5 results about "Microanalysis" patented technology

The utility model provides a kind of ion grinding high-resolution in-situ microscopic analysis device, the ion grinding high-resolution in-situ microscopic analysis device includes vacuum chamber;Sample stage for carrying the sample to be measured is set in vacuum chamber;Ion grinding unit, the ion grinding unit includes the ion beam emission end extended into vacuum chamber;High-resolution in-situ microscopic analysis unit, the high-resolution in-situ microscopic analysis unit includes the image acquisition end extended into vacuum chamber;And with the processor of high-resolution in-situ microscopic analysis unit electrical connection;The ion grinding unit is used to emit ion beam to the sample to be measured and is ground, obtains the target cross section of target area;The high-resolution in-situ microscopic analysis unit is used to obtain the two-dimensional image of the target cross section;The processor is used to carry out three-dimensional reconstruction to the two-dimensional image, obtains the three-dimensional imaging of the target area.

The present application relates to a kind of low content component energy spectrum analysis method, belong to metallurgical dust resource utilization and material microanalysis technical field.The method includes: preparation sample exposure center section, obtain full section image by scanning electron microscope image splicing, and different analysis regions are divided;Low multiple energy spectrum area scanning is carried out in each analysis region, and the element distribution and zinc content data of multiple positions are obtained;For each analysis region, the arithmetic mean of residual zinc content is calculated as the regional representative value;Based on the characteristic data image of zinc element distribution, high multiple energy spectrum area scanning and point scanning are carried out on the characteristic micro area of zinc element aggregation to analyze the phase form and element composition of residual zinc.The present application realizes the quantitative, zoned, spatial positioning and multi-scale characterization of residual zinc content distribution and occurrence state in metallized pellet by "overall observation-zoned statistics-micro area analysis" progressive analysis, provides more accurate data support for process optimization.

This invention belongs to the field of pathogen activity analysis technology. It discloses an optical chemiluminescence trace analysis system for pathogenic bacteria. The system includes: constructing a set of discrete reaction sites of the target pathogenic bacteria on an immobilized capture interface in the sample; performing a chemiluminescence reaction on the set of discrete reaction sites to generate a local chemiluminescence response sequence and a luminescence spatial distribution sequence; obtaining the spatial response trajectory of the target pathogenic bacteria by analyzing the lighting sequence of each discrete reaction site and the expansion and aggregation characteristics in the site's neighborhood; obtaining the pathogenic bacteria activity determination result by analyzing the consistency of continuous luminescence at different discrete reaction sites and the branching and converging characteristics of the outward expansion path in the spatial response trajectory; and outputting a conclusion on the presence of pathogenic bacteria. This invention improves the stability of trace pathogenic bacteria detection and enhances the ability to distinguish weak positives and activity.

Title: Pollutant Microanalyzer and Associated Process The invention relates to a device for analyzing a pollutant contained in a gaseous phase, comprising: - sampling means capable of sampling said gaseous phase and generating a flow stream, - capture means capable of allowing said gaseous phase and the trapping liquid solution to flow on either side of a porous membrane, and of transferring said gaseous pollutant to the trapping solution, reaction means connected to the capture means, capable of reacting the enriched trapping solution with the pollutant, to generate a reaction product, - means for analyzing the reaction product capable of analyzing said reaction product in solution and deducing therefrom a measurement of the concentration of said pollutant in the gaseous phase.The device is characterized in that it also comprises: - a reference gas inlet connected to the capture means and capable of supplying the capture means with a flow of reference gas, and - a valve device such as a three-way valve disposed upstream of the capture means to supply the capture means alternately with said gaseous phase comprising the pollutant, or with said reference gas. Figure for the abbreviation: Fig. 1,

The application provides a method for in-situ micro-area determination of mineral element content, and relates to the field of mineral measurement. The method for in-situ micro-area determination of mineral element content comprises the following steps: preparing a polished section of an ore sample; identifying target mineral particles in the polished section and taking a backscattered image to obtain the content of target elements in multiple particles; measuring the area of each particle to be measured, calculating the proportion of the area of each particle to be measured in the total area of all particles to be measured, and obtaining the area occupancy rate of each particle; multiplying the content of the target element of each particle by the corresponding area occupancy rate, summing up, and obtaining the area-weighted average content of the target element. The element content value obtained by the method can more truly reflect the average chemical composition of the mineral in the whole ore, provide more accurate data basis for the prediction of beneficiation process indicators, and solve the problem of ignoring the influence of the size of the mineral particle size on the representativeness of the final data.