scholarly journals Behaviour of a Ternary Mixture with the Net Separation Ratio Close to Zero

2021 ◽  
Vol 1945 (1) ◽  
pp. 012030
Author(s):  
Tatyana Lyubimova ◽  
Sergei Prokopev ◽  
Valentina Shevtsova
Keyword(s):  
Ternary Mixture ◽  
Separation Ratio

scholarly journals Application of Derivative, Derivative Ratio, and Multivariate Spectral Analysis and Thin-Layer Chomatography-Densitometry for Determination of a Ternary Mixture Containing Drotaverine Hydrochloride, Caffeine, and Paracetamol

2007 ◽  
Vol 90 (2) ◽  
pp. 391-404 ◽  
Author(s):  
Fadia H Metwally ◽  
Yasser S El-Saharty ◽  
Mohamed Refaat ◽  
Sonia Z El-Khateeb
Keyword(s):  
Thin Layer ◽  
Least Squares ◽  
Ternary Mixture ◽  
Principal Component Regression ◽  
Pharmaceutical Preparations ◽  
Principal Component ◽  
Standard Addition ◽  
Drotaverine Hydrochloride ◽  
Assay Precision

Abstract New selective, precise, and accurate methods are described for the determination of a ternary mixture containing drotaverine hydrochloride (I), caffeine (II), and paracetamol (III). The first method uses the first (D1) and third (D3) derivative spectrophotometry at 331 and 315 nm for the determination of (I) and (III), respectively, without interference from (II). The second method depends on the simultaneous use of the first derivative of the ratio spectra (DD1) with measurement at 312.4 nm for determination of (I) using the spectrum of 40 μg/mL (III) as a divisor or measurement at 286.4 and 304 nm after using the spectrum of 4 μg/mL (I) as a divisor for the determination of (II) and (III), respectively. In the third method, the predictive abilities of the classical least-squares, principal component regression, and partial least-squares were examined for the simultaneous determination of the ternary mixture. The last method depends on thin-layer chromatography-densitometry after separation of the mixture on silica gel plates using ethyl acetatechloroformmethanol (16 + 3 + 1, v/v/v) as the mobile phase. The spots were scanned at 281, 272, and 248 nm for the determination of (I), (II), and (III), respectively. Regression analysis showed good correlation in the selected ranges with excellent percentage recoveries. The chemical variables affecting the analytical performance of the methodology were studied and optimized. The methods showed no significant interferences from excipients. Intraday and interday assay precision and accuracy values were within regulatory limits. The suggested procedures were checked using laboratory-prepared mixtures and were successfully applied for the analysis of their pharmaceutical preparations. The validity of the proposed methods was further assessed by applying a standard addition technique. The results obtained by applying the proposed methods were statistically analyzed and compared with those obtained by the manufacturer's method.

Experimental and theoretical study of excess molar volumes and enthalpies for the ternary mixture butyl butyrate + 1-octanol + decane at 308.15 K

2003 ◽  
Vol 405 (1) ◽  
pp. 147-154 ◽  
Author(s):  
Sandra Garcı́a-Garabal ◽  
Eulogio Jiménez ◽  
Luisa Segade ◽  
Herminio Casas ◽  
Carlos Franjo ◽  
...  
Keyword(s):  
Ternary Mixture ◽  
Theoretical Study ◽  
Excess Molar Volumes ◽  
Butyl Butyrate ◽  
Molar Volumes

Mutual diffusion in the ternary mixture of water + methanol + ethanol and its binary subsystems

2013 ◽  
Vol 15 (11) ◽  
pp. 3985 ◽  
Author(s):  
Stanislav Par̆ez ◽  
Gabriela Guevara-Carrion ◽  
Hans Hasse ◽  
Jadran Vrabec
Keyword(s):  
Ternary Mixture ◽  
Mutual Diffusion

VLE properties and the critical parameters of ternary mixture of CO2+toluene/dichloromethane involved in the SEDS precipitation process

2021 ◽  
pp. 116371
Author(s):  
Ilnar Sh. Khabriev ◽  
Vener F. Khairutdinov ◽  
Farid M. Gumerov ◽  
Rafil M. Khuzakhanov ◽  
Ruslan M. Garipov ◽  
...  
Keyword(s):  
Ternary Mixture ◽  
Critical Parameters ◽  
Precipitation Process

Determination of vanadium(V), chromium(VI) and cerium(IV) in binary or ternary mixture

Talanta ◽  
1975 ◽  
Vol 22 (1) ◽  
pp. 105-106 ◽  
Author(s):  
K. Sriramam
Keyword(s):  
Ternary Mixture ◽  
Chromium Vi
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