Original scientific paper

The Effect of Alkaloids on Fluorescence in Solutions

E. Kunec-Vajić ; Department of Pharmacology and Department of Forensic Medicine, Medical Faculty, University of Zagreb, Zagreb, Croatia, Yugoslavia
K. Weber ; Department of Pharmacology and Department of Forensic Medicine, Medical Faculty, University of Zagreb, Zagreb, Croatia, Yugoslavia

Abstract

The quenching of fluorescence of different substances by a
series of alkaloids has ' been studied. The alkaloids generally exert
a quenching action on the fluorescence. In evaluating these effects,
in certain cases it is necessary to take into consideration the absorptii.
on of exciting light by the molecules of the quencher. The quenching
effect of the anions of ailka loid salts should also be taken into account.
By .mathematical corrections of experimental data for the
absorption of the exciting light and the quenching by anions, the
constants and semi-concentrations of quenching are obtained for the
cation:ic part of the alkaloid. It may be assumed that the quenching
effect of alkaloids involves an external static mechanism, i. e. the
formation of molecular compounds between the quencher and the
fluorescent substance.

Keywords

Hrčak ID:

208029

URI

https://hrcak.srce.hr/208029

Publication date:

1.2.1969.

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