Characterization and Dating of Blue Ballpoint Pen Inks Using Principal Component Analysis of UV-Vis Absorption Spectra, IR Spectroscopy, and HPTLC

2012 ◽  
Vol 57 (4) ◽  
pp. 1087-1093 ◽  
Author(s):  
Samir Senior ◽  
Ezzat Hamed ◽  
Mamdouh Masoud ◽  
Eman Shehata
Keyword(s):  
Principal Component Analysis ◽  
Ir Spectroscopy ◽  
Absorption Spectra ◽  
Principal Component ◽  
Component Analysis ◽  
Ballpoint Pen Inks

PHARMACEUTICAL FORMULATION MANUFACTURER DISCRIMINATION BY INFRARED SPECTROSCOPY AND PRINCIPAL COMPONENT ANALYSIS

2019 ◽  
pp. 7-15
Author(s):  
E.M. Basova ◽  
Yu.N. Litvinenko ◽  
N.А. Polotnyanko
Keyword(s):  
Principal Component Analysis ◽  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Principal Component ◽  
Component Analysis ◽  
Active Pharmaceutical Ingredients ◽  
Pharmaceutical Ingredients ◽  
The Third ◽  
Chemometric Technique ◽  
Tablet Formulations

In the present work Fournier transform infrared (IR) spectroscopy in association with chemometric technique was employed to identify kind of tablet formulations containing paracetamol and/or caffeine as active pharmaceutical ingredients. 13 samples of 5 commercially available brand tablets of different manufacturers and batches were bayed in local pharmacies. IR spectra of samples were recorded in the range 600—4000 cm-1 and subjected to and principal component analysis (PCA) which allowed to clearly identify 5 clusters in the scores plot using the third and the second principal components, corresponding to the brands of tablets. For Paracetamol and Caffeine-sodium benzoate tablets the combination of IR spectroscopy and PCA was able to recognize the manufacturer on the basis of distance between samples in clusters in the PCA scores plot.

Wavelet based de-noising of breath air absorption spectra profiles for improved classification by principal component analysis

2015 ◽  
Author(s):  
Yu. V. Kistenev ◽  
A. V. Shapovalov ◽  
A. V. Borisov ◽  
D. A. Vrazhnov ◽  
V. V. Nikolaev ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Absorption Spectra ◽  
Principal Component ◽  
Component Analysis

Applications of principal component analysis to breath air absorption spectra profiles classification

2015 ◽  
Author(s):  
Yu. V. Kistenev ◽  
A. V. Shapovalov ◽  
A. V. Borisov ◽  
D. A. Vrazhnov ◽  
V. V. Nikolaev ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Absorption Spectra ◽  
Principal Component ◽  
Component Analysis

scholarly journals XAS studies of Se speciation in selenite-fed rats

Metallomics ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 2193-2203 ◽  
Author(s):  
Claire M. Weekley ◽  
Jade B. Aitken ◽  
Paul K. Witting ◽  
Hugh H. Harris
Keyword(s):  
Principal Component Analysis ◽  
Absorption Spectra ◽  
Principal Component ◽  
Component Analysis ◽  
Selenium Speciation ◽  
X Ray ◽  
X Ray Absorption ◽  
Se Speciation

An investigation of selenium speciation in the tissues of selenite-fed rats by principal component analysis of X-ray absorption spectra.

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