Radon in soil gas of Johor, Malaysia
Keywords:
222Rn in sol gas, geological formations, soil types;, spatial distributionAbstract
Communication in Physical Sciences, 2021, 7(4): 411- 422
Authors:Haruna*, M. A Saleh, S. Hashim
Received:07 September 2021/Accepted 30 November 2021
This study was conducted to establish baseline data for radon (222Rn) activity concentration in soil gas of Johor, Malaysia. RAD7 alpha detector was used to measure the activity concentration of 222Rn in soil gas. The descriptive statistic and hypothesis tests were done using SPSS software. An inverse distance weighting interpolation (IDW) technique was used to obtain the spatial distribution of the measured 222Rn in soil gas in the ArcGIS software. The measured activity concentration of 222Rn in soil gas varies from MDA to 127250 Bq m⁻3. Higher values of 222Rn in soil gas were found in the soil developed from granitic rocks. A statistically significant difference in the median values of 222Rn activity concentration among the soil types and geological formations of Johor state (P=0.008 and P=0.028, respectively) was observed. A map of the spatial distribution of the measured 222Rn activity concentration in soil gas was created.
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