Radionuclides (40K, 232Th, 226Ra, 137Cs, and 90Sr) in Agroecosystems of the Central Chernozem Region

IF 0.7 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Doklady Earth Sciences Pub Date : 2024-09-16 DOI:10.1134/s1028334x24603134

S. V. Lukin

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Abstract

Studies were conducted in 2023–2024 at reference sites of Belgorod oblast. The study procedure is conventional in the agrochemical service. The purpose of this work is to study the specific activity of natural and artificial radionuclides in the soils and the plants of certain agroecosystems. These studies have shown that the average specific activity of ⁴⁰K does not vary significantly in the leached (539 Bq/kg), typical (544 Bq/kg), and ordinary (573 Bq/kg) arable chernozems, while in the residual carbonate chernozems, this parameter (207 Bq/kg) is 2.60–2.77 times lower. The average specific activity of ²³²Th in the leached (39.2 Bq/kg), typical (42.9 Bq/kg), and ordinary (46.7 Bq/kg) chernozems is 1.97–2.35 times higher than in the residual carbonate (19.9 Bq/kg) chernozems. The average specific activity of ²²⁶Ra in the soils studied do not differ significantly, staying within 17.3–18.9 Bq/kg. In the soils of the western and eastern areas of the region, the specific activity of ¹³⁷Cs ranges within 5.9–19.6 and 16.3–87.2 Bq/kg, respectively. The specific activity of ⁹⁰Sr in the soils of the western regions is below 3, whereas for the eastern, it is below 5 Bq/kg. In the plant products studied, the average specific activity of ⁴⁰K varies within 111–597 Bq/kg, while those of ²³²Th and ²²⁶Ra do not exceed 6 and 8 Bq/kg, respectively. The specific activity of ¹³⁷Cs is less than 3, and that of ⁹⁰Sr is 2 Bq/kg, which is significantly lower than the established maximum levels for this parameter.

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切尔诺泽姆中部地区农业生态系统中的放射性核素（40K、232Th、226Ra、137Cs 和 90Sr

摘要 2023-2024 年在别尔哥罗德州的参考点进行了研究。研究程序是农业化学服务的常规程序。这项工作的目的是研究某些农业生态系统的土壤和植物中天然和人工放射性核素的比活度。这些研究表明，40K 的平均比活度在沥滤土壤（539 Bq/kg）、典型土壤（544 Bq/kg）和普通土壤（573 Bq/kg）中变化不大，而在残留碳酸盐土壤中，这一参数（207 Bq/kg）则低 2.60-2.77 倍。在浸出型（39.2 Bq/kg）、典型型（42.9 Bq/kg）和普通型（46.7 Bq/kg）石壤中，232Th 的平均比活度是残留碳酸盐石壤（19.9 Bq/kg）的 1.97-2.35 倍。所研究土壤中 226Ra 的平均比活度差异不大，保持在 17.3-18.9 Bq/kg 范围内。在该地区西部和东部的土壤中，137Cs 的比活度范围分别为 5.9-19.6 和 16.3-87.2 Bq/kg。西部地区土壤中 90Sr 的比活度低于 3，而东部地区则低于 5 Bq/kg。在所研究的植物产品中，40K 的平均比活度介于 111-597 Bq/kg 之间，而 232Th 和 226Ra 的比活度则分别不超过 6 和 8 Bq/kg。137Cs 的比活度低于 3，90Sr 的比活度为 2 Bq/kg，大大低于该参数的既定最高水平。

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来源期刊

Doklady Earth Sciences 地学-地球科学综合

CiteScore

1.40

自引率

22.20%

发文量

138

审稿时长

3-6 weeks

期刊介绍： Doklady Earth Sciences is a journal that publishes new research in Earth science of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.