Trace elements determination in red and white wines using total-reflection X-ray fluorescence

摘要

Several wines produced in different regions from south of Brazil and available in markets in Rio de janeiro were analyzed for their contents of elements such as:P,S,Cl,Ca,Ti,Cr,Mn,Fe,Ni,Cu,Zn,Rb and Sr.Multi-element analysis was possible with simple sample preparation and subsequent analysis by total-reflection X-ray fluorescence using synchrotron radiation.The measurement was carried at the X-ray fluorescence beamline in the Synchrotron Light Source Laboratory in Campinas,Brazil.The levels of the various elements obtained were lower in the Brazilian wines than the values generally found in the literature.The present study indicates the capability of multi-element analysis for determining the contents of various elements present in wines coming from Brazil vineyards by using a simple,sensitive and precise method.