Energy dispersive X-ray fluorescence applied to mapping of tree stems in Campinas, São Paulo

Química Nova

Universidade Estadual de Campinas, Campinas, Brasil¹  Col, José Augusto da¹  Bueno, Maria Izabel Maretti Silveira¹ 

关键词: tree rings;    dendrochemical mapping;    X-ray fluorescence.;   

DOI  :  10.1590/S0100-40422009000900032

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Dendrochemistry is based on the determination of elements retained in tree rings, which can be useful to characterize environmental occurrences. This work shows elemental mappings obtained by EDXRF of the cross section of a tree stem. The tree is originated from a polluted area in Campinas, São Paulo. Some profiles, as the sulfur one, show variations that can be attributed to external contributions, whereas the silicon one can be inferred to a protection defense natural mechanism. Besides being simultaneous and multielementar, the main advantages here are its performance through a non-destructive sample treatment and the ease of operation of XRF equipments.

【 授权许可】

Unknown