Chem. J. Chinese Universities ›› 1990, Vol. 11 ›› Issue (7): 689.

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Studies on Chelate Reaction of New Fluorescent Reagent SPAEC with Gallium (Ⅲ) and Its Analytical Application

Li Zhiliang, Yu Ruqin   

  1. Department of Chemistry and Chemical Engineering, Hunan University, Changsha
  • Received:1988-09-26 Online:1990-07-24 Published:1990-07-24

Abstract: Anew fluorescent analytical reagent 2-(5'-sulfo-2'-hydroxyl-1'-phenylazo)-5-ethy-lamino-4-cresol(SPAEC), which has been synthesized recently in our laboratory, was applied to the fluorimetric determination of gallium. The optimal conditions for fluorescent complex formation of SPAECwith gallium ( M ) were established. At pH 3. 8-5. 5, a 1 : 1 type complex was formed with λexem of 515/585 nm and with quantum yield (φF) of 0. 046. The proposed method was used for the determination of 2 × 10-7~2 × 10-6 mol/Lgallium in semiconductor and alloy samples with good results.

Key words: Fluorescent reagent SPAEC, Fluorimetry, Determination of gallium

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