Assessment of Natural Radioactivity and Radiation Hazard in Soil Samples of Rajbari District of Bangladesh

Abstract

The activity of naturally occurring 238 Rajbari district of Bangladesh, have been studied and possible health effect were estimated. The experiment has been done by using gamma ray spectrometry system consisting of a HPGe detector coupled with MCA and associate electronics. The average natur 29.03±5.67 Bq/kg, 50.91±10.17 Bq/kg and 535.32±89.19 Bq/kg respectively. To estimate health effect due to the activity of those radionuclides, the radium equivalent activity (Ra absorbed dose rate (D) and effective dose have been calculated and compared to the world average values. The results are also compared with the literature values reported for other regions of the world and found that the soil of the study area are not hazards by the radiation and does not pose any harmful effect to the environment. The outcome of this study may provide valuable information about radiation hazard and also may take part in the monitoring of environmental radioactivity.

Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace

“…Moreover, leaves are more exposed to aerial deposition, e.g., radionuclides in dust or radionuclide particles themselves, if there are any artificial phenomena in the surrounding environment or nearby countries. Therefore, tea plants may be subjected to direct and indirect contamination of various radionuclides, and these radionuclides can be distributed in different parts of the plants according to the chemical characteristics and parameters of the plants and soil [ 33 ]. Since tea forms the second most popular drink (after water) in all populations in Bangladesh, the presence of a low level of radioactive material in tea leaves may produce a non-negligible health hazard via cumulative exposures.…”

Measurement of Radioactivity And Assessment of Radiological Hazard of Tea Samples Collected From Local Market In Bangladesh

“…It is crucial to estimate the ingestion dose to the public. The ingestion dose above permissible level is very harmful for human being (Khatun et al 2013). In this study, the activity concentrations of natural ( 226 Ra, 232 Th and 40 K) and artificial (for example 137 Cs) radionuclides were determined in collected tea samples by using High purity Germanium detector (HPGe).The aim of this research work is not only the determination of radioactive nuclides in tea samples but also the determination of the radiological hazard parameters such as Absorbed dose rate, Radium equivalent activity, External hazard index, Annual effective dose for individual living being.…”

Measuring the Radioactivity Concentration of 40 K, 226 Ra, 232 Th and Radiological Risk Assessment from Water Tap

“…About 98% equilibrium level was attained for the duration. The natural 226 Ra, 232 Th, and 40 K radioactivity levels of the drinking water samples were measured using a gamma multi channel analyzer equipped with a high purity germanium coaxial detector (HPGe) system (Khatun et al, 2013;Majied & Anees, 2019) that shielded with 10 cm thick of lead to reduce the background radiation from various natural radiation sources and to isolate from other radiation sources used in nearby surrounding (Eric et al, 2016;Ahmed et al, 2014). The samples were placed directly on the tap of detector for the gamma analysis attempting to attain minimum counting error (Majied & Anees, 2019; El-Taher et al, 2019; El-Taher & Abdelhalim, 2014), and was counted for 86,400 (Najeba, 2019 b) seconds so as to achieve minimum counting error, also the background measured under the same conditions (Najeba, 2019 b, Ahmad et al, 2018;Altaf & Nasima, 2015).…”