object under different sampling methods to obtain a standard peak area; and according to the standard peak area, determining the detection result of the substance components in the essence sample. Therefore, the conversion factor is determined by means of the internal standard substance and the bridge compound, standardized fusion of cross-method data is realized, and indexes such as contribution of each component to the top fragrance of the essence, core flavor intensity and the like are accurately quantified.

Provided is an optical resin capable of suppressing the occurrence of birefringence due to stress such as internal stress and external stress. An optical resin, in which, regarding a 13C-NMR spectrum of the resin, when a range in which a chemical shift is 141 ppm or higher and 147 ppm or lower is defined as a first range, and a range in which a chemical shift is 135 ppm or higher and 141 ppm or lower is defined as a second range, a ratio of a peak area of a peak in the first range to a peak area of a peak in the second range is 0.55 or less.

The invention provides a method for judging the infiltration effect of a battery cell. The method comprises the following steps: firstly, judging the minimum content M1 of an additive in an electrolyte; then providing a plurality of second battery cells with the additive content of M1 and the infiltration time gradient change; forming the plurality of second battery cells, collecting a dQ / dV curve, calculating the film forming peak area of the additive, and recording the corresponding electrolyte infiltration time as T1 when the film forming peak area is not increased any more; injecting an electrolyte containing an additive with M1 content into a plurality of third battery cells, performing infiltration for T1 time, then performing formation, collecting a dQ / dV curve, calculating the film-forming peak area of the additive, and recording the average value of the calculated film-forming peak areas of all the third battery cells as A1; and when the film-forming peak area corresponding to the to-be-detected battery cell is greater than or equal to A1, determining that the infiltration is qualified, otherwise, determining that the infiltration is unqualified. According to the method, the infiltration effect before formation can be judged by calculating the film forming peak area of the electrolyte additive.