Chemical speciation of phosphorus in farmland soils and soil aggregates around mining areas
Geoderma(2023)
摘要
•Fe/Al-P dominated in acidic soils, while some Ca-P occurred in alkaline soils.•Available P, total P, and their ratio increased substantially in the soil colloids.•Fe-P increased while Ca-P decreased in the colloids compared with macroaggregates.•HMs seemed no significant effects on P speciation in the polluted farmland soils.•Al fractions played important roles in P immobilization by pedogenic Fe/Al oxides.
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关键词
Farmland soils, P speciation, Fe, Al fractions, Chemical extraction, Correlation analysis, P K-edge XANES
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