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Biomonitoring of radioactive contamination of the Yenisei River using aquatic plants.
Journal of Environmental Radioactivity ( IF 2.3 ) Pub Date : 2019-11-19 , DOI: 10.1016/j.jenvrad.2019.106100
Alexander Bolsunovsky 1 , Dmitry Dementyev 1 , Elena Trofimova 1
Affiliation  

The Yenisei River is contaminated by artificial radionuclides released by one of the Russian facilities producing weapons-grade plutonium (the Mining-and-Chemical Combine, MCC), which has been in operation for 60 years. The paper presents results of long-term monitoring of radionuclide concentrations in six aquatic plant species collected from the 1400 km Yenisei River stretch downstream of the city of Krasnoyarsk. Before the last MCC reactor was shut down (in 2010), up to 30 artificial radionuclides were detected in the plant biomass, and 2 and 5 years after the reactor shutdown, 11 and 3-5 radionuclides, respectively, were detected. The highest concentrations of radionuclides were recorded in Fontinalis antipyretica. The aquatic plant Elodea canadensis, which commonly occurs in the Yenisei River, was used in the cytogenetic study. High frequencies of chromosomal aberrations (up to 33%) were revealed in cells of Elodea canadensis roots from the Yenisei region affected by the MCC radioactive discharge, at dose rates of 45-72 μGy/d, while in the cells of the plant roots from the reference areas, the frequency of chromosomal aberrations was 5-7%, at dose rates below 2 μGy/d. The higher frequencies of chromosomal aberrations in Elodea canadensis collected from the parts of the River with increased concentrations of artificial radionuclides are associated with the radiation factor. The aquatic plant Elodea canadensis can be recommended as a bio-indicator for radioactively contaminated aquatic ecosystems.

中文翻译:

使用水生植物对叶尼塞河放射性污染进行生物监测。

叶尼塞河受到俄罗斯生产武器级p的设施之一(采矿与化学联合工厂,MCC)释放的人造放射性核素的污染,该设施已经运行了60年。本文介绍了从克拉斯诺亚尔斯克市下游1400公里的叶尼塞河河段采集的6种水生植物物种中放射性核素浓度的长期监测结果。在最后一个MCC反应堆关闭之前(2010年),在植物生物质中检测到多达30种人工放射性核素,在反应堆关闭2年和5年后,分别检测到11种和3-5种放射性核素。枫香中的放射性核素浓度最高。细胞遗传学研究使用了常见于叶尼塞河的水生植物加拿大伊乐藻。在受到MCC放射性放电影响的叶尼塞地区的加拿大伊乐藻根系细胞中,以45-72μGy/ d的剂量率发现了高频率的染色体畸变(高达33%),而在在参考区域,剂量低于2μGy/ d时,染色体畸变的频率为5-7%。从河段采集的加拿大伊乐藻中较高的染色体畸变频率与人工放射性核素的浓度增加有关,这与辐射因子有关。可推荐将水生植物加拿大伊乐藻(Elodea canadensis)用作放射性污染的水生生态系统的生物指标。在45-72μGy/ d的剂量率下,而在来自参考区域的植物根部细胞中,在2μGy/ d以下的剂量率下,染色体畸变的频率为5-7%。从河段采集的加拿大伊乐藻中较高的染色体畸变频率与人工放射性核素的浓度增加有关,这与辐射因子有关。可推荐将水生植物加拿大伊乐藻(Elodea canadensis)用作放射性污染的水生生态系统的生物指标。在45-72μGy/ d的剂量率下,而在来自参考区域的植物根部细胞中,在2μGy/ d以下的剂量率下,染色体畸变的频率为5-7%。从河段采集的加拿大伊乐藻中较高的染色体畸变频率与人工放射性核素的浓度增加有关,这与辐射因子有关。可推荐将水生植物加拿大伊乐藻(Elodea canadensis)用作放射性污染的水生生态系统的生物指标。从河段采集的加拿大伊乐藻中较高的染色体畸变频率与人工放射性核素的浓度增加有关,这与辐射因子有关。可推荐将水生植物加拿大伊乐藻(Elodea canadensis)用作放射性污染的水生生态系统的生物指标。从河段采集的加拿大伊乐藻中较高的染色体畸变频率与人工放射性核素的浓度增加有关,这与辐射因子有关。可推荐将水生植物加拿大伊乐藻(Elodea canadensis)用作放射性污染的水生生态系统的生物指标。
更新日期:2019-11-01
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