2026-09-10T07:35:42Zhttps://gredos.usal.es/oai/request

oai:gredos.usal.es:10366/1692852026-01-27T01:01:56Zcom_10366_4182com_10366_4055com_10366_3946com_10366_3823col_10366_4183

Sanjuan-Navarro, Lorenzo Cortés-Bautista, Sergio Vital, Melanie Von der Kammer, Frank 2026-01-26T10:39:12Z 2026-01-26T10:39:12Z 2025-11-14 Lorenzo Sanjuan-Navarro, Sergio Cortés-Bautista, Melanie Vital, Frank von der Kammer, Dissolution and transformation of silver nanoparticles in flow systems: Sulfidation and effect of flow rate, Science of The Total Environment, Volume 1006, 2025, 180939, ISSN 0048-9697, https://doi.org/10.1016/j.scitotenv.2025.180939. (https://www.sciencedirect.com/science/article/pii/S0048969725025793) 0048-9697 http://hdl.handle.net/10366/169285 10.1016/j.scitotenv.2025.180939 [EN]The release of engineered nanoparticles (ENPs) into the environment is an emerging concern with significant implications for organism exposure due to the possible toxicity caused by these materials. Understanding the dissolution and transformation of silver nanoparticles (AgNPs) under dynamic flow conditions is critical, as these processes directly govern the mobility, persistence, and bioavailability of this material in natural aquatic systems, ultimately influencing its ecological risk and environmental impact. In this work, a methodology based on continuous- flow systems to assess the dissolution and transformation behavior of nanomaterials (NMs) under environmentally relevant conditions has been applied specifically to AgNPs. In this way, AgNPs nanopowder has been analyzed employing different environmental conditions (presence of oxygen, background electrolyte, types of buffers and NOM,). Results confirmed the expected dependency of AgNPs dissolution on the oxygen availability, corroborating previous batch assays. The evaluation of the AgNPs sulfidation in oxic and anoxic regimes were applied under different flow rates. AgNPs sulfidation is a complex process that takes place in two steps, oxidation followed by the AgS formation. Two different sulfide compounds eng http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Atribución 4.0 Internacional Engineered nanoparticles Dissolution Sulfidation Continuous-flow methodology Silver nanoparticles Dissolution and transformation of silver nanoparticles in flow systems: Sulfidation and effect of flow rate info:eu-repo/semantics/article