Balla Dimitra MSc, PhD student is a chemist (Aristotle University of Thessaloniki, 2013) with a master degree on “Chemical Analysis – Quality Control” (National and Kapodistrian University of Athens, 2016). She is currently conducting her PhD at the Atmospheric Chemistry and Innovative Technologies Laboratory (AirTech-Lab) at NCSR “Demokritos” in collaboration with Environmental Pollution Control Laboratory of Aristotle University of Thessaloniki, Greece. The objective of her PhD is the ‘‘Study of Chlorinated Alkanes in the Atmosphere’’. She is working as a research fellow at the Laboratory of Atmospheric Chemistry and Innovative Technologies of the NCSR "Demokritos" in Athens (October 2018-present). She has long experience in atmospheric quality measurements, in analytical techniques for the determination of POPs and other pollutants, in the good handling of analytical instruments (GC-MS, GC-ECD, IC, MAE, TOC, UV-Vis spectrophotometer, fluorometer) as well as in the statistical processing of results. She has been involved in the European research program THALES. She is author of 9 publications in peer-reviewed journals, and 10 conference proceedings and scientific reports.