真伪半夏二维相关红外光谱法的鉴别研究

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Abstract Standard BanXia (Pinellia ternata (Thumb.) Breit) and false Shui BanXia (Typhonium flagelliforme (Lodd.) Blume) were identified fast and nondestructively by Fourier Transform Infrared Spectroscopy (FTIR) combined with two-dimensional correlation spectroscopy (2D) in this paper. The two kinds of BanXia wree similar to each other in one-dimensional IR spectra but quite different in 2D FTIR spectra. In the range between 1 220 cm^-1 and 1 700 cm^-1, one strong autopeak was aroused by BanXia around 1 410 cm^-1 in synchronous spectrum, whereas three autopeaks not only at 1 460 cm^-1 but also at 1 540 cm^-1 and 1 680 cm^-1 aroused by Shui BanXia. Also in the range between 940 cm^-1 and 1 220 cm^-1, three autopeaks were shown at 980, 1 080 and 1 150 cm^-1 in synchronous spectrum of BanXia, but only two autopeaks at 1080 and 1 150 cm^-1 in synchronous spectrum of Shui BanXia. It is proved that the 2D FTIR could serve in distinguishing standard and false medicinal herbs due to its unique advantages such as enhanced resolution and increased identification ability. Therefore, the rapidity and accuracy of 2D FTIR spectroscopy make it a powerful and new approach to evaluating the medicinal herbs.

Key words：Two-dimensional infrared correlation spectroscopy (2D FTIR);BanXia [Pinellia ternate (Thunb.) Breit];Shui BanXia [Typhonium flagelliforme (Lodd.) Blume];Standard and false identification

Received: 2002-03-26 Accepted: 2002-08-28

ZTFLH:

O657.33

Corresponding Authors: SUN Su-qin

Cite this article:

SUN Su-qin,ZHOU Qun,LIU Jun, et al. Study on the Identification of Standard and False BanXia by Two-Dimensional Infrared Correlation Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(04): 427-430.

URL:

http://www.gpxygpfx.com/EN/Y2004/V24/I04/427

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