DETERMINAÇÃO DE FÓSFORO EM PALEOSSEDIMENTOS EMPREGANDO ESPECTROMETRIA DE FLUORESCÊNCIA DE RAIOS-X PORTÁTIL

Phosphorus (P) is an important chemical marker of the past human presence, because, besides indicates the localization of possible archaeological sites, also, contributes to clarify doubts regarding to origin, duration and to specific functions that were developed in them. The present study aimed to obtain a simple, accurate, fast and non-destructible analytical method to determine phosphorus in sediment samples of the Toca da Baixa dos Caboclos archaeological site, an enclave of the Serra da Capivara National Park, Piauí, Brazil. For the proposed method, a portable energy dispersive X-ray fl...