RARE-EARTH AS FLUORESCENCE PROBE TO DETERMINE 3,4-DIHYDROXYDROXYPHENYLALANINE

Authors
YANG JH ZHAO WD JIE NQ ZOU HB REN XZ
Citation
Jh. Yang et al., RARE-EARTH AS FLUORESCENCE PROBE TO DETERMINE 3,4-DIHYDROXYDROXYPHENYLALANINE, Analytical letters, 26(10), 1993, pp. 2291-2306
Citations number
5
Categorie Soggetti
Chemistry Analytical
Journal title
Analytical letters → ACNP
ISSN journal
00032719
Volume
26
Issue
10
Year of publication
1993
Pages
2291 - 2306
Database
ISI
SICI code
0003-2719(1993)26:10<2291:RAFPTD>2.0.ZU;2-F
Abstract
3, 4-DihydroxYPhenylalanine can complex with Tb (III) at pH 8.0-8.5, w ith emission of the characteristic fluorescence of Tb(III). This metho d can be used for selectively determinating 3,4-dihydroxyphenylalanine in the presence of most amino acids. The experiment showed that the f luorescence intensity is a linear function of 3,4-dihydroxyphenylalani ne concentration in the range of 1.1 X 10(-8)mol/l to 1.0 x 10(-5)mol/ l. The detection limit is 5 x 10(-9)mol/l. The composition ratio of Tb to 3,4-dihydroxyphenylalanine in the complex is 1:1.