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Lelde Krumina

Doctoral Student

Since early history nanoparticles have been present in Earth´s systems as a result of weathering and precipitation processes. Thus, life has evolved on Earth in presence of nanomaterials, and consequently we are already aware of some of their broader implications for living organisms and ecosystems. Today the importance of environmental nanoparticles is unquestionable and highly recognized. A challenge in geochemical research is to understand the roles of these smallest of particles for distribution and bioavailability of elements, mineral growth and dissolution, and in catalysis and reaction pathways.

In my PhD project I will study the reactivity of iron (oxyhydr)oxide nanoparticles focusing on: 1) adsorption and desorption reactions at water – nanoparticle interfaces; 2) dissolution and redox reactions involving nanoparticles.

The expected outcome of this project is molecular-scale information that will enhance the fundamental knowledge about the influence of iron (oxyhydr)oxide nanoparticles in geochemical processes that control the stability of organic matter, the stability and dissolution of the nanoparticles, and the availability of phosphates.

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