Abstract
Radon-222, a naturally occurring radioisotope with a half-life 3.8 days was used to estimate the amount of radium and uranium in the marine and coastal sediments of Khor-Abdullaha bay, part of Arabian Gulf. The method used to estimate radon concentration in sediments was the SSNTDs techniques using closed can technique and RAD7 electronic instrument. The obtained average value of radon flux was 304.3 ± 79.4 Bq m-3. The maximum and minimum values were; 606.8± 157.3 Bq m-3 and 78.6±21.3 Bq m-3 respectively. These values are much lower than the reported worldwide limit which indicates the safe use of these sediments as building materials and other uses. The closed can technique is suitable to estimate the radium content in solid samples.
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