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KMID : 1059519950390090705
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Journal of the Korean Chemical Society
1995 Volume.39 No. 9 p.705 ~ p.714
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A New Analytical Method for the Eu+3 and Tb+3 Ions Using the Luminescence Enhancement by the Treatment of o-Phenanthroline on the Nylon Membrane
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An Seong-Hee
Lee Byung-Min
Park Jong-Mok
Kim Hai-Dong
Jeong Hyuk
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Abstract
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A new analytical luminescence method for the Eu+3 and Tb+3 ions was studied using the luminescence enhancement by the treatment of the o-phenanthroline on the nylon membrane. Compared to the specific emission intensities of the ions in aqueous(or ethanol) solution, if the aqueous ion is spotted on the nylon membrane, the luminescence intensities were extremely enhanced. There was additional enhancement effect of the luminescence intensities of the ions on the nylon membrane, if the ion on the nylon membrane is treated with o-phenanthroline. Based on the luminescence enhancement, the detection limits were lowered by more than 7 order of magnitude compared to that of solution sample, and also lowered by about 1 order of magnitude compared to that of previous TLC method. The dynamic ranges and correlation coefficients of the calibration curves near the detection limit were 2∼3 order and ∼0.99, respectively. It was also shown that the luminescence intensity was in its maximum when the ion on the nylon is treated with ∼4 mole ratio of o-phenanthroline. The energy-transfer mechanism was explained for the theoretical background of the luminescence enhancement.
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