Hydrochemical and uranium isotopes study in spas of São Paulo and Minas Gerais States

• Grant number: 13/24360-6
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2014
• End date: February 29, 2016
• Field of knowledge: Physical Sciences and Mathematics - Geosciences
• Principal Investigator: Daniel Marcos Bonotto
• Grantee: Daniel Marcos Bonotto
• Host Institution: Instituto de Geociências e Ciências Exatas (IGCE). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
• Associated research grant(s): 14/50743-2 - Environmental tracers of water resources management, AP.R SPRINT

Abstract

This research intends to investigate the presence of the natural uranium isotopes U-234 and U-238 in spas occurring at about 15 municipalities in southeast Brazil (São Paulo and Minas Gerais States), where questions focusing the spring waters quality in terms of radiological aspects will also be focused as many of them are ingested by the population utilizing the spas. The potentiality of the use of the isotopic model of the dissolved U on the study of mixing processes involving different water types will be also evaluated taking into account physical and physical-chemical parameters (temperature, pH, redox potential Eh, conductivity) as well major dissolved cations and anions (sodium, potassium, calcium, magnesium, bicarbonate, carbonate, choride, sulfate, nitrate and fluoride) due to their possible implications to the transport of uranium in solution. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BONOTTO, DANIEL MARCOS. Hydrogeochemical study of spas groundwaters from southeast Brazil. JOURNAL OF GEOCHEMICAL EXPLORATION, v. 169, p. 60-72, OCT 2016. (13/24360-6)