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New Information on the Long-Term Fate of Ammonium in Ground Water

The ammonium (NH4+) dissolved in ground water in the center of a contaminant plume on Cape Cod, Massachusetts, has persisted for decades after it entered the subsurface, while other forms of nitrogen in the plume, such as nitrate (NO3-), have moved on with the ground water. This is the observation of a team of USGS scientists, and they have found that ammonium moves much more slowly than nitrate because of chemical and microbiological processes that retard its movement in the subsurface.

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Date Of Record Release 2010-01-19 17:10:04
Description The ammonium (NH4+) dissolved in ground water in the center of a contaminant plume on Cape Cod, Massachusetts, has persisted for decades after it entered the subsurface, while other forms of nitrogen in the plume, such as nitrate (NO3-), have moved on with the ground water. This is the observation of a team of USGS scientists, and they have found that ammonium moves much more slowly than nitrate because of chemical and microbiological processes that retard its movement in the subsurface.
Classification
Resource Type
Format
Subject
Source United States Geological Survey
Keyword Fate and transport, Research, Models
Date Of Record Creation 2010-01-19 17:03:36
Education Level
Date Last Modified 2010-01-19 17:10:05
Language English
Date Record Checked: 2010-01-19 00:00:00 (W3C-DTF)

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