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Title: Potential of Melastoma malabathricum as bio-accumulator for uranium and thorium from soil

Uranium and Thorium are naturally occuring radionuclides. However, due to anthropogenic activities in some locations their concentrations in the soils could be elevated. This study explores the potential of Melastoma malabathricum (locally known as ‘pokok senduduk’) as bio-accumulator of uranium and thorium from soils of three different study areas, namely former tin mining, industrial and residential/commercial areas in Peninsular Malaysia. The study found elevated concentrations of uranium and thorium in former tin mining soils as compared to natural abundance. However in industral and residential/commercial areas the concentrations are within the range of natural abundance. In terms of transfer factor (TF), in ex-mining areas TF > 1 for uranium in the leaf, stem and roots, indicating accumulation of uranium from soil. However for thorium TF < 1, indicating the occurence of transfer from soil to root, stem and leaf, but no accumulation. For other areas only transfer of uranium and thorium were observed. The results indicated the potential of Melastoma malabathricum to be used as bio-accumulatior of uranium, especially in areas of elevated concentration.
Authors:
 [1] ;  [2] ; ; ; ; ;  [3]
  1. Institute of Science, Universiti Teknologi MARA, 40450 Shah Alam (Malaysia)
  2. (Malaysia)
  3. Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam (Malaysia)
Publication Date:
OSTI Identifier:
22391638
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1659; Journal Issue: 1; Conference: NuSTEC2014: Nuclear Science, Technology, and Engineering Conference 2014, Skudai, Johor (Malaysia), 11-13 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BUILDUP; COMPARATIVE EVALUATIONS; CONCENTRATION RATIO; ELEMENT ABUNDANCE; MALAYSIA; MINING; RADIONUCLIDE MIGRATION; SOILS; THORIUM; THORIUM 232; URANIUM; URANIUM 238