the sample preparation procedures must be efficient to extract and pre concentrate the analytes,
as well as to eliminate the interferents due to the high complexity of the biological samples(e.g.thepresenceofmacromolecules),
low concentrationsofanalytesandlowsamplevolumeavailability.
Accordingtotheliterature,mineralizationproceduresusingdi-
gestorblocks,ovensand/ormicrowaveovensarethemostused
methods forbiologicalsamplepreparationofmetalanalyses [2–4].
Despite thewideuseofthesetechniques,somedrawbackscan
also bepointedout,suchastheneedtohighacidicconcentrations