Introduction Foodstuffs are known to contain natural and artificial radionuclides. Determination of radionuclide concentration is of great significance for the protection of human health. The main objective of the present study was the quantification of radionuclides in tea samples, cultivated in Guilan Province in North of Iran. Materials and Methods The activity concentrations of 226Ra, 232Th...

Radionuclides and heavy metals/metalloids content in soils shore sediments of Al-Negila area (Matrouh, Egypt) were determined to assess the associated environmental risks. A total 46 soil sediment samples collected analysed for natural man-made radionuclides (238U series, 232Th 40K 137Cs) (Al, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, Mn, Ni, Si, Sr, Zn, Hg). Within study area, are mainly calcareous with ...

Relative absorbed dose energy response correction, R, for various radiochromic films in water phantom is calculated by the use of the Monte Carlo-based EGSnrc code system for high energy brachytherapy sources 60Co, 137Cs, 192Ir and 169Yb. The corrections are calculated along the transverse axis of the sources (1-15 cm). The radiochromic films investigated are EBT, EBT2 (lot 020609 and lot 03110...

A large-scale heavy rainfall disaster occurred in Joso City, Japan, in September 2015, and one third of the city area (40 km2) was flooded by the Kinu River. Artificial radionuclides such as 134Cs and 137Cs were known to have accumulated in the river bottom sediment after their release in the 2011 Fukushima Dai-ichi Nuclear Power Plant accident. It was thought that these radionuclides might hav...

Quantifying the amount of cesium incorporated into marine sediments as a result of the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident has proven challenging due to the limited multi-core sampling from within the 30 km zone around the facility; the inherent spatial heterogeneities in ocean sediments; and the potential for inventory fluctuations due to physical, biological, and chemical ...

Introduction We would like to present the use of another natural radionuclide chain, that of 232Th. It is suggested to be used as a relative energy calibrator, while absolute calibration will be done by a standard source of 137Cs which, due to its long half-life, requires a change of the calibrated standard only in about 30 to 50 years. Most Ge detector/MCA set-ups are calibrated for energy and...