Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1080/00211919408046739 |
| Title (Primary) | Methodische Untersuchungen zum 15N-ConFlo-IRMS-System. Methodical studies of 15N-ConFlo-IRMS-technique |
| Author | Gehre, M.; Hofmann, D.; Weigel, P. |
| Source Titel | Isotopenpraxis |
| Year | 1994 |
| Department | ISOBIO; OEC; COE |
| Volume | 30 |
| Issue | 2-3 |
| Page From | 239 |
| Page To | 245 |
| Language | englisch |
| Keywords | Methodology; nitrogen 15; natural abundances; on-line-IRMS |
| Abstract | After installing a C-GC-IRMS-System (Elemental analyzer EA 1108 CHN + IRMS MAT 252) some problems arose with respect to the external precision of the δ15N values (standard deviation approx. 1‰ at < 50 μg N) after changeover from 13C to 15N measurements. Attempts were made to determine the reasons for these effects and to eliminate them by changes of the Carlo Erba on-line combustion system (EA) and the split. Non-quantifiable contributions, e.g., air nitrogen and/or N2 in carrier gas helium were reduced by a blank correction. Using Cyclohexanone-2, 4-dinitrophenylhydrazone it was shown that under the same conditions and after a common blank correction with small and large amounts of samples (60-650 μg, 20% N) an external precision of 0.2‰ (standard deviation, 10 cycles) can be reached. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=27735 |
| Gehre, M., Hofmann, D., Weigel, P. (1994): Methodische Untersuchungen zum 15N-ConFlo-IRMS-System. Methodical studies of 15N-ConFlo-IRMS-technique Isotopenpraxis 30 (2-3), 239 - 245 10.1080/00211919408046739 |
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