Dr. David Galán is a scientific researcher (from 2004 up to nowadays) in the Department of Atmospheric Pollution (National Reference Laboratory for Air Quality in Spain) of the National Center for Environmental Health (Health Institute Carlos III). He is the head of functional unit in that Department and holds a PhD in Inorganic and Bioinorganic Chemistry by Complutense University of Madrid (Mention of European Doctorate). Similarly, Dr. Galán is an expert in instrumental techniques by Faculty of Chemical Sciences (Complutense University of Madrid) and holds a Master in Computer Science and Management as well as 31 specific courses. Dr. Galán has published more than 190 scientific-technical reports as well as more than 40 oral communications in international congresses. Dr. Galán has been served as a member of Directive Board of a Scientific Society such Spanish Society for Environment Health (2013-2017), member of Scientific and Management Committees in Scientific Congresses (>50 events from 2020), Editorial Board Member for Annals of Civil and Environment Engineering, Journal of Epidemiology and Global Health Research and Environmental Science: Research and Reviews, technical assistant for the Expert Committee for air quality assessment during a large fire at a used tire landfill, as well as a member of board of national competitive exams in the field of research for Research Public Organizations on numerous occasions (2006-2019). Nowadays, he acts as a National Secretary of the Normalization Technical Committee SC2: Air, belonging to Spanish Association of Normalization. he is a Technical-Scientific Committee member for RELAB (Network of Biological Alert Laboratories). In teaching, Dr. Galán has been part of the Teachers Board in courses and masters of environmental techniques and air pollution. In researching, Dr. Galán has published > 45 publications indexed in Scopus, 8 chapters of books, and he has been main research of 3 research projects and was included in the research team of numerous international research projects and contracts with the Public Administration. Dr. Galán has been responsible for the validation process and subsequent accreditation by ENAC (National Accreditation Entity for Spain) of more than 50 parameters.