Table 1.
The calculated and observed m/z of each of the labeled ions observed in the spectra shown in Fig. 1
| Spectra | Compound | Formula | Calculated [M + H]+ | Observed [M + H]+ intact fly | Observed [M + H]+ forceps only |
|---|---|---|---|---|---|
| 1 | Octadecadiene | C18H34 | 251.2739 | 251.2755 | 251.2748 |
| 2 | Docasadiene | C22H44 | 307.3365 | 307.3377 | 307.3356 |
| 3 | Tricosadiene | C23H44 | 321.3513 | 321.3491 | 321.3517 |
| 4 | Tricosene | C23H46 | 323.3678 | 323.3689 | 323.3714 |
| 5 | Pentacosadiene | C25H48 | 349.3834 | 349.3848 | 349.3827 |
| 6 | Pentacosene | C25H50 | 351.3991 | 351.3945 | 351.3968 |
| 7 | Heptacosadene | C27H52 | 377.4147 | 377.4098 | 377.4176 |
| 8 | Heptacosene | C27H54 | 379.4304 | (379.4170)* | 379.4306 |
| 9 | Nonacosadiene | C29H56 | 405.4460 | 405.4447 | 405.4476 |
| 10 | Nonacosene | C29H58 | 407.4608 | 407.4604 | 407.4511 |
*Inconsistent mass measurements for heptacosene and (not any of the other compounds) are likely to indicate the presence of an unresolved chemical interference in some of the spectra.