Publication Details |
Category | Text Publication |
Reference Category | Journals |
DOI | 10.1080/10256019808036375 |
Title (Primary) | Bestimmung der 15N Häufigkeit bei nichtstatistischer 15N-Verteilung in N2 sowie bei N2O in Bodenluftproben mittels GC-R-IRMS-Kopplung in einem Probenlauf - Determination of N-15 with nonrandom-distribution of N2 and N2O in the soil atmosphere by GC-R-IRMS coupling |
Author | Schmidt, G.; Segschneider, H.-J.; Russow, R. |
Source Titel | Isotopes in Environmental and Health Studies |
Year | 1998 |
Department | BOPHY; BOFO |
Volume | 34 |
Issue | 1-2 |
Page From | 235 |
Page To | 243 |
Language | deutsch |
Keywords | Gas-Chromatography-Reduction-Isotope Ratio Mass Spectrometry (GC-R-IRMS) isotope analysis; nitrogen; nitrogen-15; nitrous oxide; nonrandom distribution of nitrogen-15; soil gases |
Abstract |
An analysis technique based on GC-R-IRMS coupling (Gas-Chromatography-Reduction-Isotope Ratio Mass Spectrometry) is demonstrated. The 15N abundance of N2 and N2O in atmospheric air or soil atmosphere from nitrification or denitrification processes with nonrandom distribution is determined in one run. The 12 ml sample is separated from CO2 and transported by a helium gas stream through a cooling trap. The N2O is trapped in the cooling trap while the N2 passes through it and enters the GC. After GC separation and O2 removal in a reduction column, part of the N2 enters an isotope mass spectrometer to determine the masses m/z 28,29 and 30. The interferences on mass 30 by the formation of NO in the ion source of the mass spectrometer are eliminated by a calibration and a correction procedure. Upon removing the cooling trap, the N2O is injected into the GC, where it is separated and then quantitatively reduced to N2 in a reduction column. The measurement of one sample takes 16 minutes. The detection limit of the 30Rt in alteration N2 is Δ30Rt = 5 · 10−7. The detection limit of the N2O is 3.6 nl. |
Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=8982 |
Schmidt, G., Segschneider, H.-J., Russow, R. (1998): Bestimmung der 15N Häufigkeit bei nichtstatistischer 15N-Verteilung in N2 sowie bei N2O in Bodenluftproben mittels GC-R-IRMS-Kopplung in einem Probenlauf - Determination of N-15 with nonrandom-distribution of N2 and N2O in the soil atmosphere by GC-R-IRMS coupling Isot. Environ. Health Stud. 34 (1-2), 235 - 243 10.1080/10256019808036375 |