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An investigation about natural radioactivity, hydrochemistry, and metal pollution in groundwater from Calabrian selected areas, southern Italy

Caridi, F. ; Messina, M. ; D’Agostino, M.

Environmental earth sciences, 2017-10, Vol.76 (19), p.1, Article 668 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
An investigation about natural radioactivity, hydrochemistry, and metal pollution in groundwater from Calabrian selected areas, southern Italy
Autor: Caridi, F. ; Messina, M. ; D’Agostino, M.
Assuntos: Anthropogenic factors ; Antimony ; Aquifers ; Biogeosciences ; Cadmium ; Drinking water ; Earth and Environmental Science ; Earth Sciences ; Environmental law ; Environmental legislation ; Environmental Science and Engineering ; Geochemistry ; Geology ; Groundwater ; Groundwater pollution ; Heavy metals ; Hydrochemistry ; Hydrology/Water Resources ; Lead ; Legislation ; Mercury ; Natural radioactivity ; Original Article ; Oxidation ; Radiation ; Radioactivity ; Radioisotopes ; Radionuclide kinetics ; Radium ; Radium isotopes ; Radium radioisotopes ; Selenium ; Silver ; Spectrometry ; Terrestrial Pollution ; Uranium ; Water pollution
É parte de: Environmental earth sciences, 2017-10, Vol.76 (19), p.1, Article 668
Descrição: The increasing interest in radioactivity has brought about the need for an assessment of human exposure to radiation. It is, therefore, necessary to examine naturally occurring radioactivity in the environment, especially its occurrence in groundwater. The aim of this work was then to study the levels and behavior of the most significant natural radionuclides, also in order to improve the knowledge of the hydrochemical processes involved in the selected groundwater systems. Natural radioactivity in fifteen Calabrian groundwaters for human use was investigated through high-resolution gamma spectrometry (with a negative-biased Ortec HPGe detector) and liquid scintillation measurements. Particular attention was given on those radionuclides ( 3 H, 238 U, 226 Ra, and 228 Ra), which contribute in a significant way to the overall effective dose received by members of the public due to the intake of drinking water originating from groundwater systems. The activity concentration of 238 U varied from 1 to 51 mBq/L, as a result of the geology of the investigated area and of the oxidizing conditions that favored U dissolution. 226 Ra presented a broad range of activity concentrations (0.011–0.14 mBq/L), lower than uranium ones because radium occurs in groundwater under reducing conditions. Some heavy metals (Cd, Pb, Be, Hg, Ag, As, Tl, Sb, Se, and Ni) were also investigated through ICP-MS measurements and compared with the limits set by the Italian Legislation. Metals are released into the environment by both natural and anthropogenic sources; they leach into underground waters, moving along water pathways and eventually depositing in the aquifer.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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An investigation about natural radioactivity, hydrochemistry, and metal pollution in groundwater from Calabrian selected areas, southern Italy

Caridi, F. ; Messina, M. ; D’Agostino, M.

Berlin/Heidelberg: Springer Berlin Heidelberg

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