1.
J Pharm Biomed Anal
; 17(1): 141-52, 1998 May.
Article
in English
| MEDLINE
| ID: mdl-9608436
ABSTRACT
The influence of temperature variations on the rank of a NIR dataset, has been investigated by comparing the results of principal component analysis (PCA) and evolving factor analysis (EFA), applied to two datasets measured at constant temperature and varying temperature. After temperature correction, the concentration profiles and spectra were obtained with PCA, SIMPLISMA and the orthogonal projection approach (OPA). The same resolution methods were used on the dataset measured at constant temperature.