We know about different forms of Nitrogen in soil. What do you think we can calculated some forms of N in total N ? Kind regards
I see. Perhaps someone might have a certain results of research. Nevertheless, thank you very much
I don't understand your question but want to give one suggestion.
If you want to estimate total nitrogen, compounds and their isotopic form, try to use mass spectroscopy and do analysis according to Nitrogen rule.
In mass spectroscopy, chemical species are ionized and ions are sorted according to ratio of mass to charge.
Nitrogen rule states that a compound of even numbered molecular mass must have either no or even number of nitrogen atoms (N) while an odd numbered molecular mass must have odd number of nitrogen atoms.
For example, the unsaturated ketone, 4-methyl-3-pentene-2-one has no N. therefore, the mass of the molecular ion (m/z = 98) is an even number while diethylmethylamine has one N and its molecular mass (m/z = 87) is an odd number.
Why would you look at soil (only) and not include plants? Inorganic N is very volatile over the seasons. Most of the N stock in the soil will be in the organic matter (in unfertilized soils). What counts in an ecosystem is the uptake of N (and P) and that has very little to do with the stock.
Article Nitrogen and phosphorus limited production of cereals and se...
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