Simultaneous chemiluminescence determination of citric acid and oxalic acid using multi-way partial least squares regression

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29214-29221 ◽  
Author(s):  
Ali Mokhtari ◽  
Mohsen Keyvanfard ◽  
Iraj Emami
Keyword(s):  
Citric Acid ◽  
Oxalic Acid ◽  
Least Squares ◽  
Simultaneous Determination ◽  
Partial Least Squares ◽  
Partial Least Squares Regression ◽  
Least Squares Regression ◽  
Chemiluminescent Method

A novel kinetic chemiluminescent method proposed for the simultaneous determination of oxalic acid and citric acid in their mixtures.

scholarly journals UV-spectrophotometry-assisted chemometric methods for simultaneous determination of ambroxol hydrochloride and doxofylline in pharmaceutical formulation

2020 ◽  
Vol 14 (2) ◽  
pp. 106-113
Author(s):  
Kalpana Patel ◽  
Priyanka Shah ◽  
Purvi Shah ◽  
Tejal Gandhi
Keyword(s):  
Least Squares ◽  
Simultaneous Determination ◽  
Partial Least Squares ◽  
Partial Least Squares Regression ◽  
Pharmaceutical Formulation ◽  
Uv Spectrophotometry ◽  
Least Squares Regression ◽  
Derivative Method ◽  
Ambroxol Hydrochloride

Two methods, ratio spectra derivative method and partial least squares regression (PLS) were developed for the simultaneous estimation of ambroxol hydrochloride and doxofylline in combined dosage form. In the first method, ratio spectra derivative method, analytical signals were measured at the wavelengths corresponding to either maximums or minimums for both drugs in the first derivative spectra of the ratio spectra obtained by dividing the standard spectrum of one of two drugs in water. Partial least squares regression (PLS) was used for data analysis of and the parameters of the chemometry procedures were optimized. In this study, the simultaneous determination of ambroxol hydrochloride and doxofylline in pharmaceuticals by chemometric approaches using UV spectrophotometry has been reported. Spectra of ABH and DOX were recorded at several concentrations within their linear ranges between 2-12 μg/mL and 15-40 μg/mL respectively and applied to pharmaceutical formulation, tablet, with no interference with excipients as indicated by the results of the recovery study. The proposed methods are simple, rapid and can be easily used in the quality control of drugs as alternative analytical tools.

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