JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

About Journal
    Editor in Chief
    Editorial Board
    Reviewer Panel
    Publication Policies
    Guidelines for Editors
    Guidelines for Reviewers
    Abstracting and Indexing
    Subscription and Payments
    Contact Journal
Read Journal
    Current Issue
    Journal Archives
For Authors
    Guidelines for Authors
    Terms and Conditions
    Fees and Payments
    Track Paper Status
    JEB Awards

Google Search the Journal web-site:

    Abstract - Issue Sep 2012, 33 (5)                                     Back

nstantaneous and historical temperature effects on a-pinene

Studies on radionuclides 228Ra, 238U, 228Th and 40 K in selected seaweeds

of coastal Tamil Nadu, India


Author Details


P. Mary Saroja

(Corresponding Author)

Department of Chemistry, Holy Cross College, Nagercoil- 629 004, India.

e-mail :

G. Immanuel

Centre for Marine Science and Technology, Manonmaniam Sundaranar University,

Rajakkamangalam- 629 520,?? India.

G. Allen Gnana Raj

Department of Chemistry and Research Centre, Scott Christian College, Nagercoil - 629 003,


K. Esai Selvan

Health Physics Unit, Environmental Assessment Division, Indian Rare Earths Limited,

Manavalakurichi- 629 252, India.



Publication Data

Paper received:

28 January 2011


Revised received:

03 July 2011



06 August 2011



Studies on natural and anthropogenic radioactivity assume greater importance in the context of human health and development. Hence? two species of seaweeds viz: Gracilaria edulis and Ulva lactuca, from three high background radiation areas (Arockiapuram, Kadiapattinam and Kurumpanai)? on the southwest coast of Tamil Nadu, and Mandapam as low background radiation area of the southeast coast of Tamil Nadu were studied for variations in activity concentration of 228 Ra, 40 K, 238 U and 228 Th.? Among these radionuclides, 40K recorded significant inter-species variation while 238 U and 228 Th showed significant association. The overall mean concentration of radionuclides was found high in G.edulis (5.31, 57.49, 36.05, 356.55 Bq kg-1 for 228 Ra, 40K, 238U, 228 Th respectively), while the mean concentrations for U.lactuca were 4.88, 42.35, 34.40, 347.70 Bqkg-1 for 228 Ra, 40K, 238U, 228 Th respectively. The mean concentration of radionuclides was uniformly found low during northeast monsoon season in both the seaweed species.


Key words

Gracilaria edulis, Ulva lactuca,Seaweeds, Radionuclides, Activity concentration??


Copyright ? 2012 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).