Fluorimetry determination of trace Ce 3+ with EDTP

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 56; no. 10; pp. 1925 - 1928
• Main Authors: Meng, Jian-Xin, Wu, He-Jun, Feng, De-Xiong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2000
• Subjects: Cerium(III); Ethylenediaminetetrakis(methylphosphonic) acid; Fluorimetry; Ethylenediaminetetrakis(methylphosphonic) acid; Fluorimetry; Cerium(III)
• ISSN: 1386-1425
• DOI: 10.1016/S1386-1425(00)00251-1

The use of ethylenediaminetetrakis(methylphosphonic) acid (EDTP) in the fluorimetry determination of trace amounts of Ce 3+ ions is described. The fluorescence intensity of Ce 3+ was greatly enhanced when an 1:1 complex with EDTP in solution of pH 7–8 formed. The apparent excitation and emission wavelength used were 313 and 397 nm, respectively. The fluorescence intensity varied linearly with the concentration of Ce 3+ in the range of 1×10 −8–1×10 −4 mol l −1. The quenching effects of coexist ions (other rare earth ions, Fe 3+ and some inorganic anions) were studied. This technique has unique advantage in eliminating disturb of coexist.