A review of radon measurement studies in Pakistan.

Radon is being extensively measured all over the world due to its hazardous health effects as well as for different geological applications. In this regard, considerable studies have been conducted by different research groups in Pakistan. However, these studies are scattered and need to be combined/listed somewhere for future studies of radon in Pakistan. In this article, all the studies concerning radon measurements have been reviewed. The main emphasis is on different methods used in the measurement of radon. A minimum value of 5 Bq m(-3) has been reported for a centrally air conditioned room and a maximum value of 782 +/- 125 Bq m(-3) has been observed in coal mines of Khushab, Punjab.