Unveiling the extreme environmental radioactivity of cryoconite from a Norwegian glacier

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985904%3A_____%2F22%3A00553582" target="_blank" >RIV/67985904:_____/22:00553582 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61988987:17310/22:A2302EE5

Výsledek na webu

<a href="https://asep.lib.cas.cz/arl-cav/cs/csg/?repo=crepo1&key=56243303076" target="_blank" >https://asep.lib.cas.cz/arl-cav/cs/csg/?repo=crepo1&key=56243303076</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2021.152656" target="_blank" >10.1016/j.scitotenv.2021.152656</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unveiling the extreme environmental radioactivity of cryoconite from a Norwegian glacier

Popis výsledku v původním jazyce

This study is a first survey of the occurrence of artificial (Cs-137, Am-241, Bi-207, Pu isotopes) and natural (Pb-210, Ac-228, Bi-214, K-40) radionuclides in Norwegian cryoconitc. Cryoconitc samples were collected before (12 samples) and after (5 samples) a rainfall event, after which 7 cryoconitc holes dissapeared. The concentrations of radionuclides in cryoconite samples from the Blaisen Glacier arc compared with data from the Arctic and Alpine glaciers. Cryoconitc samples from the studied glacier had extremely high activity concentrations of Cs-137, Am-241, Bi-207 and 239+240PU (up to 25,000 Bq/kg, 58 Bq/kg, 13 Bq/ks and 131 Bq/kg, respectively) and also high concentrations of organic matter (OM), comparing to other Scandinavian and Arctic glaciers, reaching up to similar to 40% of total mass. The outstandingly high concentrations of (CS)-C-137, Am-241, Pu isotopes, and Bi-201 on the Bltisen Glacier are primarily related to bioaccumulation of radionuclides in organic-rich cryoconite and might be enhanced by additional transfers of contamination from the tundra by lemmings during their population peaks. The presumed influence of intense rainfall on radionuclide concentrations in the cryoconite was not confirmed.

Název v anglickém jazyce

Unveiling the extreme environmental radioactivity of cryoconite from a Norwegian glacier

Popis výsledku anglicky

This study is a first survey of the occurrence of artificial (Cs-137, Am-241, Bi-207, Pu isotopes) and natural (Pb-210, Ac-228, Bi-214, K-40) radionuclides in Norwegian cryoconitc. Cryoconitc samples were collected before (12 samples) and after (5 samples) a rainfall event, after which 7 cryoconitc holes dissapeared. The concentrations of radionuclides in cryoconite samples from the Blaisen Glacier arc compared with data from the Arctic and Alpine glaciers. Cryoconitc samples from the studied glacier had extremely high activity concentrations of Cs-137, Am-241, Bi-207 and 239+240PU (up to 25,000 Bq/kg, 58 Bq/kg, 13 Bq/ks and 131 Bq/kg, respectively) and also high concentrations of organic matter (OM), comparing to other Scandinavian and Arctic glaciers, reaching up to similar to 40% of total mass. The outstandingly high concentrations of (CS)-C-137, Am-241, Pu isotopes, and Bi-201 on the Bltisen Glacier are primarily related to bioaccumulation of radionuclides in organic-rich cryoconite and might be enhanced by additional transfers of contamination from the tundra by lemmings during their population peaks. The presumed influence of intense rainfall on radionuclide concentrations in the cryoconite was not confirmed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Science of the Total Environment

ISSN

0048-9697

e-ISSN

1879-1026

Svazek periodika

814

Číslo periodika v rámci svazku

MAR 25

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

152656

Kód UT WoS článku

000743243200011

EID výsledku v databázi Scopus

2-s2.0-85124636413