title: A rapid gas-extraction technique for the quantitative study of denitrification in aquatic systems by N-isotope ratio analysis.
mesh_terms: D000693:Anaerobiosis; D002170:Canada; D003470:Culture Media; D005618:Fresh Water; D013058:Mass Spectrometry; D008722:Methods; D009566:Nitrates / Q000378:metabolism*; D009584:Nitrogen / Q000032:analysis*; D009587:Nitrogen Isotopes; D011549:Pseudomonas / Q000378:metabolism; D014867:Water / Q000032:analysis*; D014871:Water Microbiology
chemical_list: D003470:Culture Media; D009566:Nitrates; D009587:Nitrogen Isotopes; D014867:Water; D009584:Nitrogen