RAPID DETERMINATION OF GROSS ALPHA/BETA ACTIVITY IN MILK USING LIQUID SCINTILATION COUNTER TECHNIQUE

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG45__%2F16%3A00532684" target="_blank" >RIV/60162694:G45__/16:00532684 - isvavai.cz</a>

Výsledek na webu

<a href="http://vavtest.unob.cz/registr" target="_blank" >http://vavtest.unob.cz/registr</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2298/NTRP1602179S" target="_blank" >10.2298/NTRP1602179S</a>

Jazyk výsledku

angličtina

Název v původním jazyce

RAPID DETERMINATION OF GROSS ALPHA/BETA ACTIVITY IN MILK USING LIQUID SCINTILATION COUNTER TECHNIQUE

Popis výsledku v původním jazyce

Rapid determination of gross alpha and beta emitters in milk by liquid scintillation counter is discussed. This method is based on direct addition of different types of milk into scintillation cocktail and therefore it is very promising for fast determination of alpha/beta activity due to direct alpha and beta separation, measurement in close 4p geometry and without sample treatment. The selected group of radionuclides was chosen with the respect to military significance, radio-toxicity, and possibility of potential misuse. As model radionuclides 241Am,239Pu, and 90Sr were selected. The Liquid Scintilation Counter Hidex 300 SL equipped with triple-double-coincidence-ratio technique was used for sample measurement. The aim of the work was focused on comparison of different cocktails produced by Hidex and Perkin Elmer, choosing the best cocktail based on our measurement results and adjustment of its appropriate volume. Furthermore, the optimization of ratio between the volume of scintillation cocktail and the volume of milk was investigated with the respect to the model radionuclides. According to the obtained results, the efficiency for alpha emitters was greater than 85 % and for beta, greater than 95 %. The obtained results allowed this method to be used for rapid determination of gross alpha/beta activity in cases where time is an essence, such as first responders or mass-scale samples, where ordinary means suffer from lack of capacity or simply collapse under the on slaught.

Název v anglickém jazyce

RAPID DETERMINATION OF GROSS ALPHA/BETA ACTIVITY IN MILK USING LIQUID SCINTILATION COUNTER TECHNIQUE

Popis výsledku anglicky

Rapid determination of gross alpha and beta emitters in milk by liquid scintillation counter is discussed. This method is based on direct addition of different types of milk into scintillation cocktail and therefore it is very promising for fast determination of alpha/beta activity due to direct alpha and beta separation, measurement in close 4p geometry and without sample treatment. The selected group of radionuclides was chosen with the respect to military significance, radio-toxicity, and possibility of potential misuse. As model radionuclides 241Am,239Pu, and 90Sr were selected. The Liquid Scintilation Counter Hidex 300 SL equipped with triple-double-coincidence-ratio technique was used for sample measurement. The aim of the work was focused on comparison of different cocktails produced by Hidex and Perkin Elmer, choosing the best cocktail based on our measurement results and adjustment of its appropriate volume. Furthermore, the optimization of ratio between the volume of scintillation cocktail and the volume of milk was investigated with the respect to the model radionuclides. According to the obtained results, the efficiency for alpha emitters was greater than 85 % and for beta, greater than 95 %. The obtained results allowed this method to be used for rapid determination of gross alpha/beta activity in cases where time is an essence, such as first responders or mass-scale samples, where ordinary means suffer from lack of capacity or simply collapse under the on slaught.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CH - Jaderná a kvantová chemie, fotochemie

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Nuclear Technology & Radiation Protection

ISSN

1451-3994

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CS - Srbsko a Černá Hora

Počet stran výsledku

5

Strana od-do

179-183

Kód UT WoS článku

000380299100010

EID výsledku v databázi Scopus

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