Rapid multi-elemental analysis on four precious Tibetan medicines based on LIBS technique.
- Author:
Xiao-na LIU
;
Xin-yuan SHI
;
Shuai-yun JIA
;
Na ZHAO
;
Zhi-sheng WU
;
Yan-jiang QIAO
- Publication Type:Journal Article
- MeSH:
Calcium;
analysis;
Copper;
analysis;
Iron;
analysis;
Lasers;
Medicine, Tibetan Traditional;
Mercury;
analysis;
Silver;
analysis;
Spectrum Analysis;
methods
- From:
China Journal of Chinese Materia Medica
2015;40(11):2239-2243
- CountryChina
- Language:Chinese
-
Abstract:
The laser-induced breakdown spectroscopy (LIBS) was applied to perform a qualitative elementary analysis on four precious Tibetan medicines, i. e. Renqing Mangjue, Renqing Changjue, 25-herb coral pills and 25-herb pearl pills. The specific spectra of the four Tibetan medicines were established. In the experiment, Nd: YAG and 1 064 nm-baseband pulse laser were adopted to collect the spectra. A laser beam focused on the surface of the samples to generate plasma. Its spectral signal was detected by using spectrograph. Based on the National Institute of Standard and Technology (NIST) database, LIBS spectral lines were indentified. The four Tibetan medicines mainly included Ca, Na, K, Mg and other elements and C-N molecular band. Specifically, Fe was detected in Renqing Changjue and 25-herb pearl pills; heavy mental elements Hg and Cu were shown in Renqing Mangjue and Renqing Changjue; Ag was found in Renqing Changjue. The results demonstrated that LIBS is a reliable and rapid multi-element analysis on the four Tibetan medicines. With Real-time, rapid and nondestructive advantages, LIBS has a wide application prospect in the element analysis on ethnic medicines.
