Study the concentration of radioactive radon gas in groundwater samples of babylon governorate.

In this research, The concentrations of radioactive radon gas (222Rn) were measured for 21 samples of groundwater collected from different places in Babylon Governorate from 3/3/2022 to 3/4/2022, using RAD-7 (RAD-7 H2O) monitor. The Annual Effective Doses (AED) due to ingestion of 222Rn gas dissolved in water (for adults, children and infants) were calculated for each sample. The results show that 222Rn concentration in Bq/m3 was ranged from (8630 ∓ 1020) Bq/m3 to 0 Bq/m3, with an average of (2390.55 ∓ 489.527) Bq/m3. Some of the concentrations exceded the value recommended by World Health Organization (WHO) which equals 400 Bq/m3, but all the concentrations were below the value recommended by Environmental Protection Agency (EPA) which equals 11000 Bq/m3. The calculations of the Annual Effective Dose showed that all the AED for adults and children were bellow the value recommended by WHO which equals to (0.1 mSv/year), but for infants, the AED of the samples W1, W6 and W7 were above 0.1 mSv/year. [ABSTRACT FROM AUTHOR]