Citation: Jun ZHAO, Guo Hu ZHAO, Qi LUO. SPECTROFLUORIMETRIC DETERMINATION OF TERBIUM USING THE SYSTEM OF Tb(Ⅲ)-TPA[J]. Chinese Chemical Letters, ;1996, 7(5): 453-456. shu

SPECTROFLUORIMETRIC DETERMINATION OF TERBIUM USING THE SYSTEM OF Tb(Ⅲ)-TPA

Jun ZHAO ^a ,
Guo Hu ZHAO ^a ,
Qi LUO ^b

Departmert of Basic Courses, Gansu Agricultural University, Lanzhou 730070;
b Bailie Oil School Lanzhou 730070

Received Date: 9 November 1995

Terbium can form a stable binary chelate with terephthalic acid (benzene-1.4-dicarboxylic acid(TPA)) having a ratio of 1:2 in aqueous solution in the pH range of 5~6.The maximum excitation and emission wavelengths are 260 nm and 545 nm for terbium chelate,respectively.The fluorescence intensity of terbium chelate remains stable in 8 h with a relative standard deviation in the range of =4%.The rest or the lanthanide ions and the common foreign ions hardly interfere the determination.
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