About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in SSSAJ

  1. Vol. 30 No. 2, p. 193-196
     
    Received: Sept 13, 1965
    Accepted: Jan 4, 1966


 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2136/sssaj1966.03615995003000020016x

Inorganic Nitrogen Transformations Through the Oxidation and Reduction of Iron1

  1. Tyng-Tsair Chao and
  2. Wybe Kroontje2

Abstract

Abstract

In acid solution nitrate can be reduced by ferrous iron to N2 through such intermediates as nitrogen tetraoxide, nitrous acid, hyponitrous acid and nitrous oxide or through nitrogen tetraoxide, nitrous acid, nitric oxide, and nitrous oxide. These sequences show similarities to those occurring in the denitrification process. In a basic solution the reduction of nitrite to N2 may go through nitric oxide, N2O22-, and nitrous oxide, or it may be reduced to ammonia through hydroxylamine, and hydrazine. Hydrazine and hydroxylamine are very unstable in the presence of iron in solution. In acid solution both hydrazine and hydroxylamine are oxidized by ferric iron to N2 and N2O. The amount of N2O formed is proportional to the ferric iron concentration.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © . Soil Science Society of America