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近红外特征谱段相关系数法中特征谱段选择方法的探讨

刘婷, 冯艳春, 宋丹青, 胡昌勤*   

  1. 1. 北京协和医学院, 中国医学科学院 医药生物技术研究所, 北京 100050
    2. 中国药品生物制品检定所, 北京 100050
  • 收稿日期:2010-09-09 修回日期:2010-11-10 出版日期:2011-01-15 发布日期:2011-01-15
  • 通讯作者: 胡昌勤*

Selection of characteristic spectral bands for the analysis by the NIR correlation coefficient method

Ting Liu, Yan-Chun Feng, Dan-Qing Song, Chang-Qin Hu*   

  1. 1. Institute of Medicinal Biotechnology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, China
    2. National Institute for the Control of Pharmaceutical and Biological Products, Beijing 100050, China
  • Received:2010-09-09 Revised:2010-11-10 Online:2011-01-15 Published:2011-01-15
  • Contact: Chang-Qin Hu*

摘要:

借鉴广义二维相关光谱法, 以温度为扰动进行待测化合物的中红外-近红外 (IR-NIR) 二维相关谱分析, 利用IR光谱峰归属明确的特点, 通过IR-NIR光谱的相关分析, 确定NIR光谱中与待测化合物结构关联密切并受干扰程度较小的典型特征波数区域作为NIR特征谱段相关系数法中的特征谱段。据此快速建立的筛查中成药/保健品中非法添加枸橼酸西地那非、他达拉非和盐酸二甲双胍的NIR特征谱段相关系数法的准确性均在90%左右, 可以满足现场快速筛查的需要。

关键词: 二维相关光谱, 近红外光谱, 特征谱段相关系数法, 中药, 非法添加

Abstract:

We analyzed the infrared (IR)-near infrared (NIR) 2D correlation spectra of drugs perturbed by temperature. By identification of functional groups by IR spectrum and by the correlation analysis of IR-NIR spectrum, we identified the characteristic spectral bands that were closely related to the structure of a drug substance of interest. These characteristic spectral bands were relatively less interfered by other ingredients for analysis by the NIR correlation coefficient method. With these characteristic spectral bands, the accuracy of screening illegally added Sildenafil citrate, Tadalafil and Metformin hydrochloride in Chinese patent drugs and healthcare products reached about 90%, which met the requirements of rapid screening.

Key words: Two-dimensional correlation spectroscopy, NIR, Correlation coefficient method by characteristic spectral bands, Chinese patent drug, Illegal additive

中图分类号: 

Supporting:

Foundation item: National Key Technology R & D Program–On-site Rapid Identification of Drug Research Project (Grant No. 2008BAI-55B06).
*Corresponding author. Tel.: 86-10-67095308; fax: 86-10-65115148