Rapid Identification of Dens Draconis and its Adulterants by NIR Correlation Coefficient Method
- VernacularTitle:基于近红外特征谱段相关系数法鉴别真伪龙齿
- Author:
Bisheng HUANG
;
Mingyang YUAN
;
Chi YU
;
Yimei LIU
;
Keli CHEN
- Publication Type:Journal Article
- Keywords:
Dens Draconis;
Near infrared spectroscopy;
Correlation coefficient method;
Identification
- From:
China Pharmacist
2014;(4):619-622
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To develop a qualitative analysis model for the fast identification of Dens Draconis and its adulterants by NIR correlation coefficient method. Methods:On the basis of the traditional morphological identification, the spectra were collected u-sing the fiber accessory of a near-infrared spectroradiometer. The reference spectra were set up using the NIR spectra of certified Dens Draconis. The characteristic spectral section was chosen and the appropriate threshold was set to establish a qualitative analysis model for the rapid identification of Dens Draconis and its adulterant. Results:The spectral section of 5 000-4 200 cm-1 was selected as the characteristic spectral section, the correlation coefficient of Dens Draconis and its adulterant was calculated in training set samples, and 92. 67% was used as the threshold. Totally 10 batches of validation set samples were validated the qualitative analysis model, and the prediction accuracy was 90%. Conclusion:The method has good prediction ability, and can be used in the rapid identification of Dens Draconis and its adulterant.
