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Estimation of Isotopically Exchangeable Cadmium and Zinc in Soils
Author(s) -
Fujii R.,
Corey R. B.
Publication year - 1986
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/sssaj1986.03615995005000020010x
Subject(s) - loam , ethylenediaminetetraacetic acid , chemistry , soil water , cadmium , zinc , chelation , sewage sludge , environmental chemistry , silt , diethylenetriaminepentaacetic acid , nuclear chemistry , sewage , inorganic chemistry , soil science , geology , environmental science , environmental engineering , organic chemistry , paleontology
Isotopically exchangeable and chelate‐extractable Cd and Zn (16‐h equilibrations) were compared for a silt loam and a loamy sand with and without addition of 51 kg m −3 of sewage sludge. The chelating agents used were 5 m M DTPA (diethylenetriaminepentaacetic acid) at a soil to solution ratio of 1:5 and 5 and 1 m M EDTA (ethylenediaminetetraacetic acid) at soil to solution ratios of 1:5 and 1:2.5. The extractant best suited to estimate isotopically exchangeable Cd and Zn in the soils studied was 5 m M EDTA at a soil to solution ratio of 1:2.5. Extractions with this sulution ranged from 87 to 114% of the Cd isotopically exchangeable in 16 h and 91 to 113% of the Zn isotopically exchangeable in the two soils with and without sludge addition.