Abstract：A method for the determination of germanium in coal samples by spectrophotometry has been developed. The color reaction of germanium with 2,4-dichlorophenylfluorone(2,4-DClPF) in the presence of cetyltrimethylammonium bromide(CTMAB) has been studied. The results show that Ge(Ⅳ) reacts on 2,4-DClPF and CTMAB to form a multicomponent complex in a 1.8-2.5 mol·L-1 H2SO4 medium. The complex has the maximum absorption wavelength at 516 nm and its apparent molar absorptivity ε is 1.38×105 L·mol-1·cm-1. Beer’s law is obeyed in the range of 0-12.5 μg·(25 mL)-1 for Ge(Ⅳ). The recovery of standard addition is 103%-106% and the relative standard deviation(RSD) is 1.1%-1.7%. This method has been applied to the determination of Ge(Ⅳ) in coal samples with satisfactory results.
赛 音，李 胜，韩福彬. 表面活性剂增敏2,4-二氯苯基荧光酮分光光度法测定煤中的微量锗 [J]. 光谱学与光谱分析, 2004, 24(11): 1404-1406.
SAI Yin, LI Sheng, HAN Fu-bin. Determination of Trace Germanium in Coal by Spectrophotometry with 2,4-Dichlorophenylfluorone. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(11): 1404-1406.
