Natural uranium isotopes and 226Ra in surface and groundwater from a basin of a semiarid region in Brazil

Autor:	Romilton dos Santos Amaral, Lino Angel Valcárcel Rojas, Zahily Herrero Fernández, José Araújo dos Santos Júnior, Josineide Marques do Nascimento Santos, José Antonio Corcho Alvarado, Marvic Ortueta Milan, Stefan Röllin
Rok vydání:	2020
Předmět:	Activity ratios Isotope Health Toxicology and Mutagenesis Water source Public Health Environmental and Occupational Health chemistry.chemical_element Natural uranium Structural basin Uranium 010403 inorganic & nuclear chemistry 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry Radium Nuclear Energy and Engineering chemistry Environmental chemistry Environmental science Radiology Nuclear Medicine and imaging Spectroscopy Groundwater
Zdroj:	Journal of Radioanalytical and Nuclear Chemistry. 326:1081-1089
ISSN:	1588-2780 0236-5731
Popis:	This research aimed to get information about the uranium and radium activity concentrations in surface and ground water in a semiarid region in Brazil. Mean (and range) activity of 0.46 (0.01–1.8), 0.015 (0.0004–0.066) and 0.32 (0.09–1.32) Bq L− 1 were found for 234U, 235U and 238U, respectively. Uranium radioisotopes account for the higher radioactivity in surface and groundwater, 226Ra was found only in few groundwater samples (0.09–0.61 Bq L− 1). 226Ra/238U (0.15–0.43) and 234U/238U (1.18–1.86) activity ratios are indicative of radioactive disequilibrium in groundwater. Expected effective doses from few water sources can be considered significant if untreated water is used for drinking.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1f12ba33f8b37a656555f818a726b96f https://doi.org/10.1007/s10967-020-07393-1 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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