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Figure 6
Representative fluorescence spectra. The single-pixel spectrum shows counts accumulated in 0.1 s exposure time. The cumulative spectrum is the sum of all spectra from the full sample area. It can be clearly seen that the cumulative spectrum shows fluorescence peaks of all elements present in the sample area while the single-pixel spectrum only shows those elements found in that particular pixel region. Also, it can be noticed that the Cu/Zn ratio in the single-pixel spectrum is not the same as the ratio in the cumulative spectrum representing the whole sample.

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SYNCHROTRON
RADIATION
ISSN: 1600-5775
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