Spectrophotometric determination of aluminum and iron in calcium |
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Authors: | Wilbur Sprain Charles V. Banks |
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Affiliation: | Contribution No 172 from the Institute for Atomic Research and Department of Chemistry, Iowa State College, Ames, IowaU.S.A. |
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Abstract: | A simple, rapid, and accurate method is described whereby micro amounts of aluminum and iron can be determined in calcium metal. The iron is determined spectrophotometrically by measuring the absorbency of the reddish-orange color of the tris(1,10-phenanthroline)iron(II)ion, [(C12H8N2)3Fe]++. This complex effectively removes the iron interference, and the aluminum is determined spectrophotometrically in the solution remaining from the iron determination by extracting it with a chloroform solution of 8-quinolinol and measuring the absorbency of the yellow color of the tris(8-quinolinolo)aluminum(III) in the chloroform solution. |
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