Open AccessJournal Article
Characterization of source rocks and groundwater radioactivity at the chihuahua valley
M. Rentería Villalobos,M.E. Montero Cabrera,M. Reyes Cortés,E. F. Herrera Peraza,A. Rodríguez Pineda,G. Manjón Collado,R. García Tenorio,T. Crespo,M. Valenzuela Hernández +8 more
TLDR
In this article, a caracterización of rocas fuentes de the radiactividad in el valle de Chihuahua was presented. But, as part of un proyecto cientifico sobre actividad alfa en agua subterranea de consumo humano in la ciudad de Chahuas, se ha desarrollado the caracteríncia de las rocas.Abstract:
Como parte de un proyecto cientifico sobre actividad alfa en agua subterranea de consumo humano en la ciudad de Chihuahua, se ha desarrollado la caracterizacion de las rocas fuentes de la radiactividad en el valle de Chihuahua. Se determino tambien la actividad de muestras de agua subterranea y de sedimentos. La actividad de los isotopos de las series radiactivas en las rocas se obtuvo usando espectroscopia gamma de alta resolucion. Algunos valores representativos son 50 Bq/kg para el valor medio de la actividad del Bi-214 y 121.5 Bq/kg para el valor mas alto al oeste de la ciudad. La actividad de los sedimentos extraidos durante la perforacion de pozos para agua potable, se determino usando un detector de NaI(Tl). En la formacion montanosa de San Marcos se localizo un deposito de uranio no publicado. Sus afloramientos se encuentran dentro de la cuenca del valle Chihuahua-Sacramento y se realizo la caracterizacion de su radiactividad. Se determinaron actividades por espectrometria alfa de agua, plantas, sedimentos y peces extraidos en emplazamientos cercanos a los afloramientos de minerales de uranio. La actividad del agua en la presa de san Marcos llego a 7.7 Bq/L. La actividad de pescados de la misma presa alcanza 0.99 Bq/kg. Se obtuvieron conclusiones sobre la contaminacion del agua subterranea al norte de la ciudad de Chihuahua.read more
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Journal ArticleDOI
A review of electrodeposition methods for the preparation of alpha-radiation sources.
TL;DR: This paper addresses an approach to the theory and practice of electrodeposition processes of alpha-emitting nuclides, including the rotating disk electrode technique.
Journal ArticleDOI
Evolution of chemical species during electrodeposition of uranium for alpha spectrometry by the Hallstadius method
Angela M. Beesley,M.T. Crespo,Norbert Weiher,Nikolaos Tsapatsaris,J.S. Cózar,H. Esparza,C.G. Méndez,P. Hill,Sven L. M. Schroeder,María E. Montero-Cabrera +9 more
TL;DR: The morphology and composition of uranium alpha sources with co-deposited platinum have been investigated and it is suggested that the presence of platinum initially increases the concentration of hydroxyl species in the deposits, which then act as centres for subsequent preferential uranium precipitation.
Journal ArticleDOI
Uranium-series isotopes transport in surface, vadose and ground waters at San Marcos uranium bearing basin, Chihuahua, Mexico
Juan Carlos Burillo Montúfar,Manuel Reyes Cortés,Ignacio Alfonso Reyes Cortés,Ma. Socorro Espino Valdez,Octavio Hinojosa de la Garza,Diana Pamela Nevárez Ronquillo,Eduardo Herrera Peraza,Marusia Renteria Villalobos,María Elena Montero Cabrera +8 more
TL;DR: In this article, the physicochemical parameters and activity concentrations of several 238 U-series isotopes have been determined in surface, vadose and ground waters at San Marcos in Chihuahua, Mexico.
Journal ArticleDOI
Lifetime Effective Dose Assessment Based on Background Outdoor Gamma Exposure in Chihuahua City, Mexico
Sergio Luevano-Gurrola,Angelica Perez-Tapia,Carmelo Pinedo-Alvarez,Jorge Carrillo-Flores,María E. Montero-Cabrera,Marusia Rentería-Villalobos +5 more
TL;DR: The natural background gamma dose received by the inhabitants of Chihuahua City is high and mainly due to the geological characteristics of the zone, according to the radiological point of view.
Journal ArticleDOI
Use of alpha spectrometry for analysis of U-isotopes in some granite samples
TL;DR: In this paper, the authors used the a-spectrometers of NMA, EAEA and IAEA for the analysis of U-isotopes in the soil of Gabal Gattar and El Missikat localities.
References
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Book
Uranium-series disequilibrium: applications to earth, marine, and environmental sciences. 2. ed
M. Ivanovich,R. S. Harmon +1 more
TL;DR: The phenomenon of radioactivity geochemistry of actinides and their daughters uranium-series desequilibrium applications applications in geochronology chemical procedures spectroscopic methods mass spectrometry and applications to uranium series disequilibrium igneous rocks uranium series mobilization and surface hydrology ground water.
Journal ArticleDOI
Mineral-Melt Partitioning of Uranium, Thorium and Their Daughters
Jonathan D. Blundy,Bernard Wood +1 more
TL;DR: In this paper, the authors present a case for the importance of partitioning of the U-series elements in order to understand how parent and daughter nuclides of these elements are fractionated one from another under the conditions of interest.
Journal ArticleDOI
Natural radioactivity in groundwater and estimates of committed effective dose due to water ingestion in the state of Chihuahua (Mexico).
L. Villalba,María E. Montero-Cabrera,G. Manjón-Collado,L. Colmenero-Sujo,Marusia Rentería-Villalobos,A. Cano-Jiménez,A. Rodríguez-Pineda,I. Dávila-Rangel,L. Quirino-Torres,E. F. Herrera-Peraza +9 more
TL;DR: In Aldama and Chihuahua cities the average and many individual wells showed activity concentration values of uranium exceeding the Mexican norm of drinking water quality, and a linear correlation between uranium and radon dissolved in groundwater of individual wells was observed.