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Characterization of hypoglycemiant plants by total reflection X-ray fluorescence spectrometry
Orghêda L A D Zucchi1, Silvana Moreira, Edgar F O de Jesus
1Faculdade de Ciências Farmacêuticas de Ribeirao Preto, Depto. Física e Química, Universidade de Sao Paulo, Ribeirao Preto, Brasil. olzucchi@fcfrp.usp.br
Abstract:
In this work, synchrotron radiation total reflection X-ray fluorescence spectrometry (SRTXRF) was used to determine trace elements in eight hypoglycemiant plants (Trigonella foenum graecum, Panax ginseng, Pfaffia paniculata, Myrcia speciosa, Zea mays, Harpagophytum procumbens, Syzygium jambolona, and Bauhinia forficate). The elements P, K, Ca, Ti, Mn, Fe, Cu, Zn, Rb, and Sr were detected in all medicinal plants investigated, whereas Si, S, Sc, V, Cr, Co, Ni, Se, Nb, Mo, Sn, Sb, Ba, Hg, and Pb were detected only in some of the samples. The concentration of elements in hypoglycemiant plants varied from 0.15 microg/g of Co to 3.0 x 10(4) microg/g of K and the mean of experimental limit of detection for these elements were 0.14 and 3.6 microg/g, respectively.
