scholarly journals Impact assessment of solid runoff on heavy metals migration during high floods on the Amur river

2021 ◽  
Vol 895 (1) ◽  
pp. 012025
Author(s):  
A N Makhinov ◽  
A F Makhinova ◽  
Sh Liu
Keyword(s):  
Molecular Mass ◽  
Chemical Interaction ◽  
Chemical Elements ◽  
Chemical Compounds ◽  
Left Bank ◽  
Amur River ◽  
Neutral Compounds ◽  
The Amur River ◽  
The Right

Abstract Inhomogeneity of the concentrations of chemical elements in the cross-section of the Amur River is considered as a function of the state of their soluble and suspended forms. Flooding of wetlands and urbanized areas contributes to the removal of pollutants into the river channel. The wide spread of fens on the left bank contributes to the concentration of organic matter along the left bank of the river. Terrigenous material mostly comes from the right bank, where agricultural fields are concentrated. The ratio of their concentrations is maintained by the duration of the flood. The mechanisms of redistribution of elements between their suspended and soluble forms have been studied. The mechanisms of sorption of chemical compounds on mineral and organic colloids are described. It was found that mineral colloids with a negative charge due to electrostatic attraction sorb electrically neutral compounds (hydroxoaqua complexes [Mn(OH)2(OH2]0, ammonia [Cu(NH3)4(OH)2]0. The role of organic material in the redistribution of chemical compounds between soluble and suspended forms is shown. Organic colloids with molecular mass > 5.0 kDa precipitate complex cations – [FeHSO4]+, [FeHSO4]2+, [CuHSO4]+. An organic substance with a molecular mass of <2.0 kDa has a greater complexing ability for Fe(2)3+, Cu2+, Zn2+, Mn2+ ions. They bind metals to organo-mineral complexes by chemical interaction and form mobile organo-mineral complexes and heteropolar salts.

scholarly journals Seasonal and spatial variability of the ammonium nitrogen content in the Amur River near Khabarovsk in 2018–2019

2020 ◽  
Author(s):  
В.П. Шестеркин ◽  
Н.М. Шестеркина
Keyword(s):  
Winter Season ◽  
High Water ◽  
Ammonium Nitrogen ◽  
Ice Formation ◽  
Left Bank ◽  
Regulated Rivers ◽  
Amur River ◽  
Winter Runoff ◽  
The Amur River ◽  
The Right

Представлены результаты наблюдений за содержанием аммонийного азота в воде р. Амур у г. Хабаровск в 2018–2019 гг. Максимальные значения установлены в правобережной и средней части русла в 2018 г. в начале ледостава (0.37 мг N/дм3), в 2019 г. в конце ледостава (0.32 мг N/дм3). Наименьшие значения зимой отмечены в левобережной части русла Амура из-за влияния зарегулированных рек Зея и Бурея. Показано постепенное снижение концентрации аммонийного азота в течение зимнего периода в 1.5 раза в 2018 г. и возрастание в 2.4 раза в 2019 г. Выявлено снижение концентраций в зимнюю межень 2018–2019 гг. по сравнению с периодом 2011–2013 гг. в 1.9 раза, что свидетельствует об улучшении качества воды р. Сунгари, а соответственно и Среднего Амура. В период открытого русла содержание аммонийного азота по сравнению с зимней меженью ниже и не превышает 0.1 мг N/дм3. Наибольшие значения наблюдаются в правобережной и средней части русла во время половодья и на подъеме паводков, сформированных в бассейнах рек Уссури и Сунгари. Показано, что на гребне катастрофического паводка, сформированного в Забайкальском крае в 2018 г., и очень сильного паводка в 2019 г. содержание аммонийного азота не превышало 0.05 мг N/дм3. Установлено, что содержание аммонийного азота в левобережной части русла, а в межпаводочный период по всей ширине Амура находится ниже предела обнаружения. The results of observations over the content of ammonium nitrogen in the water of the Amur River near Khabarovsk in 2018–2019 are presented. The maximum values were determined in the right-bank and middle parts of the riverbed in 2018 at the beginning of ice formation (0.37 mg of N/dm3) and in 2019 at the end of ice formation (0.32 mg of N/dm3). The minimum values were observed in winter in the left-bank part of the Amur riverbed due to effect of the regulated rivers of Zeya and Bureya. The gradual decline in the concentration of ammonium nitrogen 1.5 times during the winter season of 2018 and growth 2.4 times in 2019 are shown. The decrease in concentrations 1.9 times during the winter runoff low of 2018–2019 in comparison with period of 2011–2013 was revealed which gives evidence of the water quality improvement in Sungari River and, respectively, in the middle reaches of Amur River. In the period of free channel, the content of ammonium nitrogen is lower in comparison with the same during winter low-water level and does exceed 0.1 mg of N/dm3. The maximum values are observed in the right-bank and middle parts of the riverbed during high water and on the rise of floods formed in the catchments of the Ussuri and Sungari Rivers. It was demonstrated that in the top of the catastrophic flood formed in the Trans-Baikal Territory in 2018 and very strong flood in 2019, the content of ammonium nitrogen did not exceed 0.05 mg of N/dm3. It has been established that the content of ammonium nitrogen in the left-bank part of riverbed and in the peak-flood interval across the whole width of the Amur River is below detection limit.

