Summary
In this study the concentrations of P, S, Cl, K, Ca, Mn, Fe, Zn and Br in twenty-nine brands of national and international beers were determined by synchrotron radiation total reflection X-ray fluorescence analysis (SR-TXRF). The results were compared with the limits established by the Brazilian legislation and the nutritional values established by National Agricultural Library (NAL, USA). The measurements were performed at the X-Ray Fluorescence Beamline at Brazilian National Synchrotron Light Laboratory, in Campinas, São Paulo, Brazil, using a polychromatic beam for excitation. A small volume of 5 ml of beers containing an internal standard used to correct geometry effects was analyzed without pretreatment. The measuring time was 100 seconds and the detection limits obtained varied from 1 mg . l-1 for Mn and Fe to 15 mg . l-1 for P.
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Moreira, S., Vives, A., Zucchi, O. et al. Analysis of beers from Brazil with synchrotron radiation total reflection X-ray fluorescence. J Radioanal Nucl Chem 270, 167–171 (2006). https://doi.org/10.1007/s10967-006-0325-0
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DOI: https://doi.org/10.1007/s10967-006-0325-0