Fig. 4.

Comparison of both bulk and aerosois mass spectra within three distinct mass windows. (A) Representative increase in peak intensity of mass 253.2172, assigned to [C₁₆H₂₉O₂]⁻, relative to other signals in nominal mass 253. (B) Representative increase in peak intensity of mass 227.2016, assigned to [C₁₄H₂₇O₂]⁻, relative to other signals in nominal mass 227. (C) Representative increase in peak intensity of masses 225.1496 and 225.1860, assigned respectively to [C₁₃H₂₁O₃]⁻ and [C₁₄H₂₅O₂]⁻, relative to other signals in nominal mass 225.