Dr Maja Poznanović Spahić earned a Master's and a PhD from the Department of Analytical Chemistry and the Department of Applied and Environmental Chemistry at the Chemical Faculty of the University of Belgrade, Serbia. Her work focused on developing methods to distinguish the sources of pollution involving toxic elements and to assess their environmental impacts. She currently serves as Head of the Chemical Laboratory at the Geological Survey of Serbia (Belgrade, Serbia). Her professional background is firmly rooted in applied geochemistry, with extensive experience in the geochemical characterisation of minerals, rocks, soils, and waters, as well as in laboratory-based analytical work supporting geological and mineral exploration projects. In her role, she has been actively involved in national and international research projects, collaborating closely with multidisciplinary teams of geologists and geochemists. Her work spans applied mineral chemistry and ore deposit geochemistry, focusing on interpreting major- and trace-element data from rocks, soils, and waters relevant to ore-forming processes and mineralised systems. Additionally, her work examines contamination by naturally occurring toxic trace elements (e.g., from magmatic/volcanic rocks and ore-bearing/mining areas) in the environment (such as water and soils). She regularly contributes geochemical input to studies of metallic and non-metallic deposits, linking laboratory-based analytical results to geological and g