Alessandra Messina is a research fellow with the research program "Metals in the environment and interaction with human health" (MED/42) at the Department of Biomedicine and Prevention, University of Rome Tor Vergata. She graduated in 2002 in Environmental Sciences (110/100 cum laude) at the Tuscia University of Viterbo. In 2014 she obtained the Master's Degree in "Industrial Hygiene" at the Catholic University of the Sacred Heart, Rome with a thesis entitled "Study of exposure to metals in welding activities evaluated under different operating conditions.". From 2002 to 2014 she worked as a Environmental chemical laboratory technician and Industrial Hygienist at the Institute of Occupational Medicine, Catholic University of the Sacred Heart, Rome (dealing with monitoring, analysis of industrial pollutants and study of exposure to micro-pollutants). Here it was also Tutor for the Bachelor’s Degree Course in "Techniques of Prevention in the Environment and in the Workplaces". In the same Degree course she taught "Ecology (with basics of environmental impact assessment)" in the course of Environmental Sciences (academic year 2009-2010). Her research is focused on the study of chemical pollutants in environmental and biological media.