scholarly journals Correlation analysis of heavy metals content in bottom sediments of the shallow zone Sheksninskaya spur of the Rybinsk reservoir in the city of Cherepovets (Russia, Vologda oblast)

2021 ◽  
Vol 265 ◽  
pp. 02017
Author(s):  
Inna Neporozhniaia ◽  
Irina Snetkova

The paper presents the results on the content of heavy metals in the bottom sediments of shallow areas of the Sheksninsky spur and the correlation dependences on the content of heavy metals. Significant differences in the content of heavy metals on different banks of the Sheksninsky spur were found only for lead (p=0.042). The matrices of paired correlations were constructed, the analysis of which showed that a greater number of dependencies with heavy metals were found on the right bank. The sorption of mercury by organic matter plays a greater role than the sorption of other elements, the correlation is significant r=0.70. Single exceedances of maximum permissible concentrations (MPC) of lead and copper in bottom sediments of the right bank were detected. Exceedances of element clarks determined for the earth crust were observed for lead, zinc, copper for bottom sediments of the right bank. A decreasing series of distribution of heavy metal concentrations in bottom sediments of the Sheksninsky spur was determined.

2008 ◽  
Vol 37 (4) ◽  
Author(s):  
Mirosław Skorbiłowicz ◽  
Elżbieta Skorbiłowicz

The distribution of lead, zinc, and chromium in fractions of bottom sediments in the Narew River and its tributariesThe purpose of the paper was to evaluate the distribution of lead, zinc and chromium contents in different grain fractions of bottom sediments in the Narew River and some of its tributaries. This study also aimed to determine which fractions are mostly responsible for bottom sediment pollution. The studies of the Narew and its tributaries (the Supraśl, Narewka, and Orlanka) were conducted in September 2005 in the upper Narew catchment area. The analyzed bottom sediments differed regarding grain size distribution. The studies revealed the influence of the percentage of particular grain fractions present on the accumulation of heavy metals in all bottom sediments.


2018 ◽  
Vol 13 (2) ◽  
pp. 113-122 ◽  
Author(s):  
Dzerassa N. Chigoeva ◽  
Inna Z. Kamanina ◽  
Svetlana P. Kaplina

The long history of development of deposits of lead-zinc ores of the Sadonsky mining region led to the formation of extensive halos of chemical pollution of surface watercourses. Aim. The aim of this study is to monitor surface watercourses in the area of the Unalsky tailing dumps and the Kholst deposit by points of sampling of 1992-2004. Sampling was conducted in the summer of 2016. Methods. The content of heavy metals of 2 and 3 hazard classes (Pb, Cd, Ni, Zn and Cu) was studied by atomic absorption. The contribution of the Unaldon River and Unalsky tailing dump to the pollution of the Ardon River. Results. The highest content of cadmium, lead and zinc, significantly exceeding the maximum permissible concentrations (MPC) in the water bodies of cultural and domestic use is found in the Ardon River down from the Unalsky tailing dump. The flow of heavy metals into the Unaldon River with adit waters compared with the observation period of 1992-2004 decreased noticeably. In conditions of a reduction in the production capacity of mining and processing enterprises, the leaching of heavy metals from mountain dumps and excavations make an insignificant contribution to the pollution of the Ardon River in comparison with the Unalsky tailing dump. Conclusion. The state of the Ardon River down from the discharge from the tailing dump corresponds to the "environmental disaster" category. The condition of the rivers Mayramdon and Unaldon according to the content of heavy metals corresponds to a "relatively satisfactory" type.


