Spectrofluorimetric Determination of Oxalate Based on Its Ternary Complex between Eu 3+ and Thenoyltrifluoroacetone

Bulletin of the Korean chemical society

Ki Won Cha¹  Hua Zi Huang¹  Hyun Cheol Choi¹ 

关键词: Oxalate;    Eu3+;    Thenoyltrifluoroacetone (TTA);    Fluorescence;    Enhancement;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A simple, sensitive and selective determination method of oxalate has been investigated based on the fluorescence enhancement of Eu3+ -TTA complex due to the formation of Eu³⁺ -TTA-oxalate ternary complex. An emission peak of Eu³⁺ -TTA, which is increased linearly with addition of oxalate, occurs at 610 nm in aqueous solution with excitation at 306 nm. The linear range of the calibration curve is 1 �?10^-6 -8 �?10^-6 M and the detection limit is 1 �?10^-6 M. The effects of foreign ions were studied. The present method was applied to determine oxalate of two synthetic samples.

【 授权许可】

Unknown