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HERO ID
533112
Reference Type
Journal Article
Title
Synthesis and Application of 1-(8-quinoline)-3-(pyridyl)-triazene
Author(s)
Wang, C; Feng, F; Chen, ZZ; Lu, Z; Bai, YF; Meng, SM; Lin, S
Year
2008
Is Peer Reviewed?
1
Journal
Gaodeng Xuexiao Huaxue Xuebao / Chemical Journal of Chinese Universities
ISSN:
0251-0790
Volume
29
Issue
6
Page Numbers
1133-1136
Language
Chinese
Abstract
Through combinination of 8-aminoquinoline with pydine through triazene group, a new fluorescent reagent 1-(8-quinoline)-3-(pyridyl)-triazene(QPyT) was synthesized. The product was confirmed by means of elemental analysis, H-1 NMR and infrared spectra. Its excitation and emission wavelengths were 216 nm and 343 nm in a basic medium, respectively. This new reagent reacted with Pb( H) in a slightly basic medium to form a 1: 1 complex, by which lead ion caused the fluorescence quenching of the new fluorescent reagent. The possible response mechanism of QPyT to Pb(II) was discussed. The reaction showed a high selectivity and a high sensitivity for Pb(II). The new fluorescent reagent was used to determined trace Pb(II). The optimum analytical conditions for Pb(II) assay were established. Under these conditions, the linear range of Pb(II) was from 1.6 x 10(-7) to 1.2 x 10(-5) mol/L, with a detection limit 9.0 x 10 mol/L. The method is selective, sensitive and simple. It was used for the determination of trace Pb (II) in water sample with satisfactory results.
Keywords
1-(8-quinoline)-3-(pyridyl)-triazene; detection of lead; fluorescence; quenching; fluorescence; 8-aminoquinoline; copper(ii); complexes; system
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