Institute of Analytical Sciences 1 article published in JoVE Environment Extraction and Characterization of Surfactants from Atmospheric Aerosols Barbara Nozière*1, Violaine Gérard*1, Christine Baduel2, Corinne Ferronato1 1CNRS, Université Claude Bernard Lyon 1, IRCELYON, F-69626, 2CNRS, ENS de Lyon, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR 5280 Methods are presented for the targeted extraction of surfactants present in atmospheric aerosols and the determination of their absolute concentrations and surface tension curves in water, including their Critical Micelle Concentration (CMC).