Introduction: The present study investigated the relatively high concentrations of natural radionuclides in raw material that used in ceramic manufacturing, and estimated the occupational exposure due to these activity concentrations. Material and Methods: A high-purity Germanium detector was used to determine naturally occurring radionuclide...

ABSTRACT Background: The radiological impact of the use of phosphate fertilizers in soil is due to the internal irradiation of the lung by the alpha particles, short lived radon-thoron progeny and the external irradiation of the body by gamma rays emitted from radionuclides in situ. This paper describes the results of gamma spectrometric measurements of the concentration ...

The underwater gamma-ray spectrometer KATERINA was calibrated in a special tank and then demonstrated the Southern Caspian Sea to determine radioactivity levels seawater as well sediment. simulated marine efficiency of situ detection system validated analyzing high energetic (1764 keV 214Bi 2614 208Tl) peaks using their known activity concentration determined from low energy emissions. analysis...

background: the patterson-parker table was created in 1934 to determine mg-hr required to deliver the prescribed dose to the treatment area. these tables were created using the dosimetric data for 226ra that was determined in air and were utilized for dose calculations around implants with ra-equivalent radionuclides such as 137cs and 192ir. therefore, the differences of the tissue attenuation ...

Activity concentrations of radionuclides (238U, 226Ra, 232Th, and 40K) in the sediments eight sampling stations heavy metal (Cr, Co, Ni, Cu, Zn, As, Cd, Pb) two long cores from Nansha Sea area were obtained by high-purity germanium spectroscopy inductively coupled plasma atomic emission spectrometry. In a correlation analysis between metals, 232Th was positively correlated with As Pb. 238U demo...

Tobacco samples were collected from different tobacco markets Antalya in Turkey. To calculate natural radionuclides activity concentration, counted for 86400 seconds by using high purity germanium (HPGe) detector. Activity concentrations of 226Ra, 232Th and 40K found higher than minimum detectable (MDA). 137Cs was not detected any sample. concentration range 83±15 Bqkg-1 to 325±45 Bqkg-1, 29±5 ...

We present new 238U-230Th-226Ra-210Pb and supporting data for young lavas from southwest Pacific island arcs, Eyjafjallajökull, Iceland, and Terceira, Azores. The arc lavas have significant 238U and 226Ra excesses, whereas those from the ocean islands have moderate 230Th and 226Ra excesses, reflecting mantle melting in the presence of a water-rich fluid in the former and mantle melting by decom...

This analysis of 238U, 226Ra and 210Pb transfer factors from the soil to leaves different native broadleaf trees at sites previously modified by uranium presence site background radioactivity levels, was conducted using data a few available studies literature. The tree species Quercus ilex, suber, Eucalyptus camaldulensis, pyrenaica, ilex rotundifolia, Populus sp. botryoides Sm. affected Tilia ...

Rice (Oryza sativa) is an important source of human internal exposure to radionuclides and heavy metals because, worldwide, a large fraction the population consume rice as their daily basic diet. In this study, levels correlation natural radioactivity (232Th, 226Ra 40K) (Pb, Ni Cd) in local sold Enugu urban markets, southeastern part Nigeria, were examined. Possible health implications also eva...

Nkamouna-Kongo is a cobalt–nickel deposit located in Lomié, Eastern Cameroon. Mining creates radiation exposure pathways that must be considered risk management scenarios. RESRAD-ONSITE and RESRAD-BIOTA, developed by the US DOE, assess contaminated sites deriving cleanup criteria estimating dose associated with residual radioactive materials using site-specific parameters. This paper evaluated ...