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Fixation of Iron and Zinc Applied as Chelates Into a Soil Column During Leaching
Author(s) -
Lahav N.,
Hochberg M.
Publication year - 1975
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/sssaj1975.03615995003900060047x
Subject(s) - zinc , adsorption , leaching (pedology) , chemistry , breakthrough curve , chloride , tracer , dispersion (optics) , ionic strength , inorganic chemistry , analytical chemistry (journal) , environmental chemistry , soil water , soil science , geology , physics , organic chemistry , nuclear physics , optics , aqueous solution
Abstract The movement of iron in the form of FeEDDHA and FeEDTA and zinc in the form of ZnEDTA was studied in columns of Rehovot sand under several flow rates and in the presence of either Ca(NO 3 ) 2 or KNO 3 with the same ionic strength of 0.0375 M /liter. Chloride was used as a tracer. FeEDDHA was neither adsorbed nor fixed by the soil. Both ZnEDTA and FeEDTA were fixed in the soil column in the presence of Ca 2+ but not in the presence of K + . ZnEDTA was not adsorbed significantly, whereas FeEDTA was adsorbed in the presence of either KNO 3 or Ca(NO 3 ) 2 solutions. Reasonable agreement was obtained between experimental results and theoretical calculations of the breakthrough curves, based on the analytical solution of the general dispersion equation.