Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1080/10256019808234060 |
| Title (Primary) | Cryotrap enrichment of nitric oxide and nitrous oxide in their natural air concentration for N-15 analysis by GC-QMS |
| Author | Sich, I.; Russow, R. |
| Source Titel | Isotopes in Environmental and Health Studies |
| Year | 1998 |
| Department | BOPHY; BOFO |
| Volume | 34 |
| Issue | 3 |
| Page From | 279 |
| Page To | 283 |
| Language | englisch |
| Abstract | Determining the concentration and 15N abundance of the trace gases NO and N2O in air is difficult owing to their very low concentration in the atmosphere (NO < 1 ppb(v); N2O ≈ 0.32 ppm(v)). Although 15N analysis of N2O in ambient concentrations can be carried out using a Gas Chromatograph Quadruople Mass Spectrometer (GC-QMS) and a dosage of 2 mL air by means of a sample loop, this system is not sensitive enough to measure the ambient concentration of NO and its 15N abundance. Therefore the concentration of NO must be enriched by cryotrapping. The improved 15N analytical apparatus described here facilitates the sensitive and sufficiently accurate measurement of the ambient NO with a 15N abundance > 10at.% and thus represents an advance for 15N2O analysis (better sensitivity). |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=9015 |
| Sich, I., Russow, R. (1998): Cryotrap enrichment of nitric oxide and nitrous oxide in their natural air concentration for N-15 analysis by GC-QMS Isot. Environ. Health Stud. 34 (3), 279 - 283 10.1080/10256019808234060 |
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