Spectrofluorimetric determination of Er (III) with diantipyrylmethane.
The optimum fluorescence conditions for erbium (III) are obtained by irradiating this lanthanide at 435 nm in 0.04 microg ml(-1) diantipyrylmethane solution at pH = 8 (lambdaem = 510 nm). The method proposed is satisfactory for the determination of erbium (III) in the range of 0.001 to 1 microg ml(-1). The relative standard deviation 0.02 microg ml(-1) Er (III) in 0.04 microg ml(-1) diantipyrylmethane solution is 1.1%. The effect of other rare earths upon the intensity of the fluorescence emitted by erbium (III) is discussed.
Sungur
S
S
Department of Chemistry Science and Letters Faculty, Istanbul Technical University, Maslak, Turkey. sanasungur@hotmail.com
D004871:Erbium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008697:Methane / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013696:Temperature; D013997:Time Factors
D004871:Erbium; D008697:Methane