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Discrimination of Geographic Origin by Trace Elements Contents in Rehmannia Radix Preparat using X-ray Fluorescence Analysis
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 Title & Authors
Discrimination of Geographic Origin by Trace Elements Contents in Rehmannia Radix Preparat using X-ray Fluorescence Analysis
Bae, Hey-Ree; Lee, Si-Kyung; Whang, In-Jae; Kang, Jeong-Mi; Lee, Jin-Ho; Kim, Jeong-Han;
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Dried Rehmannia Radix Preparat, produced in different geographic origins of Korea and China, were investigated for the trace element contents using X-ray fluorescence spectrometry. When the estimated data for 35 kind of elements including K, P, S, Cl, Si, Al, Fe, Sn, etc on 143 samples were analyzed by canonical discrimination technique, the average classification correct rate was 92.3% and the significance was less than 0.0001. In case of reducing the number of elements for statistic analysis from 35 to 8 and to 3, the correct rates were also reduced to 88.1% and to 84.6%. The correct rate for Chinese samples ranged from 94.6-96.0%, while those for Korean ranged from 72.5-89.9%.
discrimination;geographic origin;Rehmannia Radix Preparat;XRF;
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