scholarly journals Content of cesium-137 in the soil cover of Central and Southern Tajikistan

2021 ◽  
Vol 14 (2) ◽  
pp. 66-71
Author(s):  
S. V. Muminov ◽  
B. B. Barotov ◽  
U. M. Mirsaidov ◽  
S. R. Murodov ◽  
J. A. Salomov ◽  
...  
Keyword(s):  
Soil Cover ◽  
Specific Activity ◽  
Ground Surface ◽  
Sandy Soils ◽  
Soil Samples ◽  
Sampling Point ◽  
Gamma Spectrometer ◽  
Cesium 137 ◽  
The Republic ◽  
Maximum Content

The content of cesium-137 in the soil cover of the central and southern parts of Tajikistan was studied. The study area of the regions of the republic is about 45,000 km2. 92 soil samples from the Central and Southern parts of the republic were collected from cultivated and uncultivated fields to a depth of 25 cm from the ground surface. Each sample at the sampling point was cleared of stones, roots and other inclusions. The sample was dried to an air-dry state, crushed and sieved through a sieve with a hole diameter of 2 mm. When measuring the samples, we used a standard 1 L Marinelli beaker. Measurements of the specific activity of cesium-137 in soil samples were carried out on a gamma spectrometer based on highly pure germanium. The maximum content of cesium-137 was observed in soil sample No. 1 of the Kamarob area of the Rasht district, which specific activity in the sample is 148 Bq / kg. The minimum specific activity of cesium-137 is observed in soil samples from the Tajikabad district. The dependence of the concentration of cesium-137 on the topography in the region under study has been established. In some of the investigated samples, the cesium-137 isotope was not detected (sample no. 2 from the Ayvaj area of the Shahritus district and sample no. 4 from the Farkhor district). The dynamics of the distribution of cesium-137 on the soils of uncultivated fields and soils of cultivated fields of the Khatlon region of Tajikistan has been studied. It was found that the content of the isotope of cesium-137 in the treated fields differs from the untreated ones. It has been determined that in the soils of cultivated lands, the content of cesium-137 is concentrated at a depth of 20-25 cm. At the foot of the mountains and clay soils, a relatively high content of the isotope of cesium-137 is observed in comparison with plains and sandy soils.

scholarly journals CAESIUM-137 AND STRONTIUM-90 CONCENTRATION IN PINE FOREST MEAT IN DIFFERENT ECOLOGICAL ZONES OF THE REPUBLIC OF SAKHA (YAKUTIA)

2019 ◽  
pp. 79-84
Author(s):  
E. M. Petrova ◽  
N. I. Alekseeva
Keyword(s):  
Specific Activity ◽  
Food Product ◽  
The Body ◽  
Black Grouse ◽  
Ecological Zones ◽  
Wild Game ◽  
Game Birds ◽  
Cesium 137 ◽  
Permissible Levels ◽  
The Republic

The article discussesthe current problem of food quality control, the content ofstrontium-90 and cesium - 137 in the body of wild game birds-wild game inhabiting the territory of the Republic of Sakha (Yakutia). The object for research were carcasses of wild game 3 species: black grouse; partridge; grouse. Radiation safety of wild game as a food product was determined by its compliance with permissible levels of specific activity of radionuclides, in particular 137Cs and 90Sr. These indicators are regulated by TR CU 021/2011 “on food safety”. According to the long-term (2013-2017) results of our studies 137Cs and 90Sr in carcasses of wild game, Northern, Central, Vilyuisk and southern ecological zones of the Republic of Sakha (Yakutia) was not found to exceed the permissible concentration. As a result of our research, the following results were obtained: the content of 137Cs and 90Sr in grouse carcasses: southern - 70.54±0.71 and 26.43±2.54; Central-64.81±0.18 and 20.89±1.95; Vilyuiskaya - 73.12±0.01 and 28.48±1.18. Black grouse does not live in the Northern ecological zone. The results of the study of partridges are as follows: South-69.04±2.95 and 28.17±0.05; Central - 58,69±2,18 19,87 and±0,39; Vilyui - 70,84±1.55 and 27,87±0,04; North - 28,17±0.05 and of 10.83±0,50. In the study of grouse is established: the content of radionuclides in the southern zone - 71,24±1,95; Central was 60.05±0.01 and of 21.11±1,95; Vilyui - 71,11±0.55 and of 11.47±0,32. According to the results of our studies, the data of exceeding the maximum concentration of 137Cs and 90Sr in the carcasses of wild game in all ecological zones of Yakutia were not established.

