Radon in Groundwater of the Northeastern Gran  Canaria Aquifer

Aguilera, Héctor; Cruz-Fuentes, Tatiana; Rubiano, J.G.; Guerra, Jonay González; Cabrera, M.C.; Arnedo, M.A.; Tejera, A.; Rodríguez‐González, Alejandro; Torrado, Francisco José Pérèz; Martel, P.

doi:10.3390/w7062575

Cited by 34 publications

(17 citation statements)

References 29 publications

(33 reference statements)

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“…The occurrence of U-and Ra-bearing minerals of rocks and the degree of rock fracturing are the main factors influencing the 222 Rn concentrations of groundwater (e.g. Loomis et al, 1988;Ball et al, 1991;Vinson et al, 2009;Cinti et al, 2013;Alonso et al, 2015). Water temperature also affects the Rn concentration, since the 222 Rn solubility decreases as water temperature increases (Andrews and Wood, 1974;Roba et al, 2000;Clever, 2013).…”

Section: Radonmentioning

confidence: 99%

“…In an effort to provide an adequate supply of safe water for household consumption, geochemical characterization of groundwater resources in volcanic-hydrothermal areas and geochemical mapping of geogenic contaminants represent essential steps to define the necessary tools for decision-making in territorial planning (e.g. Rahman et al, 2005;Angelone et al, 2009;Baiocchi et al, 2013;Alonso et al, 2015;Cinti et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Anomalous concentrations of arsenic, fluoride and radon in volcanic-sedimentary aquifers from central Italy: Quality indexes for management of the water resource

Cinti

Vaselli²,

Poncia³

et al. 2019

Environmental Pollution

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659 water samples from springs and wells in the Sabatini and Vicano-Cimino Volcanic Districts (central Italy) were analyzed for arsenic (As), fluoride (F À) and radon (222 Rn) concentrations. Waters mostly sourced from a shallow and cold aquifer hosted within volcanic rocks, which represents the main public drinking water supply. Cold waters from perched aquifers within sedimentary formations and thermal waters related to a deep hydrothermal reservoir were also analyzed. The highest concentrations of As and F À were measured in the thermal waters and attributed to their enhanced mobility during waterrock interaction processes at hydrothermal temperatures. Relatively high concentrations of As and F À were also recorded in those springs and wells discharging from the volcanic aquifer, whereas waters hosted in the sedimentary units showed significantly lower contents. About 60% (As) and 25% (F À) of cold waters from the volcanic aquifer exceeded the maximum allowable concentrations for human consumption. Such anomalously high levels of geogenic pollutants were caused by mixing with fluids upwelling through faulted zones from the hydrothermal reservoir. Chemical weathering of volcanic rocks and groundwater flow path were also considered to contribute to the observed concentrations. Cold waters from the volcanic aquifer showed the highest 222 Rn concentrations, resulting from the high contents of Rn-generating radionuclides in the volcanic units. Approximately 22% of these waters exceeded the recommended value for human consumption. A specific Quality Index (QI), comprised between 1 (very low) and 4 (very high), was computed for each water on the basis of As, F À and 222 Rn concentrations and visualized through a spatial distribution map processed by means of geostatistical techniques. This map and the specific As, F À and 222 Rn maps can be regarded as useful tools for water management by local authorities to both improve intervention plans in contaminated sectors and identify new water resources suitable for human consumption.

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Section: Radonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anomalous concentrations of arsenic, fluoride and radon in volcanic-sedimentary aquifers from central Italy: Quality indexes for management of the water resource

Cinti

Vaselli²,

Poncia³

et al. 2019

Environmental Pollution

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“…Water contain radionuclides as natural components in various concentrations depending on their origin as discussed by different researchers (Duggal, Sharma, & Mehra, 2017;In acio, Soares, & Almeida, 2017;Mittal, Rani, & Mehra, 2016;Nevinsky, Tsvetkova, & Nevinskaya, 2015;Thabayneh, 2015). Radon levels in water has been studied by previous studies (Alonso et al, 2015). Radon is released into waters as a result of natural processes like decay of its parent nuclide 226 Ra.…”

