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AbstractAbstract
[en] Nitrogenous substances naturally contain a slight quantity of 15N which seems to have little influence on the values of isotope ratios 15N/14N obtained when nitrogen compounds depleted or enriched in 15N are used. However, when various soils as well as water and plants are tested, they show isotopic variations which do not seem to be negligible. Those differences may be due party at least, to the action of microorganisms such as Nitrosomonas europaea which fractionate the nitrogen isotopes
[fr]
Les substances azotees contiennent naturellement une faible quantite d'azote 15 qui parait avoir peu d'influence sur les valeurs des rapports isotopiques 15N/14N obtenues apres marquage a l'azote enrichi ou appauvri en 15N. Toutefois les differents sols, l'eau, les vegetaux presentent entre eux des variations isotopiques qui ne paraissent pas negligeables. Ces differences pourraient etre dues, du moins en partie, a l'action des microorganismes comme Nitrosomonas europaea qui fractionnent les isotopes de l'azoteOriginal Title
Rapports isotopiques naturels de l'azote. I. Premiers resultats: sols de Dombes
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Journal Article
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Revue d'Ecologie et de Biologie du Sol; v. 14(2); p. 279-287
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