Application of absorbancy ratios to the analysis of pharmaceuticals IV. Analysis of ternary mixtures

✍ Scribed by M. Pernarowski; A. M. Knevel; J. E. Christian

• Publisher: John Wiley and Sons
• Year: 1962
• Tongue: English
• Weight: 508 KB
• Volume: 51
• Category: Article
• ISSN: 0022-3549
• DOI: 10.1002/jps.2600510718

✦ Synopsis

Four equations that may be used in the analysis of ternary mixtures are derived. All of these equations are based o n the relationship between absorbancy ratio values and the relative concentration of one of the components in the ternary mixture. To indicate the applicability of these equations, three ternary mixtures were investigated, one in the ultraviolet region and two in the infrared region of the electromagnetic spectrum. Methods of plotting data are discussed and the utility of such plots under specific analytical situations are pointed out.

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'45 = a7 cx + a5 c y + a1 cz (Eq. 1) Cn, Cy, and Cz are the concentrations of X, Y, and Z in the mixture. Preceding each of these symbols are the absorbancy index values for the thre: com-Received Tune 3 . 19Gl from the School of Phnrmarv. _ I I'iirdue University, West ~a f a y e t t e , Ind. I ' < i o d :ind I)rug I)irectiratc, Ott:iw;i, Canacl;i.