The EDTA effect on phytoextraction of single and combined metals-contaminated soils using rainbow pink (Dianthus chinensis)

Lai, Hung-Yu; Chen, Zueng‐Sang

doi:10.1016/j.chemosphere.2005.01.020

Cited by 74 publications

(35 citation statements)

References 30 publications

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“…This result is in agreement with several previous studies (Lai and Chen, 2005;Luo et al, 2005;Meers et al, 2005), which reported many fold increase in Pb uptake by various plants in the presence of EDTA. Chen et al (2004) observed that the addition of EDTA (2.5 and 5 mmol kg ( Ruley et al, 2006).…”

Section: Lead Uptake By V Faba Roots In the Presence Of Organic Ligandssupporting

confidence: 83%

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Lead-induced genotoxicity to Vicia faba L. roots in relation with metal cell uptake and initial speciation

Shahid

Pinelli

Pourrut

et al. 2011

Ecotoxicology and Environmental Safety

228

102

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. Lead-induced genotoxicity to Vicia faba L.roots in relation with metal cell uptake and initial speciation. Ecotoxicology and Environmental Safety, Elsevier, 2011, vol. 74, pp. 78-84. <10.1016/j.ecoenv.2010 a b s t r a c tFormation of organometallic complexes in soil solution strongly influence metals phytoavailability. However, only few studies deal with the influence of metal speciation both on plant uptake and genotoxicity. In the present study, Vicia faba seedlings were exposed for 6 h in controlled hydroponic conditions to 5 mM of lead nitrate alone and chelated to varying degrees by different organic ligands.Ethylenediaminetetraacetic acid and citric acid were, respectively, chosen as models of humic substances and low weight organic acids present in natural soil solutions. Visual Minteq software was used to estimate free lead cations concentration and ultimately to design the experimental layout. For all experimental conditions, both micronucleus test and measure of lead uptake by plants were finally performed. Chelation of Pb by EDTA, a strong chelator, dose-dependently increased the uptake in V. faba roots while its genotoxicity was significantly reduced, suggesting a protective role of EDTA. A weak correlation was observed between total lead concentration absorbed by roots and genotoxicity (r 2 ¼0.65). In contrast, a strong relationship (r 2 ¼0.93) exists between Pb 2 + concentration in exposure media and genotoxicity in the experiment performed with EDTA. Citric acid induced labile organometallic complexes did not demonstrate any significant changes in lead genotoxicity or uptake. These results demonstrate that metal speciation knowledge could improve the interpretation of V. faba genotoxicity test performed to test soil quality.

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Section: Lead Uptake By V Faba Roots In the Presence Of Organic Ligandssupporting

confidence: 83%

“…EDTA, a strong organic chelator for metals, was chosen to act as a model compound for humic substances (Lai and Chen, 2005;Meers et al, 2005) and citric acid was chosen to model low-molecular-weight organic acids (Chen et al, 2003;Muhammad et al, 2009). …”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

Lead-induced genotoxicity to Vicia faba L. roots in relation with metal cell uptake and initial speciation

Shahid

Pinelli

Pourrut

et al. 2011

Ecotoxicology and Environmental Safety

228

102

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“…Chelate-induced phytoextraction is based on the fact that the application of chelating agents to the soil markedly increases metal accumulated by plants Alkorta 2001, Alkorta et al 2004). Synthetic chelators such as ethylene diamine tetraacetic acid (EDTA) and critic acid (CA) were proven to be very effective in enhancing the bioavailability of metals in soils, thus facilitating their plant absorption and translocation (Huang et al 1998, Lai and Chen 2005, Quartacci et al 2005, Evangelou et al 2006.…”

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confidence: 99%

Induced-phytoextraction of heavy metals from contaminated soil irrigated by industrial wastewater with Marvel of Peru (Mirabilis jalapa L.)

Sun¹,

Zhou²,

Yue³

et al. 2011

PLANT SOIL ENVIRON

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The primary objective of this study was to evaluate the effect of ethylene diamine tetraacetic acid (EDTA) and citric acid (CA) on Mirabilis jalapa L. growth and phytoextraction of heavy metals from the multi-metal contaminated soil. The results showed that the application of CA (5 and 8 mmol/kg) and EDTA (5 mmol/kg) increased plant growth, while when the concentration of EDTA was up to 8 mmol/kg, the shoot biomass significantly decreased relative to the control plants (P < 0.05); it suffered 48.1%, 53.1%, 58.9%, and 78.2% reduction, respectively, compared to CK, CA-5, CA-8, and EDTA-5. EDTA was more effective than CA at increasing heavy metal uptake in aerial parts of the plants, the shoot concentrations of Cd, Cu, Pb, and Zn increased by 0.55, 3.08, 3.28, and 1.0-fold in the 8 mmol/kg EDTA-treated soils relative to the treatment of 8 mmol/kg CA. The maximum of Cd, Cu, and Pb phytoextraction and remediation factor (RF) were found with 5 mmol/kg EDTA treatment. For Zn, 8 mmol/kg EDTA was most efficient in increasing Zn accumulation in aboveground of M. jalapa.

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“…However, results of most previous studies showed that chemical agents have negative effect on the growth of Indian mustard, sunflower, or corn and thus decreased the total removal of HMs by plants (Blaylock et al, 2007;Madrid et al, 2003;Turgut et al, 2004). After the application of chemical chelating agents, the risk of groundwater contamination may be increased because the mobility of HMs increased (Jiang et al, 2003;Lai et al, 2005). For those lands with sandy texture or high level of groundwater table, chemical agents should be carefully applied to decrease the health risk of groundwater quality (Lai & Chen, 2006;Wu et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…In Taiwan, most of these contaminated sites were restored with turnover/dilution and acid washing methods to reduce the total concentration of HM to conform the regulation announced. Besides the two techniques, phytoremediation was demonstrated to be a feasible method in treating these contaminated lands, which have large areas and low to medium level of HM concentration (Lai et al, 2005). It also accompanies with other environmental agenda, such as biomass energy, biodiversity, carbon sequestration, and soil quality (Dickinson et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Heavy Metals Contaminated Soils and Phytoremediation Strategies in Taiwan

Lai¹,

Su²,

Guo³

et al. 2011

Soil Contamination

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The EDTA effect on phytoextraction of single and combined metals-contaminated soils using rainbow pink (Dianthus chinensis)

Cited by 74 publications

References 30 publications

Lead-induced genotoxicity to Vicia faba L. roots in relation with metal cell uptake and initial speciation

Lead-induced genotoxicity to Vicia faba L. roots in relation with metal cell uptake and initial speciation

Induced-phytoextraction of heavy metals from contaminated soil irrigated by industrial wastewater with Marvel of Peru (Mirabilis jalapa L.)

Heavy Metals Contaminated Soils and Phytoremediation Strategies in Taiwan

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