6 sept. 2017

Sub-sample and sub-scan concept

When we analyzed heterogeneous samples, it is normal to use large cups. The cups rotate and stops in certain places called sub-samples (suppose eight). At each sub-sample several sub-scans (normally  four) are acquired.
So we have eight sub-samples spectra composed of the average of four sub-scans each. In total we have thirty two scans.
We can get a prediction of each of the sub-samples to get the eight predictions and calculate the standard deviation for every constituent in order to see the heterogeneity of the sample composition.
We can export the average spectrum of all the sub-samples,  the eight spectra of the eight sub-samples or the thirty two total sub-scans for further study.

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