Tellurium determination by three modes of instrumental neutron activation analysis in aerosol filters and trap solutions for the simulation of a severe nuclear accident

Kód výsledku v IS VaVaI

RIV/61389005:_____/20:00534030 - isvavai.cz

Výsledek na webu

https://doi.org/10.1016/j.microc.2020.105139

DOI - Digital Object Identifier

10.1016/j.microc.2020.105139

Jazyk výsledku

angličtina

Název v původním jazyce

Tellurium determination by three modes of instrumental neutron activation analysis in aerosol filters and trap solutions for the simulation of a severe nuclear accident

Popis výsledku v původním jazyce

Tellurium belongs to the elements not frequently determined by neutron activation analysis (NAA) or other analytical methods. We present results of a new methodological study using three independent modes of instrumental NAA (INAA) using the Te-123m, Te-131 and T-131 radionuclides. We compare the results obtained in terms of accuracy, precision and limits of detection (LOD). We utilized the INAA procedures tested for the tellurium determination in aerosol filters and trap solutions in a model experiment aimed at reducing the knowledge gap concerning the behaviour of Te-132, a radiologically significant fission product, which constitutes a considerable health risk towards the public in case of its release in a severe nuclear power plant accident. We found that the nuclear reaction Te-130(n,gamma)Te-131 and gamma-ray spectrometric measurement of I-131, a descendant of Te-131, is the most sensitive way of Te determination by INAA providing as low LOD values as 0.15 mu g of Te in the Teflon aerosol filters and 0.22 mu g mL(-1) in the 0.1 M NaOH trap solutions. The three independent INAA modes allowed employing the self-verification principle of INAA for increasing the trustworthiness of our results. Finally, we also point to the indispensable role of the non-destructive feature of INAA for assay of samples, such as Teflon aerosol filters, that are difficult to be analysed by other analytical methods requiring complete sample destruction without analyte losses.

Název v anglickém jazyce

Tellurium determination by three modes of instrumental neutron activation analysis in aerosol filters and trap solutions for the simulation of a severe nuclear accident

Popis výsledku anglicky

Tellurium belongs to the elements not frequently determined by neutron activation analysis (NAA) or other analytical methods. We present results of a new methodological study using three independent modes of instrumental NAA (INAA) using the Te-123m, Te-131 and T-131 radionuclides. We compare the results obtained in terms of accuracy, precision and limits of detection (LOD). We utilized the INAA procedures tested for the tellurium determination in aerosol filters and trap solutions in a model experiment aimed at reducing the knowledge gap concerning the behaviour of Te-132, a radiologically significant fission product, which constitutes a considerable health risk towards the public in case of its release in a severe nuclear power plant accident. We found that the nuclear reaction Te-130(n,gamma)Te-131 and gamma-ray spectrometric measurement of I-131, a descendant of Te-131, is the most sensitive way of Te determination by INAA providing as low LOD values as 0.15 mu g of Te in the Teflon aerosol filters and 0.22 mu g mL(-1) in the 0.1 M NaOH trap solutions. The three independent INAA modes allowed employing the self-verification principle of INAA for increasing the trustworthiness of our results. Finally, we also point to the indispensable role of the non-destructive feature of INAA for assay of samples, such as Teflon aerosol filters, that are difficult to be analysed by other analytical methods requiring complete sample destruction without analyte losses.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

LM2015056: Centrum urychlovačů a jaderných analytických metod

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

Microchemical Journal

ISSN

0026-265X

e-ISSN

—

Svazek periodika

158

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

105139

Kód UT WoS článku

000573292100005

EID výsledku v databázi Scopus

2-s2.0-85086397021