Influence of geochemical variation and heavy mineral component on primordial radionuclide presence in Tamiraparani River sediments
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- 作者：I. Inigo Valan ; I. Vijayalakshmi ; R. Mathiyarasu…
- 关键词：Primordial radionuclides ; Absorbed dose rate ; Geochemical parameters ; Heavy minerals ; Correlation matrix
- 刊名：Environmental Earth Sciences
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：76
- 期：2
- 全文大小：
- 刊物类别：Earth and Environmental Science
- 刊物主题：Geology; Hydrology/Water Resources; Geochemistry; Environmental Science and Engineering; Terrestrial Pollution; Biogeosciences;
- 出版者：Springer Berlin Heidelberg
- ISSN：1866-6299
- 卷排序：76
文摘
Gamma spectral analysis for the presence of primordial radionuclides was done on the sediment samples collected from Tamiraparani River, Tamil Nadu, India, which originates in the Western Ghats and flows towards the eastern side of the high background radiation region of Southern Malabar Coast (Kerala). The average activity concentration values for the primordial radionuclides were observed to be higher than the world median ranges reported by UNSCEAR (Report to general assembly with scientific annexes, vol 1, Annex B. United Nations, New York, http://www.unscear.org/docs/publications/2008/UNSCEAR_2008_Annex-B-CORR.pdf, 2008). The radiological parameters calculated for river sediments were found to be comparatively higher than the recommended values. The computed correlation matrix exhibited a positive correlation between various geochemical parameters and the activity concentration values of the primordial radionuclides. The heavy mineral analysis also showed a noticeable correlation with the activity of the actinides. The solid-state electrical conductivity studies on the heavy mineral samples were investigated to study their correlation with the activity of the primordial radionuclides.