Mechanisms Governing the Stability of Fe-As Complexes: Roles of Environmental and Material Intrinsic Factors.

ABSTRACT: Arsenic (As) contamination threatens ecosystems and human health, and iron (hydr)oxides-mediated formation of Fe-As composites is a key strategy for arsenic immobilization, while the long-term stability of these composites under complex environmental conditions remains a critical concern. This study systematically investigated the interactive effects of environmental factors (temperature: 5-35 °C, pH: 4-8, competing ions: phosphate and citrate) and material intrinsic properties (ferrihydrite aging: 0-60 days, Fe/As molar ratio: 1.875 and 5.66, adsorption time) on Fe-As composite stability using multiscale characterization techniques and theoretical modeling. Results showed that temperature was the dominant controlling factor, with arsenic release increasing by 4.25% per 1 °C rise (178% hig

SUBMITTER: Yang Z 

PROVIDER: S-EPMC12846290 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature