| isotopic analysis of n and o in nitrite and nitrate by sequential selective bacterial reduction to n2o. | nitrite is an important intermediate species in the biogeochemical cycling of nitrogen, but its role in natural aquatic systems is poorly understood. isotopic data can be used to study the sources and transformations of no2- in the environment, but methods for independent isotopic analyses of no2- in the presence of other n species are still new and evolving. this study demonstrates that isotopic analyses of n and o in no2- can be done by treating whole freshwater or saltwater samples with the d ... | 2007 | 17580983 |