Open AccessSpectrofluorimetric Determination of Trace Amounts of Europium(III) Ion with Lutetium(III)-Sparfloxacin-Sodium Dodecyl Sulfate Luminescence Enhancement System
Author(s) -
Lei Wang
Publication year - 2004
Publication title -
analytical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 73
eISSN - 1348-2246
pISSN - 0910-6340
DOI - 10.2116/analsci.20.1237
Subject(s) - europium , chemistry , lutetium , sodium dodecyl sulfate , luminescence , detection limit , sulfate , sparfloxacin , inorganic chemistry , fluorescence , sodium , fluorescence spectrometry , nuclear chemistry , trace amounts , analytical chemistry (journal) , ion , chromatography , organic chemistry , yttrium , alternative medicine , pathology , oxide , ofloxacin , physics , biochemistry , optoelectronics , antibiotics , quantum mechanics , ciprofloxacin , medicine
A new luminescence-enhancement system based on complex formation between europium and sparfloxacin in the presence of lutetium in a sodium dodecyl sulfate solution has been discovered. By adding a suitable amount of Lu3+ to the Eu-sparfloxacin-sodium dodecyl sulfate system, the luminescence can be enhanced by approximately 5-fold compared with that of the system without Lu3+. Under the optimum conditions, the luminescence intensity of the system is a linear function of the concentration of europium in the range of 1.0 x 10(-10) - 5.0 x 10(-7) mol L(-1). The detection limit of europium is 2.0 x 10(-13) mol L(-1) (S/N = 3). The system was used for the determination of trace amounts of europium in rare earth samples with satisfactory results.