2012 ◽  
Vol 518-523 ◽  
pp. 1621-1624 ◽  
Author(s):  
Lin Hua Sun

Heavy metal (Zn, V, Cr, Co, Cu and Pb) concentrations in bottom sediments from Tuo River in Suzhou City have been analyzed for determing their average levels and distribution concentrations, and statistical analysis (correlation, cluster and principle component) have been taken place for evaluating their lithogenic and/or anthropogenic sources. The results imply that the concentration of metals following the order Co>Zn>V>Cr>Cu>Pb with homogeneous distribution. The lithogenic metals (V, Cr and Co) are enriched out of the city, whereas the anthropogenic (industry and vehicle related) metals (Zn, V, Cu and Pb) are enriched in the city.


2018 ◽  
Vol 29 (4) ◽  
pp. 10-15
Author(s):  
Katarzyna Maj-Zajezierska ◽  
Piotr Koszelnik

Abstract The aim of the present study was to determine the level of contamination of the bottom sediments in the Rzeszow reservoir by the selected heavy metals Pb, Cd and Zn, and to identify the potential environmental risks of heavy metals content basing on available assessments and classification of bottom sediments. The Rzeszow reservoir is situated on the Wisłok River in the Podkarpackie Voivodeship, southeaster Poland, was constructed on 1974. Nowadays, as a result of silting, the reservoir reduced its surface and depth, which does not have a positive effect on the assumed functions it is to perform. The study was conducted in 2016. The samples of sediment were collected in five locations. Samples were taken twice: in June and in October. The following concentrations have been determined: cadmium - 0.01 ÷ 0.92 mg•kg–1, zinc - 54.39 ÷ 128 mg•kg–1, lead - 2.98 ÷ 25.42 mg•kg–1. The decline trend in the sediment is following: Zn > Pb > Cd. For the assessment of sediment contamination, following methods: aquatic sediment quality classification used by the Polish Geological Institute - I class, Regulation of the Minister of Environment of April 16 2002 on the types and concentrations of substances contaminating the excavated material – unpolluted and LAW sediment classification – Pb - I/I-II, Cd - I/I-II/II and Zn - I/I-II. The obtained results were compared with the results obtained by the other authors in earlier years, which led to the estimated changes in the concentration of the tested metals.


2020 ◽  
Vol 12 (2) ◽  
pp. 86-95
Author(s):  
Alla Poltoratska

The article focuses on the novels «Tomorrow The Cats» (2016) and «Her Majesty the Cat» (2019) by French author B. Werber, in which the author presents one of his options for the future interaction of a man with an animal, where the latter is depicted outside the traditional perception of a man. The work explores the writer’s vision of future relationships between species and the conditional symbiosis of animals and people in order to save both. The study examines cyborg-animals that strive to change the world order. The writer in the novels presents a new level of human interaction with another (laboratory animal, cyborg animal) and calls for revision of the generally accepted human perception of animals. A man must abandon traditional highness and consider ways to stop environmental problems, among which are the extinction of rare species of animals. The author tries to warn a person, therefore describes a number of situations in which a man appears to be cruel to the world around, and to protect a future man from results of her own actions. Against the background of the war, the author depicts the problem of human interaction with the outside world, in which the threat to everything alive is not only looting, plague, but also the invasion of rats who seek to dominate the city. For general salvation, animals unite with people, which makes it possible for the writer to interpret the image of an animal as a species close to humans. B. Werber says that the mission of people on earth is changing, they should worry not only about their species, but also about the world around and notes «The Earth is laid to the same extent to all forms of life, animals or plants that inhabit it. And no species objectively has the right to proclaim itself "higher than others"».


2019 ◽  
Vol 23 (10) ◽  
pp. 39-43 ◽  
Author(s):  
K.Yu. Mikhaylichenko ◽  
A.I. Kurbatova ◽  
A.Yu. Dorontsova ◽  
A.A. Paukova

The quality of the water and bottom sediments of the Rybinsk Reservoir, on the adjacent territory of which the Cherepovetskiy Metallurgical Plant PJSC “Severstal” is located, which has an adverse effect on the state of the water body is investigated. The pollution of water and bottom sediments by the metallurgical plant in the northern part of the Rybinsk reservoir was assessed in connection with the planned construction of a pulp and paper mill (PPM) at the site of the study.


