Arsenic accumulation in duckweed (Spirodela polyrhiza L.): A good option for phytoremediation

Rahman, MA; Hasegawa, H; Ueda, K; Maki, T; Okumura, C; Rahman, MM

Arsenic accumulation in duckweed (Spirodela polyrhiza L.): A good option for phytoremediation

Rahman, MA

Hasegawa, H Ueda, K Maki, T Okumura, C Rahman, MM

Permalink

Publication Type:: Journal Article
Citation:: Chemosphere, 2007, 69 (3), pp. 493 - 499
Issue Date:: 2007-09-01

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download full textAdobe PDF (137.88 kB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Rahman, MA https://orcid.org/0000-0002-8065-0286	en_US
dc.contributor.author	Hasegawa, H	en_US
dc.contributor.author	Ueda, K	en_US
dc.contributor.author	Maki, T	en_US
dc.contributor.author	Okumura, C	en_US
dc.contributor.author	Rahman, MM	en_US
dc.date.available	2007-04-04	en_US
dc.date.issued	2007-09-01	en_US
dc.identifier.citation	Chemosphere, 2007, 69 (3), pp. 493 - 499	en_US
dc.identifier.issn	0045-6535	en_US
dc.identifier.uri	http://hdl.handle.net/10453/14752
dc.description.abstract	Some unavoidable drawbacks of traditional technologies have made phytoremediation a promising alternative for removal of arsenic from contaminated soil and water. In the present study, the potential of an aquatic macrophyte Spirodela polyrhiza L. for phytofiltration of arsenic, and the mechanism of the arsenic uptake were investigated. The S. polyrhiza L. were grown in three test concentrations of arsenate and dimethylarsinic acid (DMAA) (i.e. 1.0, 2.0 and 4.0 μM) with 0 (control), 100 or 500 μM of phosphate. One control treatment was also set for each test concentrations of arsenic. The PO43 - concentration in control treatment was 0.02 μM. When S. polyrhiza L. was cultivated hydroponically for 6 d in culture solution containing 0.02 μM phosphate and 4.0 μM arsenate or DMAA, the arsenic uptake was 0.353 ± 0.003 μmol g-1 and 7.65 ± 0.27 nmol g-1, respectively. Arsenic uptake into S. polyrhiza L. was negatively (p < 0.05) correlated with phosphate uptake when arsenate was applied to the culture solutions owing to similar in the sorption mechanism between AsO43 - and PO43 -, and positively (p < 0.05) correlated with iron uptake due to adsorption of AsO43 - onto iron oxides. Thus, the S. polyrhiza L. accumulates arsenic by physico-chemical adsorption and via the phosphate uptake pathway when arsenate was added to the solutions. These results indicate that S. polyrhiza L. would be a good arsenic phytofiltrator. In contrast, DMAA accumulation into S. polyrhiza L. was neither affected by the phosphate concentration in the culture nor correlated (p > 0.05) with iron accumulation in plant tissues, which indicates that S. polyrhiza L. uses different mechanisms for DMAA uptake. © 2007 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	Chemosphere	en_US
dc.relation.isbasedon	10.1016/j.chemosphere.2007.04.019	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.classification	Meteorology & Atmospheric Sciences	en_US
dc.subject.mesh	Plants	en_US
dc.subject.mesh	Arsenic	en_US
dc.subject.mesh	Water Pollutants, Chemical	en_US
dc.subject.mesh	Oxidation-Reduction	en_US
dc.subject.mesh	Chlorophyta	en_US
dc.title	Arsenic accumulation in duckweed (Spirodela polyrhiza L.): A good option for phytoremediation	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	69	en_US
utslib.for	0502 Environmental Science and Management	en_US
utslib.for	039901 Environmental Chemistry (incl. Atmospheric Chemistry)	en_US
pubs.embargo.period	Not known	en_US
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 Life Sciences
utslib.copyright.status	open_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	69	en_US

Abstract:

Some unavoidable drawbacks of traditional technologies have made phytoremediation a promising alternative for removal of arsenic from contaminated soil and water. In the present study, the potential of an aquatic macrophyte Spirodela polyrhiza L. for phytofiltration of arsenic, and the mechanism of the arsenic uptake were investigated. The S. polyrhiza L. were grown in three test concentrations of arsenate and dimethylarsinic acid (DMAA) (i.e. 1.0, 2.0 and 4.0 μM) with 0 (control), 100 or 500 μM of phosphate. One control treatment was also set for each test concentrations of arsenic. The PO43 - concentration in control treatment was 0.02 μM. When S. polyrhiza L. was cultivated hydroponically for 6 d in culture solution containing 0.02 μM phosphate and 4.0 μM arsenate or DMAA, the arsenic uptake was 0.353 ± 0.003 μmol g-1 and 7.65 ± 0.27 nmol g-1, respectively. Arsenic uptake into S. polyrhiza L. was negatively (p < 0.05) correlated with phosphate uptake when arsenate was applied to the culture solutions owing to similar in the sorption mechanism between AsO43 - and PO43 -, and positively (p < 0.05) correlated with iron uptake due to adsorption of AsO43 - onto iron oxides. Thus, the S. polyrhiza L. accumulates arsenic by physico-chemical adsorption and via the phosphate uptake pathway when arsenate was added to the solutions. These results indicate that S. polyrhiza L. would be a good arsenic phytofiltrator. In contrast, DMAA accumulation into S. polyrhiza L. was neither affected by the phosphate concentration in the culture nor correlated (p > 0.05) with iron accumulation in plant tissues, which indicates that S. polyrhiza L. uses different mechanisms for DMAA uptake. © 2007 Elsevier Ltd. All rights reserved.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/14752