Integrated radiometric study in spas from São Paulo and Minas Gerais States

• Grant number: 16/03054-2
• Support Opportunities: Regular Research Grants
• Start date: August 01, 2016
• End date: October 31, 2018
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• 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
• City of the host institution: Rio Claro
• Associated research grant(s): 16/50327-4 - Urban water cycle as the basis for creating a research agenda for sustainable development, AP.R SPRINT

Abstract

This research intends to evaluate the radiological quality of groundwaters from 14 spas situated at southeast Brazil (São Paulo and Minas Gerais States), where all acquired information from previous studies focusing the radionuclides already analyzed (220Rn, 222Rn, 226Ra, 228Ra, 238U e 234U) will be integrated with those to be obtained from 210Pb and 210Po analysis as intended in this study. Additionally, the gross alpha and beta activities will be also evaluated, which are well-known parameters inserted in the guidelines established by the following legislation: WHO (2001) and Rule No. 2914 of the Brazilian Health Ministry. Several steps will be involved on the development of this project, among them: groundwater sampling; characterization of dissolved 210Pb and 210Po in the samples; characterization of the gross alpha and beta activities; statistical treatment of the data obtained; correlation of the data obtained here with other available radiometric and hydrochemical data in order to obtain a better understanding of each hydrogeochemical context; use of the data obtained on the evaluation of the grroundwaters quality in terms of radiological parameters. (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)

CASAGRANDE, M. F. S.; BONOTTO, D. M.. The use of gamma-rays analysis by HPGe detector to assess the gross alpha and beta activities in waters. Applied Radiation and Isotopes, v. 137, p. 1-11, JUL 2018. (16/03054-2, 15/03974-1)

BONOTTO, DANIEL MARCOS; MARINELLO ASSIS DE OLIVEIRA, ANA MARIA. Mobility indices and doses from Po-210 and Pb-210 activity concentrations data in Brazilian spas groundwaters. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, v. 172, p. 15-23, JUN 2017. (16/03054-2)

SOLER, ALBERT; BONOTTO, DANIEL MARCOS. Stable isotopes (H, O, S) signatures evidencing evolutionary trends of Brazilian spas groundwaters. JOURNAL OF GEOCHEMICAL EXPLORATION, v. 210, MAR 2020. (16/03054-2)