scholarly journals Ecological and chemical characteristics of small river Arguzikha (Zeya-Bureya plain, Russia)

2020 ◽  
Vol 203 ◽  
pp. 03001
Author(s):  
Antonina Pakusina ◽  
Tatyana Platonova
Keyword(s):  
Heavy Metals ◽  
River Water ◽  
Myriophyllum Spicatum ◽  
Ammonium Nitrogen ◽  
Left Bank ◽  
Amur River ◽  
High Oxygen Content ◽  
The Amur River ◽  
Toxic Concentrations ◽  
Water Bottom

The article considers the results of research from 2015 to 2019 on the study of hydrochemical indicators and the content of heavy metals in the ecosystem components of the small Arguzikha river , a left-Bank tributary of the Amur river (water, bottom sediments, macrophytes, birds ’ feathers). High oxygen content in the water (8.8-15.9 mgO2/dm3) and high BOD5 values (6-12 mgO2/dm3) in the middle and lower reaches of the Arguzikha river indicate the process of eutrophication. The value of permanganate oxidability (6.8-15.5 mgO/dm3) characterizes the high content of organic substances in water. In the spring, nitrate nitrogen (3.45-6.39 mgN-NO3-/dm3) was found in the water of the Arguzikha river, which had a pyrogenic origin. In the summer the rainy season was dominated by ammonium nitrogen (2.34 mgN-NН +/dm3). The high content of total phosphorus (0.337-0.609 mg/dm3) in the river water was in the spring. In the spring of 2015, the concentration of lead in the lower reaches of the river reached 6.36 µg/dm3, during the subsequent time, the lead content in the Arguzikha water was less than the MPC. Toxic concentrations of lead (> 30 mg / kg) and manganese (> 300 mg/kg) were found in macrophytes of Nymphoides peltata and Myriophyllum spicatum. In the feathers of waterfowl of the Arguzikha river the content of heavy metals decreases in a row Fe>Zn>Cu>Pb>Mn>Сг>Ni>Cо>Cd. The feathers of Anas acuta and Anas querquedula contained Pb 17.7 mg/kg and 22.2 mg/kg, Cd 0.15 mg/kg and 0.08 mg/kg, respectively.

scholarly journals Cooperation of the Amur Shipping Company and Heilongjiang Shipping Group on the development of Sino-Russian border relations in the Amur Region

2021 ◽  
pp. 1-11
Author(s):  
Olga Zalesskaia ◽  
Ying Cai
Keyword(s):  
Far East ◽  
Asia Pacific ◽  
Amur River Basin ◽  
Amur River ◽  
Shipping Company ◽  
Gradual Development ◽  
The Amur River ◽  
Chinese Company ◽  
Far Eastern

River transportation along the Amur River has played a crucial role in the development of Sino-Russian relations since the middle of the XIX century. With the opening of Far Eastern borders and the improvement of Sino-Russian relations at the turn of the XX &ndash; XX centuries, they river transportation amplified its importance. The subject of this research is the cooperation of the Amur Shipping Company and Heilongjiang Shipping Group in the Far East. An overview is given to the activity of the two largest shipping companies of Russia and China in the Amur River Basin, as well as to the line of activity of the Chinese company aimed at the development of Sino-Russian border relations. The scientific novelty lies in the analysis of interaction between the Amur Shipping Company and Heilongjiang Shipping Group. The conclusion is made on the immensity of the accumulated historical experience of cooperation, all-round role of interaction between the the Amur Shipping Company and Heilongjiang Shipping Group in Sino-Russian relations, gradual development of the two corporations, and development potential of further cooperation in the conditions of COVID-19 pandemic. The article is relevant for studying the strategic development of Heilongjiang shipping companies and the role of Amur river transport in the context of Russia's economic integration into the Asia-Pacific Region.

