Analytical procedures for determining Pb and Sr isotopic compositions in water samples by ID-TIMS

Few articles deal with lead and strontium isotopic analysis of water samples. The aim of this study was to define the chemical procedures for Pb and Sr isotopic analyses of groundwater samples from an urban sedimentary aquifer. Thirty lead and fourteen strontium isotopic analyses were performed to t...

Full description

Saved in:
Bibliographic Details
Published in:Química Nova 2008, Vol.31 (7), p.1836-1842
Main Authors: Martins, Veridiana, Babinski, Marly, Ruiz, Izabel, Sato, Kei, Souza, Solange, Hirata, Ricardo
Format: Article
Language:English
Subjects:
CHEMISTRY, MULTIDISCIPLINARY
groundwater
Pb-Sr isotopes
TIMS
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Few articles deal with lead and strontium isotopic analysis of water samples. The aim of this study was to define the chemical procedures for Pb and Sr isotopic analyses of groundwater samples from an urban sedimentary aquifer. Thirty lead and fourteen strontium isotopic analyses were performed to test different analytical procedures. Pb and Sr isotopic ratios as well as Sr concentration did not vary using different chemical procedures. However, the Pb concentrations were very dependent on the different procedures. Therefore, the choice of the best analytical procedure was based on the Pb results, which indicated a higher reproducibility from samples that had been filtered and acidified before the evaporation, had their residues totally dissolved, and were purified by ion chromatography using the Biorad® column. Our results showed no changes in Pb ratios with the storage time.
ISSN:0100-4042
1678-7064
1678-7064
DOI:10.1590/S0100-40422008000700040