Abstract Purpose Among the several methods to measure 222 Rn in water, liquid scintillation counting (LSC) technique is one of most sensitive and widely used when analysing non-saline waters by extraction, providing excellent accuracy, precision low-level detection limits. When using counter Tri-Carb 3170 TR/SL (Perkin-Elmer) it not possible make an automatic determination alpha/beta discrimina...

background: high level radiation areas have been recognized on various parts of the earth. mahallat hot spring region is one of these areas. study of exposure in these areas can be helpful in investigating the effects of ionizing radiation. internal and external exposure to the staff was studied. materials and methods: used materials and instruments include: rss-112 ionizing chamber for environ...

Assessing water travel times in hyporheic and adjacent alluvial sediments is important to quantify exchange rates, biogeochemical turnover, pollution dynamics across groundwater-surface interfaces floodplain aquifers. Heat 222Rn are useful natural tracers for this purpose. While heat transport commonly simulated via the convection-conduction equation, of often assuming purely advective a homoge...

A survey of inhabitant exposures arising from the inhalation of 222Rn and 220Rn progeny, and lung cancer mortality has been carried out in two adjacent areas in Guangdong Province, People’s Republic of China, designated as the “high background” and the “control” area. Annual exposure rates are 0.38 working level months (WLM) per year in the high background, and 0.16 WLM/yr in the control area. ...