Distribution of heavy metals in atmospheric air of the arid zones in Central Asia

2010 ◽  
Vol 3 (4) ◽  
pp. 183-194 ◽  
Author(s):  
Rashid Kulmatov ◽  
Mirabbos Hojamberdiev
Keyword(s):  
Heavy Metals ◽  
Central Asia ◽  
Arid Zones ◽  
Atmospheric Air

scholarly journals Relationship of Heavy Metals and Soil N, P, K and Total Salts in Tianshan Mountains, Central Asia

2013 ◽  
Vol 25 (16) ◽  
pp. 8971-8975
Author(s):  
Zhaoyong Zhang ◽  
Jilili Abuduwaili ◽  
Fengqing Jiang
Keyword(s):  
Heavy Metals ◽  
Central Asia ◽  
Tianshan Mountains ◽  
Soil N ◽  
Relationship Of

scholarly journals SCIENTIFIC AND METHODOLOGICAL ASPECTS AND PRACTICAL EXPERIENCE FOR THE FORMATION OF THE EVIDENTIAL BASE OF HAZARD TO HEALTH IN THE POPULATION IN THE ZONE OF INFLUENCE OF WASTE FROM THE PAST ECONOMIC ACTIVITY

2019 ◽  
Vol 96 (11) ◽  
pp. 1038-1044 ◽  
Author(s):  
N. V. Zaitseva ◽  
Irina V. May ◽  
S. V. Klein ◽  
S. S. Khankharev ◽  
A. A. Boloshinova
Keyword(s):  
Heavy Metals ◽  
Drinking Water ◽  
Negative Impact ◽  
Health Hazard ◽  
Harmful Effect ◽  
Morbidity Rate ◽  
Atmospheric Air ◽  
The Past ◽  
Zone Of Influence

There are described an algorithm and methods for collecting the evidential base for causing hazard to the health of the population of Zakamensk (the Republic of Buryatia) in the zone of influence of the waste of the past activities of the Dzhidinsky tungsten-molybdenum combine. The source of danger is lying sands, containing a complex of toxic heavy metals - lead, cadmium, manganese, nickel, chromium, etc. The algorithm for the formation of the evidential base included: a general analysis of the sanitary and hygienic situation; assessment in the dynamics of the quality of atmospheric air, drinking water, soil, food; assessment of the risk to the health of the population; epidemiological studies; in-depth clinical surveys of a representative group of city residents (280 people). In the blood of the examinees, heavy metals were identified as biological markers of the exposure. There was evaluated a complex of the response (effect) adequate to effects of laboratory markers. By methods of mathematical statistics there was established the presence of reliable relationships in the system “source of hazard - the quality of the environment - exposure to risk factors - health status.” The hazard to the health of a citizen, due to the negative impact of the factor, was considered to be proven if it was possible to build a continuous step-by-step logical chain of relationships between the source of the harmful effect, the quality of the habitat and the establishment of the fact of the disease. The quality of the habitat of the population of Zakamensk was shown to give rise in unacceptable risks to the health of residents. The main influencing factor is the pollution of atmospheric air, local food products and drinking water from public and private wells. Risks are realized in terms of a level of the primary morbidity rate of the population of the respiratory diseases, endocrine system, digestive organs that is relatively high compared to the matched area. The relationship between health hazard and environmental factors has been fully proved in 14% of the surveyed persons. At the same time, the territory was shown not be characterized as a zone of “ecological disaster” or “an emergency environmental situation”.

scholarly journals Research of the Content of Heavy Metals in the Atmospheric Precipitation of the Geygel, Dashkesan and Gedabek Districts of Azerbaijan

2021 ◽  
Vol 7 (6) ◽  
Author(s):  
Sh. Nuguyeva ◽  
E. Mammadov
Keyword(s):  
Heavy Metals ◽  
Neutron Activation ◽  
Atmospheric Deposition ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Epithermal Neutron ◽  
Atmospheric Precipitation ◽  
Nuclear Research ◽  
Atmospheric Air

The increasing content of heavy metals in soil and atmospheric air can lead to serious consequences in the final link of which a person is. To determine heavy metals in atmospheric deposition, the method of biomonitoring of mosses was used. Joint Institute for Nuclear Research scientists started the implementation of the mosses biomonitoring methodology in Azerbaijan 2015. In total, the concentration was determined for 44 elements. Determinations were performed using instrumental analysis of Epithermal Neutron Activation and Atomic Absorption Spectroscopy in 85 moss samples. The species of moss used in the work was Pleurosium schreberi. Based on the analysis results, the most contaminated areas are identified.

scholarly journals The Effect of Formation Processes on The Frequency of Palaeolithic Cave Sites in Semi-Arid Zones: Insights From Kazakhstan

2021 ◽  
Author(s):  
Aristeidis Varis ◽  
Christopher Miller ◽  
Patrick Cuthbertson ◽  
Abay Namen ◽  
Zhaken Taimagambetov ◽  
...  
Keyword(s):  
Central Asia ◽  
Arid Zones ◽  
Arid Environments ◽  
Formation Processes ◽  
Cave Deposits ◽  
Central Asian ◽  
Cave Sediments ◽  
Analytical Potential ◽  
Sediment Cover ◽  
Semi Arid

