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Pentafluorobenzyl ester ions of n-3 PUFAs monitored by negative chemical ionization GC-MS
| Ion-monitored [M-PFB]− |
||
|---|---|---|
| n-3 PUFA | Unlabeled | 13C-labeled |
| m/z | ||
| α-LNA (18:3 n-3) | 277 | 295 |
| EPA (20:5 n-3) | 301 | 321 |
| DPA (22:5 n-3) | 329 | 347 |
| DHA (22:6 n-3) | 327 | 345 |
α-LNA, α-linolenic acid; EPA, eicosapentaenoic acid; DPA, docosapentaenoic acid; DHA, docosahexaenoic acid; [M-PFB]−, M-pentafluorobenzyl ion. The ion monitored is the fragment resulting from neutral loss of PFB from the ester.