scholarly journals Application of the radiocesium method and morphometric relief indicators to the calculation of soil loss intensity on plowed slopes in the Sukhaya Orlitsa river basin

2021 ◽  
Vol 27 (4) ◽  
pp. 135-149
Author(s):  
Lyubov Trofimetz ◽  
Evgeny Panidi ◽  
Natalia Chaadaeva ◽  
Elena Sankova ◽  
Taras Ivaneha ◽  
...  
Keyword(s):  
Specific Activity ◽  
Reference Value ◽  
Google Earth ◽  
Soil Samples ◽  
Point Estimate ◽  
Spectrometric Analysis ◽  
Experimental Site ◽  
High Resolution Satellite Images ◽  
Cesium 137 ◽  
Soil Losses

Based on the authors’ data, the paper describes a methodology for assessing the spatial distribution of soil losses on the plowed slopes of the experimental site. The site is located in the basin of the Sukhaya Orlitsa River in the Orel District, Orel Region. The introduction of the principles of precision farming into land use practice requires a point estimate of soil losses, which is possible when using morphometric relief indicators. Geomorphometry methods in combination with GIS and the radiocaesium method made it possible to develop a method for calculating the specific activity of cesium-137 (as an indicator of soil losses) based on the morphometric parameters of the relief. The article presents the dependencies developed for depressions with a catchment area of ≤ 23,000 m2 and ≤ 50,000 m2. The development of a method for calculating soil losses in the elements of a depression complex on a plowed slope was carried out in two stages. At the first (field) stage, soil samples in the arable layer were taken in thalweg of depressions of different sizes. Sampling points were recorded during GPS survey. Gamma-spectrometric analysis of soil samples and their application to a digital elevation model (DEM) allowed to obtain a spatially distributed model of the specific activity of cesium-137 of Chernobyl origin on a scale of 1:10,000. To recognize the depressions, ultra-high resolution satellite images published in Google Earth were used. On the basis of the DEM, using the SAGA GIS tools, the authors built the fields of the collection area (calculated by the DEMON algorithm) and the profile curvature of the relief. The method was based on a system of dependences of the specific activity of cesium-137 on the collection area and the sign of the profile curvature. The specific activity of cesium-137 for inter-depression spaces was calculated using the equations developed for depressions with a collection area of up to 23,000 m2. To calculate soil losses, it was proposed to establish the reference value of cesium-137 individually for each of the three studied fields, which is due to the presence of the trend of Chernobyl fallout. In conditions of a polygonal block microrelief of paleocryogenic origin (which is widespread in the analyzed territory), the authors recommended determining the reference value of the specific activity of cesium-137 within block increases on the watershed surface of the plowed slopes. The trend was established on the results of the analysis of the layer-by-layer distribution of cesium-137 in depth in the thalweg of the depressions and in the balka, “receiving” overburdens from the fields under the study. Taking into account the results of the calculations, a map of the intensity of soil losses was constructed for the experimental site as of from 1986 to 2016.

