OrbHab Paper
Uptake And Distribution Of Metals By Water Lettuce (Pistia stratiotes L.) (2011)
ID: 363 Flag Paper
Title: Uptake And Distribution Of Metals By Water Lettuce (Pistia stratiotes L.)
Authors: Q. Lu, Z. He, D. Graetz, P. Stoffella, X. Yang
Journal Name: Environmental Science and Pollution Research
Year of Publication: 2011
Page Number: 978
Category: biosphere
Availability: pdf
Detail Page: /papers/363
Web Link: https://www.researchgate.net/publication/49803997_Uptake_and_distribution_of_metals_by_water_lettuce_Pistia_stratiotes_L
BoK Link: [[paper:363]]
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.
Title: Uptake And Distribution Of Metals By Water Lettuce (Pistia stratiotes L.)
Authors: Q. Lu, Z. He, D. Graetz, P. Stoffella, X. Yang
Journal Name: Environmental Science and Pollution Research
Year of Publication: 2011
Page Number: 978
Category: biosphere
Availability: pdf
Detail Page: /papers/363
Web Link: https://www.researchgate.net/publication/49803997_Uptake_and_distribution_of_metals_by_water_lettuce_Pistia_stratiotes_L
BoK Link: [[paper:363]]
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.