Results 21 to 30 of about 29,313 (262)

Heavy metals in the bottom sediments of the coastal zone of the eastern part of the Gulf of Finland [PDF]

open access: yesE3S Web of Conferences, 2021
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.
Kudryavtseva Valentina   +2 more
doaj   +1 more source

137Cs, 40K and 210Po in abiotic components of aquatic ecosystems two rivers in the Can Gio biosphere reserve, Vietnam

open access: yesNuclear Engineering and Technology, 2022
Determination of 137Cs, 40K and 210Po in water, bottom sediments and suspended matter of river systems of the Can Gio Biosphere Reserve, Vietnam was carried out. The average activity concentration of 137Cs in waters of Ca Gau and Long Tau was 0.89 ± 0.14
Ilya G. Sidorov   +5 more
doaj   +1 more source

Features of heavy metals distribution in bottom sediments of the rivers of Ukraine

open access: yesМінеральні ресурси України, 2018
The chemical composition of bottom sediments is an important indicator of the ecological state of both water systems and watershed areas, since contaminated bottom sediments are a potential source of secondary pollution of aquatic systems.
N. G. Lyuta
doaj   +1 more source

Accumulation of sadmium and zinc in bottom sediments of different waters of Lithuania [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
Distribution of cadmium and zinc in the bottom sediments of different waters of Lithuania was investigated using flame atomic absorption spectrometry (FAAS).
STASYS TAUTKUS   +2 more
doaj   +3 more sources

Determination of heavy metal background concentration in bottom sediment and risk assessment of sediment pollution by heavy metals in the Hrazdan River (Armenia)

open access: yesApplied Water Science, 2019
The purpose of this study is to determine background concentrations of heavy metals in bottom sediments, as well as to characterize potential danger of heavy metals in bottom sediments of the Hrazdan River.
Vahagn Petrosyan   +2 more
doaj   +1 more source

MODERN HYDROACOUSTIC METHODS FOR STUDYING THE BOTTOM RELIEF AND BOTTOM SEDIMENTS OF THE DNIEPER RIVER: WAYS OF USING IT IN THE EXPLORATION AND DEVELOPMENT OF RIVER SAND DEPOSITS

open access: yesГеологія і корисні копалини Світового океану, 2022
The difficult state of the economy of the state entailed a practical lack of funding for geological survey, prospecting work, a comprehensive geological study of the territory of Ukraine, natural and anthropogenic changes in the geological environment in
Fedoseienkov S.H.
doaj   +1 more source

ASSESSMENT OF CHLORIDE ION POLLUTION OF SMALL RIVERS IN THE NIZHNEVARTOVSK REGION

open access: yesSiberian Journal of Life Sciences and Agriculture, 2020
The importance in assessing the environmental situation in the Khanty-Mansi Autonomous Okrug is represented by the concentration of chemicals in surface waters and bottom sediments, which characterize the technogenic flows of pollutants in the areas of ...
Denis Andreevich Alagulov   +1 more
doaj   +1 more source

Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies

open access: yesVestnik MGTU, 2020
Bioassay is used to study bottom sediment ecotoxicity in the central and eastern parts of the Barents Sea. The effect of sediment elutriates on the growth of microalgae Phaedactylum tricornutum Bohlin and survival of brine shrimp Artemia salina L. larvae
Gorbacheva E. A.
doaj   +1 more source

ACCUMULATION OF HEAVY METALS IN COLLECTOR BOTTOM SEDIMENTS TAKING INTO ACCOUNT THE SURFACE WATERSHED DIFFERENTIATION BY SOURCES OF ANTHROPOGENIC IMPACT

open access: yesМелиорация и гидротехника
Purpose: to study the degree of pollution of bottom sediments and accumulation of heavy metals in them in collector sections, differentiated by sources of anthropogenic impact on the surface watershed. Materials and methods.
Tatyana I. Drovovozova   +3 more
doaj   +1 more source

Metal content in bottom sediments of the central part of the Pechora Sea in the current period

open access: yesVestnik MGTU, 2019
Based on the data from the marine researches of Knipovich Polar Research Institute of Marine Fisheries and Oceanography (PINRO) carried out in the period of 2010–2015, the content of some metals in bottom sediments of the central part of the Pechora Sea ...
Novikov M. A., Titov O. V., Titov O. V.
doaj   +1 more source

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