Many food products are recommended to give health benefits. Thus algae superfoods consumption is growing worldwide, although quite a few studies have examined the quantities of radionuclides they contain and their potential effects on human health. The study presents radioactive 40K, 137Cs, 226Ra, 228Ra, 234Th in supplements available worldwide for consumption. Samples been quantified by gamma-...

Radioactive disequilibrium of 23Su nuclides is commonly observed in young lavas and has often been used to infer the rates of melting and melt migration. However, previous calculations do not actually include melt transport. Here we explore the behaviour of short-lived radionuclides in a new calculation that includes the fluid dynamics of melt segregation. We emphasize that series disequilibriu...

The activity concentrations of naturally occurring radionuclides in vegetables and peat soil were investigated to determine the transfer factors from obtained farms Klang Selangor. results showed that concentration ranges for 226Ra, 232Th, 40K vegetable 2.72-46.54 Bqkg-1, 9.01-54.84 19.22-477.76 respectively. various samples 0.41-3.41 0.02-3.56 16.22-317.49 soil-to-plant 0.01-0.67, 0.00-0.17, 0...

introduction natural and man made radioactive sources exist in our environment they can enter into our food chains. one of these is the soil-mushroom-human chain. high level doses of natural radiation can cause hazards to humans. materials and methods samples of agaricus bisporus cultivated edible mushroom in tehran province- iran were collected from 7 farms. specific activity of 226ra, 228ra, ...

Uncontrolled disposal of oilfield produced water in the surrounding environment could lead to soil contamination by naturally occurring radioactive materials (NORM). Large volumes become highly contaminated with radium isotopes (226Ra and 228Ra). The concentration radionuclides 226Ra, 232Th 40K were determined using gamma ray spectrometry order assess radiological health hazards excess lifetime...

Background: Knowledge of radioactivity levels in human diet is of particular concern for the estimation of possible radiological hazards to human health. However, very few surveys of radioactivity in food have been conducted in Iran therefore the baseline values of the natural radionuclides concentration (40K, 226Ra and 232Th), and man made radionuclide, 137Cs, were determined in twenty six...

The aim of this study is to analyse the role natural radionuclides 226Ra, 228Ra, 40K and unsupported 210Pb (210Pbex), as erosion accumulation process tracers. For purpose, a complex system, including both characteristic dynamics closed beach those associated with open wave action, was studied. A 3-year monthly variation 210Pbex carried out at Las Canteras beach, on Island Gran Canaria (Spain), ...

U-series isotope behaviour in subsurface sediment of the Arctic Ocean is investigated based on high resolution measurements of natural radionuclides (210Pb, 226Ra, 230Th) and a few analyses of anthropogenic 137Cs in cores collected during the 2005 Healy-Oden Trans-Arctic Expedition (HOTRAX). Cores from the Mendeleev Ridge, representing distinct bathymetric settings, are analyzed in more detail ...

Radioactive materials which occur naturally and expose people to radiation widely, are known by the acronym 'NORM'. Exposure NORM is often increased human activities, eg burning coal, making using fertilisers, oil gas production.
 Many natural contain radioactive elements (radionuclides). The earth's crust constantly leaks radon into our atmosphere. However, while level of individual expos...

Introduction: The present study was conducted to measure the specific activities of 226Ra,232Th and 40K, in some samples of nuts collected from the local markets in Iraq. In addition, this study sought to calculate the annual effective dose of gamma ray to children and adults. Material and Methods: The quantification of radionuclides was accomplished by gamma spectrometry NaI (Tl) detector. Res...