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

conference paper

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

http://www.fch.vutbr.cz

BibTex

@inproceedings{BUT28397,
  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",
  number="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"
}