LASNPA & WONP-NURT 2017

Elemental analysis of peloids from some Cuban spas using INAA

24 Oct 2017, 09:30

30m

Room “Fernando Portuondo”

Parallel Talk Nuclear Analytical Techniques and Applications in Art, Archeology, Environment, Energy, Space and Security Parallel Sessions - NAT

Speaker

Oscar Díaz Rizo (Instituto de Tecnologías y Ciencias Aplicadas, Universidad de La Habana (InsTEC-UH), La Habana, Cuba.)

Description

Peloids from some Cuban spas (San Diego, Elguea, Santa Lucía, Cajío and Colony) have been studied using Instrumental Neutron Activation Analysis (INAA). Concentrations of 30 major, minor and trace elements in the peloids are reported, including an important group of REE (La, Ce, Nd, Sm. Eu, Gd, Tb, Tm and Yb). No difference is observed for metal contents (including REE) determined for raw and maturated peloids from San Diego spa. Elemental concentrations are compared with other worldwide reported peloids. The iron-normalization using raw (non-matured) mud from San Diego spa as reference material shows that an anthropogenic metal input is present in the Elguea, Cajío and Colony spas. The measured REE contents are in the same order of magnitude as those reported for Earth’s upper crust average shales and muds as well as with worldwide reported peloids. However, the behavior of the normalized-to-chondrites REE shows different patterns for Cuban peloids matured with marine and fresh waters, respectively.