Section: Introductionmentioning

confidence: 99%

Radiological assessment of wastewater treatment processes based on the use of coal ashes as a filters

Taoufiq

Laamyem

Boukhair

et al. 2018

Journal of Radiation Research and Applied Sciences

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a b s t r a c tCoal Fly Ash and Coal Bottom Ash are a solid waste generated from coal combustion. Recently, the management of these wastes has become an important subject for environmental researchers. Due to their physical and chemical characteristics, coal ashes were used in different fields like building material, agriculture and wastewater treatment. In the present investigation, a radiological assessment of Waste Water Treatment Plant (WWTP) based on the use of coal ashes as filters was performed. The WWTP under investigation uses four stages of treatment: Coal Fly Ash filtration, Coal Bottom Ash filtration and sand filtration. Radiation risk of coal ashes was evaluated by 2 techniques: Dosimetry alpha based on the use of LR115 detector and gamma ray spectrometer. The surface exhalation rate in coal ash samples were found to be below the world average 57600 mBq•m À2 h À1 and most of the coal ash samples show the value of Raeq less than the allowed upper limit of 370 Bq kg À1 . Moreover, the radon concentration of water samples during the treatment were evaluated for each stage in order to identify if there was any impact of coal ashes on the treated water. Radon activity of treated water remains in the standards with a average value of 196 ± 13 (Bq/m 3 ) less far than the permissible limit (11100 Bq/m 3 ). The obtained results indicate that the radiological characteristics of the treated water was not influenced by radiological characteristics of coal ashes. It be concluded that coal ashes from TAQA Morocco are a safe materials and did not present a significant radiological risk which make them a suitable material for wastewater treatment.

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“…The monitoring of 222 Rn in the groundwater of the Northeastern Gran Canaria aquifer was conducted [7]. 222 Rn was detected in 28 samples by using a closed loop system, which consists of a monitor AlphaGUARD which measures the concentration of 222 Rn in the air through ionization chambers and a set AquaKIT which transfers the dissolved 222 Rn in the water sample in contact with the inside air.…”

Section: Introductionmentioning

confidence: 99%

Natural Radioactivity in Drinking Water Sources of the Republic of Moldova

Corețchi¹,

Plăvan²,

Virlan³

et al. 2017

RAD Conference Proceedings

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Pollution and contamination of drinking water potentially cause severe problems to health so the water quality management addresses both national and international action to assess and prevent associated hazards. A survey to study natural radioactivity in drinking water was carried out in the Republic of Moldova. Approximately 3111 samples of drinking water were analyzed between 1985-1999 and 2011-2015. The samples were categorized according to their origin: bottled or public supply. The samples were analyzed for gross beta, 220 Rn, 222 Rn, 137 Cs and 90 Sr activity. The activity concentration for gross beta was found to range from 0.41 to 1.53 Bq/L. The gross beta activity content in the majority of the samples is due to 40 K. Average concentrations of 137 Cs and 90 Sr activity in the studied waters ranged respectively from 0.02 to 3.2 Bq/L and 0.012 to 2.2 Bq/L. Regarding radon detection, the results showed that the average concentration of radon in artesian wells was 1.93 Bq/m 3 ; in the aqueduct water -3.12 Bq/m 3 ; in the spring waters -6.17 Bq/m 3 ; in wells -3.87 Bq/m 3 , in bottled water -0.1 Bq/l, in mine water -0.93 Bq/l and in the surface water ─ about 1 Bq/m 3 . It was stated that 222 Rn concentrations in the surveyed waters did not exceed the permissible values according to national rules and Directive 2013/59/EURATOM.

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Radon in Groundwater of the Northeastern Gran Canaria Aquifer

Cited by 34 publications

References 29 publications

Anomalous concentrations of arsenic, fluoride and radon in volcanic-sedimentary aquifers from central Italy: Quality indexes for management of the water resource

Anomalous concentrations of arsenic, fluoride and radon in volcanic-sedimentary aquifers from central Italy: Quality indexes for management of the water resource

Radiological assessment of wastewater treatment processes based on the use of coal ashes as a filters

Natural Radioactivity in Drinking Water Sources of the Republic of Moldova

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