THE CURRENT STATE OF THE SALT STATUS OF SOILS IN ARTESIAN SPRINGS IMPACT ZONE OF THE NORTH-WESTERN CASPIAN REGION

1970 ◽  
pp. 72-77
Author(s):  
А. B. Biarslanov ◽  
Z. G. Zalibekov ◽  
Z. U. Gasanova ◽  
P. А. Abdurashidova ◽  
V. А. Zhelnovakova ◽  
...  
Keyword(s):  
Soil Cover ◽  
Arid Zone ◽  
Salt Content ◽  
Underground Water ◽  
Irreversible Processes ◽  
Test Plot ◽  
The North ◽  
Continental Part ◽  
The Republic ◽  
Experimental Plots

The paper is devoted to soil cover degradation in the northen part of the Republic of Dagestan. Soil degradation is affected by irrational using free flowing underground water of artesians. Intensive extraction of underground water for domestic drinking water supply and pastures watering leads to irreversible processes in the soil cover. The study of salt spreading processes in soils caused by technogenic pressure is mainly considered for humid zone, in arid zone such work was not carried out. In this regard, the aim of the study is to clarify the state of the salt balance of soils for possible technogenic halogenesis under the conditions of a long half-century, continuous impact of artesian sources. The analysis of the territorial spreading of salts is considered on the example of soils of the marine coast and the central part of the Terek-Kuma lowland, represented by varieties of meadow saline and light chestnut soils. Taking into account the conditions of mutual location, experimental plots were selected with reference to artesian sources in the marine coast and in the continental part. Experimental and control sections were laid at experimental plots. Soil samples and artesian water samples were tested for the content of light soluble salts using conventional methods. It was established that under conditions of self-flowing artesian sources the soil of the continental part is characterized by an increased salt content and is 0.26-0.48% according to the profile against the background of the salt content in the samples of control plots – 0.11-0.17%. Coastal soils are characterized by a higher degree of salinization, the influence of mineralized water sources has a desalinization impact. On the test plot the salt content is 0.31–0.51%, in the control plot – 1.22–4.29%.

MEASUREMENT OF RADON CONCENTRATION IN SOIL SAMPLES OF MAZAT AND KAFI-HABU MINING SITES, PLATEAU, NIGERIA

2021 ◽  
Vol 4 (4) ◽  
pp. 295-301
Author(s):  
Abubakar Sadiq Aliyu ◽  
Aminu Ismaila ◽  
A. M. Na'Inna ◽  
Ahmed Mohammed
Keyword(s):  
Dose Rate ◽  
Radon Concentration ◽  
Background Radiation ◽  
Average Concentration ◽  
Soil Samples ◽  
Radiological Protection ◽  
Sampling Point ◽  
Monitoring And Control ◽  
Tailing Dump ◽  
Mining Sites

Radon and its short-lived progenies contributed significantly to natural background radiation. Long-term exposure to such radiation increases the probability of lung cancer to persons. To assess the radiological hazards associated with the inhalation of radon gas from ore dust in Mazat and Kafi-Habu mining sites of Plateau, Nigeria, 12 soil samples from an abandoned tailing dump ground were collected and analysed for radon using RAD-7 electronic detector. The dose rate of each sampling point was directly measured using RADOS RDS -120 portable survey meter. The results gave a mean radon concentration ranging from 771.51 ± 21.9 Bq/m3 to 5666.13 ± 28.8 Bq/m3 with 3451.13 ± 42.9 Bq/m3as the average value for all measurements. The average concentration of measurements from Mazat and Kafi-Habu is 3671.6 ± 41.2 Bq/m3 and 3010.16 ± 46.5 Bq/m3 respectively. The average values obtained from the analysis are significantly higher than the upper limit of 300 Bq/m3 set by the International Commission on Radiological Protection (ICRP) suggesting quick remediation on the host communities. The geometrical mean value of Dose Rate (DR) and Annual Effective Dose Equivalent (AEDE) were 870 nGy/hr and 1.04 mSv/yr respectively. Again, these values are above the global average limits of 59 nGy/hr and 1 mSv/yr. The result indicates that miners working in those sites and dwellers of the study areas are at higher risk of getting exposed to radon and need to employ protective measures. This work is useful in monitoring and control of radon level for the on-site workers and the 

Method of Non-Destructive Measurement of Natural Radionuclides Concentration in Building Materials

