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Determination of ammonium N and nitrate N in acid permanganate solution used to absorb ammonia, nitric oxide, and nitrogen dioxide evolved from soils

Journal Article · · Commun. Soil Sci. Plant Anal.; (United States)

Simple steam distillation methods are described for determination of ammonium N and nitrate N in acid KMnO/sub 4/ solution used to absorb NH/sub 3/, NO and NO/sub 2/ evolved from soils. They involve use of MgO for distillation of ammonia and of FeSO/sub 4/, Ag/sub 2/SO/sub 4/, and MgO for reduction of nitrate to ammonia. The methods are rapid and precise, and they permit nitrogen-15 analysis of NH/sub 3/-N and (NO + NO/sub 2/)-N evolved from soils. 14 references, 1 table.

Research Organization:
Iowa State Univ., Ames
OSTI ID:
6382813
Journal Information:
Commun. Soil Sci. Plant Anal.; (United States), Journal Name: Commun. Soil Sci. Plant Anal.; (United States) Vol. 4:3; ISSN CSOSA
Country of Publication:
United States
Language:
English