A new fluorescence spectrophotometric method has been studied for the determination of trace germanium with phenylfluorone.It is found that at the presence of CTMAB,in the buffer solution of pH=5.1 HAc NaAc,phenylfluo...A new fluorescence spectrophotometric method has been studied for the determination of trace germanium with phenylfluorone.It is found that at the presence of CTMAB,in the buffer solution of pH=5.1 HAc NaAc,phenylfluorone forms micelle complex with germanium.The fluorescence intensity of phenylfluorone was increased.But it was unstable.When acidity of system is up to 0.3mol/L,the fluorescence is stable and the sensitivity is higher.The excitation wavelength and the emission wavelength is 477nm and 525nm respectively.The detecion limits of germanium is up to 0.05μg/L.The range of determination for germanium is 0.2～2.0μg/L.The relative standard variation of 13 determination of 0.5μg/L germanium was 6%.The average recoveries of germanium added to sample were in the range of 95%～110%.The method has applied to the determination of germanium in flyash sample with satisfactory results.展开更多
文摘A new fluorescence spectrophotometric method has been studied for the determination of trace germanium with phenylfluorone.It is found that at the presence of CTMAB,in the buffer solution of pH=5.1 HAc NaAc,phenylfluorone forms micelle complex with germanium.The fluorescence intensity of phenylfluorone was increased.But it was unstable.When acidity of system is up to 0.3mol/L,the fluorescence is stable and the sensitivity is higher.The excitation wavelength and the emission wavelength is 477nm and 525nm respectively.The detecion limits of germanium is up to 0.05μg/L.The range of determination for germanium is 0.2～2.0μg/L.The relative standard variation of 13 determination of 0.5μg/L germanium was 6%.The average recoveries of germanium added to sample were in the range of 95%～110%.The method has applied to the determination of germanium in flyash sample with satisfactory results.
