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Adsorption of Calcium and Strontium by Crandallite
Author(s) -
Kunishi H. M.,
Taylor A. W.
Publication year - 1968
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/sssaj1968.03615995003200030048x
Subject(s) - strontium , chemistry , calcium , dilution , adsorption , phosphate , mineral , isotope dilution , selectivity , inorganic chemistry , nuclear chemistry , mineralogy , environmental chemistry , chromatography , biochemistry , thermodynamics , mass spectrometry , physics , organic chemistry , catalysis
Samples of the phosphate mineral crandallite, CaAl 3 (PO 4 ) 2 (OH) 5 · H 2 O were equilibrated with solutions containing calcium and strontium chlorides labelled with 45 Ca and 85 Sr. The apparent selectivity coefficient for the equilibrium system, calculated from the isotopic dilution, varied from 1.5 at pH 9.3 to 8.2 at pH 4.7. The mineral has limited value as a scavenging agent for the removal of strontium from soil.