Radioactivity of Soil, Rock and Water in a Shale Gas Exploitation Area, SW China

This study deals with radioactivity and heavy metal distribution and statistical analyses in the Bendimahi River Basin, which is within the Lake Van Closed Basin, Turkey. In order to identify the relationships between measured variables and to categorize soils and sediments collected at 15 sites on Bendimahi River, factor and cluster analysis have been applied. The data set is constituted of 9 radiological and physico-chemical variables, including gross alpha and gross beta activities and Pb, Zn, Cu, Cr, Cd, Co and Mn concentrations. Factor and cluster analysis were used to describe the relationship and similarity among data sets (variables) for the Bendimahi River. The convergence diagnostics such as trace plot and kernel density were applied to determine the convergence criteria to the data sets.

Section: Chemical and Radiological Resultscontrasting

confidence: 60%

Chemometric data analysis of gross radioactivity and heavy metal concentrations in soil and sediments of Bendimahi River, Turkey

Şehrïbanoğlu

Zorer

2020

“…As mentioned in introduction, the underlying geological formation is one of the important factors that affect the radionuclide level in thermal water sources. In the current case, the geological characteristic at the thermal water sources are similar, and the underlying limestone aquifer has relatively low activity concentrations [10,20,21].…”

Section: Resultsmentioning

confidence: 92%

Gross alpha/beta activity concentrations in spa and mineral waters in North Vietnam

Duong

Nguyen

et al. 2020

There is little available information on the radioactivity concentrations in the thermal and drinking water sources in North Vietnam. In the current study, the gross alpha and gross beta activity concentrations were determined in 8 water sources in the area. The average activities of gross alpha and beta in the 8 sources are 38.7 mBq L− 1 and 88.0 mBq L− 1. These activity concentrations are lower than WHO recommendations for drinking water. In this study, the gross alpha and gross beta show a weak correlation.

“…Areas with high background radiation concentrations such as granite, phosphate, shale formations can have elevated levels of radioactivity in ground or thermal waters [47][48][49][50]. On the other hand, areas with low natural radioactivity are often found in carbonate or limestone formations, which often correspond to lower levels of natural radioactivity in the water resources in those areas [44,[51][52][53][54][55][56]. In this study, the 210 Po characteristics in the thermal water at these eight sites is a case study for an area believed to have a low radioactive background with a carbonate host formation.…”

Section: Resultsmentioning

confidence: 99%

210Po characteristic in selected thermal water sources in Northern Vietnam

Duong

Phan

Nguyen

et al. 2022

There are eight famous thermal water sources, with medium temperature, neutral pH, high ranges of TDS values located in different carbonate formations in Northern Vietnam. The chemical composition results showed the major elements present were Na, K, Mg, Ca, Sr, while trace amounts of rare earth elements (REE), Ag, As, Pb, Th, U were observed. The 210Po activity concentration and the annual committed effective doses for adults, children, and infants in all study areas were far less than 100 mBq L−1 and 0.1 mSv y−1, respectively. Some significant correlations between 210Po and other chemical components have been observed.