Table 3.

Variations in terms of ppbV for mass peaks associated with the major ester fragments related to fragmentations involving the mass peak m/z 89.060, m/z 103.075 and m/z 117.093. Variations were calculated for C, A16, A17, and A18 comparing the concentration detected at cycle 20 with the concentration reported at cycle 24. These mass peaks are the more representative fragments for fragmentations involving the mass peaks m/z 89.060, m/z 103.075, and m/z 117.093, in accordance with fragmentation patterns describe in quality and quantity by Aprea et al. [32]

m/z	C (ppbV)	A16 (ppbV)	A17 (ppbV)	A18 (ppbV)
39.022	184.6	216.0	209.1	78.8
41.038	98.8	109.3	113.8	66.4
43.956	0.4	0.2	0.6	0.9
57.070	340.6	213.9	58.8	417.9
61.028	30.1	190.3	334.1	49.2
71.085	255.5	123.5	344.1	319.4
89.059	264.7	117.4	635.8	908.1
103.075	0.8	1.4	2.1	2.4
117.093	1.6	1.6	5.2	5.1