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Bioavailability, fractionation of Pb and Zn in the rhizosphere of sunflower in chelators-amended contaminated soil

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Abstract
Assisted phytoremediation procedures have been widely employed as soil removal instrument of heavy metals from contaminated soils. Rhizosphere processes have a major impact on pb and Zn availability and its fractions in soils. The present study evaluates the effects of EDTA, citric acid (CA) and poultry manure extract (PME) on bioavailability and fractionation of pb, Zn in both the rhizosphere of sunflower (Helianthus annuus L.) and bulk soil. EDTA and CA were added to soils at the rates of 0, 0.5 and 1 mmol kg(-1) soil and PME at 0, 0.5 and 1 g kg(-1) soil as factorial in a completely randomized pattern with three replicates in greenhouse condition. Results showed that chelator application had a significant impact (p < 0.05) on pb, Zn extraction by different extractants and its fractions in soils. The order of concentrations of pb, Zn present in different fractions in soil treated by chelators was: oxides-bounded fraction > residual fraction > OM-bounded fraction > carbonate-bounded fraction > exchangeable fraction. Biochemical soil characteristics in the sunflower rhizosphere change resulting from its roots contributing to pb, Zn decline in mobile soil fractions, and change in soil pb, Zn fractions that are generally regarded as more stable.
Keywords
Bioavailability, chelator, rhizosphere, fractionation, SEWAGE-SLUDGE, HEAVY-METALS, CALCAREOUS SOILS, ZINC, EXTRACTION, CU, SPECIATION, EDTA, NI, AVAILABILITY

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MLA
Rahmanian, Mohamad et al. “Bioavailability, Fractionation of Pb and Zn in the Rhizosphere of Sunflower in Chelators-amended Contaminated Soil.” ARCHIVES OF AGRONOMY AND SOIL SCIENCE 65.7 (2019): 957–967. Print.
APA
Rahmanian, M., Hosseinpur, A. R., Manouchehri, N., & Cornelis, W. (2019). Bioavailability, fractionation of Pb and Zn in the rhizosphere of sunflower in chelators-amended contaminated soil. ARCHIVES OF AGRONOMY AND SOIL SCIENCE, 65(7), 957–967.
Chicago author-date
Rahmanian, Mohamad, Ali Reza Hosseinpur, Nastaran Manouchehri, and Wim Cornelis. 2019. “Bioavailability, Fractionation of Pb and Zn in the Rhizosphere of Sunflower in Chelators-amended Contaminated Soil.” Archives of Agronomy and Soil Science 65 (7): 957–967.
Chicago author-date (all authors)
Rahmanian, Mohamad, Ali Reza Hosseinpur, Nastaran Manouchehri, and Wim Cornelis. 2019. “Bioavailability, Fractionation of Pb and Zn in the Rhizosphere of Sunflower in Chelators-amended Contaminated Soil.” Archives of Agronomy and Soil Science 65 (7): 957–967.
Vancouver
1.
Rahmanian M, Hosseinpur AR, Manouchehri N, Cornelis W. Bioavailability, fractionation of Pb and Zn in the rhizosphere of sunflower in chelators-amended contaminated soil. ARCHIVES OF AGRONOMY AND SOIL SCIENCE. 2019;65(7):957–67.
IEEE
[1]
M. Rahmanian, A. R. Hosseinpur, N. Manouchehri, and W. Cornelis, “Bioavailability, fractionation of Pb and Zn in the rhizosphere of sunflower in chelators-amended contaminated soil,” ARCHIVES OF AGRONOMY AND SOIL SCIENCE, vol. 65, no. 7, pp. 957–967, 2019.
@article{8602708,
  abstract     = {Assisted phytoremediation procedures have been widely employed as soil removal instrument of heavy metals from contaminated soils. Rhizosphere processes have a major impact on pb and Zn availability and its fractions in soils. The present study evaluates the effects of EDTA, citric acid (CA) and poultry manure extract (PME) on bioavailability and fractionation of pb, Zn in both the rhizosphere of sunflower (Helianthus annuus L.) and bulk soil. EDTA and CA were added to soils at the rates of 0, 0.5 and 1 mmol kg(-1) soil and PME at 0, 0.5 and 1 g kg(-1) soil as factorial in a completely randomized pattern with three replicates in greenhouse condition. Results showed that chelator application had a significant impact (p < 0.05) on pb, Zn extraction by different extractants and its fractions in soils. The order of concentrations of pb, Zn present in different fractions in soil treated by chelators was: oxides-bounded fraction > residual fraction > OM-bounded fraction > carbonate-bounded fraction > exchangeable fraction. Biochemical soil characteristics in the sunflower rhizosphere change resulting from its roots contributing to pb, Zn decline in mobile soil fractions, and change in soil pb, Zn fractions that are generally regarded as more stable.},
  author       = {Rahmanian, Mohamad and Hosseinpur, Ali Reza and Manouchehri, Nastaran and Cornelis, Wim},
  issn         = {0365-0340},
  journal      = {ARCHIVES OF AGRONOMY AND SOIL SCIENCE},
  keywords     = {Bioavailability,chelator,rhizosphere,fractionation,SEWAGE-SLUDGE,HEAVY-METALS,CALCAREOUS SOILS,ZINC,EXTRACTION,CU,SPECIATION,EDTA,NI,AVAILABILITY},
  language     = {eng},
  number       = {7},
  pages        = {957--967},
  title        = {Bioavailability, fractionation of Pb and Zn in the rhizosphere of sunflower in chelators-amended contaminated soil},
  url          = {http://dx.doi.org/10.1080/03650340.2018.1541088},
  volume       = {65},
  year         = {2019},
}

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