title: Effect of chemicals used as nitrification inhibitors on the denitrification process.
abstract: Several chemicals used as nitrification inhibitors were tested to determine their effect on dentrification by a Pseudomonas sp. and in soil. Denitrification by the bacterium was suppressed by 2-chloro-6(-trichloromethyl)-pyridine (N-Serve) at a concentration of 50 ppm, while 2,5-dichloroaniline caused the accumulation of nitrite in the culture medium. The nitrification inhibitors had little effect on the denitrifying activity in soil under anaerobic conditions. 2-Sulfanilamidothiazole inhibited denitrification to some extent and samples supplied with potassium azide produced N2O rather than N2 as the predominant gas.
mesh_terms: D000693:Anaerobiosis; D000814:Aniline Compounds / Q000494:pharmacology; D001386:Azides / Q000494:pharmacology; D008628:Mercury; D009566:Nitrates / Q000378:metabolism*; D009942:Organometallic Compounds / Q000494:pharmacology; D011549:Pseudomonas / Q000187:drug effects* / Q000378:metabolism; D011725:Pyridines / Q000494:pharmacology; D011743:Pyrimidines / Q000494:pharmacology; D012988:Soil Microbiology; D013424:Sulfanilamides / Q000494:pharmacology; D013844:Thiazoles; D014230:Triazoles / Q000494:pharmacology
chemical_list: D000814:Aniline Compounds; D001386:Azides; D009566:Nitrates; D009942:Organometallic Compounds; D011725:Pyridines; D011743:Pyrimidines; D013424:Sulfanilamides; D013844:Thiazoles; D014230:Triazoles; D008628:Mercury