13C NMR Estimates of Carbon Distribution in IHSS Samples
| Sample | Cat. No. | Carbonyl | Carboxyl | Aromatic | Acetal | Heteroaliphatic | Aliphatic |
|---|---|---|---|---|---|---|---|
| 220-190 ppm | 190-165 ppm | 165-110 ppm | 110-90 ppm | 90-60 ppm | 60-0 ppm | ||
| Reference: K. A. Thorn, D. W. Folan, and P. MacCarthy (1989), Characterization of the International Humic Substances Society Standard and Reference Fulvic and Humic Acids by Solution State Carbon-13 (13C) and Hydrogen-1 (1H) Nuclear Magnetic Resonance Spectrometry, U.S. Geological Survey, Water-Resources Investigations Report 89-4196, Denver, CO, 93 pp. # The peak areas from which these percentages are calculated were obtained from solid-state CPMAS 13C NMR spectra whch were measured by Dr. Patrick Hatcher at Department of Chemistry, Ohio State University. |
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| This table contains the electronically integrated peak area percentages for selected ranges of chemical shift. | |||||||
| An * means that a sample is no longer available, and nd means that an item was not determined. | |||||||
| Standard HA | |||||||
| Suwannee River I * | 1S101H | 8 | 19 | 37 | 9 | 7 | 21 |
| Suwannee River II # | 2S101H | 6 | 15 | 31 | 7 | 13 | 29 |
| Elliott Soil | 1S102H | 6 | 18 | 50 | 4 | 6 | 16 |
| Pahokee Peat | 1S103H | 5 | 20 | 47 | 4 | 5 | 19 |
| Leonardite | 1S104H | 8 | 15 | 58 | 4 | 1 | 14 |
| Standard FA | |||||||
| Suwannee River I | 1S101F | 7 | 20 | 24 | 5 | 11 | 33 |
| Suwannee River II # | 2S101F | 5 | 17 | 22 | 6 | 16 | 35 |
| Elliott Soil I * | 1S102F | 12 | 25 | 30 | 1 | 9 | 22 |
| Elliott Soil II | 2S102F | nd | nd | nd | nd | nd | nd |
| Pahokee Peat I * | 1S103F | 7 | 28 | 34 | 3 | 9 | 20 |
| Pahokee Peat II | 2S103F | nd | nd | nd | nd | nd | nd |
| Reference HA | |||||||
| Suwannee River * | 1R101H | nd | nd | nd | nd | nd | nd |
| Pahokee Peat | 1R103H | nd | nd | nd | nd | nd | nd |
| Nordic Lake | 1R105H | 10 | 19 | 38 | 7 | 11 | 15 |
| Summit Hill Soil | 1R106H | 7 | 19 | 30 | 4 | 14 | 25 |
| Waskish Peat | 1R107H | 8 | 18 | 42 | 6 | 8 | 18 |
| Reference FA | |||||||
| Suwannee River | 1R101F | nd | nd | nd | nd | nd | nd |
| Pahokee Peat * | 1R103F | nd | nd | nd | nd | nd | nd |
| Nordic Lake | 1R105F | 10 | 24 | 31 | 7 | 12 | 18 |
| Waskish Peat | 1R107F | 7 | 19 | 36 | 6 | 12 | 20 |
| Pony Lake | 1R109F | 1.2 | 17 | 12 | 0.2 | 8.4 | 61 |
| Aquatic NOM | |||||||
| Suwannee River | 1R101N | 8 | 20 | 23 | 7 | 15 | 27 |
| Nordic Lake | 1R108N | 8 | 21 | 19 | 5 | 16 | 31 |
| Bulk Materials | |||||||
| Elliott Soil | BS102M | nd | nd | nd | nd | nd | nd |
| Pahokee Peat | BS103P | nd | nd | nd | nd | nd | nd |
| Leonardite | BS104L | nd | nd | nd | nd | nd | nd |