Study on the Elements and Element Speciation in the Extract of Rhodiola Saccharinensis

The eight elements,Mg,Fe,Mn,Cr,Cu,Zn, Ni and Co,in Rhodiola saccharinensis were extracted based on traditional analytical Flowchart program and separated into water-soluble state and suspension state by microporous filtering film.Water-soluble state was divided into organic state and inorganic state based on macroporous adsorption resin.The elements were detected by inductively coupled plasma mass-spectrometry(ICP-MS). The veracity of analytical results were validated with CRM's under the same conditions.The results show extractive rates of the elements were in the range of 25.11%～73.59%,and immerse-residue ratio in 0.389～2.86,adsorption ratio of suspension state was in the range 25.87%～62.93%.The ratio of inorganic state of Cu and Zn was higher than inorganic state in water-soluble state.The recoveries of the elements were ranged from 93.96%～106.28% and relative standard deviations were less than 2.66%.