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Solution Aluminum Anomalies Resulting from Various Filtering Materials
Author(s) -
Jardine P. M.,
Zelazny L. W.,
Evans A.
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/sssaj1986.03615995005000040012x
Subject(s) - potentiometric titration , filter (signal processing) , residual , titration , chemistry , solubility , aluminium , solubility equilibrium , membrane , ion exchange , aqueous solution , filter paper , titration curve , inorganic chemistry , analytical chemistry (journal) , ion , chromatography , organic chemistry , mathematics , algorithm , computer vision , biochemistry , computer science
Commercially available filter papers and membranes of varying composition were examined for their effect on solution Al. This investigation was conducted in order to assess the impact of filter materials on environmental water samples and solubility studies. Many of the filter materials in equilibrium with unneutralized and partially neutralized AlCl 3 removed a significant portion of Al from solution (0‐87% of added Al). The loss of solution Al resulted from the negative charge and/or residual anion content of the filter material. Filter discs that resulted in large losses of solution Al generally had high levels of F ‐ , PO 3‐ 4 , and/or SO 2‐ 4 and had an appreciable cation exchange capacity. Removal of residual salts from uncharged membrane filters essentially eliminated any loss of Al from solution. Potentiometric titration analyses of the equilibrium Al solutions indicated marked titration curve distortions for several filter materials, which was related to their residual contaminants.