Selected Ion Flow Tube Mass Spectrometry as a Tool to Understand Hydride Atomization and the Fate of Free Analyte Atoms in an Externally Heated Quartz Tube Atomizer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F22%3A00562522" target="_blank" >RIV/61388955:_____/22:00562522 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081715:_____/22:00562522 RIV/00216208:11320/22:10456755

Výsledek na webu

<a href="https://hdl.handle.net/11104/0334843" target="_blank" >https://hdl.handle.net/11104/0334843</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.analchem.2c02682" target="_blank" >10.1021/acs.analchem.2c02682</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Selected Ion Flow Tube Mass Spectrometry as a Tool to Understand Hydride Atomization and the Fate of Free Analyte Atoms in an Externally Heated Quartz Tube Atomizer

Popis výsledku v původním jazyce

Hydride atomization and the fate of free analyte atoms in an externally heated quartz tube atomizer (QTA) were investigated employing selected ion flow tube mass spectrometry (SIFT-MS). SIFT-MS proved to be ideally suited to study water concentration in gases leaving the atomizer. This made it possible to quantify the oxygen ´´contaminant´´ flow rate to QTA as 0.04-0.05 mL min(-1). This is valid for typical conditions of hydride generation. Most significantly, studies of temperature influence on water concentration resulted in detailed insight into hydrogen radical-forming reactions between oxygen and hydrogen. Minimum QTA temperatures required to generate hydrogen radicals under a variety of different flow rates and compositions of the QTA atmosphere were found to be in the range between 585 and 800 degrees C. The ability of SIFT-MS to detect extremely low concentrations of arsane and selane was employed to quantify the fraction of As and Se removed from the QTA in the form of hydride in dependence on QTA temperature under typical conditions of hydride generation. It was found that free As atoms formed by atomization of arsane decay to different species than to arsane. In the case of selane under typical atomization conditions, the efficiency of the decay of free Se atoms to selane was between 50 and 100% in dependence on actual flow rates and compositions of the QTA atmosphere.

Název v anglickém jazyce

Selected Ion Flow Tube Mass Spectrometry as a Tool to Understand Hydride Atomization and the Fate of Free Analyte Atoms in an Externally Heated Quartz Tube Atomizer

Popis výsledku anglicky

Hydride atomization and the fate of free analyte atoms in an externally heated quartz tube atomizer (QTA) were investigated employing selected ion flow tube mass spectrometry (SIFT-MS). SIFT-MS proved to be ideally suited to study water concentration in gases leaving the atomizer. This made it possible to quantify the oxygen ´´contaminant´´ flow rate to QTA as 0.04-0.05 mL min(-1). This is valid for typical conditions of hydride generation. Most significantly, studies of temperature influence on water concentration resulted in detailed insight into hydrogen radical-forming reactions between oxygen and hydrogen. Minimum QTA temperatures required to generate hydrogen radicals under a variety of different flow rates and compositions of the QTA atmosphere were found to be in the range between 585 and 800 degrees C. The ability of SIFT-MS to detect extremely low concentrations of arsane and selane was employed to quantify the fraction of As and Se removed from the QTA in the form of hydride in dependence on QTA temperature under typical conditions of hydride generation. It was found that free As atoms formed by atomization of arsane decay to different species than to arsane. In the case of selane under typical atomization conditions, the efficiency of the decay of free Se atoms to selane was between 50 and 100% in dependence on actual flow rates and compositions of the QTA atmosphere.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA21-25486S" target="_blank" >GA21-25486S: Hmotnostní spektrometrie v proudové a driftové trubici s vybranými ionty s negativními ionty a dusíkem jako nosným plynem</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Analytical Chemistry

ISSN

0003-2700

e-ISSN

1520-6882

Svazek periodika

94

Číslo periodika v rámci svazku

38

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

13163-13170

Kód UT WoS článku

000862021000001

EID výsledku v databázi Scopus

2-s2.0-85138835010