Title : Small-scale distribution of interstitial nitrite in freshwater sediment microcosms: the role of nitrate and oxygen availability, and sediment permeability.

Pub. Date : 2002 Apr

PMID : 12037614






4 Functional Relationships(s)
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1 Porewater extractions revealed ecotoxicologically critical NO2(-) concentrations in hypoxic and anoxic sediment layers in which significant NO3(-) consumption took place. Nitrogen Dioxide NBL1, DAN family BMP antagonist Homo sapiens
2 Two modes of NO3(-) supply to the sediments were compared: In treatments with NO3(-) supply to the overlying water, a subsurface maximum of NO2(-) concentration was observed, coinciding with the site of maximum NO3(-) consumption. Nitrogen Dioxide NBL1, DAN family BMP antagonist Homo sapiens
3 Two modes of NO3(-) supply to the sediments were compared: In treatments with NO3(-) supply to the overlying water, a subsurface maximum of NO2(-) concentration was observed, coinciding with the site of maximum NO3(-) consumption. Nitrogen Dioxide NBL1, DAN family BMP antagonist Homo sapiens
4 When NO3(-) was perfused up through the sediment cores, however, NO2(-) accumulated throughout the entire sediment column. Nitrogen Dioxide NBL1, DAN family BMP antagonist Homo sapiens