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Title: Radionuclide (<sup>226</sup>Ra,<sup>232</sup>Th,<sup>40</sup>K) accumulation among plant species in mangrove ecosystems of Pattani Bay, Thailand
Authors: Pungtip Kaewtubtim
Weeradej Meeinkuirt
Sumalee Seepom
John Pichtel
Faculty of Science and Technology
Mahidol University
Ball State University
Keywords: Agricultural and Biological Sciences;Earth and Planetary Sciences;Environmental Science
Issue Date: 15-Feb-2017
Citation: Marine Pollution Bulletin. Vol.115, No.1-2 (2017), 391-400
Abstract: © 2016 Elsevier Ltd Little is known regarding phytoremediation of radionuclides from soil; even less is known about radionuclide contamination and removal in tropical ecosystems such as mangrove forests. In mangrove forests in Pattani Bay, Thailand, 18 plant species from 17 genera were evaluated for radionuclide concentrations within selected plant parts. Two shrub species, Avicennia marina and Pluchea indica, accumulated the highest232Th (24.6 Bq kg− 1) and40K (220.7 Bq kg− 1) activity concentrations in roots, respectively. Furthermore, the aquatic species Typha angustifolia accumulated highest232Th,40K and226Ra activity concentrations (85.2, 363.5, 16.6 Bq kg− 1, respectively) with the highest transfer factors (TFs) (3.0, 2.0, 5.9, respectively) in leaves. Leaves of T. angustifolia had an absorbed dose rate in air (D) over the recommended value (74.8 nGy h− 1) that was considered sufficiently high to be of concern for human consumption.
ISSN: 18793363
Appears in Collections:Scopus 2016-2017

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