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26 April 2024
 
  » pubmed » pmid17738970

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Nitrification in Paleocene Shale
J F Power ; J J Bond ; F M Sandoval ; W O Willis ;
Date 15 Mar 1974
Journal Science, 183 (4129), 1077-1079
AbstractExchangeable ammonium nitrogen is present in Paleocene (Fort Union) shale below a depth of 10 meters in North Dakota and eastern Montana. Above 10 meters, exchangeable ammonium nitrogen is nitrified in situ. The lack of viable nitrifying organisms and the probable lack of oxygen prevent in situ nitrification below 10 meters. Shale samples incubated at 27 degrees C under nonsterile conditions or shales exposed to atmospheric contamination exhibited active nitrification without additional treatment.
Source PubMed, pmid17738970 doi: 10.1126/science.183.4129.1077
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