Metals distribution and investigation of L'vov platform surface using principal component analysis,multi-way principal component analysis,micro synchrotron radiation X-ray fluorescence spectrometry and scanning electron microsocpy after the determina

摘要

This work describes the use of different strategies/techniques,such as scanning electron microscopy(SEM),multivariate anlaysis (principal component anlaysis (PCA) and micro synchrotron radiation X-ray fluorescence (muSRXRF),in order to extract information about plat form morphology,metals distribution on its surface,and heperformance of conventional and permanent modifiers after slurry analyses using electrothermal atomic absorption spectrometry(ET AAS).Withmultivariate analysis it was possible to select Zr (500 mug for each 50 heating cycles) as a permanent chemical modifier for the determination of Alin milk powder slurry samples.Employing multi-way PCA and SEM,it was possible to note the differences in morphology between platforms permanetly treatd with Zr and those conventionally treated with Mg(NO_3)_2.The use of PCA and SEM also allowed finding similarities between new platforms,and those with and without Zr treatment.Using the muSRXRF it was possible to establish metals distribution on the L'vov platform and compare the performance of conventional[Mg(NO_3)_2] and permanent 9Zr) modifiers.