| Autor: |
Ventullo, Roy, Rowe, John |
| Zdroj: |
Current Microbiology; Jan1982, Vol. 7 Issue 1, p29-33, 5p |
| Abstrakt: |
Denitrification potentials of epilithic microbial populations were assessed using the acetylene inhibition method, in which acetylene is used to block the reduction of nitrous oxide (NO) to nitrogen (N). Samples of the epilithic community were incubated in filtered river water containing modified Bushnell-Haas salts, glycerol, and yeast extract-under aerobic (0.2 atm O) and anaerobic (0.2 atm He) acetylene atmospheres. NO was produced under both atmospheres only if exogenous nitrate of nitrite was added. Denitrification potentials were typically higher when nitrite was the added electron acceptor. The rates of denitrification were temperature-and carbon-dependent and the maximum rate, 8.53 μg NO−N per cm per day occurred at 23°C when nitrite was the electron acceptor. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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