Shift |
Assignment | ||
| NO3- = 0 ppm | NH4+= 0 ppm | ||
| 30 to 0 ppm | 410 to 380 ppm | Ø-N=O | Nitroso- |
| 25 to -25 ppm | 405 to 355 ppm | NO3- or NO2- | Nitrate or Nitrite |
| -20 ppm | 360 ppm | CH3NO2 | Nitromethane (solution NMR) |
| -10 to -30 ppm | 350 to 330 ppm | - | Oxime(s) |
| -25 to -90 ppm | 355 to 290 ppm |   |
Hydroxyimine, Phenazine |
  |
Pyridine (-80 ppm) , Nitrile (Knicker) | ||
| -90 to -150 ppm | 290 to 240 ppm |  |
N7 of Purines |
| -120 to -140 ppm | 260 to 240 ppm |  |
Pyroxime(s) |
| -150 to -180 ppm | 230 to 200 ppm | |
Nitrile (Steelink) |
| -220 to -270 ppm | 160 to 110 ppm |  -O=C-NH-OH |
Pyrrole, Carbamate |
| >N-C=O- | Amide(s), Lactam(s) | ||
| -230 to -240 ppm | 150 to 140 ppm | -NH-CO-CH3 | Chitin Structures, N-Acetyls |
| -247 ppm | -- | >N-C=O- | main amide peak in composts (Knicker) |
| -240 to -260 ppm | 140 to 120 ppm | -- | Maillard products, Melanoidins |
| -280 to -300 ppm | 100 to 80 ppm | NH2-C(=NH)-NHR +NH3OH |
Guanidine(s), Hydroxylammonium |
| Ca. -320 ppm | 60 ppm |  |
Aniline(s) |
| -300 to -325 ppm | 80 to 50 ppm | NRH NR2 | Amines |
| -325 to -350 ppm | 45 to 10 ppm | NH2-CH2- | terminal Amines eg. Lysine |
| -370 ppm | 10 ppm | +NH3CH2COO- | Glycine |
| -350 to -380 | 30 to 0 ppm | +NH4 | Ammonium, Ammines |
| -400 ppm | -20 ppm | NH3 | Ammonia (liquid) |
| -390 to -410 ppm | -10 to -30 ppm | NH2OH | Hydroxamine(s) |
| Ca. - 200 ppm | Ca. 200 ppm | breakthrough | The transmitter is pulsed in the 15N frequency at about 200 ppm, and imperfect filtering may result in breakthru pulses most obvious here. |
H.Knicker, G.Alemandros, F.J.Gonzales-Vila,
F.Martin and H-D.Lü
Soil Biol. Biochem., 28, p1053, 1996.
C. Steelink
Humic Substances in the Global Environment, p405, 1994
Benzing-Purdie Et Al.
J. Soil Sci., 43, p113, 1992.
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