ANRI ◽  
2021 ◽  
Vol 0 (1) ◽  
pp. 31-44
Author(s):  
Aleksey Vasil'ev ◽  
Aleksey Ekidin ◽  
Mariya Pyshkina ◽  
Georgiy Malinovskiy ◽  
Aleksandra Onischenko ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Flux Density ◽  
Building Materials ◽  
Specific Activity ◽  
Natural Radionuclides ◽  
Gamma Spectrometer ◽  
Average Activity ◽  
Destructive Measurement ◽  
Non Destructive ◽  
Calculated Flux

A method for non-destructive monitoring of the content of natural radionuclides in building materials has been developed. Spectrum measurements of gamma radiation are carried out with a pre-calibrated field gamma spectrometer. The calculation of the average specific activity of natural radionuclides in building materials is carried out by comparing the calculated flux density of unscattered gamma quanta normalized to the specific activity, and the experimentally measured count rates in the photopeak. calculated for the geometry of the room under study and the location of the detector. Application of the developed method makes it possible to estimate the average activity of natural radionuclides in building materials without destruction.

scholarly journals Distribution of Bacillus thuringiensis subsp. israelensis in Soil of a Swiss Wetland Reserve after 22 Years of Mosquito Control

2011 ◽  
Vol 77 (11) ◽  
pp. 3663-3668 ◽  
Author(s):  
Valeria Guidi ◽  
Nicola Patocchi ◽  
Peter Lüthy ◽  
Mauro Tonolla
Keyword(s):  
Spatial Distribution ◽  
Bacillus Thuringiensis ◽  
Confidence Interval ◽  
Quantitative Pcr ◽  
Mosquito Control ◽  
Soil Samples ◽  
Sampling Point ◽  
Content Type ◽  
Large Numbers ◽  
Continuous Accumulation

ABSTRACTRecurrent treatments withBacillus thuringiensissubsp.israelensisare required to control the floodwater mosquitoAedes vexansthat breeds in large numbers in the wetlands of the Bolle di Magadino Reserve in Canton Ticino, Switzerland. Interventions have been carried out since 1988. In the present study, the spatial distribution of restingB. thuringiensissubsp.israelensisspores in the soil was measured. TheB. thuringiensissubsp.israelensisconcentration was determined in soil samples collected along six transects covering different elevations within the periodically flooded zones. A total of 258 samples were processed and analyzed by quantitative PCR that targeted an identical fragment of 159 bp for theB. thuringiensissubsp.israelensis cry4Aaandcry4Bagenes.B. thuringiensissubsp.israelensisspores were found to persist in soils of the wetland reserve at concentrations of up to 6.8 log per gram of soil. Continuous accumulation due to regular treatments could be excluded, as the decrease in spores amounted to 95.8% (95% confidence interval, 93.9 to 97.7%). The distribution of spores was correlated to the number ofB. thuringiensissubsp.israelensistreatments, the elevation of the sampling point, and the duration of the flooding periods. The number ofB. thuringiensissubsp.israelensistreatments was the major factor influencing the distribution of spores in the different topographic zones (P< 0.0001). These findings indicated thatB. thuringiensissubsp.israelensisspores are rather immobile after their introduction into the environment.

scholarly journals Analisis Daya Tampung Beban Pencemaran Kali Asem di Sekitar TPST Bantar Gebang dan TPA Sumur Batu

2020 ◽  
Vol 20 (1) ◽  
pp. 22
Author(s):  
Opy Kurniasari ◽  
Lina Aprianti
Keyword(s):  
Waste Management ◽  
Carrying Capacity ◽  
Local Governments ◽  
Solid Waste Management ◽  
River Pollution ◽  
Sampling Point ◽  
The Republic ◽  
Environmental Capability ◽  
Business Entities ◽  
Initial Sampling

