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Estimating Natural Recharge by Means of Chloride Mass Balance in a Volcanic Aquifer: Northeastern Gran Canaria (Canary Islands, Spain)
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Radon in Groundwater of the Northeastern Gran Canaria Aquifer

Physics Department, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria 35017, Spain
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Academic Editor: Miklas Scholz
Water 2015, 7(6), 2575-2590; https://doi.org/10.3390/w7062575
Received: 10 April 2015 / Revised: 15 May 2015 / Accepted: 19 May 2015 / Published: 27 May 2015
(This article belongs to the Special Issue Study, Development and Management of Water in Volcanic Areas)
222Rn has been detected in 28 groundwater samples from the northeast of Gran Canaria (Canary Islands, Spain) utilizing a closed loop system consisting of an AlphaGUARD monitor that measures radon activity concentration in the air by means of an ionization chamber, and an AquaKIT set that transfers dissolved radon in the water samples to the air within the circuit. Radon concentration in the water samples studied varies between 0.3 and 76.9 Bq/L. Spanish radiological protection regulations limit the concentration of 222Rn for drinking water to 100 Bq/L, therefore the values obtained for all the analyzed samples are below this threshold. The hydrogeological study reveals a significant correspondence between the radon activity concentration and the material characteristics of the aquifer. For a selected group of samples with high radon concentrations, gross alpha activity has been determined to have values higher than the prescriptive screening level (0.1 Bq/L). View Full-Text
Keywords: radon activity; gross alpha; groundwater tracer; volcanic terrain; normative radon activity; gross alpha; groundwater tracer; volcanic terrain; normative
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Alonso, H.; Cruz-Fuentes, T.; Rubiano, J.G.; González-Guerra, J.; Cabrera, M.D.C.; Arnedo, M.A.; Tejera, A.; Rodríguez-Gonzalez, A.; Pérez-Torrado, F.J.; Martel, P. Radon in Groundwater of the Northeastern Gran Canaria Aquifer. Water 2015, 7, 2575-2590.

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