Radon concentrations in Taipei metropolitan railway station

For routine airborne radon monitoring, including use in field conditions, the technique based on electret ion chamber technology seems to be the most suitable choice in many applications. However, this simple and relatively inexpensive method has some specific drawbacks: poorer reproducibility at lower radon concentrations, some uncertainty in the use of manufacturer suggested gamma correction factors, and limited reusability. A modified electret ion chamber method has been proposed, but it is mainly for water borne radon measurement. Therefore, we still applied the simple method recommended by the manufacturer to survey radon concentrations in Taipei Railway Station. (author)