Determination of radionuclide transfer from animal feeds to products and ingestion rates is important in assessing internal radiation risk humans who consume the products. Seventy-nine (79) pasture samples milk were collected cattle farms seven sub-counties. Activity concentrations radionuclides determined using gamma spectroscopy. Transfer ratios calculated. Ingestion cow also determined. Radi...

Background: One of the most significant radionuclides in natural drinking waters is 226Ra and its decay products. It is potential of health problems, including cancer risk. In this study, the effect of 226Ra concentration in 28 drinking water samples collected from the North Guilan province was investigated. Materials and Methods: The activity concentrations of 226Ra were measured by using of r...

The presence of radon in drinking water causes health risks associated with exposure from both inhalation and ingestion. Since the studies show that faults near the water resources have a critical effect on the concentration of radon, Kouhbanan active fault zone, to find water resources  with high radon concentration was chosen for the following investigation. Water samples were taken from all ...

background: the use of chemicals is essential in education resulting in exposure to these pollutant in a variety of chemical and research laboratories. chemical contaminants in chemical laboratories are in different forms and chemical exposure risk assessment is important for choosing appropriate controls in protecting the health of operators, experts and students. for risk assessment in chemic...

the present paper has determined the radioactivity concentrations, which are due to natural occurrence of radionuclides along with heavy metal concentration in water, sediment, and fish from 2 reservoirs in ghana. heavy metal concentrations in all samples were generally within the who safe limits with the average activity concentrations of 238u, 232th, and 40k in water being respectively 0.42±0...

Abstract This study focuses on the evolution of radon concentrations in tap water samples primary schools Najaf city using a RAD-7 detector. Annual effective doses children were calculated. A Geographic Information System technique was used for mapping concentrations, annual dose (AED) ingestion, and inhalation. It found that average value AED due to ingestion 0.236 ± 0.020 μSv/year, while 0.01...

We modeled the risk of gastrointestinal (GI) illness associated with recreational exposures to marine water following storm events in San Diego County, California. We estimated GI illness risks via quantitative microbial risk assessment (QMRA) techniques by consolidating site specific pathogen monitoring data of stormwater, site specific dilution estimates, literature-based water ingestion data...