Cesium-137 spatial activity in surface soils near and surrounding the Gurí Reservoir (Venezuela)

LaBrecque, J. J.; Cordoves, P. R.

doi:10.1007/s10967-005-0792-8

Cited by 7 publications

(3 citation statements)

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“…On the basis of the data from the literature, one can perceive that the mean values of the specific activities of 137 Cs are significantly higher in the areas which have been exposed to the radioactive cloud from Chernobyl (Bulgaria, Macedonia, Turkey, Republika Srpska and Serbia), (Karahan and Bayulken, 2000;Jankovic, 2001a;Janković, 2008b;Djingova and Kuleff, 2002), while they are significantly lower in Pakistan, Venezuela, China and these values are certainly a consequence of nuclear explosions and trials. Also one can perceive that the specific activities of 137 Cs are lower in sandy terrains (the Croatian islands and Saudi Arabia) (Kulic, 2008;Lu et al 2006;La Brecque, 2005). Figure 2.…”

Section: Resultsmentioning

confidence: 99%

137Cs ANALYSIS IN CULTIVATED SOIL AND UNCULTIVATED SOIL SAMPLES FROM CITIES SKOPJE- MACEDONIA, USING GAMMA RAY SPECTROMETRY

Todorovik¹,

Stojkovik²,

Uzunov³

et al. 2015

AgricultForest

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The goal of this study was focused on determination of the specific activity of 137 Cs in the samples of cultivated and uncultivated soil, as well as comparison with specific countries. The samples were taken from 14 locations in the surrounding of the city of Skopje. The spectral analysis of the radionuclides of these samples was conducted by applying a γ-ray spectrometer with high purity germanium (HPGe) detector with 30% relative efficiency. The data show that the specific activities of this radionuclide vary within a range of 6,04 Bq/kg (measured in Dracevo at a depth of 15 cm) to a maximal value of 21,87 Bq/kg (measured in Radisani at a depth of 5 cm) for cultivated land. The specific activities of this radionuclide vary within a range of 5,01 Bq/kg (measured in Radisani at a depth of 10-15 cm) to a maximal value of 19,05 Bq/kg (measured in Bardovci at a depth of 0-5 cm) for non-cultivated land. On the basis of the obtained results, an expressed variability is perceived regarding the specific activities of 137 Cs in the examined soil samples according to location and depth. The very research indicates that in both types of soil, the highest level of 137 Cs exists at a depth of 5 cm which is in accordance with the literature data. In the examined locations there is no need of special procedures for soil decontamination, however the familiarization with the methods related to the decrease of the radiological activity can be beneficial considering the fact that the soil is a part of the link soil-food-human.

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Section: Resultsmentioning

confidence: 99%

137Cs ANALYSIS IN CULTIVATED SOIL AND UNCULTIVATED SOIL SAMPLES FROM CITIES SKOPJE- MACEDONIA, USING GAMMA RAY SPECTROMETRY

Todorovik¹,

Stojkovik²,

Uzunov³

et al. 2015

AgricultForest

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“…No dependence between concentration values and geographic location was found, but of the average annual rainfall. Labrecque et al [19] found concentrations of 137 Cs in Venezuelan soils varying between 16.3 and 30.8 Bq.kg -1 , which are considered anomalous (high) for the region that is located near the equator. These high concentration values were attributed to the high annual rainfall and to the organic soils of the area.…”

Section: Introductionmentioning

confidence: 99%

Concentration of fallout Cesium-137 in soils of the Rio de Janeiro State, Brazil

Ribeiro¹,

Lauria²,

Silva³

et al. 2016

Braz. J. Rad. Sci.

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The distribution of fallout 137 Cs in soil samples of the Rio de Janeiro State was investigated. Two-hundred sixty-two samples of soil were analyzed for 137 Cs by gamma spectrometry. A reference data set was built containing thirty-six detected values (14%) and two hundred twenty-six (86%) multiple detection limits of non-detected observations. Distribution pattern of the radionuclide, as well their controlling factors were evaluated based on statistical methods for censored data set (with non-detected observations). The mean of concentration values of thirty-six detected observations was 1.25 Bq.kg-1 , while for the censored data sets the mean value was 0.51 Bq.kg-1. The references values for the Rio de Janeiro State were estimated as 1.44 Bq.kg-1 (75 th) and 1.78 Bq.kg-1 (90 th) (considering the year of 2015). 137 Cs concentrations tend to be higher in soils with high levels of organic matter and clay and locations with high levels of these parameters would provide higher Cs fixation. No influence of the rainfall index and soil pH on the Cs content in soil was observed. The data and information gathered in this study provide valuable information for decision making purposes in case of soil contamination.

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“…Meteorological conditions affect the deposition of 137 Cs that is released from nuclear accidents. Several studies have been conducted from around the world on the fallout and distribution of 137 Cs in soil and air samples (Petropoulos et al 1996;Biegalski et al 2001;LaBrecque and Cordoves 2005;Roussel-Debel et al 2007;Ylipieti et al 2008;Ritchie et al 2009;Khoshbinfar and Vahabi Moghaddam 2012).…”

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confidence: 99%

Monitoring of 137Cs Fallout in Syrian Environment

Alhajji

Al-Masri

Al-Hamwi

et al. 2014

Bull Environ Contam Toxicol

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This paper presents measurements of cesium 137 ((137)Cs) in the Syrian environment during the period between 2006 and 2010. More than 1,000 samples of soil, water, plants and aquatic life were collected from different locations. The measurements were realized using gamma spectroscopy, and the results showed that radioactivity concentrations were low overall. Concentrations ranged from below detection limits to several tens Bq kg(-1) (dry matter) or 9.8 mBq L(-1) (water), which were well below maximum allowable levels in food or drinking water as established according to Syrian national standards or the WHO/FAO Codex guidelines. However, high (137)Cs activity levels were observed in soil samples collected at a high elevation (Kadmous highs), where a mean concentration of 1,900 Bq kg(-1) was obtained.

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Cesium-137 spatial activity in surface soils near and surrounding the Gurí Reservoir (Venezuela)

Cited by 7 publications

References 0 publications

137Cs ANALYSIS IN CULTIVATED SOIL AND UNCULTIVATED SOIL SAMPLES FROM CITIES SKOPJE- MACEDONIA, USING GAMMA RAY SPECTROMETRY

137Cs ANALYSIS IN CULTIVATED SOIL AND UNCULTIVATED SOIL SAMPLES FROM CITIES SKOPJE- MACEDONIA, USING GAMMA RAY SPECTROMETRY

Concentration of fallout Cesium-137 in soils of the Rio de Janeiro State, Brazil

Monitoring of 137Cs Fallout in Syrian Environment

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