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《Physical Testing and Chemical Analysis Partb Chemical Analgsis》 2001-12
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DETERMINATION OF MICROAMOUNTS OF GERMANIUM IN BIOLOGICAL SAMPLES BY GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY

BAO Chang li, LIAN Hong zhou, CHEN Bo, LI Ye (Department of Chemistry, Changchun University of Science and Technology, Changchun, 130026, China) LIU Ya jie (Jilin Biological Research Institude)  
A GF AAS method for the determination of microamounts of germanium in biological samples is described in this paper. The graphite tube used is treated by impregnation in ammonium molybdate solution, and nickel nitrate is used as matrix modifier. Microamounts of germanium in various kinds of biological sample is separated and preconcentrated by extraction of its complex with phenylfluorone by CCl 4. After phase separation, the germanium complex in the CCl 4 phase is counter extraced by N,N′ dimethyl formamide (DMF). When the solution becomes clear, the CCl 4 layer is separated, and the germanium in the DMF solution is determined by GF AAS under the optimum working conditions.
【CateGory Index】: O657.31
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