Russia and Moldova: Between the Legacy of the Past and the Horizons of the Future (Essays on the Post-Soviet Time 1991–2020)

2021 ◽  
Author(s):  
Farit M. Mukhametshin ◽  
Vyacheslav P. Stepanov ◽  
Keyword(s):  
Regional Identity ◽  
Left Bank ◽  
Social Scientists ◽  
Republic Of Moldova ◽  
Political Processes ◽  
The Past ◽  
Soviet Time ◽  
The Republic ◽  
The Right

The monograph is devoted to the study of the Russian cultural factor in the life of the Moldovan community during the years of independence. Many of the processes discussed in this book have their origins in the past. Therefore, the work presents sufficiently detailed excursions into history in order to better understand the present day. In the study, the authors divide the studied time into a number of conditional periods that have developed on the right and left banks of the Republic of Moldova. The assessment of socio-political processes in modern Moldova is presented. Attention is drawn to the role of Russia in supporting the Russian-cultural population, normalizing the confrontation between Chisinau and Tiraspol. The political and cultural frontier of the Prut-Dniester interfluve and the left-bank Dniester region is emphasized, for which the phenomenon of regional identity and provincialism is specially considered. The dynamics of the Russian ethnocultural movement in the region is considered, attention is drawn to the situation with the Russian word on the two banks of the Dniester. The monograph is intended for the attention of politicians, journalists, social scientists, graduate students and students, everyone who is interested in contemporary Russian-Moldovan relations, the situation of the population in the Republic of Moldova.

scholarly journals BASIS FOR SELECTION OF RIVERS FOR MONITORING ON THE STOCKS OF CHUM AND PINK SALMON IN THE AMUR RIVER

2019 ◽  
Vol 199 ◽  
pp. 19-34
Author(s):  
S. F. Zolotukhin
Keyword(s):  
20Th Century ◽  
River Basin ◽  
Chum Salmon ◽  
Pink Salmon ◽  
Species Number ◽  
Amur River Basin ◽  
Left Bank ◽  
Amur River ◽  
Spawning Grounds ◽  
The Amur River

The monitoring of chum and pink salmon escapement to spawning grounds in the Amur River basin was stopped in 2009. To start it again, a proved choice of the rivers is necessary for adequate controlling of these species number, by the spawning habitats of their population groups within the basin. For this purpose, results of the monitoring in 1949–2000 and the data on human settlements in the medieval times are analyzed. The lower reaches of the Amur were anciently inhabited by the paleoasiatic Nivkh people and the upper reaches where the fall chum spawned in spring waters were inhabited by the people of Pokrovskaya archeological culture — their burial grounds coincided with the spawning area of fall chum salmon. To reach these spawning grounds, fall chum salmon migrated up to the distance of 3427 km from the Amur mouth, but since the 20th century they occur rarely in the upper reaches of the Amur, in particular within Chinese territory where they are not observed in more than 50 years; recently they spawn in spring waters at the distance 500–1200 km from the Amur mouth, mainly in its right tributaries. The reproduction centers of other two populations of chum salmon, as the summer chum and fall chum breeding in hyporheic waters, are located in the Amgun River basin (the lower left tributary of the Amur). The fourth population is the lake chum salmon breeding in spring waters of Lake Chlya located on the left bank in the lower reaches of the Amur River. Centers of reproduction for both pink salmon populations, differentiated by even and odd years of spawning, are located in the Amgun River. Several test rivers are selected within all mentioned centers of reproduction, they are: Kerbi, Duki, Im, Somnya, Aksha, Khilka, Beshenaya, Gur, Anui, Khor, Kur, and Bira. This list is similar to the list of the rivers where chum and pink salmons were monitored in the 20th century

scholarly journals Boyar Gantimur from Bogdoy Khan: Birth and Debunk of a Myth

2020 ◽  
Vol 19 (8) ◽  
pp. 9-34
Author(s):  
Andrey S. Zuev
Keyword(s):  
Social Hierarchy ◽  
The State ◽  
Historical Research ◽  
Qing Empire ◽  
Ruling Elite ◽  
Amur River ◽  
The Amur River ◽  
State And Local ◽  
The Right

