Spectrophotometric determination of Ca (II) by anthrapurpurine. II. Use of hydroalcoholic medium

• Autores: F. Capitán García, M. Román
• Localización: Ars pharmaceutica, ISSN 0004-2927, ISSN-e 2340-9894, Vol. 9, Nº. 1-2, 1968, págs. 6-6
• Idioma: español
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• Resumen

  • Continuing the work about the use of Anthrapurpurine for the spectrophotometric determination of Ca (II), a study is made of the satibility of hydro-alcoholics solutions of Anthrapurpurine and Anthrapurpurine-Ca complex in amoniacal media. Since the solutions of the mentioned complex are sufficiently stable and obeys the Lambert-Beer's law for concentrations from 1 to 8 ppm, a method for the determination of Ca (II) is proposed. The error and reproducibility of this method is stablished.