Premium
Ammonium Sorption and Release from Rocks and Minerals
Author(s) -
Adams R. S.,
Stevenson F. J.
Publication year - 1964
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1964.03615995002800030014x
Subject(s) - sorption , silicate , igneous rock , silicate minerals , clay minerals , chemistry , geochemistry , mineral , ammonium , mineralogy , geology , environmental chemistry , nuclear chemistry , inorganic chemistry , adsorption , organic chemistry
Some igneous rocks and primary silicate minerals were found to retain added NH 4 + against extraction with 1.0 N KCl. The amounts ranged from 15 to 244 ppm., and were 3 to 15 times the quantity of NH 4 + in the original rock or mineral. At least two types of reactions were involved, namely, sorption at particle surface and intraparticle penetration. In contrast to the NH 4 + held in difficultly exchangeable forms by soils and secondary silicate (clay) minerals, part of the nonexchangeable NH 4 + in rocks and primary silicate minerals was released readily with hot 1.0 N KOH. The micas were primarily responsible for NH 4 + fixation by igneous rocks.