Measurements of the methane flux and methane concentration profiles in soil air are presented. The flux of methane from the soil is calculated by two methods: a) Direct by placing a static open chamber at the soil surface. b) Indirect, using the (222)Rn concentrations profile and the (222)Rn flux in the soil surface in parallel with the methane concentration ((222)Rn calibrated fluxes). The met...

The standardization of Rn-222 at the Australian Radiation Laboratory involves the calibration of scintillation cells by two methods using standard Ra-226 solutions traceable to the National Institute of Standards and Technology. One of these methods, namely the injection method, involves direct transfer of Rn-222 into a scintillation cell. In the other method, known as the volumetric method, th...

The use of induced time-dependent Radon-222 behavior, to determine source rate magnitudes, ventilation rates (air change rates) and other parameters that affect Rn-222 and progeny levels and exposure to building occupants, is investigated. Under the conditions of purging the subject space and measuring the build-up (seepage) back into the space, theoretical, normalized equations show aunique, o...

Determination of Rn- 222 concentration and annual effective dose inhalation in the vicinity hot springs Kerman province, southeastern Iran

Introduction Conclusions References Tables Figures Back Close Abstract Introduction Conclusions References Tables Figures Back Close Abstract A one-year time series of 222 Rn measured in a rural area in the North of Italy in 1997 is analyzed. The scope of the investigation is to better understand the behavior of this common atmospheric tracer in relation to the meteorological conditions at the ...

Introduction In this study, effective dose equivalent for the public due to internal exposure to 222 radon ( 222 Rn) was evaluated in three regions of Ramsar, a northern coastal city in Iran. Materials and Methods Measurements were carried out using a radon monitoring device. Outdoor and indoor radon concentrations were measured within 24 hours with an integration interval of 3 hours. Regions w...

Main text An international comparison of activity per unit volume 222 Rn (EURAMET project N° 1475, registered in KCDB as supplementary EURAMET.RI(II)-S8.Rn-222) was organised 2019 within the framework European MetroRADON. The LNE-LNHB is pilot comparison. Samples gas provided by were sent to participants and measured using various techniques. reference value power moderated mean (PMM) (Pommé, 2...

Emanation of radon ( 222 Rn) from granite countertops was measured using continuous and integrating radon monitors, and in air collected from encapsulated pieces of the countertops. A majority of the countertops emitted a measurable amount of radon. Although the granites contained the precursors, no thoron ( 220 Rn) emanation was detected. Gamma-ray spectroscopy was used to determine amounts of...