Calmagite as a spectrophotometric reagent for aluminium.
Calmagite is proposed as a sensitive spectrophotometric reagent for aluminium, (570mmu) = 42000. After aqueous phase reaction at pH 8.6, the metal-reagent complex is extracted into chloroform by formation of an ion-association complex with a quaternary ammonium salt. The method is free from interference by common anions, and cationic interferences may be eliminated by the use of cyanide and EDTA as masking agents.
Woodward
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Department of Chemistry, University of Arizona, Tucson, Arizona 85721, U.S.A.
Freiser
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