Effects of acid, sodium and its salt counterions on the atomic emission of copper and zinc in plasma pencil

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00113258" target="_blank" >RIV/00216224:14310/19:00113258 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2019/JA/C9JA00312F#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2019/JA/C9JA00312F#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c9ja00312f" target="_blank" >10.1039/c9ja00312f</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of acid, sodium and its salt counterions on the atomic emission of copper and zinc in plasma pencil

Popis výsledku v původním jazyce

Copper, zinc and sodium atomic line emissions in the plasma of a pencil discharge under the influence of easily ionizable elements (EIE), counterions and nitric acid were studied. These elements were introduced as the water solutions of nitrates and sulfates using an ICP-adopted nebulization system. The plasma pencil as a radiation source was operated in argon at 4 L min(-1) powered by a 13.56 MHz generator at 140 W. The most intense depressing effect on the atomic emission of zinc (down to 15% of the unaffected intensity) and copper (down to 35%) appeared with sulfates. A lower effect was observed with chlorides (down to 70% for Zn and 30% for Cu) and the lowest effect was observed with nitrates, which increased the value for Zn by up to 40% and decreased that for Cu to about 50%. Nitric acid has a certain depression effect down to further 50% with salts, 80% for Cu, and 65% for Zn without salts; it also had a stabilization effect, partially compensating for the depression (double intensity for Cu with NaCl and HNO3 against sole NaCl) by anions and EIE. A combination of nitric acid with an added excess amount of an EIE salt could then provide predictable intensities. Sodium is a representative of EIE and it is a constituent of the introduced nitrate and sulfate salts. The sodium intensity dramatically decreased in the presence of sulfates, which might be a consequence of the reactions and energy exchange with the sulfur species in the plasma.

Název v anglickém jazyce

Effects of acid, sodium and its salt counterions on the atomic emission of copper and zinc in plasma pencil

Popis výsledku anglicky

Copper, zinc and sodium atomic line emissions in the plasma of a pencil discharge under the influence of easily ionizable elements (EIE), counterions and nitric acid were studied. These elements were introduced as the water solutions of nitrates and sulfates using an ICP-adopted nebulization system. The plasma pencil as a radiation source was operated in argon at 4 L min(-1) powered by a 13.56 MHz generator at 140 W. The most intense depressing effect on the atomic emission of zinc (down to 15% of the unaffected intensity) and copper (down to 35%) appeared with sulfates. A lower effect was observed with chlorides (down to 70% for Zn and 30% for Cu) and the lowest effect was observed with nitrates, which increased the value for Zn by up to 40% and decreased that for Cu to about 50%. Nitric acid has a certain depression effect down to further 50% with salts, 80% for Cu, and 65% for Zn without salts; it also had a stabilization effect, partially compensating for the depression (double intensity for Cu with NaCl and HNO3 against sole NaCl) by anions and EIE. A combination of nitric acid with an added excess amount of an EIE salt could then provide predictable intensities. Sodium is a representative of EIE and it is a constituent of the introduced nitrate and sulfate salts. The sodium intensity dramatically decreased in the presence of sulfates, which might be a consequence of the reactions and energy exchange with the sulfur species in the plasma.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

<a href="/cs/project/ED2.1.00%2F03.0086" target="_blank" >ED2.1.00/03.0086: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of analytical atomic spectrometry

ISSN

0267-9477

e-ISSN

1364-5544

Svazek periodika

34

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

2451-2458

Kód UT WoS článku

000501803000009

EID výsledku v databázi Scopus

2-s2.0-85075808237