Table 3. Top fiber combinations.
| Optimal SPME Fiber or Fiber Combinationa | GC-MS(Identities)b | GC-MS(Retention Time) | GC-FID(Retention Time) |
| single fiber | 50/30 µm CAR-DVB-PDMS (63) | 65 µm DVB-PDMS (46) | 50/30 µm CAR-DVB-PDMS (71) |
| two fiber combination | 50/30 µm CAR-DVB-PDMS75 µm CAR-PDMS (78) | 65 µm DVB-PDMS85 µm CAR-PDMS (63) | 50/30 µm CAR-DVB-PDMS85 µm CAR-PDMS (80) |
| three fiber combination | 50/30 µm CAR-DVB-PDMS75 µm CAR-PDMS85 µm PA (89) | 65 µm DVB-PDMS85 µm CAR-PDMS7 µm PDMS (75) | 50/30 µm CAR-DVB-PDMS85 µm CAR-PDMS65 µm DVB-PDMS (86) |
| four fiber combination | 50/30 µm CAR-DVB-PDMS75 µm CAR-PDMS85 µm PA100 µm PDMS (93) | 65 µm DVB-PDMS85 µm CAR-PDMS7 µm PDMS60 µm PEG (82) | 50/30 µm CAR-DVB-PDMS85 µm CAR-PDMS65 µm DVB-PDMS7 µm PDMS (91) |
| five fiber combination | 50/30 µm CAR-DVB-PDMS75 µm CAR-PDMS85 µm PA100 µm PDMS65 µm DVB-PDMS (96) | 65 µm DVB-PDMS85 µm CAR-PDMS7 µm PDMS60 µm PEG50/30 µm CAR-DVB-PDMS (88) | 50/30 µm CAR-DVB-PDMS85 µm CAR-PDMS65 µm DVB-PDMS7 µm PDMS60 µm PEG (94) |
| six fiber combination | 50/30 µm CAR-DVB-PDMS75 µm CAR-PDMS85 µm PA100 µm PDMS65 µm DVB-PDMS60 µm PEG (99) | 65 µm DVB-PDMS85 µm CAR-PDMS7 µm PDMS60 µm PEG50/30 µm CAR-DVB-PDMS75 µm CAR-PDMS (93) | 50/30 µm CAR-DVB-PDMS85 µm CAR-PDMS65 µm DVB-PDMS7 µm PDMS60 µm PEG75 µm CAR-PDMS (97) |
| seven fiber combination | 50/30 µm CAR-DVB-PDMS75 µm CAR-PDMS85 µm PA100 µm PDMS65 µm DVB-PDMS60 µm PEG85 µm CAR-PDMS (100) | 65 µm DVB-PDMS85 µm CAR-PDMS7 µm PDMS60 µm PEG50/30 µm CAR-DVB-PDMS75 µm CAR-PDMS100 µm PDMS (97) | 50/30 µm CAR-DVB-PDMS85 µm CAR-PDMS65 µm DVB-PDMS7 µm PDMS60 µm PEG75 µm CAR-PDMS85 µm PA (99) |
| eight fiber combination | all tested fibers (100) | all tested fibers (100) | all tested fibers (100) |
a
based on maximal coverage of the total metabolites identified.
b
bracketed values are the percentage of total metabolites obtained using all eight fibers.