1 23 Iranian Journal of Science and Technology, Transactions A: Science ISSN 1028-6276 Iran J Sci Technol Trans Sci DOI 10.1007/s40995-017-0167-3 Assessment of Contamination by Metals in Coastal Sediments from South East Coast of Tamil Nadu, India with Statistical Approach J. Chandramohan, A. Chandrasekaran, J. Prince Prakash Jebakumar, G. Elango & R. Ravisankar