The amount of waste management, especially in big cities and metropolitan areas, forms the basis for various policies. One of them is the Law of the Republic of Indonesia Number 18 Year 2008 concerning Solid Waste Management which mandates cooperation and partnerships between local governments, business entities, and the community in carrying out waste management. The carrying capacity of the environment should be one of the considerations in the preparation and determination of environmental management and recovery plans. However, in its implementation, the calculation of environmental carrying capacity is not easy. Therefore, planning is not based on environmental capability, but existing conditions, which are likely to have experienced degradation or exceeded carrying capacity. This condition is expected to cause a decrease in the carrying capacity of the environment around the Bantar Gebang TPST and Sumur Batu TPA, one of which is the Kali Asem river. Based on this, it is necessary to analyze the assimilative capacity of Kali Asem pollution around the TPST and TPA. The purpose of this study was to analyze the capacity of Asem River pollution load so that the ability of the environment in the area around TPST Bantargebang, Bekasi City to support the lives of humans and other living things. The results of laboratory analysis showed that at the initial sampling point, Kali Asem was already in a polluted condition which is characterized by high levels of BOD and COD.

scholarly journals Features of accumulation of the technogenic radionuclides in meat of some hunting animals in the Trans-Urals

2019 ◽  
pp. 47-52
Author(s):  
Alexander Mikhailovich Okunev
Keyword(s):  
Specific Activity ◽  
Natural Radionuclides ◽  
Farm Animals ◽  
Beta Activity ◽  
Radioactive Cesium ◽  
Anthropogenic Pressure ◽  
Wild Animals ◽  
Strontium 90 ◽  
Cesium 137 ◽  
Lead 210

The degree of contamination of the organism of wild animals with radionuclides is of particular importance in the framework of environmental monitoring and assessment of its safety, both for humans and for animals. However, the majority of domestic scientific works on this subject concerns farm animals, and the information relating to hunting animals is much less. This fact determined the relevance of our work, the purpose of which was to study the features of the accumulation of global technogenic and natural radionuclides in the meat of some wild animals in the TRANS-Urals. Experimental data on the content of technogenic radionuclides in the meat of hunting animals were obtained in the autumn-winter periods of 2014 – 2018. Analysis of the average data showed, that the content in the meat of wild animals cesium-137, depending on the animal species, ranged from 4.1 to 49.2; lead-210 – 0,7 – 4,3; and strontium-90 – 0,1 – 1,7 Bq/kg. The total beta- activity of radionuclides in the meat of wild animals varied, depending on the species, from 71.2 to 104.3 Bq/kg. At the same time, all the studied samples of meat corresponded to the norms established by SanPiN-2010 for this type of food product. Some increased accumulation of radioactive cesium (49.2 Bq/kg) and other anthropogenic radionuclides was observed in wild reindeer meat, and in the southern regions of the TRANS-Urals – in bear and wild boar meat (21.1 and 17.4 Bq/kg, respectively). In the muscle tissue of the roe deer the content of this radionuclide was slightly higher than that of the elk (14.7 and 12.2 Bq/kg, respectively). The lowest concentration of cesium-137 (4.1 Bq/kg) and other nuclides was found in beaver meat. The content of strontium-90 in the meat of all tested animals was at a minimum level, and the specific activity of lead-210 was higher than strontium-90 by 2 - 10 times, depending on the species, which indicates the accumulation of this radionuclide in forest ecosystems due to anthropogenic pressure and expansion of the technogenic zone of cities.  The results of studies have shown that differences in the accumulation of technogenic radionuclides in the meat of the hunting animals are largely related to the nature of feeding and composition of the diet of wild species, and are subject to significant fluctuations in accordance with the change in the volume and qualities of food resources in forest biotopes over the year.      

scholarly journals PEMBUATAN RADIONUKLIDA MOLIBDENUM-99 (99Mo) HASIL AKTIVASI NEUTRON DARI MOLIBDENUM ALAM UNTUK MEMPEROLEH TEKNESIUM-99m (99mTc)

2016 ◽  
Vol 22 (2) ◽  
Author(s):  
Indra Saptiama ◽  
Herlina Herlina ◽  
Sriyono Sriyono ◽  
E. Sarmini ◽  
Abidin Abidin ◽  
...  
Keyword(s):  
Fission Product ◽  
Specific Activity ◽  
Target Material ◽  
Gamma Spectrometer ◽  
Quartz Ampule ◽  
Radionuclide Separation ◽  
Outer Capsule ◽  
Parent Radionuclide ◽  
Daughter Radionuclide ◽  
Uranium Fission

