Table 2. Intensities and Ratios of Detected and Identified Lipids in a Mouse Brain Tissue Section Acquired with the MALDI FT-ICR MS (solariX XR 9.4T) Instrument for 10 and 100 Laser Shots.
| 10 shots |
100
shots |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| target m/z | identification | intensity (c.p.s) | mass accuracy (ppm) | ratio m/z 772.53 over m/z target | ratio m/z 798.54 over m/z target | intensity (c.p.s) | mass accuracy (ppm) | ratio m/z 772.53 over m/z target | ratio m/z 798.54 over m/z target |
| 770.50975 | [PA 36:2+K]+ | 4.8 × 105 | –0.09 | 10.6 | 11.3 | 1.3 × 106 | –0.12 | 33.1 | 40.0 |
| 848.55643 | [PC 38:4+K]+ | 8.9 × 105 | –0.25 | 5.73 | 6.07 | 6.5 × 106 | –0.24 | 6.61 | 8.00 |
| 772.52519 | [PC 32:0+K]+ | 5.1 × 106 | –0.13 | 1.06 | 4.3 × 107 | –0.17 | 1.21 | ||
| 798.54079 | [PC 34:1+K]+ | 5.4 × 106 | –0.26 | 0.94 | 5.2 × 107 | –0.26 | 0.83 | ||