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Radioisotope 7Be, 210Pb, 137Cs and 40K in the needles of larch and cedar in the Novy Urengoy region (Arctic part of Western Siberia)
Applied Geochemistry ( IF 3.1 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.apgeochem.2020.104822
Dmitriy Belyanin , Yuliya Vosel , Kseniya Mezina , Mikhail Melgunov , Marya Kropacheva , Boris Shcherbov , Maksim Rubanov , Inna Zhurkova

Abstract Annual needles of larch and cedar were sampled in the tundra zone of the Arctic part of Western Siberia in order to determine 7Be, 210Pb, 137Cs and 40K specific activities. Higher concentrations of 137Cs and 40K in the needles of cedar relative to the needles of larch can be associated with a clear difference in the properties of accumulation and translocation of cesium and potassium among these species. Higher concentrations of 7Be and 210Pb in the needles of larch relative to cedar needles and close isotopic ratios (7Be/210Pb) are probably due to more efficient aerosol deposition on vegetative canopies of larch.

中文翻译:

新乌连戈伊地区(西西伯利亚北极部分)落叶松和雪松针中的放射性同位素 7Be、210Pb、137Cs 和 40K

摘要 为了测定7Be、210Pb、137Cs和40K比活度,在西西伯利亚北极地区苔原区对落叶松和雪松的一年生针叶进行了采样。雪松针中的 137Cs 和 40K 浓度高于落叶松针中的 137Cs 和 40K,这可能与这些物种之间铯和钾的积累和易位特性的明显差异有关。相对于雪松针和接近的同位素比 (7Be/210Pb),落叶松针中 7Be 和 210Pb 的浓度更高,这可能是由于在落叶松植物冠层上更有效的气溶胶沉积。
更新日期:2021-01-01
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