The role of the mining and processing enterprise in the formation of techno-geochemical anomalies of arsenic in the soils of the Soymonovskaya Valley (Southern Urals)

Mikhail V. Shabanov, M. Marichev, T. Minkina, N. Abdimutalip
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Abstract

Introduction. The heterogeneity of soil cover of mountainous areas carries in itself the specific formation of technogeochemical anomalies in the areas of metallurgical combines, and the remoteness and inaccessibility of these areas requires detailed studies of the processes of pollutants in the soil and mechanisms of their behavior. The aim of the study was to investigate the influence of aero-industrial emissions from the copper smelter on the formation of techno-geochemical anomalies of arsenic in soils and its spatial distribution. Methods and materials of the research. Studies were conducted in the area of the Karabash copper smelter (KMC), located in the southern Urals (Russia), Chelyabinsk region, one of the main pollutants of soils is arsenic, which is formed in the Soymanovskaya Valley and adjacent landscapes techno-geochemical soil anomalies. In the course of works 25 soil sections were laid at different distances and directions from KMC, taking into account the specific geo-morphological features of the territory. In the selected soil samples we determined the acidity of the salt extract, the content of organic matter, granulometric composition, gross content of arsenic and its exchangeable form. Determination of arsenic was carried out by atomic adsorption spectrometry (AA-6800 Shimadzu). To identify the dependence of arsenic concentration in the upper 0-15 cm of the soil thickness with the distance from the CMC was carried out to calculate the Pearson coefficient and the concentration coefficient (Kc). Research results and discussion. The study area was divided into 5 zones depending on the distance from CMC. Excess concentrations of gross arsenic relative to the background content varies from 64 times in the 2 km zone to 3 times at a distance of more than 10 km. Maximum concentrations were recorded in the upper 0-15 cm of the soil thickness in the 2 km zone. The exchangeable form of arsenic has a specific accumulation near the combine, with a distance of more than 10 km from the combine, there is a tendency to reduce the content of this form, to a complete absence. In the intraprofile distribution there is a pattern of accumulation in the upper 0-15 cm of the soil layer, with depth significantly decreasing. Conclusions. Patterns in the spatial distribution of arsenic in soils based on the distance from the emission of aeroindustrial emissions were revealed. Maps of the spatial distribution of gross arsenic and exchange forms in the soils of the study area. It was determined that an important role in the formation of techno-geochemical anomalies plays pH of the environment. During the calculation of Ks revealed local areas that form anomalous halos dispersion, which are confined mainly to places near the CMC and the direction of the prevailing winds. Two local areas were identified for which the Kc values are more than 50. Pearson criterion calculations confirm the dependence of the spatial distribution of arsenic in soils on the wind rose. The results may be useful in the preparation of geochemical maps of arsenic distribution. In the prediction of local and radial differentiation of arsenic in other regions with similar activity of the combine, as well as in the correction of the regional geochemical background of arsenic in soils.
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南乌拉尔索莫诺夫斯卡亚山谷土壤中砷技术地球化学异常形成过程中采矿加工企业的作用
介绍山区土壤覆盖的异质性本身就导致了冶金联合体区域技术地球化学异常的具体形成,而这些区域的偏远和难以进入,需要对土壤中污染物的过程及其行为机制进行详细研究。本研究的目的是研究铜冶炼厂的航空工业排放对土壤中砷的技术地球化学异常形成及其空间分布的影响。研究方法和材料。在位于俄罗斯乌拉尔南部车里雅宾斯克地区的卡拉巴什铜冶炼厂(KMC)区域进行了研究,土壤的主要污染物之一是砷,它形成于索伊马诺夫斯卡亚山谷和邻近景观的技术地球化学土壤异常中。在工程过程中,考虑到该地区的具体地质形态特征,在距离KMC不同的距离和方向铺设了25个土壤剖面。在选定的土壤样品中,我们测定了盐提取物的酸度、有机质含量、粒度组成、砷的总含量及其交换形式。砷的测定采用原子吸收光谱法(AA-6800岛津)。为了确定土壤厚度上部0-15cm的砷浓度与CMC距离的相关性,计算了Pearson系数和浓度系数(Kc)。研究结果和讨论。研究区域根据与CMC的距离划分为5个区域。相对于背景含量,总砷的过量浓度在2km区域为64倍,在10km以上的距离为3倍。2km区域土壤厚度的上部0-15cm记录到最大浓度。可交换形式的砷在联合收割机附近有特定的积累,距离联合收割机超过10公里,这种形式的砷含量有减少的趋势,完全不存在。在剖面内分布中,土层上部0-15cm呈堆积模式,深度显著减小。结论。根据与航空工业排放物的距离,揭示了土壤中砷的空间分布模式。研究区域土壤中总砷和交换形式的空间分布图。确定了环境pH值在技术地球化学异常形成中的重要作用。在Ks的计算过程中,揭示了形成异常晕散的局部区域,这些区域主要局限于CMC和盛行风方向附近的地方。确定了Kc值超过50的两个局部区域。Pearson标准计算证实了土壤中砷的空间分布与风玫瑰的相关性。这些结果可能有助于编制砷分布的地球化学图。在预测具有类似组合活性的其他地区砷的局部和径向分化,以及在校正土壤中砷的区域地球化学背景中。
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来源期刊
Sustainable Development of Mountain Territories
Sustainable Development of Mountain Territories Social Sciences-Sociology and Political Science
CiteScore
2.40
自引率
0.00%
发文量
36
期刊介绍: International scientific journal "Sustainable development of mountain territories" covers fundamental and applied regional, national and international research and provides a platform to publish original full papers and related reviews in the following areas: engineering science and Earth science in the field of sustainable development of mountain territories. Main objectives of international scientific journal "Sustainable development of mountain territories" are: raising the level of professional scientific workers, teachers of higher educational institutions and scientific organizations; presentation of research results in the field of sustainable development of mountain areas on the technical aspects and Earth sciences, informing readers about the results of Russian and international scientific forums; improved review and editing of the articles submitted for publication; ensuring wide dissemination for the published articles in the international academic environment; encouraging dissemination and indexing of scientific works in various foreign key citation databases.
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