5 results about "Relative correction" patented technology

The application discloses a refinery gas composition determination method and related device, and relates to the field of gas analysis. The absolute correction factor of nitrogen and the relative correction factor corresponding to each stable gas are determined, and the absolute correction factor of the stable gas with relatively stable content in air is determined. Similarly, the absolute correction factor of each alkane is determined according to the absolute correction factor of methane and the relative correction factor of each alkane relative to methane, and the absolute correction factor of hydrogen is determined according to the content of hydrogen in the production sample containing hydrogen and the chromatographic peak area of hydrogen, wherein the chromatographic peak area of hydrogen is obtained by processing the production sample by a thermal conductivity detector. The determination of the absolute correction factor of each gas component is realized, and on the basis, the concentration of each component in the sample can be determined by combining the detection of the chromatographic peak area of each component of the refinery gas sample, thereby providing a reliable reference for subsequent resource utilization.

The invention provides an HPLC-QAMS (High Performance Liquid Chromatography-Quantitative Analysis Mass Spectrometry) synchronous quantitative detection method for four rare ginsenosides in cooked pseudo-ginseng, and belongs to the technical field of traditional Chinese medicine detection. According to the method, ginsenoside 20 (R)-Rg3 is taken as an internal reference, an HPLC-QAMS (High Performance Liquid Chromatography-Quantitative Amplified Mass Spectrometry) method is adopted, and simultaneous quantification of four ginsenosides is realized through verified relative correction factors; rSDlt; the method has the advantages of high accuracy (the recovery rate is 91.95-101.34%, RSDlt, 1.8%), high linearity (Rgt, 0.9997) and high stability (RSDlt, 3.5%), and the reference standard cost can be reduced by 75%. The QAMS method is excellent in green analysis score and blue applicability grade index. By analyzing 15 batches of samples, the consistency (relative to ESM, RE% lt, 5%) of the samples is confirmed, and the transfer rate of 20 (R) G-Rg3 is 85.82% by optimizing the extraction condition.

This invention relates to the field of aerosol analysis technology, and in particular to a method for predicting and quantitatively detecting the relative correction factor of monomeric raw materials in aerosols. The prediction method includes: obtaining the molecular structure of the target monomeric raw material; calculating multiple predefined molecular structure descriptors; and substituting the molecular structure descriptors into a prediction model established through multivariate quadratic regression fitting to calculate the predicted relative correction factor of the target monomer. This invention also provides a quantitative detection method based on the prediction model. This method requires only molecular structure information to accurately predict the relative correction factor, completely eliminating dependence on expensive and scarce chemical standards, significantly reducing detection costs, simplifying the process, and improving the efficiency of quantitative analysis of aerosol components and product development.

The application discloses a method for determining the content of five components in Baiyu ointment based on a quantitative analysis of multiple components, and relates to the technical field of drug detection. ′ The method uses tanshinone II A as an internal standard for quantitative analysis of multiple components, establishes the relative correction factors of 1,4-di[4-(glucose oxygen) benzyl]-2-isobutyl malonic acid ester, tanshinone I, 6-gingerol, beta, beta The content of each component in the Baiyu ointment is calculated through the relative correction factors, and the specific steps include: preparation of a test sample solution; preparation of a reference sample solution; chromatographic conditions and system suitability test; determination and calculation. The application overcomes the single and one-sided quality control of the Baiyu ointment, and has important significance for further improving the quality control level of the Baiyu ointment, guaranteeing the clinical curative effect and improving the related evaluation system.

This invention relates to the field of e-liquid analysis technology, and in particular to a method for component analysis and formulation of e-liquids. The invention uses GC-FID to obtain chromatographic data of the sample, combines this with a retention index prediction model for qualitative analysis, and combines a relative correction factor prediction model with an internal standard method for quantitative analysis. This invention overcomes the technical bottlenecks of traditional GC-FID, which relies on standard comparison for qualitative analysis and on individual calibration for quantification, achieving rapid, accurate, and low-cost analysis of all components of e-liquids. Based on this method, the complete formulation of the target e-liquid can be obtained efficiently, enabling rapid flavor blending. This invention also provides specific formulations for two e-liquid compositions: strawberry ice cream flavor and Pocari Sweat flavor. This invention provides efficient and reliable technical support for product imitation, new product development, and quality control of e-liquids.