I hold a Ph.D. in Environmental Sciencesfrom the New University of Lisbon. In September 2017 I’ve completed my Habilitation in Chemistry at Instituto Superior Técnico, University of Lisbon. My career has been mainly focused on the fate and biogeochemistry of mercury in the environment, although I have also developed a substantial research program in the related field of trace-element biogeochemistry. In addition to working on multidisciplinary projects in Portugal, in many cases as the principal investigator (PI) (e.g. PROFLUX, PERMAMERC), I have collaborated on several international projects (e.g. CiCAT, NUNATARYUK), through which I have developed an interest and research expertise in Polar Regions. I was an invited scientist in two International Polar Year (IPY) Projects in the Canadian Arctic (2008-2009), and in 2011 I was PI on a project based in Antarctica (CONTANTARC-1). Since 2011 have returned annually to Arctic or Antarctica, most of the time with MSc and PhD students. Due to my interest in biogeochemistry of permafrost and my expertise in contaminant and sulphur biogeochemistry, I have also been invited to join the Canadian ADAPT project (Arctic Development and Adaptation to Permafrost in Transition) and the EU H2020 NUNATARYUK. Since 2009 I’ve been teaching by invitation at Instituto Superior Técnico. I have extensive experience supervising student research including 6 undergraduate students (one in progress), 25 M.Sc. students (four in progress), 8 Ph.D. students (four in progress) and three postdoctoral researchers. Also, visiting researchers have worked in my laboratory for collaborative research mainly on the scope of mercury biogeochemistry in coastal environments and wetlands. For three consecutive years (2018 to 2021) I was award with the “Excellence in Teaching” by Instituto Superior Técnico as a result of students teaching evaluation (QUCs). I have published 85 papers in international journals with referees, and two book chapters. Among this 85 already published or accepted, 18 were published as first author (ca. 21%) and 33 as second or senior (last) author (ca. 39%). I have been cited more than 2240 times (3160 in Google Scholar) and my h-index varies from 25 (ISI Web of Knowledge – Thompson Reuters) to and 32 (Google Scholar). In 2010, the journal Marine Pollution Bulletin recognized me with a “Highly Cited Author Award” for 2005-2009. It should be notice that more than 58% of my citations were in the last 5 years. In 2011 I was nominated as the Portuguese representative in the Global Mercury Partnership of the United Nations Environment Programme (UNEP) and since 2013, I have been an executive member of the coordination committee of Portuguese Polar Program (PROPOLAR). Also, in 2013 I was invited the Polar Office of Fundação para a Ciência e Tecnologia to prepare the admission of Portugal to the International Arctic Science Committee (IASC). In April 2015 in Toyama, Japan, Portugal was accepted as the 23rd IASC member country. After acceptance, I was nominated by the Ministry of Science and Education, National Delegate at the IASC Council and at the Terrestrial Working Group (TWG) and in April 2017 I was nominated chair of the Pan-Arctic Program T-MOSAiC (www.t-mosaic.com). Due to my expertise in contaminant cycle in the Arctic, I was appointed their representative at the Arctic Monitoring and Assessment Program (AMAP) and and as a member of the advisor panel of the Sustainable Arctic Observing Networks (SAON) ROADS program. In January 2022 I was appointed by SAON as co-chair of the Committee of Observation Networks (CON). Since September 2014 I have been an external researcher at the Centre D’études Nordiques at University Laval, Canada and since January 2017 I was appointed as Adjunct Graduate Faculty Member at Trent University, also in Canada. In September 2022 I was also appointed as Adjunct Professor (Professeur Associé) of the Department of Chemistry, Université Laval, Canada..