This article discusses the main facts about one of the leaders of the nomadic Ewenkis of Transbaikalia  Gantimur, who in 1666/67 left Qing empire and got through the process of naturalization in Russia. The author criticizes the narrative that is widespread in the state and local historical works and genealogical writings. According to it, Gantimur belonged to the Manchu ruling elite and allegedly participated in 1655 in the attack on the Russian Komarsky ostrog (fortress), located on the right bank of the Amur. Based on the analysis of a broad range of archival and published sources (petitions of Gantimur and his descendants, reports of Russian explorers and administrators, diplomatic documents drawn up during the Russian-Manchu negotiations) and historical research, it is shown, how this narrative appeared and became prevalent. The author proves that this historical myth does not correspond to real facts and was fabricated by the grandchildren of Gantimur in order to improve their status in the Russian social hierarchy and increase wealth. This article concludes by arguing that Gantimur was not part of the Manchu elite and did not take part in the Manchu campaigns on the Amur river.

scholarly journals SOIL CHEMISTRY TRENDS

2010 ◽  
pp. 64-82
Author(s):  
Yu. Vodianitsky
Keyword(s):  
Organic Matter ◽  
Soil Contamination ◽  
Soil Chemistry ◽  
Chemical Elements ◽  
Chemical Compounds ◽  
Soil Protection ◽  
X Ray ◽  
Biochemical Processes ◽  
Modern Soil

In modern soil chemistry, four main directions are being actively developed: 1) chemistry of organic matter, 2) biochemical processes in soils, 3) chemical basis of soil protection, 4) soil study aschemical membrane and a pool of chemical elements. Interest to the study of organic matter, soil contamination and the role of soil as a chemical component of the environment reflects pragmatic trends in modern soil chemistry. Many advances in soil chemistry are now associated with the use of new nonspecific methods of analysis, primarily physical ones. The greatest progress has been made inidentification of individual chemical compounds in soil when using synchrotron X-ray technology.

Ecological and geographical criteria of species in Quaternary mammals on the example of ground squirrels of the subgenus Colobotis (Sciuridae, Rodentia)

2021 ◽  
pp. 180-195
Author(s):  
Liliia Popova ◽  
Leonid Rekovets
Keyword(s):  
Small Mammals ◽  
Climatic Changes ◽  
Ground Squirrels ◽  
Middle Pleistocene ◽  
Left Bank ◽  
Species Ranges ◽  
Resistant Species ◽  
Left And Right ◽  
The Right

Pleistocene small mammals demonstrate two main types of response to climatic changes: elastic (significant changes of species ranges) and resistant (stable ranges). Extinct ground squirrels of the subgenus Соlobotis belonged to climate-resistant species and formed morphologically distinct subspecies. The dispersal of the Middle Pleistocene Spermophilus (Сolobotis) superciliosus both on the left and right bank of the Dnipro corresponds to the absence of any isolating effect of the river under conditions of tectonic stability. In the Late Pleistocene, under the dominance of tectonic uplift and increasing isolating role of rivers, several subspecies were formed: S. superciliosus palaeodesnensis and S. superciliosus fulvoides on the left bank and another form on the right bank that was morphologically similar to S. major. The major-like form disappeared in the Holocene being replaced by S. s. fulvoides, which came from the Left-Bank Dnipro area.

scholarly journals Elements of the Fifth Group of the Periodic System of D.I. Mendeleev – the Elements of Life

Vestnik RFFI ◽  
2019 ◽  
pp. 26-45
Author(s):  
Almir S. Gazizov ◽  
Yulia M. Sadykova ◽  
Elmira M. Gibadullina ◽  
Alexander R. Burilov ◽  
Lyudmila K. Kibardina ◽  
...  
Keyword(s):  
Periodic System ◽  
Chemical Elements ◽  
Human Life ◽  
Chemical Compounds ◽  
Popular Science ◽  
History Of ◽  
Living Nature ◽  
Living Organisms ◽  
Nitrogen Phosphorus

In the popular science review, dedicated to the 150th anniversary of the first publication of the Periodic Table of chemical elements by D.I. Mendeleev, the elements of the 5th (main) Group (namely nitrogen, phosphorus, arsenic, antimony, and bismuth) are considered. The history of these elements discovery and some their properties are shortly described. The elements of the fifth group are also called “the elements of life”, which is linked with both the development of living organisms themselves and their compounds importance for human life. The review confirms this thesis in a popular-science form, using the available literature data on the role of chemical compounds of Group 5th elements in the development of living nature as well as in the progress of human civilization.

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