NDLI: Uptake and distribution of metals by water lettuce (Pistia stratiotes L.)

Content Provider	Springer Nature Link
Author	Lu, Qin He, Zhenli L. Graetz, Donald A. Stoffella, Peter J. Yang, Xiaoe
Copyright Year	2011
Abstract	Water quality impairment by heavy metal contamination is on the rise worldwide. Phytoremediation technology has been increasingly applied to remediate wastewater and stormwater polluted by heavy metals.Laboratory analysis and field trials were conducted to evaluate the uptake of metals (Al, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn) by an aquatic plant, water lettuce (Pistia stratiotes L.), and metal distribution in the plant.The growth of water lettuce reduced Al, Fe, and Mn concentrations in water by >20%, K and Cu by >10%, and Ca, Mg, Zn, and Na to a lesser extent. A larger proportion of Ca, Cd, Co, Fe, Mg, Mn, and Zn was adsorbed or deposited on the external root surfaces while more Al, Cr, Cu, Ni, and Pb were absorbed and accumulated within the roots.Water lettuce has a great ability in concentrating metals from its surrounding water with a concentration factor (CF) ≥10$^{2}$. The bio-concentration factor (BCF), which excludes the part on the root surfaces, is a more appropriate index than the CF for the differentiation of hyperaccumulation, accumulation, or non-accumulation plants for metals.Water lettuce is a hyperaccumulator for Cr, Cu, Fe, Mn, Ni, Pb, and Zn and can be applied for the remediation of surface waters.Further study on the bioavailability of metals in the water lettuce is needed for the beneficial use of metal-enriched plant biomass.
Starting Page	978
Ending Page	986
Page Count	9
File Format	PDF
ISSN	09441344
Journal	Environmental Science and Pollution Research
Volume Number	18
Issue Number	6
e-ISSN	16147499
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-02-02
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Dithionite–citrate–bicarbonate (DCB) extraction Metal accumulation Stormwater Water lettuce (Pistia stratiotes L.) Industrial Pollution Prevention Atmospheric Protection/Air Quality Control/Air Pollution Environment Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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