|
|
 |
| |
|
|
|
Natural Radioactivity of 238U, 232Th, 40K in Selected Ground water of Bangladesh and Assessment of Radiological Hazards with Statistical Analyses |
|
|
|
PP: 257-267 |
|
|
|
doi:10.18576/jrna/060311
|
|
|
|
Author(s) |
|
|
|
Prianka Banik,
Saiful Islam,
Jannatul Ferdous,
Pradip Kumar Bakshi,
|
|
|
|
Abstract |
|
|
| Identification and quantification of gamma emitting radionuclides such as thorium, uranium etc. with long half-life plays a key role in environmental characterization and radiation protection. In order to do, ground waters from different places of Bangladesh have been collected and their gamma radioactivity was investigated. The gamma activity of radionuclides 238U, 232Th and 40K in ground water samples were determined by using HPGe gamma spectroscopy. The average gamma activity concentration of 238U is 2.59 Bq/L, 232Th is 2.45 Bq/L and 40K is 32.00 Bq/L. In this present study, the radiological hazard parameters due to the radioactivity of natural occurring radionuclides (NOR), such as, Radium equivalent activity (Raeq), Representative level index (RLI), Activity utilization index (AUI), Absorbed dose (D), Annual Effective Dose equivalent (AEDE), Annual gonadal dose equivalent (AGDE), External hazard index (Hex), Internal hazard index (Hin) and Excess lifetime cancer risk (ELCR) are assessed from the ground water samples. The calculated average value of AUI and AGDE is 0.056 and 28.28 μSv/y, respectively. Again, the average values of RLI and ELCR are 0.063 and 0.017 mSv reapectively. The Th/U ratio was calculated to assume preferable oxidation sate of Th and U. The Pearson correlation analysis and cluster analysis are employed to analyses the data and identify the correlation between the radiological hazard parameters with the natural occurring radionuclides. |
|
|
|
|
|
|
|
