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Phytoaccumulation Potential and Toxicity of Arsenic Ions by Eichhornia Crassipes in Hydroponic System | OMICS International | Abstract
ISSN: 2155-6199

Journal of Bioremediation & Biodegradation
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Research Article

Phytoaccumulation Potential and Toxicity of Arsenic Ions by Eichhornia Crassipes in Hydroponic System

A. K. Giri and R. K. Patel*
Department of Chemistry, National Institute of Technology, Rourkela-769008, Orissa, India
Corresponding Author : R. K. Patel
Department of Chemistry, National Institute of Technology
Rourkela-769008, Orissa, India
Tel: +91-661 2462652
Fax: +91- 661-2462651
Received December 08, 2011; Accepted February 07, 2012; Published February 09, 2012
Citation: Giri AK, Patel RK (2012) Phytoaccumulation Potential and Toxicity of Arsenic Ions by Eichhornia Crassipes in Hydroponic System. J Bioremed Biodegrad 3:137. doi: 10.4172/2155-6199.1000137
Copyright: © 2012 Giri AK, et al. This is an open-a ccess article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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In this work, the phytoaccumulation efficiency of total arsenic (As) by the aquatic plant E. crassipes has been studied. Plants were cultured in double distillated water with modified 0.25 N Hoagland’s nutrient solution at pH 6.8 supplemented with 0, 0.010, 0.025, 0.05, and 0.10 mgL -1 equally mixing (1:1) arsenic (III) and arsenic (V). They were harvested after 0, 3, 9 and 15 days. Plants treated with 0.10 mgL -1 arsenic solutions, accumulated the highest concentration in roots (7.2 mg kg -1 , dry weight) and shoots (32.1 mg kg -1 , dry weight) respectively after 15 days. SEM-EDX and FTIR were used to characterize the interaction between arsenic ions and extract materials of E. crassipes shoot biomass. The FTIR spectra indicated the binding characteristics of the arsenic ions involved the hydroxyl, amide, amino and thiol groups in the biomass. The relative growth and bio-concentration factor of plants at different concentration of arsenic solutions significantly increases (P < 0.05) with the passage of time. From the above studies it is clear that the plant E. crassipes can be used successfully for the removal of arsenic ions by phytoremediation process.


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