Mercury volatile species generation from HCl and TRIS buffer media: Quantification of generation efficiency and characterization of severe changes in speciation information due to de-alkylation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F20%3A43926682" target="_blank" >RIV/60461373:22340/20:43926682 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081715:_____/20:00524165 RIV/00216208:11310/20:10418260

Výsledek na webu

<a href="https://doi.org/10.1016/j.aca.2020.04.058" target="_blank" >https://doi.org/10.1016/j.aca.2020.04.058</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aca.2020.04.058" target="_blank" >10.1016/j.aca.2020.04.058</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mercury volatile species generation from HCl and TRIS buffer media: Quantification of generation efficiency and characterization of severe changes in speciation information due to de-alkylation

Popis výsledku v původním jazyce

Severe changes in speciation information were observed during volatile species generation (VSG) due to de-alkylation of generated Hg species as proven by cryogenic trapping with inductively coupled plasma mass spectrometric detection (CT-ICP-MS). Methyl mercury hydride is de-methylated to Hg0 by 45% and 6%, respectively, in HCl and TRIS buffer media. Ethylmercury hydride is de-ethylated to Hg0 by 71% and 28%, respectively in HCl and TRIS buffer media. Only Hg0 as a volatile product was observed when generating from phenylmercury regardless of the reaction medium employed. These findings limit significantly the application of VSG to Hg speciation analysis, especially the possibility of generation of alkyl-substituted mercury hydrides for cryogenic trapping/separation or gas chromatography. On the contrary, post-column VSG of Hg species prior to spectrometric detection can be employed to enhance sensitivity without any negative effects on accuracy and precision of the results. © 2020 Elsevier B.V.

Název v anglickém jazyce

Mercury volatile species generation from HCl and TRIS buffer media: Quantification of generation efficiency and characterization of severe changes in speciation information due to de-alkylation

Popis výsledku anglicky

Severe changes in speciation information were observed during volatile species generation (VSG) due to de-alkylation of generated Hg species as proven by cryogenic trapping with inductively coupled plasma mass spectrometric detection (CT-ICP-MS). Methyl mercury hydride is de-methylated to Hg0 by 45% and 6%, respectively, in HCl and TRIS buffer media. Ethylmercury hydride is de-ethylated to Hg0 by 71% and 28%, respectively in HCl and TRIS buffer media. Only Hg0 as a volatile product was observed when generating from phenylmercury regardless of the reaction medium employed. These findings limit significantly the application of VSG to Hg speciation analysis, especially the possibility of generation of alkyl-substituted mercury hydrides for cryogenic trapping/separation or gas chromatography. On the contrary, post-column VSG of Hg species prior to spectrometric detection can be employed to enhance sensitivity without any negative effects on accuracy and precision of the results. © 2020 Elsevier B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

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

1873-4324

Svazek periodika

1119

Číslo periodika v rámci svazku

JUL 4 2020

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

68-76

Kód UT WoS článku

000536801900009

EID výsledku v databázi Scopus

2-s2.0-85084179176