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Accuracy of Several Immiscible Displacement Liquids
Author(s) -
Kittrick J. A.
Publication year - 1983
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/sssaj1983.03615995004700050043x
Subject(s) - tetrachloroethylene , gibbsite , calcite , trichloroethylene , chemistry , carbon tetrachloride , fluorocarbon , analytical chemistry (journal) , inorganic chemistry , mineralogy , chromatography , environmental chemistry , organic chemistry , kaolinite
Equilibrium solutions were displaced from moist samples of gibbsite and calcite of known stability using four different immiscible liquids, carbon tetrachloride, tetrachloroethylene, FC70 (a fluorocarbon), and 1,1,1‐trichloroethane. All four immiscible liquids permitted accurate solution analyses for gibbsite in the pH range near 4. In the pH range near 8.3, 1,1,1‐trichloroethane significantly decreased the pH of solutions displaced from calcite. All solutions in this pH range required protection from CO 2 variations. Tetrachloroethylene and FC70 permitted accurate analyses of displaced solutions and are less toxic than CCl 4 .