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Impact of distance from the glacier on the content of 137Cs and 90Sr in the lichen Cetrariella delisei.
Chemosphere ( IF 8.1 ) Pub Date : 2020-06-19 , DOI: 10.1016/j.chemosphere.2020.127433
M Saniewski 1 , P Wietrzyk-Pełka 2 , T Zalewska 1 , P Osyczka 2 , M H Węgrzyn 2
Affiliation  

The Arctic region is substantially a pristine area, but this unique part of the globe has also been contaminated by anthropogenic radioactive nuclides, and now there is still measurable activity of anthropogenic isotopes, even though more than 50 years have passed since the main source. Radionuclides in the Arctic, especially 90Sr have seldom been studied despite their considerable environmental importance. This manuscript covers the results of 90Sr and 137Cs measurements in soil and lichen Cetrariella delisei collected from the Svalbard in 2012. In both lichen thalli and surface soils high activities of 90Sr and 137Cs were recorded and ranged between 3.69 and 28.1 Bq kg−1 90Sr and 5.38–280.1 Bq kg−1 137Cs in thalli and between 4.53 and 12.78 Bq kg−1dw 90Sr and 60.6–426.1 Bq kg−1dw 137Cs in surface soil layer. The activity of 90Sr and 137Cs in lichen thalli was influenced by distance from the glacier. This showed that during radionuclide biomonitoring of particular area with the use of lichens, it is important to take into account influence of environmental variability on radionuclides contents.



中文翻译:

距冰川的距离对地衣Cetrariella delisei中137Cs和90Sr含量的影响。

北极地区基本上是一个原始地区,但地球的这一独特区域也受到了人为放射性核素的污染,尽管自主要来源已经过去了50多年,但现在仍存在可测量的人为同位素活性。尽管北极对放射性核素,特别是90 Sr,具有重要的环境意义,但很少进行研究。该手稿涵盖了2012年从斯瓦尔巴群岛采集的土壤和地衣中的Cetrariella delisei90 Sr和137 Cs的测量结果。在地衣藻和表层土壤中均记录到90 Sr和137 Cs的高活度,范围介于3.69和28.1 Bq kg之间-1 90 Sr和5.38-280.1贝千克-1 137个铯在菌体和4.53和BQ公斤之间12.78 -1 DW 90 Sr和60.6-426.1千克贝-1 DW 137在土壤表层Cs中。距冰川的距离影响了地衣藻中90 Sr和137 Cs的活性。这表明在使用地衣对特定区域进行放射性核素生物监测期间,重要的是要考虑到环境变化对放射性核素含量的影响。

更新日期:2020-06-25
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