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A TECHNIQUE FOR SELECTIVE SOLUTION OF IRON OXIDES IN THIN SECTIONS OF SOIL
Author(s) -
BULLOCK P.,
LOVELAND P. J.,
MURPHY C. P.
Publication year - 1975
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1975.tb01948.x
Subject(s) - ammonium oxalate , pyrophosphate , oxalate , araldite , chemistry , sodium dithionite , ammonium bicarbonate , materials science , metallurgy , nuclear chemistry , inorganic chemistry , mineralogy , raw material , organic chemistry , adhesive , layer (electronics) , enzyme
Summary A technique to study optically the effects of three different extraction procedures for removing iron from thin sections of soil is described. The distribution of iron in each section is recorded before treatment. Silicone grease is then applied to all parts of the sections except those to be treated. The areas selected for treatment are immersed for 24 hours in one of three beakers containing dithionite‐citrate‐bicarbonate, 02M ammonium oxalate at pH 3 and 01M K‐pyrophosphate at pH10. After treatment, the sections are degreased and the effects of the various treatments examined optically.