Fig. 3.
EICs of m/z 215.023 (C5H11O7S−) and 333.086 (C10H21O10S−) corresponding to methyltetrol sulfate monomers and dimers, respectively, from (a) laboratory-generated β-IEPOX SOA diluted by a factor of 200; and (b) laboratory-generated δ-IEPOX SOA. No significant peaks were observed beyond 20 min.