Rights statement: This is the author’s version of a work that was accepted for publication in Chemosphere. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Chemosphere, 196, 2018 DOI: 10.1016/j.chemosphere.2017.12.191
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Effect of Exogenous Phosphate on the Lability and Phytoavailability of Arsenic in Soils
AU - Wang, Jinjin
AU - Zeng, Xibai
AU - Zhang, Hao
AU - Li, Yongtao
AU - Zhao, Shizhen
AU - Su, Shiming
AU - Bai, Lingyu
AU - Wang, Yanan
AU - Zhang, Tuo
N1 - This is the author’s version of a work that was accepted for publication in Chemosphere. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Chemosphere, 196, 2018 DOI: 10.1016/j.chemosphere.2017.12.191
PY - 2018/4
Y1 - 2018/4
N2 - The effect of exogenous phosphate (P, 200 mg·kg-1 soil) on the lability and phyto-availability of arsenic (As) was studied using the diffusive gradients in thin films (DGT) technique. Lettuce were grown on the As-amended soils following the stabilization of soil labile As after 90 day’s incubation. Phosphate (P) application generally facilitated plant growth except one grown on P-sufficient soil. Soil labile As concentration increased in all the soils after P application due to a competition effect. Plant As concentration increased in red soils collected from Hunan Province, while decreases were observed in the other soils. Even though, an overall trend of decrease was obtained in As phytoavailability along with the increase of DGT-measured soil labile P/As molar ratio. The functional equation between P/As and As phytoavailability provided a critical value of 1.7, which could be used as a guidance for rational P fertilization, thus avoiding overfertilization.
AB - The effect of exogenous phosphate (P, 200 mg·kg-1 soil) on the lability and phyto-availability of arsenic (As) was studied using the diffusive gradients in thin films (DGT) technique. Lettuce were grown on the As-amended soils following the stabilization of soil labile As after 90 day’s incubation. Phosphate (P) application generally facilitated plant growth except one grown on P-sufficient soil. Soil labile As concentration increased in all the soils after P application due to a competition effect. Plant As concentration increased in red soils collected from Hunan Province, while decreases were observed in the other soils. Even though, an overall trend of decrease was obtained in As phytoavailability along with the increase of DGT-measured soil labile P/As molar ratio. The functional equation between P/As and As phytoavailability provided a critical value of 1.7, which could be used as a guidance for rational P fertilization, thus avoiding overfertilization.
KW - Diffusive gradients in thin films
KW - phosphorus-arsenic interaction
KW - labile P/As molar ratio
U2 - 10.1016/j.chemosphere.2017.12.191
DO - 10.1016/j.chemosphere.2017.12.191
M3 - Journal article
VL - 196
SP - 540
EP - 547
JO - Chemosphere
JF - Chemosphere
SN - 0045-6535
ER -