Summary
This laboratory study constrains the kinetics and equilibrium silicon isotope fractionation between dissolved silica and amorphous silica phases under controlled conditions. The findings establish isotopic fractionation factors that may improve interpretation of silicon cycling in natural systems, including soils and weathering environments. As suggested by the title and journal scope, the work provides geochemical reference data rather than direct agronomic or nutritional outcomes.
UK applicability
The isotopic fractionation data may be applicable to UK soil science and geological studies investigating silicon mobility and weathering processes, though direct application to agricultural practice or policy remains indirect and would require integration with field-based soil research.
Key measures
Silicon isotope fractionation factors (Δ30Si); exchange reaction kinetics and rate constants between aqueous and amorphous Si phases at room temperature
Outcomes reported
The study experimentally quantified silicon isotope exchange kinetics and fractionation factors between aqueous dissolved silica and amorphous silicon dioxide phases at room temperature. Results provide calibrated isotope fractionation parameters relevant to understanding silicon cycling in geochemical and potentially pedogenic systems.
Topic tags
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