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This paper discusses the relation between the heavy metal and radionuclide activity concentration in beach sand samples collected from East Coast of Tamilnadu. The elemental composition in beach sands is determined by EDXRF technique. The mean concentrations of elements followed in the order of Si &gt; Ca &gt; Fe &gt; Al &gt; Mg &gt; K &gt; Ti &gt; Mn &gt; Zr &gt; Sr &gt; Zn &gt; Pb &gt; Ni &gt; Cu &gt; Cd &gt; Co in the study area. A NaI(Tl) gamma-ray spectrometer has been used to determine activity concentration of  238 U,  232 Th and  40 K in sand samples. The measured activity in the sand samples ranged from 3.0 to 1766.8 Bqkg −1 , 3.0 to 8326.88 Bqkg −1  and 11 to 1434.9 Bqkg −1  for  238 U,  232 Th and  40 K, respectively. The measured natural radioactivity concentration was compared with worldwide average values as reported by UNSCEAR. The interrelation between the natural radioactivity and heavy metal concentration is determined using Pearson correlation coefficient, factor and cluster analysis for finding existing relation between them. The results showed that there is a significant relation of heavy metals for heavy minerals which can contribute radioactivity concentration based on the correlation and factor analysis.

international journal of environmental analytical chemistry

Assessment of heavy metals and radionuclides ( 238 U,  232 Th and  40 K) concentration of beach sands collected from East Coast of Tamilnadu, India with multivariate statistical approach