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

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dc.contributor.author Rahman, MA
dc.contributor.author Hasegawa, H
dc.contributor.author Ueda, K
dc.contributor.author Maki, T
dc.contributor.author Rahman, MA
dc.date.accessioned 2012-02-02T10:56:50Z
dc.date.issued 2008-01
dc.identifier.citation Journal of Hazardous Materials, 2008, 160 (2-3), pp. 356 - 361
dc.identifier.issn 0304-3894
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 citratebicarbonateethylenediaminetetraacetic 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 µM 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.
dc.publisher Elsevier Science
dc.relation.hasversion Accepted Manuscript version en_US
dc.relation.isbasedon 10.1016/j.jhazmat.2008.03.022
dc.title Arsenic uptake by aquatic macrophyte Spirodela polyrhiza L.: Interactions with phosphate and iron
dc.type Journal Article
dc.parent Journal of Hazardous Materials
dc.journal.volume 2-3
dc.journal.volume 160
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 0904 Chemical Engineering
dc.personcode 112851
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
dc.description.keywords DMAA
dc.description.keywords Uptake
dc.description.keywords Interactions
dc.description.keywords Physico-chemical adsorption
dc.description.keywords Fe-plaque
dc.description.keywords Spirodela polyrhiza L
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Environmental Science
utslib.copyright.status Open Access
utslib.copyright.date 2015-04-15 12:23:47.074767+10
pubs.consider-herdc false
utslib.collection.history General (ID: 2)


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