Radon is a naturally occurring noble gas. It can easily diffuse into the environment. It is found in waters which are in contact with rocks having high uranium concentration (Desideri et al., 2005). Radon gas is considered to be one of the natural radioactive elements with greatest mobility in the terrestrial crust. Conventional chemical analysis of water does not place emphasis on the study of...

The indoor 222Rn radionuclide was directly absorbed in typical 20 ml glass scintillation vials by passing -3 dm3 of ambient air through 16 ml of water-immiscible non-volataile scintillation cocktail Ultima-Gold F for 10 min. The activity of radon and its two α-emitting daughters: 218Po and 214Po, was determined with the BetaScout low-background liquid scintillation counter. The limit of 222Rn d...

background: radon (222rn) measurement in the residential environments is very important because of its effecting on human health and causing cancer in the respiratory system. 222rn is individually responsible for half of the natural radiation received in humans and influences on human by breathing. hence, this study was undertaken to access the 222rn level in the dormitories of kerman universit...

We report a simple new technique for measuring low-level radium isotopes (224Ra and 226Ra) in natural waters. The radium present in natural waters is first preconcentrated onto MnO2-coated acrylic fiber (Mn fiber) in a column mode. The radon produced from the adsorbed radium is then circulated through a closed air-loop connected to a commercial radon-in-air monitor. The monitor counts alpha dec...

We conducted a lung cancer risk assessment for internal exposure to naturally occurring 222Rn gas both indoor and outdoor. A series of equations were used to estimate Rn concentrations indoor and outdoor and the associated lung cancer risk in some coastal regions in Egypt. The mean 222Rn concentrations were 42.98 (SD 33.12) Bq/m3 and 8.63 (SD 6.16) Bq/m3 indoor and outdoor respectively. The mea...

Radon-222 is a good natural tracer of groundwater flow into the coastal ocean. Unfortunately, its usefulness is limited by the time consuming nature of collecting individual samples and traditional analysis schemes. We demonstrate here an automated system which can determine, on a “continuous” basis, the radon activity in coastal ocean waters. The system analyses 222Rn from a constant stream of...

Background: Radon (222Rn) Measurement in the residential environments is very important because of its effecting on human health and causing cancer in the respiratory system. 222Rn is individually responsible for half of the natural radiation received in humans and influences on human by breathing. Hence, this study was undertaken to access the 222Rn level in the dormitories of Kerman ...

*Corresponding author: Dr. T.V. Ramachandran, 19-A/201, Verain Regency Estate, Kalyan _ Shill Road, Dombivli (E) 421 202, Maharashtra, India E-mail: [email protected] Ever since studies on uranium miners established the presence of a positive risk coefficient for the occurrence of lung cancer in miners exposed to elevated levels of 222Rn and its progeny, there was a great upsurge of interest i...

Ever since studies on uranium miners established the presence of a positive risk coefficient for the occurrence of lung cancer in miners exposed to elevated levels of 222Rn and its progeny, there was a great upsurge of interest in the measurement of 222Rn in the environment and considerable data is generated on the levels of 222Rn in the environment across the worlds and is periodically ...

An aerodynamic calibration device called ICARE is briefly described. ICARE is currently being used at the Nuclear Research Center of Saclay in France for the certification of instruments employed in measurement of artificial radioactive particulate airborne contamination. ICARE is essentially a blower. Aerosols calibrated in size and labelled with 137Cs or 239Pu are injected in the mainstream o...