Gold volatile species atomization and preconcentration in quartz devices for atomic absorption spectrometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081715%3A_____%2F15%3A00440563" target="_blank" >RIV/68081715:_____/15:00440563 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.sab.2014.12.007" target="_blank" >http://dx.doi.org/10.1016/j.sab.2014.12.007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sab.2014.12.007" target="_blank" >10.1016/j.sab.2014.12.007</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gold volatile species atomization and preconcentration in quartz devices for atomic absorption spectrometry

Popis výsledku v původním jazyce

The on-line atomization of gold volatile specieswas studied and the resultswere comparedwith thermodynamic calculations in several quartz atomizers, namely: diffusion flame, flame-in-gas-shield, flame-in-plain-tube, externally heated T-tube and externally heated flame-in-T-tube. Atomization mechanism in the explored devices is proposed, where volatile species are converted to thermodynamically stable AuH at elevated temperature over 500 °C and then atomized by an interaction with a cloud of hydrogen radicals. Because of its inherent simplicity and robustness, diffusion flame was employed as a reference atomizer. It yielded atomization efficiency of 70 to 100% and a very good long time reproducibility of peak area sensitivity: 1.6 to 1.8 s ?g1. Six andeleven times higher sensitivity, respectively, was provided by atomizers with longer light paths in the observation volume, i.e. externally heated T-tube and externally heated flame-in-T-tube. The latter one, offering limit of detection b

Název v anglickém jazyce

Gold volatile species atomization and preconcentration in quartz devices for atomic absorption spectrometry

Popis výsledku anglicky

The on-line atomization of gold volatile specieswas studied and the resultswere comparedwith thermodynamic calculations in several quartz atomizers, namely: diffusion flame, flame-in-gas-shield, flame-in-plain-tube, externally heated T-tube and externally heated flame-in-T-tube. Atomization mechanism in the explored devices is proposed, where volatile species are converted to thermodynamically stable AuH at elevated temperature over 500 °C and then atomized by an interaction with a cloud of hydrogen radicals. Because of its inherent simplicity and robustness, diffusion flame was employed as a reference atomizer. It yielded atomization efficiency of 70 to 100% and a very good long time reproducibility of peak area sensitivity: 1.6 to 1.8 s ?g1. Six andeleven times higher sensitivity, respectively, was provided by atomizers with longer light paths in the observation volume, i.e. externally heated T-tube and externally heated flame-in-T-tube. The latter one, offering limit of detection b

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

<a href="/cs/project/GA14-23532S" target="_blank" >GA14-23532S: Generování a prekoncentrace těkavých sloučenin pro atomovou absorpční a atomovou fluorescenční spektrometrii</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Spectrochimica Acta. B

ISSN

0584-8547

e-ISSN

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Svazek periodika

103-104

Číslo periodika v rámci svazku

January?February

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

155-163

Kód UT WoS článku

000349574200021

EID výsledku v databázi Scopus

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