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In recent years on the indoor radon measurement very seriously, radon many methods, including activated charcoal method and passive sampling measurements, activated charcoal exposed to the measurement environment cumulative collection of radon absorbed into the carbon particles in the radon decay into daughter deposition of these, with HPGeγspectrometer measurement of radon daughters 214Pb (295kev and 352kev), 214Bi (609kev) characteristicγ-ray peaks, we can calculate the radon exposure of the amount of activated carbon adsorption period, then calculate the average radon concentration, the operation more simple and low cost.Activated charcoal scale factor depends on the duration of exposure to carbon box absorbs moisture and exposure, and thus the scale required in different conditions of humidity and temperature, a large number of measurements and calculations, the United States EERF provides the necessary scale activated charcoal three humidity Range (20%, 50%, 80%) and 1-6 days of exposure to the experimental data, the experimental conditions of the project is insufficient experimental data using EERF easy way to scale, using data design data fitting way to radon Data processing to meet the needs of activated charcoal radon law.The radon data processing to Windows as a platform, object-oriented programming language Visual Basic6.0 programming, the calculation of the radon data and management, user-friendly, user operation, use, greatly improving efficiency. Large area of activated carbon for radon measurements and data processing plays a role, which activated the practical application of radon method has a certain significance.
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