PEMBUATAN RADIONUKLIDA MOLIBDENUM-99 (99Mo) HASIL AKTIVASI NEUTRON DARI MOLIBDENUM ALAM UNTUK MEMPEROLEH TEKNESIUM-99m (99mTc). Pembatasan penggunaan uranium sebagai target untuk produksi 99mTc menyebabkan rumah sakit di Indonesia  kesulitan mendapatkan pasokan 99mTc. Saat ini 99mTc diperoleh dari 99Mo hasil fisi (pembelahan uranium).  Pembuatan radionuklida 99Mo dari aktivasi neutron  molibdenum alam (MoO3) di teras reaktor G.A Siwabessy digunakan sebagai metode alternatif untuk memperoleh 99mTc. Tujuan penelitian ini adalah untuk melakukan pembuatan radionuklida 99Mo dari aktivasi neutron molibdenum alam untuk memperoleh 99mTc. Serbuk MoO3 alam sebanyak 5 gram dikemas dalam ampul kuarsa dan dimasukkan ke dalam inner capsul selanjutnya dikemas menggunakan outer capsul sebagai bahan target. Bahan target diiradiasi di reaktor G.A Siwabessy selama 100 jam. Hasil perhitungan diperoleh aktivitas  99Mo sebesar 65 % dari nilai maksimum yang dapat diperoleh. MoO3 paska iradiasi dilarutkan dengan NaOH 4 M sehingga diperoleh larutan natrium molibdat (Na2MoO4). Radionuklida 99Mo dan 99mTc diukur menggunakan spektrometer gamma. Radionuklida 99Mo terdeteksi dalam produk larutan  Na2MoO4 dengan  aktivitas jenis 99Mo yang diperoleh sebesar 0,81 Ci 99Mo/g Mo.  Radionuklida anak luruh 99mTc dipisahkan dari radionuklida induk 99Mo menggunakan kolom pemisah yang berisi material berbasis zirkonium (MBZ) sebagai penyerap 99Mo. Radionuklida 99mTc hasil pemisahan diperoleh dalam bentuk natrium pertehnetat (Na99mTcO4).dengan recovery yang masih rendah yaitu sekitar 52 hingga 71 %.Kata kunci: Molibdenum, teknesium, radionuklida, pemisahan, iradiasi. PRODUCTION OF ACTIVATED  NEUTRON MOLYBDENUM-99 (99Mo) RADIONUCLIDE FROM NATURAL MOLYBDENUM TO OBTAIN TECHNETIUM-99m (99mTc).  Uranium usage restriction causes the hospitals in indonesia difficult to obtain the suply of  99mTc. At Present, 99mTc is obtanied from molybdenum as a uranium fission product. Production of 99Mo radionuclide resulted from neutron activated natural molybdenum (MoO3) in G.A Siwabessy reactor could be used  as a alternatif method for producing 99mTc. The aim of this research is synthesize of   99Mo radionuclide from neutron activated natural molybdenum  (MoO3) to obtain 99mTc. The five grams of  MoO3 powder was packed in a quartz ampule and inserted into inner capsule then also inserted into outer capsule as a target material. It was iradiated in G.A Siwabessy reactor for 100hours. Based on theoritical calculation, about 65 % of maximum 99Mo activity could be recovered. After Irradiation,  MoO3 was dissolved by NaOH 4 M solution so it was natrium molybdate (Na2MoO4) solution. 99Mo and 99mTc radionuclide were analyzed using gamma spectrometer. 99Mo radionuclide was detected on Na2MoO4 solution as product that had specific activity of 0.81 Ci 99Mo/ g Mo. 99mTc as daughter radionuclide was separated from 99Mo as parent radionuclide using separated column containing zirconium based material (ZBM) as 99Mo adsobent. 99mTc radionuclide has been succesfully separated using ZBM column although recovery of 99mTc  was quite low in which approximately 52 to 71 %. The 99mTc radionuclide was recovered in the form of sodium pertechnetate (NaTcO4) solution.Keywords: Molybdenum, technetium, radionuclide, separation, irradiation.

