Arsenic adsorption on iron plaque and uptake in duckweed (Spirodela polyrhiza L.) affected by chemical species

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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 Okumura, C
dc.contributor.author Rahman, MA
dc.contributor.editor Starrett, SK
dc.contributor.editor Hong, J
dc.contributor.editor Wilcock, RJ
dc.contributor.editor Li, Q
dc.contributor.editor Carson, JH
dc.contributor.editor Arnold, S
dc.date.accessioned 2012-02-02T02:06:01Z
dc.date.issued 2007-01
dc.identifier.citation Environmental Science and Technology, 2007, 1, pp. 319 - 325
dc.identifier.isbn 978-0976885382
dc.identifier.other B1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/14253
dc.description.abstract The effect of iron plaque formation on plant surfaces and chemical species on arsenic uptake in Spirodela polyrhiza L. were investigated. Arsenate [As(V)] or arsenite [As(III)] concentration in S. polyrhiza L. was significantly (p < 0.05) higher than that of methyl arsenic species (MMAA or DMAA). In particular, the concentrations of As(V) and As(III) in CBE-extracts of plants with Fe-plaque were about 43% and 58% respectively higher then plants without Fe-plaque,. On the other hand, the As(V) and As(III) concentrations in tissues of plants with or without Fe-plaque remained almost unchanged. The results suggest that a significant amount of arsenate and arsenite were adsorbed on the Fe-plaque of S. polyrhiza L. surfaces. The concentrations of MMAA and DMAA in tissues and on CBEextracts of S. polyrhiza L. were not significantly affected (p > 0.05) by the Fe-plaque on plant surfaces. These results indicate that methyl arsenic species might not be adsorbed on Fe-plaques. However, the significantly higher concentration of MMAA into the plant tissues than that of DMAA suggests that MMAA is more bioavailable to this plant. The ratios of As/P and As/Fe were significantly higher in tissues and CBE-extracts of plants exposed to inorganic arsenic species than plants exposed to methyl arsenic species. The results indicate enhanced uptake and adsorption of As(V) and As(III) than MMAA and DMAA in relation to phosphate and iron.
dc.publisher American Science Press
dc.title Arsenic adsorption on iron plaque and uptake in duckweed (Spirodela polyrhiza L.) affected by chemical species
dc.type Chapter
dc.description.version Published
dc.parent Environmental Science and Technology
dc.journal.number en_US
dc.publocation Texas, USA en_US
dc.publocation Texas, USA
dc.publocation Texas, USA
dc.publocation Texas, USA
dc.publocation Texas, USA
dc.publocation Texas, USA
dc.publocation Texas, USA
dc.publocation Texas, USA
dc.identifier.startpage 319 en_US
dc.identifier.endpage 325 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0502 Environmental Science and Management
dc.personcode 112851
dc.percentage 0 en_US
dc.classification.name Environmental Science and Management en_US
dc.classification.type FOR-08 en_US
dc.edition 1 en_US
dc.edition 1
dc.edition 1
dc.edition 1
dc.edition 1
dc.edition 1
dc.edition 1
dc.edition 1
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords en_US
dc.description.keywords Science & Technology
dc.description.keywords Physical Sciences
dc.description.keywords Oceanography
dc.description.keywords OCEANOGRAPHY
dc.description.keywords Data assimilation
dc.description.keywords Ecosystem modelling
dc.description.keywords Phytoplankton
dc.description.keywords Phytoplankton dynamics
dc.description.keywords Iron
dc.description.keywords SOUTHERN-OCEAN
dc.description.keywords NORTH-ATLANTIC
dc.description.keywords SAZ-SENSE
dc.description.keywords PRIMARY PRODUCTIVITY
dc.description.keywords 1D-ECOSYSTEM MODEL
dc.description.keywords PACIFIC SECTOR
dc.description.keywords MIXED-LAYER
dc.description.keywords 3 LOCATIONS
dc.description.keywords AUSTRALIA
dc.description.keywords BATS
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/Faculty of Science/School of the Environment
pubs.organisational-group /University of Technology Sydney/Strength - Environmental Science


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