Long Lifetime of Ambient Isoprene Epoxydiols-Derived Secondary Organic Aerosol (IEPOX-SOA) against OH Oxidation and Evaporation. WEIWEI HU, Brett Palm, Douglas Day, Pedro Campuzano-Jost, Jordan Krechmer, Zhe Peng, Suzane de Sá, Scot Martin, Lizabeth Alexander, Karsten Baumann, Lina Hacker, Astrid Kiendler-Scharr, Abigail Koss, Joost de Gouw, Allen H. Goldstein, Roger Seco, Steve Sjostedt, Jeong-Hoo Park, Alex Guenther, Saewung Kim, Francesco Canonaco, Andre Prévôt, William Brune, Jose-Luis Jimenez, CIRES, University of Colorado, Boulder