OCCURRENCE AND DOSE FROM INTAKE OF RADON IN DRINKING GROUNDWATER IN OGUN STATE, NIGERIA.

Radon-222 concentrations in groundwater from 10 local government areas (LGAs) of Ogun State were measured using AlphaGUARD radon detector and AquaKIT. The mean activity concentration of radon ranged from 1.23 ± 0.

EXHALATION OF RADON FROM NATURALLY OCCURRING RADIOACTIVE MATERIALS (NORM) IN NIGERIA.

Radon-222 mass exhalation rate, EM, and surface exhalation rate, EA, have been determined for some building materials and fertilizers in Nigeria by accumulation method using AlphaGUARD radon monitor. The building materials include granite, cement, tile, white marble, brick, concrete and sand. The mean EM of the building materials varied from 0.

RADON-222 ASSESSMENT AND ESTIMATION OF ANNUAL EFFECTIVE DOSE IN GROUNDWATER IN LAGOS STATE, NIGERIA.

Radon-222 concentration in groundwater from Lagos State, Nigeria was measured. The arithmetic means of the radon concentration in the water ranged between 0.138 ± 0.

Radon-222 in groundwater and effective dose due to ingestion and inhalation in the city of Ibadan, Nigeria.

Radon concentration in groundwater collected from the eleven Local Government Areas (LGAs) of Ibadan, Nigeria, was analyzed. Annual effective doses due to ingestion and inhalation of radon from the consumption of the water were determined. The arithmetic means (AMs) of radon concentration for the 11 LGAs varied from 2.