The article is devoted to the study of the activity of the natural radionuclides 40K, 232Th, 226Ra and technogenic 137Cs radionuclide in the river sediments of watercourses around the Lomonosov diamond deposit (northwestern Russia). This is the only large diamond mining and beneficiation complex in Europe. Samples of river sediments and surface waters were taken from the Zolotitsa River and its tributaries in the area of the diamond deposit. Samples of rocks were taken from quarries. Samples of kimberlites used for enrichment and rocks entering the dumps were selected. Measurements of the activity of radionuclides in bottom sediments and rocks were conducted using the low-background semiconductor gamma spectrometry method. For measurements, a detector from high-purity germanium was used. The study of uranium isotopes in bottom sediments and waters was conducted using the alpha spectrometry method. The average activity of 137Cs, 226Ra, 232Th and 40K were 5.4, 9.0, 11.2, 318.8 Bq·kg-1 respectively. The impact of the development of the field on the change in the radioecological state of the bottom sediments was evaluated. Several patterns of radionuclide accumulation have been found depending on the physicochemical parameters of river sediments. These patterns are due to the technogenic influence of the mining and beneficiation complex. The performed studies present the first evaluation of the impact of diamond mining on natural radionuclides' distribution and accumulation in the river sediments within the adjacent territories.

中文翻译：

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罗蒙诺索夫钻石矿（俄罗斯西北部）地区河流沉积物中放射性核素组成的变化。

本文致力于研究Lomonosov钻石矿床（俄罗斯西北部）周围河道的河流沉积物中天然放射性核素40K，232Th，226Ra和技术性137Cs放射性核素的活动。这是欧洲唯一的大型钻石开采和选矿基地。河流沉积物和地表水的样本是从佐洛蒂察河及其支流的钻石矿床区域中取样的。岩石样品取自采石场。选择用于浓缩的金伯利岩样品和进入垃圾场的岩石样品。使用低背景半导体伽马能谱法对底部沉积物和岩石中放射性核素的活性进行了测量。为了进行测量，使用了来自高纯度锗的检测器。使用α光谱法对底部沉积物和水中的铀同位素进行了研究。137Cs，226Ra，232Th和40K的平均活度分别为5.4、9.0、11.2、318.8 Bq·kg-1。评估了油田开发对底部沉积物放射生态状态变化的影响。根据河流沉积物的理化参数，发现了几种放射性核素积累的模式。这些模式归因于采矿和选矿联合体的技术影响。进行的研究是对钻石开采对邻近地区河流沉积物中天然放射性核素分布和积累的影响的首次评估。232Th和40K分别为5.4、9.0、11.2、318.8 Bq·kg-1。评估了油田开发对底部沉积物放射生态状态变化的影响。根据河流沉积物的理化参数，发现了几种放射性核素积累的模式。这些模式归因于采矿和选矿联合体的技术影响。进行的研究是对钻石开采对邻近地区河流沉积物中天然放射性核素分布和积累的影响的首次评估。232Th和40K分别为5.4、9.0、11.2、318.8 Bq·kg-1。评估了油田开发对底部沉积物放射生态状态变化的影响。根据河流沉积物的理化参数，发现了几种放射性核素积累的模式。这些模式归因于采矿和选矿联合体的技术影响。进行的研究是对钻石开采对邻近地区河流沉积物中天然放射性核素分布和积累的影响的首次评估。根据河流沉积物的理化参数，发现了几种放射性核素积累的模式。这些模式归因于采矿和选矿联合体的技术影响。进行的研究是对钻石开采对邻近地区河流沉积物中天然放射性核素分布和积累的影响的首次评估。根据河流沉积物的理化参数，发现了几种放射性核素积累的模式。这些模式归因于采矿和选矿联合体的技术影响。进行的研究是对钻石开采对邻近地区河流沉积物中天然放射性核素分布和积累的影响的首次评估。