Odstranění interference hliníkové matrice při stanovení arzenu na vlnové délce 189 nanometrů technikou elektrotermické atomové absorpční spektrometrie

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F09%3A00007936" target="_blank" >RIV/00216275:25310/09:00007936 - 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

Overcoming Interference From the Alumina Matrix on the Determination of Arsenic at 189 nanometers Using Electrothermal Atomic Absorption Spectrometry

Popis výsledku v původním jazyce

Amethod is described enabling to eliminate the spectral interference from alumina matrix onto As determination at the wavelength 189 nm by electrothermal atomic absorption spectrometry with deuterium background correction. Matrix modification was performed by the addition of ammonium fluoride to protect the formation of aluminium oxide implicated in causing spectral interference and to increase volatility of alumina matrix via the formation of AlF3. Pre-treating of the pyrolytic graphite platform with asolution of rhodium and citric acid has enabled to stabilize the analyte up to temperature of 1300 °C at which most of AlF3 could be removed from the graphite furnace. The application of 2 ug of Rh+20 ug of citric acid + 200 ug of NH4F has enabled an accurate and interference-free determination of As up to 40 ug of Al in the form of AlCl3 as verified by analytical recoveries study and resulted in characteristic mass and LOD value in the original sample 15 pg and 50 ng g-1, respectively

Název v anglickém jazyce

Overcoming Interference From the Alumina Matrix on the Determination of Arsenic at 189 nanometers Using Electrothermal Atomic Absorption Spectrometry

Popis výsledku anglicky

Amethod is described enabling to eliminate the spectral interference from alumina matrix onto As determination at the wavelength 189 nm by electrothermal atomic absorption spectrometry with deuterium background correction. Matrix modification was performed by the addition of ammonium fluoride to protect the formation of aluminium oxide implicated in causing spectral interference and to increase volatility of alumina matrix via the formation of AlF3. Pre-treating of the pyrolytic graphite platform with asolution of rhodium and citric acid has enabled to stabilize the analyte up to temperature of 1300 °C at which most of AlF3 could be removed from the graphite furnace. The application of 2 ug of Rh+20 ug of citric acid + 200 ug of NH4F has enabled an accurate and interference-free determination of As up to 40 ug of Al in the form of AlCl3 as verified by analytical recoveries study and resulted in characteristic mass and LOD value in the original sample 15 pg and 50 ng g-1, respectively

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

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

2009

Kód důvěrnosti údajů

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

Název periodika

Analytica Chimica Acta

ISSN

0003-2670

e-ISSN

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Svazek periodika

634

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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