Gas Chromatography and Lipids - Chapter 7
Table 7.1 - Part 1 |
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Relative abundancesa of the molecular ion and of ions characteristic of the picolinyl moiety, and m/z valuesb and relative abundances of ions characteristic of double bond positions in mass spectra of picolinyl octadecenoates [172]. |
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| Double bond position |
m/z = 92 | m/z = 108 | m/z = 151 | m/z = 164 | M | M-1 |
|---|---|---|---|---|---|---|
| 2 | 79 | 100 | 27 | 4 | 26 | 8 |
| 3 | 100 (93) | 43 | 19 | 10 | 31 | 4 |
| 4 | 84 (93) | 53 | 100 | 3 | 30 | 3 |
| 5 | 100 (93) | 43 | 8 | 21 | 31 | 2 |
| 6 | 100 (93) | 54 | 22 | 19 | 29 | 3 |
| 7 | 100 | 70 | 16 | 52 | 52 | 8 |
| 8 | 100 | 73 | 20 | 67 | 48 | 11 |
| 9 | 100 | 75 | 22 | 61 | 37 | 7 |
| 10 | 100 | 75 | 30 | 41 | 46 | 10 |
| 11 | 100 | 72 | 36 | 46 | 43 | 9 |
| 12 | 100 | 72 | 28 | 47 | 53 | 10 |
| 13 | 100 | 67 | 28 | 50 | 50 | 10 |
| 14 | 100 | 76 | 29 | 42 | 54 | 12 |
| 15 | 100 | 88 | 38 | 59 | 54 | 12 |
| 16 | 100 | 90 | 35 | 58 | 50 | 17 |
| 17 | 100 | 74 | 29 | 44 | 35 | 20 |
| a Expressed as a percentage of the base ion | ||||||
| b In parentheses | ||||||
Table 7.1 - Part 2 |
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| Double bond position |
Doublet | Gap of 26 amu | Gap of 40 amu E (to C)c |
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|---|---|---|---|---|---|
| Ac | Bc | Cc | Dc | ||
| 2 | 45 (190) | 40 (177) | |||
| 3 | 15 (204) | 8 (190) | |||
| 4 | 9 (218) | 2 (204) | |||
| 5 | 21 (232) | 4 (218) | 3 (204) | 1 (178) | 21 (164) |
| 6 | 32 (246) | 5 (232) | 7 (218) | 1 (192) | 4 (178) |
| 7 | 43 (260) | 17 (246) | 4 (232) | 8 (206) | 5 (192) |
| 8 | 37 (274) | 28 (260) | 5 (246) | 10 (220) | 7 (206) |
| 9 | 35 (288) | 30 (274) | 10 (260) | 4 (234) | 10 (220) |
| 10 | 37 (302) | 39 (288) | 9 (274) | 2 (248) | 8 (234) |
| 11 | 32 (316) | 43 (302) | 10 (288) | 4 (262) | 7 (248) |
| 12 | 41 (330) | 49 (316) | 13 (302) | 4 (276) | 12 (262) |
| 13 | 33 (344) | 48 (330) | 13 (316) | 2 (290) | 11 (276) |
| 14 | 10 (358) | 52 (344) | 12 (330) | 3 (304) | 15 (290) |
| 15 | 12 (372) | 14 (358) | 18 (344) | 3 (318) | 17 (304) |
| 16 | 17 (372) | 5 (358) | 5 (332) | 28 (318) | |
| 17 | 20 (372) | 1 (346) | 37 (332) | ||
| c Points of cleavage of ions A to E can be seen by reference to Figure 7.5a immediately above | |||||
This document is part of the book "Gas Chromatography and Lipids" by William W. Christie and published by the Oily Press, Bridgwater in 1989.
Updated: 5/8/2006 |
Scottish Crop Research Institute (and MRS Lipid Analysis Unit), Invergowrie, Dundee (DD2 5DA), Scotland |
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