Author(s):  
A. B. Vasilenko ◽  
◽  
N. V. Polshchikova ◽  
O. I. Marceniuk ◽  
А. V. Namchuk ◽  
...  

The tradition of the holidayswhich dedicatedtotheendof the grape harvest, was born in Hellada in ancient times, in the countryside and gradually moved to the cities. This process began in the VIII century BC. Holidays were dedicated to God Dionysus, he was responsible about the natural forces of the earth and vegetation, the mastery of viticulture and winemaking. The holiday started to name Dionysuy. One of the most important action –dance around a circle. Then it becamenational, it conducted in cities, where was taken the new forms. Actors or other free citizens of the city performed on the level of the round plan as a symbol (similar to the village dance in a circle) citywide holiday, the audience were also residents of the city, seats for which came down to the playground of actors in the form of a semicircular funnel. Initially, such places were arranged on artificial sub-constructions of wood. Such structures were prefabricated and were used many times. There have been cases of their collapse. Only after being in Athens to the second part of VI century BC such structures collapsed during the performance, it was decided more of this type of sub-exercise not to be used. From the end of the VI century BC, places for spectators were cut downin the natural hills. And the theaters themselves turned into stationary facilities, which contributed to many spectacular innovations and conveniences of actors -all this increased the visual efficiency of performances. From a simple place of national celebration gradually theaters turned into city-wide centers of state-political information (where the words of the actors conveyed to the audience the general provisions of state policy). For example, in the time of Pericles (444-429 BC), the poor free citizens of Athens were given theatrical money from the state treasury, which they had the right to spend solely on watching theatrical productions. Taking into account the fact that the theaters gathered several thousand spectators at the same time, the performances contributed to the dissemination of state information at a time for a large number of residents of the city. The Theatre of Deonis in Athens under the acropolis of the Acropolis accommodated 17,000 spectators from the total number of citizens in the heyday of 100,000. In addition, it was noticed that certain performances contribute to the optimistic mood of the ISSN 2519–4208. ПРОБЛЕМЫ ТЕОРИИ И ИСТОРИИ АРХИТЕКТУРЫ УКРАИНЫ.2020. No 20142audience, and this has a beneficial effect on their health. Therefore, it is no coincidence that theatrical productions (late classics of Hellas) were provided among the medical and recreational procedures in the “Asclepius” treatment and health procedures at VI C. in B.C.). The “Asclepius” architectural ensemble has a theatre as part of a medical and recreational center.Theatrical actions carried to the masses the state lines of ideology and politics, increased the general culture of the population while influencing the audience as wellness procedures. Theatrical performances were more effective than temple services. This is the need for the construction of theaters throughout Hellenism, where there was no city within Hellenistic borders, where there would be no theater. By the end of the III century BC, when the entire East Mediterranean world was subordinated to the Roman Republic, the type of theatrical construction of Hellas was completely formed. This was accepted by the Romans for their theatrical productions, gradually adapting it to the features of their mass-entertainment culture.


2021 ◽  
Vol 265 ◽  
pp. 02015
Author(s):  
Valentina Kudryavtseva ◽  
Tatyana Shigaeva ◽  
Natalya Alekseeva

For each summer from 2014 to 2019 the total concentrations of copper, zinc, cadmium, and lead in the surface layers of bottom sediments in the coastal zone of the eastern part of the Gulf of Finland were measured. The northern coast in the area of the city of Primorsk currently sees the rate of the pollution of surface-level bottom sediments with heavy metals decrease, although the concentration levels remain high. On the southern coast in the area of the city of Lomonosov the pollution of the bottom sediments is on the rise due to the ongoing construction of the Bronka seaport. In the Koporskaya and Grafskaya Bays a massive growth of macroalgae caused a further accumulation of metals in the bottom sediments, which are greatly impacted by climatic fluctuations.


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