| Autor: |
V. D., Kamalakar, P. R., Vinutha, C. S., Kaliprasad, Y., Narayana |
| Předmět: |
|
| Zdroj: |
Environmental Forensics; Jun-Aug2024, Vol. 25 Issue 4, p180-190, 11p |
| Abstrakt: |
The radiation level, radionuclide distribution, and dependence of radioactivity on physico-chemical parameters of soils have been studied in Belagavi region of Karnataka, India. The gamma dose rates in air were measured using a portable survey metre, and the activity in soils was measured using NaI (Tl)-based gamma ray spectrometer. The measured absorbed dose rate in air ranges from 54 to 77 nGy h−1 with a mean value of 58 nGy h−1. The 40K activity in soil was found to vary from 97.9 to 378.5 Bq kg−1 with an average of 214.2 Bq kg−1. The 226Ra activity varied from 15.3 to 68.8 Bq kg−1 with an average value of 30.5 Bq kg−1 and the activity of 232Th varied from 12.3 to 65.4 Bq kg−1 with an average value of 27.96 Bq kg−1. The activity of 226Ra and 232Th were found to be higher than the world average value in some locations of the study area. A good positive correlation was observed between the activity concentration of radionuclides and physico-chemical parameters of soil. A good positive correlation was observed between the activity of 226Ra and 232Th with clay with a correlation coefficient of r = 0.609 and 0.591, respectively. The frequency distribution curve of 226Ra, 232Th, and 40K are lognormal in nature. The application of cluster analysis and principal component analysis were carried out using IBM SPSS software for better understanding of dynamics of soil matrix and the dependence of soil radioactivity on the physico-chemical parameters of the soil. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
