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  • Title: [Comparative studies on five pretreatment methods in the determination of elements in plant standard sample by ICP-AES].
    Author: Wu J, Ge Y.
    Journal: Guang Pu Xue Yu Guang Pu Fen Xi; 1999 Jun; 19(3):369-72. PubMed ID: 15819059.
    Abstract:
    Direct determination of the contents of 19 major or trace elements: K, Na, Ca, Mg, Si, Al, Fe, P, Sr, Ti, Mn, Zn, Pb, B, Ba, Cu, Li, V and Ni in plant samples by ICP-AES are reported in this paper. The solution of plant standard sample GBW07603 was prepared by five pretreatment methods: dry-ashing, HNO3 + H2SO4 + HClO4, H2SO4 + H2O, HNO3 + H2SO4 + HClO4 + HF and ashing + NaOH method. Suitable pretreatment methods were found for the determination of the elements by comparing standard deviations and relative errors of the results, thus providing a scientific basis for the selection of suitable pretreatment of chemical element analysis in plants.
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