Fluorimetry of Selected Elements and Substances in Complex and Micellar Media

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F08%3APU83585" target="_blank" >RIV/00216305:26310/08:PU83585 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Fluorimetry of Selected Elements and Substances in Complex and Micellar Media

Popis výsledku v původním jazyce

The collinear fluorescence spectra appear for complexes with 8-Hydroxyquinoline-5-sulphonic acid (QSA) with max 495 nm for Al, 504 nm for Ga and In in dependence on pH. The fluorescence is highly increased in the presence of submicellar concentration ofcationic surfactants, especially Zephyramine. The stoichiometry of the components in the complexes is M:L = 1:1 - 1:3 in the absence of surfactant and M:L = 1:3 in the presence of cationic surfactant. The optimal concentration range for the determinationof Al, Ga and In is 0.03 1 g.L-1, the detection limits 0.03-0.04 g.L-1 in the presence or absence of surfactant for normal and first derivative spectra. Fe3+, fluoride, phosphate and excess of nitrate and bromide interfere in the absence and presence ofZephyramine. The first derivative spectra for pH 3, 8 and 4 with max 460 nm for Al, 472 nm for Ga and 478 nm for In do not bring advantages. For the determination of Al, Ga, and In at pH 4, 3, and 8 in the presence of MES or tetraborate

Název v anglickém jazyce

Fluorimetry of Selected Elements and Substances in Complex and Micellar Media

Popis výsledku anglicky

The collinear fluorescence spectra appear for complexes with 8-Hydroxyquinoline-5-sulphonic acid (QSA) with max 495 nm for Al, 504 nm for Ga and In in dependence on pH. The fluorescence is highly increased in the presence of submicellar concentration ofcationic surfactants, especially Zephyramine. The stoichiometry of the components in the complexes is M:L = 1:1 - 1:3 in the absence of surfactant and M:L = 1:3 in the presence of cationic surfactant. The optimal concentration range for the determinationof Al, Ga and In is 0.03 1 g.L-1, the detection limits 0.03-0.04 g.L-1 in the presence or absence of surfactant for normal and first derivative spectra. Fe3+, fluoride, phosphate and excess of nitrate and bromide interfere in the absence and presence ofZephyramine. The first derivative spectra for pH 3, 8 and 4 with max 460 nm for Al, 472 nm for Ga and 478 nm for In do not bring advantages. For the determination of Al, Ga, and In at pH 4, 3, and 8 in the presence of MES or tetraborate

Druh

O - Ostatní výsledky

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů