Radioactivity measurements in the environment of Chamaraja Nagar area, India

Nagaraju, K. M.; Chandrashekara,; Rani, KS Pruthvi; Rajesh, B.; Paramesh, L.

doi:10.4103/0972-0464.121812

Cited by 13 publications

(3 citation statements)

References 16 publications

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“…Radon exhalation rates are expected to depend on the concentrations of uranium and radium in the studied samples and also depend on many other factors, such as permeability, porosity, density, texture and grain size (Nagaraju et al, 2013;Saad et al, 2013). The study of the exhalation rate of radon was significant for understanding the comparative distribution of the material to the total radon concentration determined in the sediment samples and useful to investigate the radon health hazard (Abd-Elzaher, 2012; Yousef et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Radioactivity assessment in Euphrates river sediment samples

Al-Ani¹,

Mohammed²,

Amin³

et al. 2023

GSC Adv. Res. Rev.

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This study was carried out to investigate builds up a rule map on various radiological factors in and around the Euphrates River in Iraq. Radon levels, radium content and surface and mass radon exhalation rates for 20 sediment tests gathered from different districts along the Euphrates River, Iraq, (about 500km long) using the can technique, with the CR-39 plastic detector. Radon fixation esteems were viewed as going from 835.0 to 2797.7 Bq.m-3 with a normal worth of 1703.5 Bq.m-3. The normal worth of radium content was viewed as 12.5 Bg.kg-1 while the most minimal and most elevated determined upsides of radium content (CRa) were 6.1 and 20.5 Bq.kg-1, respectively. The radon exhalation rates (surface ES and mass Em) for the study sediment samples were found to vary from (0.41 to 1.37) Bq.m-2.h-1 and from (0.09 to 0.31) Bq.kg-1.h-1with average values of 0.83 Bq.m-2.h-1 and 0.19 Bq.kg-1.h-1, respectively. The values of CRa for all sediment samples were lower than the recommended value of 30 Bq.kg-1 given by UNSCEAR. Hence, the results show that the study area is safe as far as the health hazard effects are concerned, and the values of radium content in all surveyed sites are lower than the allowable limit.

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Section: Resultsmentioning

confidence: 99%

Radioactivity assessment in Euphrates river sediment samples

Al-Ani¹,

Mohammed²,

Amin³

et al. 2023

GSC Adv. Res. Rev.

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“…In the underground of the Tilis , ca locality, Dordea [60] mentioned the presence of gneiss rocks, exploited as a valuable resource for the construction industry [61]. Otoo et al [46] observed that due to its properties (density, durability, and water absorption capacity), this rock stores many natural radionuclides, including 226 Ra [61,62], which contributes significantly to the gross alpha activity [63], and 40 K [61], which plays an important role in the gross beta activity [63], also showing a significant positive correlation with 222 Rn abundance [61]. Other rocks described as being associated with high radon levels, especially in groundwater, are granite [62,64,65], shale, and phyllite [64].…”

Section: Radioactivity Parameters Of Drinking Water In the Studied Areamentioning

confidence: 99%

“…Otoo et al [46] observed that due to its properties (density, durability, and water absorption capacity), this rock stores many natural radionuclides, including 226 Ra [61,62], which contributes significantly to the gross alpha activity [63], and 40 K [61], which plays an important role in the gross beta activity [63], also showing a significant positive correlation with 222 Rn abundance [61]. Other rocks described as being associated with high radon levels, especially in groundwater, are granite [62,64,65], shale, and phyllite [64]. Thus, the presence of such rock types could contribute to the unexpected high levels of water gross alpha and beta activities from the three localities.…”

Section: Radioactivity Parameters Of Drinking Water In the Studied Areamentioning

confidence: 99%

A Multivariate Model of Drinking Water Quality Based on Regular Monitoring of Radioactivity and Chemical Composition

Tăban,

Benedek,

Stoia

et al. 2023

Applied Sciences

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From a public health perspective, the monitoring of water quality intended for human consumption belongs to the operational and audit management of the supply zones. Our study explores the spatial and temporal patterns of the parameters of drinking water in Sibiu County, Romania. We related the relevant physical-chemical parameters (ammonia, chlorine, nitrates, Al, Fe, Pb, Cd, Mn, pH, conductivity, turbidity, and oxidizability) and radioactivity (gross alpha activity, gross beta activity, and radon-222 content) from a 5-year survey to the water source (surface water and groundwater, which may be of subsurface or deep origin), space (sampling locality) and time (sampling month and year). We conducted a combined evaluation using the generalized linear mixed models (GLMMs), Pearson correlation analysis of the physical-chemical parameter, multivariate linear redundancy analysis (RDA), t-value biplots construction, and co-inertia analysis. The obtained regional model shows that the source, locality, and month of sampling are significant factors in physical-chemical parameters’ variation. Fe and turbidity have significantly higher values in surface water, and nitrates and conductivity in groundwater. The highest values are recorded in January (nitrates), March (Cl, ammonia, pH) and August (Fe, turbidity). The RDA ordination diagram illustrates the localities with particular or similar characteristics of drinking water, two of which (rural sources) being of concern. The water source is the best predictor for radioactivity, which increases from surface to ground. The gross alpha and beta activities are significantly and positively correlated, and are both correlated with conductivity. In addition, the gross alpha activity is positively correlated with nitrates and negatively with pH, while the gross beta activity is positively correlated with Mn and negatively with Fe; these relationships are also revealed by the co-inertia analysis. In conclusion, our model using multilevel statistical techniques illustrates a potential approach to short-term dynamics of water quality which will be useful to local authorities.

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