The Application Of Chemometrics In Pharmaceutical Analysis

The application of spectrometric techniques in pharmaceutical samples analysis has been developed. Chemometrics is a new discipline in chemistry that applied mathematical, statistical and other logic-based methods to analyze chemical data in particular in analytical chemistry. And the combination of spectrometry with chemometrics techniques can be used to solve some problem, which are countered in spectrum resolution.This paper is divided into six parts:Part IThis section has gathered most of the literatures that relate to spectrometry to application in the analysis of pharmaceutical multicomponent spectrometric determination. Including ultraviolet-visible spectrophotometry, fluorescence spectrophotometry, infrared absorption spectroscopy, phosphorescence spectrophotometry and nuclear magnetic resonance, et al. And the application of chemometrics in the analysis of pharmaceutical multicomponent spectrometric also be discussed. The chemometrics includes chemical experimental design and optimization (such as orthogonal design, simplex method and variance analysis), chemical pattern recognition (such as clusters, PCA, k-nearest neighbour analysis, SIMCA and ANN), multi-variance calibration (such as MLR, CLS, PCR and PLS) and spectrum analysis (such as ITTFA, EFA and FSWEFA), signal processing (such as filtering, smoothing, derivation and convolution). In the paper, for each category the experimental foundation and the situation of chemometrics' application in this field have been discussed. Including the sensitivity, linear range and chemometrics parameter.Part IIIn this section, metronidazole, fenbufen and ketoprofen have absorption at ultraviolet zone, and theirs absorption spectra are overlapping. So they can not be determined individually spectrophotometry without prior separation. In this paper , the chemometric multivariate calibration method was applied to the simultaneous determination of these three compounds in a potassium dihydrogen phosphate-sodium hydrogen phosphate buffer solution(pH7.0), and the analytical results was compared with classical least squares(CLS), principal components regression(PCR) and partial least squares(PLS). These methods weresucessfully applied to the analysis of drugs with satisfied results.Part IIIIn this section, A kinetic-spectrophotometric method has been developed for the simultaneous quantitative determination of Indapamide and Amlodipine besylate in rat serum. It relies on the different kinetic rates of the oxidative coupling reactions. The oxidative coupling reactions between 3-methylbenzothiazolin-2-one hydrazone (MBTH) and Indapamide and Amlodipine besylate, using...