Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

On-line analysis of nitrogen stable isotopes in NO from ambient air samples

Title data

Lauf, Jutta ; Gebauer, Gerhard:
On-line analysis of nitrogen stable isotopes in NO from ambient air samples.
In: Analytical Chemistry. Vol. 73 (2001) Issue 6 . - pp. 1126-1133.
ISSN 1520-6882
DOI: https://doi.org/10.1021/ac0009292

Abstract in another language

A method was developed for the on-line analysis of nitrogen stable isotopes at the natural abundance level in NO in order to study the NO contribution to the nitrogen cycle in ecosystems and in the atmosphere. The method enables a quick and accurate determination of 15N/14N ratios for NO and consists of the following steps: (a) accumulation of NO from air samples on a molecular sieve of 5 Angstrom, (b) desorption of NO from the molecular sieve during 15 min of heating at 350 °C (an offset of Delta delta 4.6 o/oo must be corrected for), (c) trapping and cryofocusation of the desorbed NO on a PoraPlot Q matrix at -196 °C during heating, (d) release of the trapped NO from the PoraPlot Q matrix followed by chromatographic separation, reduction to N2, and isotopic composition analysis. A minimum sample size of 125 nmol of NO is recommended. A correction function for the calculation of the delta 15N-NO values was introduced for sample sizes from 125 to 220 nmol of NO. Measurements of NO in automobile exhaust have proven the applicability of the developed method.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER25935
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Ecology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 11 Sep 2015 06:34
Last Modified: 11 Sep 2015 06:34
URI: https://eref.uni-bayreuth.de/id/eprint/19337