Environmental Estimation of Radiation Equivalent Dose Rates in Soils and Waters of Northern Calabria (Italy)

Guagliardi, Ilaria; Caloiero, Tommaso; Infusino, Ernesto; Callegari, Giovanni; Ricca, Nicola

doi:10.1155/2021/6617283

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…The alignment of the sample points into the different sectors allows the identification of possible phenomena such as mixing or evolutionary processes of water [ 25 ].…”

Section: Methodsmentioning

confidence: 99%

“…The study area is characterized by many spring waters, and its groundwater is largely used for drinking purposes, thus representing a natural and socioeconomically important resource. However, few analyses on few samples have been carried out in the past years to assess the quality and the degradation processes affecting the aquifers of the Calabria region [ 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

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Vulnerability to Nitrate Occurrence in the Spring Waters of the Sila Massif (Calabria, Southern Italy)

Infusino

Guagliardi

Gaglioti

et al. 2022

Toxics

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Knowledge of spring waters’ chemical composition is paramount for both their use and their conservation. Vast surveys at the basin scale are required to define the nature and the location of the springs and to identify the hydrochemical facies of their aquifers. The present study aims to evaluate the hydrochemical facies and the vulnerability to nitrates of 59 springs falling in the Sila Massif in Calabria (southern Italy) and to identify their vulnerability through the analysis of physicochemical parameters and the use of the Langelier–Ludwig diagram. A spatial analysis was performed by the spline method. The results identified a mean value of 4.39 mg NO3−/L and a maximum value of 24 mg NO3−/L for nitrate pollution in the study area. Statistical analysis results showed that the increase in electrical conductivity follows the increase in alkalinity values, a correlation especially evident in the bicarbonate Ca-Mg waters and linked to the possibility of higher nitrate concentrations in springs. These analyses also showed that nitrate vulnerability is dependent on the geological setting of springs. Indeed, the Sila igneous–metamorphic batholith, often strongly affected by weathering processes, contributes to not buffering the nitrate impacts on aquifers. Conversely, anthropogenic activities, particularly fertilization practices, are key factors in groundwater vulnerability.

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“…The alignment of the sample points into the different sectors allows the identification of possible phenomena such as mixing or evolutionary processes of water [ 25 ].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vulnerability to Nitrate Occurrence in the Spring Waters of the Sila Massif (Calabria, Southern Italy)

Infusino

Guagliardi

Gaglioti

et al. 2022

Toxics

Self Cite

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“…Radionuclides are responsible for around 86 % of the effective human dosage [3,4]. These radionuclides consist predominately of the 238 U series, the 232 Th series, and the 40 K series, together with their decay products [5,6]. Radiations emitted by radioactive materials and associated progenies are one of the most significant external sources of radiation exposure for human beings [7,8].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Radiation Levels and Potential Radiological Hazards in the Soils of Riruwai Mining Area, North-Western Nigeria

Badamasi,

Umar Faruk Hassan,

Harami Malgwi Adamu

et al. 2022

JOPAS

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This research aimed to assess the levels of natural radionuclides in the soil of the Riruwai mining area and to evaluate the radiological hazards associated with them. A total of sixty soil samples were collected from four sampling sites during the dry and wet seasons. The concentrations of uranium-238 (238U), thorium-232 (232Th), and potassium-40 (40K) were measured using an HPGe gamma-ray spectrometer, and the measured concentrations were used to estimate the internal and external hazards and gamma dose rate. The results of the analysis indicated that the concentrations of 238U and 232Th in all sampling sites and seasons were higher than the world average. The radionuclide levels in the soils showed a significant seasonal variation, with higher concentrations obtained during the dry season. The correlation analysis revealed a very strong positive relationship between all the radionuclides, which indicates a common origin (parent material). The gamma dose rate computations revealed that only active and abandoned mining sites have a mean gamma dose rate greater than the tolerable limit of 59.00 nGy/h. The internal and external radiological hazards assessments showed that only the active mining sites had the potential to be hazardous to human health. The researchers, therefore, recommend that comprehensive monitoring of mining operations and public education about the dangers of radiation exposure in the study area be carried out.

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A methodological approach for filling the gap in extreme daily temperature data: an application in the Calabria region (Southern Italy)

Barca,

Guagliardi,

Caloiero

2024

Theor Appl Climatol

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Regional studies are crucial for monitoring and managing the impacts of extreme climatic events. This phenomenon is particularly important in some areas, such as the Mediterranean region, which has been identified as one of the most responsive regions to climate change. In this regard, the analysis of large space-time sets of climatic data can provide potentially valuable information, although the datasets are commonly affected by the issue of missing data. This approach can significantly reduce the reliability of inferences derived from space-time data analysis. Consequently, the selection of an effective missing data recovery method is crucial since a poor dataset reconstruction could lead to misleading the decision makers’ judgments. In the present paper, a methodology that can enhance the confidence of the statistical analysis performed on the reconstructed data is presented. The basic assumption of the proposed methodology is that missing data within certain percentages cannot significantly change the shape or parameters of the complete data distribution. Therefore, by applying several missing data recovery methods whose reconstructed dataset better overlaps the original dataset, larger confidence is needed. After the gap filling procedure, the temporal tendencies of the annual daily minimum temperature (T < 0 °C) were analysed in the Calabria region (southern Italy) by applying a test for trend detection to 8 temperature series over a 30-year period (1990–2019). The results showed that there was a constant reduction in the duration of frosty days, indicating the reliability of the effect of climate change.

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Environmental Estimation of Radiation Equivalent Dose Rates in Soils and Waters of Northern Calabria (Italy)

Abstract: In this study, the equivalent dose rate of natural radionuclides ( H T ) in 99 spring water and surface soil samples was determined using an alpha, beta, and gamma high sensitivity detector up within a Geiger-Muller tube and with a… Show more

Cited by 5 publications

References 27 publications

Vulnerability to Nitrate Occurrence in the Spring Waters of the Sila Massif (Calabria, Southern Italy)

Vulnerability to Nitrate Occurrence in the Spring Waters of the Sila Massif (Calabria, Southern Italy)

Assessment of Radiation Levels and Potential Radiological Hazards in the Soils of Riruwai Mining Area, North-Western Nigeria

A methodological approach for filling the gap in extreme daily temperature data: an application in the Calabria region (Southern Italy)

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