TY - JOUR
T1 - Interactions between exogenous rare earth elements and phosphorus leaching in packed soil columns
AU - Liang, Tao
AU - Song, Wen Chong
AU - Wang, Ling Qing
AU - Kleinman, P. J.A.
AU - Cao, Hong Ying
N1 - Funding Information:
∗1Supported by the National Natural Science Foundation of China (Nos. 40871225 and 40571146) and the Short-Term Visiting Program for Advanced Scholars, Chinese Academy of Sciences. ∗2Corresponding author. E-mail: [email protected].
PY - 2010/10
Y1 - 2010/10
N2 - Rare earth elements (REEs) increasingly used in agriculture as an amendment for crop growth may help to lessen environmental losses of phosphorus (P) from heavily fertilized soils. The vertical transport characteristics of P and REEs, lanthanum (La), neodymium (Nd), samarium (Sm), and cerium (Ce), were investigated with addition of exogenous REEs at various doses to packed soil columns (20 cm deep). Vertical transfers of REEs and P were relatively small, with transport depths less than 6 cm for most REEs and P. Export of applied REEs in leachate accounted for less that 5% of inputs. The addition of Ce, Nd and Sm to soil columns significantly decreased concentrations of extractable soil P up to a depth of 4 cm, with soil P concentrations unaffected at depths > 4 cm. In general, REEs had little effect on the vertical leaching of P in packed soil columns.
AB - Rare earth elements (REEs) increasingly used in agriculture as an amendment for crop growth may help to lessen environmental losses of phosphorus (P) from heavily fertilized soils. The vertical transport characteristics of P and REEs, lanthanum (La), neodymium (Nd), samarium (Sm), and cerium (Ce), were investigated with addition of exogenous REEs at various doses to packed soil columns (20 cm deep). Vertical transfers of REEs and P were relatively small, with transport depths less than 6 cm for most REEs and P. Export of applied REEs in leachate accounted for less that 5% of inputs. The addition of Ce, Nd and Sm to soil columns significantly decreased concentrations of extractable soil P up to a depth of 4 cm, with soil P concentrations unaffected at depths > 4 cm. In general, REEs had little effect on the vertical leaching of P in packed soil columns.
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U2 - 10.1016/S1002-0160(10)60051-3
DO - 10.1016/S1002-0160(10)60051-3
M3 - Article
AN - SCOPUS:77956252756
SN - 1002-0160
VL - 20
SP - 616
EP - 622
JO - Pedosphere
JF - Pedosphere
IS - 5
ER -