CRCU

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (5): 746-749.

• Articles • Previous Articles     Next Articles

Determination of Matrine and Oxymatrine in Radix Sophorae Flavescentis by Resonance Rayleigh Scattering, Second-order Scattering and Frequency Doubling Scattering Technique

SONG Yan-qi1,2, LIU Shao-pu1, LIU Zhong-fang1 and HU Xiao-li1*   

  1. 1. Key Laboratory on Luminescence and Real-time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China;
    2. Chongqing Station, National Water Quality Monitoring Net of City Water Supply, Chongqing 400013, P. R. China
  • Received:2010-12-13 Revised:2011-01-11 Online:2011-09-25 Published:2011-09-06
  • Contact: HU Xiao-li E-mail:xiaolihu@swu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20875078).

PDF (PC)

Abstract: In 0.1 mol/L HCl medium, 12-tungstophosphoric(TP) acid reacted with matrine(Mat) and oxymatrine(Oxy) to form an ion-association complex. As a result, the new spectra of resonance Rayleigh scattering(RRS), second-order scattering(SOS) and frequency doubling scattering(FDS) appeared and their intensities were enhanced greatly. The maximum scattering wavelengths of RRS, SOS and FDS were located at 370, 670 and 390 nm, respectively. The increments of scattering intensity were directly proportional to the concentration of Mat and Oxy in a certain range. Based on this, the method for the determination of matrine and oxymatrine has been established. It has been applied to the determination of matrine and oxymatrine in samples of Radix sophorae flavescentis with satisfactory result. The reaction mechanism and reasons of RRS enhancement were discussed.

Key words: Matrine, Oxymatrine, 12-Tungstophosphoric acid, Resonance Rayleigh scattering, Second-order scattering, Frequency doubling scattering