A CEM MDS-81D microwave oven, equipped with 12 Teflon PFA
and reaching an internal pressure of 830 kPa, was used for wine
sample digestion.
A Varian Spectra AA-10 Plus spectrophotometer was used for
metal determination involving atomic absorption spectrometry
(AAS) and atomic emission spectrometry (AES). It is equipped with
unielemental hollow cathode lamps, a Czerny-Turner type monochromator,
a Mark VI type gas-burner, a photomultiplier and a
deuterium lamp background correction system.