Arsenic uptake by aquatic macrophyte Spirodela polyrhiza L.: Interactions with phosphate and iron

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dc.contributor.author Rahman, Mohammad en_US
dc.contributor.author Hasegawa, Hirosha en_US
dc.contributor.author Ueda, Kaori en_US
dc.contributor.author Maki, Teruya en_US
dc.contributor.editor en_US
dc.date.accessioned 2012-02-02T10:56:50Z
dc.date.available 2012-02-02T10:56:50Z
dc.date.issued 2008 en_US
dc.identifier 2010005078 en_US
dc.identifier.citation Rahman Mohammad et al. 2008, 'Arsenic uptake by aquatic macrophyte Spirodela polyrhiza L.: Interactions with phosphate and iron', Elsevier Science, vol. 160, no. 2-3, pp. 356-361. en_US
dc.identifier.issn 0304-3894 en_US
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/15370
dc.description.abstract The uptake of arsenate (As(V)) and dimethylarsinic acid (DMAA) by aquatic macrophyte Spirodela polyrhiza L. was investigated to determine the influence of arsenic interaction with PO43- and Fe ions. Plants were grown hydroponically on standard Murashige and Skoog (MS) culture solutions. Arsenic concentrations in Fe-oxide (Fe-plaque) on plant surfaces were determined by citrate?bicarbonate?ethylenediaminetetraacetic acid (CBE) technique. S. polyrhiza L. accumulated 51-fold arsenic from arsenate solution compared to that from DMAA solution with initial concentrations of 4.0 and 0.02 ?M of arsenic and phosphate, respectively. The arsenate uptake was negatively (p < 0.001) correlated with phosphate uptake and positively (p < 0.05) correlated with iron uptake. About 56% of the total arsenic was accumulated into the plant tissues while 44% was adsorbed on Fe-plaque (CBE-extract), when the plants were grown on arsenate solution. The DMAA uptake into the plant was neither affected by the phosphate concentrations nor correlated (p > 0.05) with iron accumulation. The results suggest that adsorption of arsenate on Fe-plaque of the surface of S. polyrhiza L. contributes to the arsenic uptake significantly. Thus, arsenate uptake in S. polyrhiza L. occurred through the phosphate uptake pathway and by physico-chemical adsorption on Fe-plaques of plant surfaces as well. The S. polyrhiza L. uses different mechanisms for DMAA uptake. en_US
dc.language en_US
dc.publisher Elsevier Science en_US
dc.relation.hasversion Accepted Manuscript version en_US
dc.relation.isbasedon http://dx.doi.org/10.1016/j.jhazmat.2008.03.022 en_US
dc.rights NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Hazardous Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Hazardous Materials, [Volume 160, Issues 2–3, 30 December 2008, Pages 356–361] DOI#” http://dx.doi.org/10.1016/j.jhazmat.2008.03.022 en_US
dc.title Arsenic uptake by aquatic macrophyte Spirodela polyrhiza L.: Interactions with phosphate and iron en_US
dc.parent Journal of Hazardous Materials en_US
dc.journal.volume 160 en_US
dc.journal.number 2-3 en_US
dc.publocation Amsterdam, Netherlands en_US
dc.identifier.startpage 356 en_US
dc.identifier.endpage 361 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 090400 en_US
dc.personcode 112851 en_US
dc.personcode 0000070237 en_US
dc.personcode 0000070241 en_US
dc.personcode 0000070240 en_US
dc.percentage 100 en_US
dc.classification.name Chemical Engineering en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Arsenate; DMAA; Uptake; Interactions; Physico-chemical adsorption; Fe-plaque; Spirodela polyrhiza L en_US
dc.staffid 112851 en_US


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