Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1504/IJEP.2006.009108 |
| Titel (primär) | Laboratory test system to measure microbial respiration rate |
| Autor | van Afferden, M.; Hansen, A.M.; Kaiser, C.; Chapelain, N. |
| Quelle | International Journal of Environment and Pollution |
| Erscheinungsjahr | 2006 |
| Department | UBZ |
| Band/Volume | 26 |
| Heft | 1-3 |
| Seite von | 220 |
| Seite bis | 233 |
| Sprache | englisch |
| Abstract | This Study reports a sensible, accurate and economic method for continuous measuring microbial respiration. The Measuring principle is ail open system, with a continuous air-flow through. Evolved CO, is absorbed and precipitated as carbonate by a Ba(OH)(2) solution, causing a stoichiometrical decrease in ionic strength of the Solution and in electrical conductivity. Conductivity and Ba(OH)2 concentration correlate over a range of more than three orders of magnitude with a determination coefficient of r(2) = 0.999. Between 20 degrees C and 50 degrees C and Ba(OH)(2) concentrations of up to 0.099M, all automated temperature correction was developed. The system detects evolved CO, quantitatively up to a maximum of 0.22 mmol O-2 min(-1) (825 mbar, 20 degrees C) before limiting microbial respiration. A maximum CO, flow of 1.06 mmol min(-1) is quantitatively absorbed under these conditions. The method was applied to characterise soil respiration of a soil sample from ail agricultural experimental site in Tabasco, Mexico |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=3085 |
| van Afferden, M., Hansen, A.M., Kaiser, C., Chapelain, N. (2006): Laboratory test system to measure microbial respiration rate Int. J. Environ. Pollut. 26 (1-3), 220 - 233 10.1504/IJEP.2006.009108 |
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