Publication detail
IMPROVED FLUORIMETRIC DETERMINATION OF Al, Ga AND In BY MICELLE ENHANCED 8-HYDROXYQUINOLINE -5-SULPHONIC ACID COMPLEX
VOJTA, Š. SOMMER, L.
Original Title
IMPROVED FLUORIMETRIC DETERMINATION OF Al, Ga AND In BY MICELLE ENHANCED 8-HYDROXYQUINOLINE -5-SULPHONIC ACID COMPLEX
Type
presentation
Language
English
Original Abstract
The enhancement (sensitization) of fluorescent reactions of metal ions with chelating dyes by the presence of surfactants provides an inexpensive alternative to fluorimetric methods, when determination of lower concentrations of elements is required. The complexes formed in micellar media are often characterized by high molar absorptivities, high stability over a wide pH range, and usually by large bathochromic shift caused by addition of surfactants to the binary complex formed in water. Moreover, some fluorescent binary chelates may dramatically increase their quantum yield in micellar media, providing exceptionally sensitive fluorimetric methods. The 8-hydroxyquinoline-5-sulphonic acid (QSA) should provide surfactant-sensitized reactions with Al(III), Ga(III) and In(III), because it is strong acid readily yielding a negatively charged group (sulphonate) to interact with the positive head of cationic surfactants. The importance of monitoring aluminium concentrations in the blood of patients undergoing haemodialysis has been realised because of the suspicion that aluminium intoxication is responsible for encephalopathy, oesteopathy and Alzheimer's disease. In this work, the influence of various surfactants on the reaction of QSA with Al, Ga and In is studied in details. Improved method of determination of Al, Ga, In by QSA in presence of cationic surfactant Zephyramine is brought and optimized.
Keywords
Fluorimetry, Aluminium, Gallium, Indium, Determination, 8-hydroxyquinoline-5-sulphonic acid, Tenzide
Authors
VOJTA, Š.; SOMMER, L.
Released
24. 10. 2006
Publisher
Vysoké učení technické v Brně, Fakulta chemická
Location
Brno, Czech Republic
ISBN
80-214-3321-3
Book
Sborník příspěvků soutěže Studentské tvůrčí činnosti „STUDENT 2006” a doktorské soutěže „O cenu děkana 2005 a 2006”
Edition
Sborník příspěvků
Edition number
1
Pages from
243
Pages to
248
Pages count
6
URL
BibTex
@misc{BUT63717,
author="Šimon {Vojta} and Lumír {Sommer}",
title="IMPROVED FLUORIMETRIC DETERMINATION OF Al, Ga AND In BY MICELLE ENHANCED 8-HYDROXYQUINOLINE -5-SULPHONIC ACID COMPLEX",
booktitle="Sborník příspěvků soutěže Studentské tvůrčí činnosti „STUDENT 2006” a doktorské soutěže „O cenu děkana 2005 a 2006”",
year="2006",
series="Sborník příspěvků",
edition="1",
pages="243--248",
publisher="Vysoké učení technické v Brně, Fakulta chemická",
address="Brno, Czech Republic",
isbn="80-214-3321-3",
url="http://www.fch.vutbr.cz",
note="presentation"
}