Correlations of natural radionuclides in sediment from Danube

Krmar, M.; Slivka, J.; Varga, E.; Bikit, I.; Vesković, M.

doi:10.1016/j.gexplo.2008.03.002

Cited by 45 publications

(23 citation statements)

References 16 publications

(16 reference statements)

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“…The presence and ratio of certain chemical elements, their markers  natural and man-made radionuclides, could be an important source of information about specifi c geochemical areas of the Carpathians and their dependence on the technogenic activity in the region [9,10]. As mentioned above, the results of such studies are also important for developing the methods and for estimations the radon content of the base of mapping the radiation distribution in the Carpathian area.…”

Section: The Sampling and Measuring Proceduresmentioning

confidence: 99%

The natural radioactivity of the Carpathian national parks and radon evaluation

et al. 2016

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Abstract. The results of the low-background gamma spectrometric measurements of protected mountain areas (Zacharovanyy Kray, Chorne Bahno, Ihthyological Preserve Rika and Uzhanskij National Natural Park) in the region of Primeval Beech Forests of the Transcarpathia, Ukraine, are presented. The distances between sampling points in a single protected area were in the range of 200-400 m in elevation of 300 m; probes were taken from the surface, from depth 20 cm and more than 50 cm. The proposed sampling scheme allows one to investigate the radionuclide concentration in protected area's soils, their distribution on/near the mountain ridges and migration in depth (0-50 cm). We also investigate the infl uence the soils' pH on the contents and the migration of nuclides. The obtained data allow us to study the statistical regularities between the sampling points along and down mountain ridges on the base of their radionuclide content. These results are important for evaluating the radon content/distribution and developing standards in the radionuclide content of the soil Carpathian region.

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Section: The Sampling and Measuring Proceduresmentioning

confidence: 99%

The natural radioactivity of the Carpathian national parks and radon evaluation

et al. 2016

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“…The activity concentrations of the radionuclides 238 U, 232 Th and 40 K in the Ponnaiyar river sediment samples (Table I) [8,23].…”

Section: Radioactivity Nature Of the Sedimentmentioning

confidence: 99%

“…In addition to the natural sources, soil radioactivity is also affected by man-made activities. Naturally occurring radionuclides of terrestrial origin are present in river sediments as well [8]. The environmental uranium and partial thorium concentrations are increased due to the fertilizers.…”

Section: Introductionmentioning

confidence: 99%

“…Usually fertilizers are considered as technologically enhanced natural radiation [9]. Considerable amounts of natural radio nuclides are found in river sediments as the end result of fertilizer washing and industrial activities [8].…”

Section: Introductionmentioning

confidence: 99%

“…Especially, Chaparro et al, [12,13] proved that magnetic susceptibility is able to reflect anthropogenic input into river sediments. Radioactivity of river sediments was measured by many authors [8,9,[16][17][18]. The infrared spectra of river sediments from Cauvery and Vellar have been characterized by Ramasamy et al, [19,20].…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Susceptibility and Radiological Hazardous Nature of the River Sediments - Spectroscopical Approach

et al. 2010

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Magnetic susceptibility, radioactivity and mineralogical characterization are performed on 40 sediment samples collected from the Ponnaiyar river, Tamilnadu, to establish a possible link between the enhanced concentration of anthropogenic magnetic particles, radionuclides and minerals. Higher magnetic susceptibility values (> 150 × 10 −8 m 3 /kg) are observed in last 100 km of the river. However, some elevated values are also observed in first 100 km. Frequency dependence of magnetic susceptibility is calculated to understand the magnetic grain variations which are presented and discussed. The average activity concentration of radionuclides ( 238 U, 232 Th and 40 K) falls within the typical world and Indian average values although some extreme values are determined. To assess the radiological hazard of river sediments, radiological hazard indices such as absorbed dose rate, annual effective dose equivalent, radium equivalent, hazard indices (Hex, Hin, Iγ, I and excess lifetime cancer risk) are calculated which shows below the internationally recommended values. The relative distribution of major minerals is determined by calculating extinction coefficient. Correlation analysis is carried out between the parameters obtained from radioactivity analysis and other analyses to know the existing relations. Obtained correlations are discussed and suggest that the natural radioactivity level and magnetic susceptibility of the present sediments is mainly controlled by clay content.

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Heavy Metals in Sediment from Bei Shan River: Distribution, Relationship with Soil Characteristics and Multivariate Assessment of Contamination Sources

Yan

Luo

2015

Bull Environ Contam Toxicol

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The concentrations and correlation between some heavy metals (Mn, Cd, Cr, Cu, Ni, Zn and Pb) measured in sediments in part of Bei shan River near uranium mill tailings were studied. The mean concentration of Cr (57.7 mg/g) was more than the mean values established for uncultivated areas worldwide (46.3 mg/g). Negative correlations with pH and positive correlations with organic matter have been observed for most of elements analyzed in this study. Correlation analysis showed that all metals except Cr are highly correlated (p ≤ 0.01, p ≤ 0.05). This may indicate the different origin or controlling factors of Cr in analyzed sediments. Cluster analysis highlighted the lithogenic origin of heavy metals (Mn, Cd, Cu, Ni, Zn and Pb) and pointed out the primary input of Cr from anthropogenic sources.

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Correlations of natural radionuclides in sediment from Danube

Cited by 45 publications

References 16 publications

The natural radioactivity of the Carpathian national parks and radon evaluation

The natural radioactivity of the Carpathian national parks and radon evaluation

Magnetic Susceptibility and Radiological Hazardous Nature of the River Sediments - Spectroscopical Approach

Heavy Metals in Sediment from Bei Shan River: Distribution, Relationship with Soil Characteristics and Multivariate Assessment of Contamination Sources

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