The Correlation Between Indoor Radon Concentration for Different Types of Building and Its Ages

Radon is a naturally occurring gas that originated from the geology material. Most of the building materials like bricks, concrete blocks, aggregates and sand produce radon gas and it will exhale into the residential building. The high contamination of indoor radon gas in the residential building is very harmful to human health. Therefore, this study was conducted to investigate the indoor radon concentration in residential buildings as well as its relationship with building material and age of the building. The Radon Eye detector has been used to measure the indoor radon concentration. Based on the finding results, the indoor radon concentration of concrete type residence, 283 Bq/m(3) is higher than the wooden type of residence 14.13 Bq/m(3). However, few mitigations can be taken to reduce the indoor radon gas included to provide good ventilation system in the residence.