Abstract：A new spectrophotometric method for the determination of germanium in A. arborescens was developed. The method was based on the fact that germanium forms a stable complex with phenylfluorone in the acidified solution with CTMAB as solubilization agent. The maximum absorption of association complex is at 530 nm, the linear range is 0.1-0.7 μg·mL-1，the regression equation is A=0.081 7+0.867 7c530,(μg·mL-1) the correlation coefficient r=0.917 7, and the limit of detection is 0.65 μg·mL-1. The leaves and stems of A. arborescens were determined by the proposed method. The total amount of germanium is 697.0-1 219.5 ng·g-1, and the content of organic Ge is 95.45%-98.99%. The method is suitable for the analysis of samples which contain both organic Ge and inorganic Ge.
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