Size distribution of aerosol particles produced during mining and processing uranium ore

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652052%3A_____%2F16%3AN0000032" target="_blank" >RIV/86652052:_____/16:N0000032 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jenvrad.2016.03.011" target="_blank" >http://dx.doi.org/10.1016/j.jenvrad.2016.03.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jenvrad.2016.03.011" target="_blank" >10.1016/j.jenvrad.2016.03.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Size distribution of aerosol particles produced during mining and processing uranium ore

Popis výsledku v původním jazyce

The aerosol particle size distributions of uranium and its daughter products were studied and determined in the area of the Rožná mine, which is the last active uranium mine in the Czech Republic. A total of 13 samples were collected using cascade impactors from three sites that had the highest expected levels of dust, namely, the forefield, the end of the ore chute and an area close to workers at the crushing plant. The characteristics of most size distributions were very similar; they were moderately bimodal, with a boundary approximately 0.5 mm between the modes. The activity median aerodynamic diameter (AMAD) and geometric standard deviation (GSD) were obtained from the distributions beyond 0.39 mm, whereas the sizes of particles below 0.39 mm were not differentiated. Most AMAD and GSD values in the samples ranged between 3.5 and 10.5 mm and between 2.8 and 5.0, respectively. The geometric means of the AMADs and GSDs from all of the underground sampling sites were 4.2 mm and 4.4, respectively, and the geometric means of the AMADs and GSDs for the crushing plant samplings were 9.8 mm and 3.3, respectively. The weighted arithmetic mean of the AMADs was 4.9 mm, with a standard error of 0.7 mm, according to the numbers of workers at the workplaces. The activity proportion of the radon progeny to 226Ra.

Název v anglickém jazyce

Size distribution of aerosol particles produced during mining and processing uranium ore

Popis výsledku anglicky

The aerosol particle size distributions of uranium and its daughter products were studied and determined in the area of the Rožná mine, which is the last active uranium mine in the Czech Republic. A total of 13 samples were collected using cascade impactors from three sites that had the highest expected levels of dust, namely, the forefield, the end of the ore chute and an area close to workers at the crushing plant. The characteristics of most size distributions were very similar; they were moderately bimodal, with a boundary approximately 0.5 mm between the modes. The activity median aerodynamic diameter (AMAD) and geometric standard deviation (GSD) were obtained from the distributions beyond 0.39 mm, whereas the sizes of particles below 0.39 mm were not differentiated. Most AMAD and GSD values in the samples ranged between 3.5 and 10.5 mm and between 2.8 and 5.0, respectively. The geometric means of the AMADs and GSDs from all of the underground sampling sites were 4.2 mm and 4.4, respectively, and the geometric means of the AMADs and GSDs for the crushing plant samplings were 9.8 mm and 3.3, respectively. The weighted arithmetic mean of the AMADs was 4.9 mm, with a standard error of 0.7 mm, according to the numbers of workers at the workplaces. The activity proportion of the radon progeny to 226Ra.

Druh

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

CEP obor

DL - Jaderné odpady, radioaktivní znečištění a kontrola

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

Journal of Environmental Radioactivity

ISSN

0265-931X

e-ISSN

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Svazek periodika

157

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

5

Strana od-do

97-101

Kód UT WoS článku

000375811700011

EID výsledku v databázi Scopus

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