On Thursday 22nd September 2022, Magdaléna Peřestá (née Knappová) successfully defended her PhD thesis entitled “Speciation of arsenic under reducing conditions of organic-rich soil“, supervised by Dr. Petr Drahota. On the photo you will see Magdaléna with her supervisor and both reviewers, Prof. Edgar Hiller (Comenius University, Bratislava) and Dr. Barbora Doušová (University of Chemistry and Technology Prague). Congratulations!