Figure 4:

Calculated collisional cross section of product diglyceride-like ions derived following the collisional activation of triacylglycerol molecular species [M+ NH₄]⁺ present in an extract of human serum. Ion mobility was measured in a traveling wave sector of a quadrupole time-offlight mass spectrometer. Collisional cross section ion mobility (Ų)was linearly related to massto-charge ratio (m/z) of the diglyceride-like ion and total number of double bonds (n = 0 to 4) in the fatty acyl groups. With permission, American Chemical Society, from JA Hankin et al., 2016 (17).