Claim · model-written summary
Aluminum substitution in goethite increased the affinity of the surface for B adsorption.
- Treatment
- Aluminum substitution in goethitee1
- Outcome
- affinity of the surface for B adsorptione1
- Direction
- increasede1
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
e1“Aluminum substitution in goethite increased the affinity of the surface for B adsorption”
Title
Boron chemistry in selected Virginia soils and hydroxy aluminum and iron systems
Jin, Ji-yun VTechWorks (Virginia Tech) 1985
Other claims from this paper (16)
- Observation Total B in the 14 soils ranged from 21.5 to 96.3 mg/kg.
- Observation Only a small portion of the total soil B was in soil solution, in non-specifically and specifically adsorbed forms, and in Mn minerals.
- Observation A large part of the total soil B was associated with non-crystalline and crystalline Al and Fe minerals and soil silicates.
- Observation The B bound to Al and Fe minerals and soil silicates contributes little to plant B absorption.
- Association Hot water soluble B, NH4-acetate extractable B and mannitol exchangeable B from the soils closely correlated with B concentrations in corn plants grown on native B in the greenhouse experiment.
- Association Mehlich III extractable B from the soils closely correlated with B concentrations in corn plants grown on native B in the greenhouse experiment.
- Association Tissue B concentration from applied B closely correlated with soil clay, hydroxylamine-extractable Mn and Al and Fe extractable by NH4-oxalate.
- Association Maximum B adsorption by the soils closely correlated with soil clay, hydroxylamine-extractable Mn and Al and Fe extractable by NH4-oxalate.
- Intervention effect A yield response of corn plants to B application did not occur on the soils.
- Observation At pH 6.5, B was adsorbed on the negatively charged surface of gibbsite and the positively charged surface of goethite.
- Observation At pH 10, B was adsorbed on negatively charged surfaces of both gibbsite and goethite.
- Intervention effect Boron adsorption was greater at pH 10 than at pH 6.5.
- Intervention effect An increase in temperature increased B adsorption on both minerals at both pH levels.
- Mechanism B adsorption on the minerals is an exothermic process.
- Intervention effect Boron adsorption on gibbsite and goethite shifted the zero point of charge (ZPC) of the minerals downward.
- Mechanism Specific B adsorption occurred on the mineral surfaces (author interpretation of the ZPC shift).