News in methods for automated analysis of mineral phases

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00007064%3AK01__%2F19%3AN0000033" target="_blank" >RIV/00007064:K01__/19:N0000033 - isvavai.cz</a>

Result on the web

<a href="https://epe.europol.europa.eu/" target="_blank" >https://epe.europol.europa.eu/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

News in methods for automated analysis of mineral phases

Original language description

Conference: "8th APST Working Group Annual Meeting Frankfurt", Germany Article in conference proceedings - "News in methods for automated analysis of mineral phases", p. 40-42 abstract: Most of the analytical methods described yield quantitative data for data comparison. One of the possibilities bringing to soil analysis quantitative data that can be used e.g. for statistical comparison of traces and reference samples among each other are systems of automatic analysis of mineral grains (based on SEM/EDS). These systems have been available at the market for several years, nevertheless, to date samples of mineral grains recovered from soil traces have been prepared into casting compounds and then have been cut into polished section forms. Only then were samples analysed in systems of automatic mineralogical analysis. Our laboratory for the first time carried out in cooperation with the producer a number of detailed experiments with analysis of samples prepared directly from mineral grains of a soil trace, fixed at an adhesive stub with carbon target in diameter of 30mm. Experiments were at first conducted with model samples prepared from known mineral phases and then with samples from common soils. Several series of random samples were taken in a final stage from different places and the ability to determine differences among individual sampling points was tested. It was found that the differences are traceable also among sampling sites that were at a distance less than 20m. Software can perform several types of analysis, and together with acquisition modes, makes for a large number of combinations. Each combination is always a compromise between time taken and the robustness of the analysis. Depending on the measurement parameters, the SEM images and spectroscopic data are collected simultaneously or in consecutive runs. The Analysis type determines the quality aspect of the collected data.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

50902 - Social sciences, interdisciplinary

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů