[Determination of the artificial bezoar powder in the bezoar powder by near-infrared diffuse reflectance spectrometry].
OBJECTIVE
To establish a method determinating the artificial bezoar powder in the bezoar powder by near-infrared diffuse reflectance spectrometry.


METHODS
The calibration set and the test set were set up by adding unequal artificial bezoar powder to the bezoar powder (content range: 0% - 100%), collecting the NIR spectrum of the samples. A mathematical model with partial least squares (PLS) was established to predict the test set.


RESULTS
The coefficients of determination (R2) is 99.42 and the relative mean prediction error (RMSECV) is 1.93 respectively for the internal cross-validation set obtained. The coefficients of determination (R2) is 99. 9 and the relative mean standard error prediction (RMSEP) is 0.797, respectively for the test set obtained. The correlation coefficient between true and prediction is 0. 9972.


CONCLUSIONS
This method is reliable and can be used to control the quality of preparations of bezoar powder.
Lin
Peiying
P
Center of Analysis & Test, College of Pharmacy, Second Military Medical University, Shanghai.
Wang
Hong
H
Dong
Xin
X
Wu
Yutian
Y
Lou
Ziyang
Z
D000818:Animals; D002417:Cattle; D004340:Drug Contamination; D016018:Least-Squares Analysis; D008419:Materia Medica / Q000032:analysis* / Q000737:chemistry; D008962:Models, Theoretical; D011208:Powders; D011786:Quality Control; D019265:Spectroscopy, Near-Infrared / Q000379:methods*
D008419:Materia Medica; D011208:Powders