SUN Peng,XIANG Chao-qun,CHEN Qi-wen,et al.Nondestructive Determination of Ephedrine Alkaloids and Morphine in Keke Tablets by Near Infrared Spectroscopy[J].Journal of Instrumental Analysis,2024,43(04):637-642.
SUN Peng,XIANG Chao-qun,CHEN Qi-wen,et al.Nondestructive Determination of Ephedrine Alkaloids and Morphine in Keke Tablets by Near Infrared Spectroscopy[J].Journal of Instrumental Analysis,2024,43(04):637-642. DOI: 10.12452/j.fxcsxb.23120127.
Nondestructive Determination of Ephedrine Alkaloids and Morphine in Keke Tablets by Near Infrared Spectroscopy
The content of ephedrine alkaloids and morphine is of great significance for the quality evaluation of Keke tablets. In view of the time and effort of traditional methods for the quality analysis of Keke tablets,this study was based on near infrared spectroscopy(NIRS) to establish a rapid,non-destructive and efficient method for the quality evaluation of Keke tablets. The quantitative analysis model of ephedrine alkaloids and morphine was established by NIRS and partial least squares regression(PLSR),and the performance of the model was optimized by different pretreatment methods and variable selection methods.
R
-square of calibration set(
R
c
2
),
R
-square of prediction set(
R
p
2
) and residual predictive deviation(RPD) were calculated as the evaluation index of the correction model. The results showed that the pretreatment method is standard normal variable transformation(SNV) combined with variable selection for competitive adaptive reweighted sampling(CARS) model has the better performance. The
R
c
2
,
R
p
2
and RPD of the NIR models of ephedrine alkaloids and morphine in Keke tablets were 0.91,0.93,4.00 and 0.92,0.94 and 4.24,respectively,indicating that the model performance was good and the quality detection of Keke tablets was realized. The results show that NIRS and CARS can be used for rapid and non-destructive analysis of Keke tablets,which can provide a good reference for quality detection of Keke tablets.
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