RT Journal Article T1 Spatial and evolutionary aspects of nucleationin diffusing-reacting systems A1 Prieto Rubio, Manuel A1 Fernández Díaz, María Lourdes A1 López De Andrés, María Sol AB Nucleation behaviour in diffusing-reacting systems involves spatial phenomena that are explainable by means of spatial considerations. Particularly, precipitate locations may be justified from the profiles of different physico-chemical parameters at the nucleation time. However, this instantaneous observation is not enough to explain other aspects (nucleation density, metastability level, etc.) that are in relation with the system evolution. Evolutionary variables must be introduced to account for experiments in systems of this kind. In this paper a parameter, the supersaturation rate, is quantified from experimental data of supersaturation evolution. The study is applied to growth of barium and strontium carbonates in a U-tube gel system. Supersaturation rates have an important bearing on the supersaturation level at the nucleation time and consequently on the nucleation density. PB Elsevier Science B.V. SN 0022-0248 YR 1991 FD 1991 LK https://hdl.handle.net/20.500.14352/56787 UL https://hdl.handle.net/20.500.14352/56787 LA eng DS Docta Complutense RD 3 abr 2025