Determination of the content of heavy metals in soils and plants of urban ecosystems (Kaliningrad, Russia)

2021 ◽  
Author(s):  
Nataliia Chupakhina ◽  
Pavel Maslennikov ◽  
Pavel Feduraev ◽  
Luba Skrypnik ◽  
Galina Chupakhina
Keyword(s):  
Urban Environment ◽  
Woody Plants ◽  
Urban Soils ◽  
Agricultural Landscape ◽  
Fluorescence Analysis ◽  
Soil Samples ◽  
Soil Horizon ◽  
X Ray ◽  
Accumulation Of Metals ◽  
Maximum Content

&lt;p&gt;The purpose of this work is to investigate the accumulation of metals in urban soils of the main geochemical landscapes of the urban environment and in plants growing in these areas. The paper presents the results of a study of the accumulation of metals (Cu, Pb, As, Co, Cr, V, Zn, Mn, Sr, Ni, Ca, Fe) in the accumulative soil horizon of the main functional zones of Kaliningrad (agricultural landscape, residential, industrial and municipal). As a control, we used the landscape of recreation and recreation. The accumulation of elements in the soil and leaves of plants during the growing season and calendar period (year) was studied. The content of TM was determined in the leaves of woody, shrubby and herbaceous plants (22 species) of the urban environment of the city of Kaliningrad.&lt;/p&gt;&lt;p&gt;The metal content in the samples was determined by X-ray fluorescence analysis on the Spectroscan Max-G device. Soil samples were taken from the upper accumulative horizon with a thickness of 0 to 10 cm by the envelope method. The content of TM in the samples was determined by X-ray fluorescence analysis on the device &quot; Spectroscan Max-G &quot;(&quot;Spektron&quot;, Russia). Soil samples for analysis were prepared in accordance with the M049-P/10 method.&lt;/p&gt;&lt;p&gt;In urban soils, a significant excess of background concentrations of lead, manganese, zinc, copper, strontium and nickel (Pb&gt;Cu&gt;Zn&gt;Mn&gt;Sr&gt;Ni) was found. The maximum content of pollutants in urban soils was observed in industrial and residential multi-storey areas with increased transport load. It is shown that the pH of the soil has the greatest influence on the distribution of metals in the accumulative horizon.&lt;/p&gt;&lt;p&gt;The absorption of elements by plants is species-specific. The highest total level of metals (Mn, Fe, Zn, Sr, Br, Rb) was observed in the leaves of woody plants: holly maple, hanging birch and heart-shaped linden. Of the studied elements, the plants most accumulated manganese and iron. The accumulation of manganese in the leaves is more characteristic of woody plants than of shrubs or grasses. The maximum content of Mn was found in the leaves of holly maple (79.5%), in the leaves of other plants, manganese accumulated significantly less actively (2.7 - 35.6%). The predominant accumulation of iron was observed in the leaves of white clover, wrinkled rose and crowned chub, its content in the leaves was 81.0&amp;#8212;83.8 %. Among woody species, the maximum concentration of iron was found in the leaves of heart-shaped linden (69.9 %) and hanging birch (53.4%). Among the species that actively accumulate Zn &amp;#8212; black poplar (32.5 %), in the leaves of other plants, the zinc content is 2.2 &amp;#8212; 16.8% of the total pollutants. The highest content of strontium was found in samples of meadow clover (19.1 %), in the leaves of other plants the proportion of metal was significantly lower (1.8&amp;#8212;11.4%). Analysis of the accumulation of metals in the leaves of the studied plants revealed a positive correlation between the content of Fe and Sr (r = 0.71).&lt;/p&gt;&lt;p&gt;&amp;#160;&lt;/p&gt;

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