Central Asian caves with Palaeolithic deposits are few but they provide a rich record of human fossils and cultural assemblages that has been used to model Late Pleistocene hominin dispersals. However, previous research has not yet systematically evaluated the formation processes that influence the frequency of Palaeolithic cave sites in the region. To address this deficiency, we combined field survey and micromorphological analyses in the piedmont zone of south Kazakhstan. Here we present our preliminary results focusing on selected sites of the Qaratau mountains. Sediment cover varies among the surveyed caves and loess-like sediments dominate the cave sequences. The preservation of cave deposits is influenced by reworking of cave sediments within the caves but also by the broader erosional processes that shape semi-arid landscapes. Ultimately, deposits of potentially Pleistocene age are scarce. Our study provides new data in the geoarchaeologically neglected region of Central Asia and demonstrates that micromorphology has great analytical potential even within the limitations of rigorous survey projects. We outline some of the processes that influence the formation and preservation of cave deposits inKazakhstan, as well as broader implications for the distribution of Palaeolithic cave sites in Central Asia and other semi-arid environments.

scholarly journals Role of green spaces for migration and setting of heavy metals (as illustrated by Holosiivskyi National Nature Park, Kyiv)

2021 ◽  
pp. 97-105
Author(s):  
T. S. Tesolkina ◽  
D. V. Lukashov
Keyword(s):  
Heavy Metals ◽  
Forest Litter ◽  
Green Spaces ◽  
Winter Period ◽  
Soil System ◽  
Atmospheric Air ◽  
Leading Role ◽  
Nature Park

Air pollution by heavy metals in the urbanized surroundings presents a serious threat to human health and the environment. Road dust is distinguished as a high-level pollutant and characterized by a significant content of heavy metals. Green spaces play a leading role when it comes to improving the quality of atmospheric air in megalopolises. They trap pollutants. Most of them settle on the surfaces of plant leaves, but some can be also absorbed through the stomata. As a result of these processes, pollutants, along with fallen leaves, can later migrate to other components of the ecosystem. An important component of this system is forest litter that plays a kind of trigger role by regulating the directions of substance flows in the “leaves-litter-soil” system, keeping chemical elements from leaching out and evenly distributing their inflows. Thus, forest litter functions as a sort of biogeochemical barrier and plays a leading role in the ability of ecosystems to self-regulate. Thus, the purpose of this work was to assess the role of green spaces in improving the quality of atmospheric air in the urban surroundings and to conduct a preliminary assessment of the features of the processes of heavy metals transformation within the forest litter. The model site of research is located within the territory of Holosiivskyi forest, a part of the Holosiivskyi National Nature Park (Kyiv). The content of heavy metals in the forest litter was determined using the methods of atomic absorption spectrophotometry. The results of the study of Cu, Ni, Pb, Cd, Cr and Zn content annual dynamics within the forest litter of the hornbeam forest of the Holosiivskyi National Nature Park show that the maximum concentrations are typical for the summer period, when the litter reserves sharply decrease, and the minimum ones – for the autumn-winter period during their accumulation. Comparison of the distribution of heavy metals content within the leaf and fermented layers showed that, under the conditions of the model area, Zn, Cu, and Ni are predominantly accumulated right in the leaf layer of the forest litter. Moreover, it was revealed that the processes of leaf litter mineralization lead to migration of Cu, Ni, Pb, Cd and Cr, and setting of Zn.

Heavy Metals in Soils and Plants of Arid Zones of Russia

2018 ◽  
pp. 221-231 ◽  
Author(s):  
A. F. Tumanyan ◽  
N. V. Tyutyuma ◽  
L. P. Rybashlykova ◽  
N. A. Shcherbakova ◽  
E. V. Romanova ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Arid Zones ◽  
Heavy Metals In Soils

scholarly journals Heavy Metals and Related Human Health Risk Assessment for River Waters in the Issyk−Kul Basin, Kyrgyzstan, Central Asia

2020 ◽  
Vol 17 (10) ◽  
pp. 3506 ◽  
Author(s):  
Wen Liu ◽  
Long Ma ◽  
Yaoming Li ◽  
Jilili Abuduwaili ◽  
Salamat Abdyzhapar uulu
Keyword(s):  
Public Health ◽  
Heavy Metals ◽  
Central Asia ◽  
Human Health ◽  
River Flow ◽  
Major Ions ◽  
Human Health Risk ◽  
The Sustainable Development ◽  
River Waters ◽  
High River Flow

The water resources of Central Asia play an important role in maintaining the fragile balance of ecosystems and the sustainable development of human society. However, the lack of research on the heavy metals in river waters has a far−reaching influence on public health and the sustainable development in Central Asia. In order to reveal the possible sources of the heavy metals and to assess the associated human health risks, thirty−eight water samples were collected from the rivers of the Issyk−Kul Basin during the period with low river flow (May) and the period with high river flow (July and August), and the hydrochemical compositions and major ions of heavy metals were analyzed. No changes in hydrochemical facies were observed between the two periods and the river water type was calcium bicarbonate. Carbonate dissolution and silicate weathering controlled the variation of cations and anions in river waters from the Issyk−Kul Basin. There were some differences in the sources of heavy metals in water bodies between the two periods. During the period with low river flow, heavy metals (Cr) were closely clustered with major ions, indicating that they were mainly affected by water–rock interactions. During the period with high river flow, all heavy metals studied in this paper had different sources of major ions, and the heavy metals maybe influenced by human activities. From the human health risk assessment, the hazard quotients for all samples were less than 1, reflecting that there was no noncarcinogenic risk in the river waters of the Issyk−Kul Basin during the two sampling periods. However, the water samples with carcinogenic risk of arsenic exceeding the threshold (10−4) accounted for 21.1% of the total, indicating that there were some certain carcinogenic hazards for human health via water drinking with direct oral ingestion. The results are of certain significance for the utilization and protection of water resources in the basin as well as the protection of public health.

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