The present pollution of river-bed sediments and soil in the Watarase-river basin and the Miyata-river basin: The pollution level after abandoned working of the Ashio copper mine and the Hitachi mine

Abstract In this study, measurements of electron spin resonance (ESR) signals from quartz grains from present-day river bed sediments of the Kizu River basin (western Japan) were used to estimate the mixing ratios of the possible source materials of these fluvial deposits. The dose-saturated ESR signal intensities obtained from the Al and Ti-Li centers in quartz grains were close to the range between the maximum and minimum intensities of their potential source rocks, meaning it was possible to estimate the mixing ratios of these sources. The results indicate that the dose-saturated Al and Ti-Li center ESR intensities can be used to quantitatively estimate the provenance of the sediments deposited by the Kizu River.

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Assessing the Pollution Level in the Kuban River Basin by Multivariate Cluster Analysis

Asian Journal of Water Environment and Pollution ◽

10.3233/ajw200053 ◽

2020 ◽

Vol 17 (4) ◽

pp. 73-80 ◽

Cited By ~ 1

Author(s):

Vera Snezhko ◽

Dmitrii Benin ◽

Artem Lukyanets ◽

Larisa Kondratenko

Keyword(s):

Cluster Analysis ◽

River Basin ◽

Ecological Status ◽

Chemical System ◽

Pollution Level ◽

Multivariate Cluster Analysis ◽

Water Chemical Composition ◽

Aluminium Copper ◽

Kuban River ◽

Multivariate Cluster

Considering features of hydrological conditions for hydro-chemical system, this paper analyses the performance of the hydro-ecological status of the Kuban river basin.. The results of the study on water chemical composition depending on the distance from the source are presented. By comparing the results with the reference values of water quality, increased aluminium, zinc, and copper content was established. Respective dendrograms of hydro-ecological studies obtained according to performed analysis for the Kuban River and its tributaries are presented. The relevance of the findings received is p<0.0005 and the correlation coefficient corresponds to 0.935...1. The results of multivariate cluster analysis showed that the Kuban basin has an increased content of particular heavy metals such as aluminium, copper, and zinc.

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The effect of the reunification of Germany on the water chemistry and ecology of selected rivers

Environmental Conservation ◽

10.1017/s0376892900038236 ◽

1996 ◽

Vol 23 (1) ◽

pp. 35-43 ◽

Cited By ~ 15

Author(s):

Michael S. Adams ◽

Hartmut Kausch ◽

Thomas Gaumert ◽

Karl-Ernst Krüger

Keyword(s):

Czech Republic ◽

Species Diversity ◽

Water Chemistry ◽

Total Nitrogen ◽

Chlorinated Hydrocarbons ◽

The Czech Republic ◽

Bed Sediments ◽

Potash Mining ◽

River Bed ◽

Substantial Decline

SummaryWe review several studies and provide new data previously unpublished to show that there has been a substantial decline in pollution of German riverine waters since the beginning of German political reunification in 1989. This reduction is notable in the Elbe, which originates in eastern Germany and the Czech Republic. Pollutants such as many of the chlorinated hydrocarbons have fallen substantially in concentration, while others such as arsenic have declined only slightly. Total nitrogen has declined by only a small amount, but ammonium has fallen substantially, while nitrates have increased. Nitrification is no longer a significant drain on oxygen in the tidal stretch of the Elbe, but decomposition of algae from the middle Elbe is now a greater problem in the lower Elbe. The river-bed sediments of the middle Elbe have a higher species diversity. Fisheries are improving, and concentrations of pollutants in fish such as eel and bream have declined significantly. The river Werra has also improved in quality due to reduction in salt loadings from earlier potash mining.

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Variations in trace element geochemistry in the Seine River Basin based on floodplain deposits and bed sediments

Hydrological Processes ◽

10.1002/(sici)1099-1085(19990630)13:9<1329::aid-hyp811>3.0.co;2-h ◽

1999 ◽

Vol 13 (9) ◽

pp. 1329-1340 ◽

Cited By ~ 68

Author(s):

Arthur J. Horowitz ◽

Michel Meybeck ◽

Zayed Idlafkih ◽

Erwan Biger

Keyword(s):

Trace Element ◽

River Basin ◽

Trace Element Geochemistry ◽

Element Geochemistry ◽

Seine River ◽

Bed Sediments ◽

Seine River Basin ◽

Floodplain Deposits

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Factors Influencing Desorption of Mercury from Bed Sediments

Canadian Journal of Earth Sciences ◽

10.1139/e75-094 ◽

1975 ◽

Vol 12 (6) ◽

pp. 1036-1040 ◽

Cited By ~ 17

Author(s):

Akira Kudo ◽

D. C. Mortimer ◽

J. Sanford Hart

Keyword(s):

Environmental Conditions ◽

Total Mercury ◽

Exposure Period ◽

Desorption Rate ◽

Overlying Water ◽

Bed Sediments ◽

Ottawa River ◽

Factors Influencing ◽

River Bed

The desorption rate of mercury from bed sediments was determined by a 10 week experiment. The rates ranged from 0.1 ng/cm2/day to 1.0 ng/cm2/day for Ottawa River bed sediments, depending on the environmental conditions. The rates decreased with an increase of exposure period to the water, but increased with an increase in the depth of bed sediments. The amount of mercury desorbed from bed sediments to overlying water was highly dependent on the volume (depth) of bed sediments. Calculations based on the experiment showed the half-lives of total mercury associated with bed sediments from as short as 2.1 years to as long as 1.8 × 102 years, depending on the depth of the bed sediments.

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Provenance and weathering control on river bed sediments of the eastern Tibetan Plateau and the Russian Far East

Chemical Geology ◽

10.1016/j.chemgeo.2008.06.002 ◽

2008 ◽

Vol 254 (1-2) ◽

pp. 52-72 ◽

Cited By ~ 62

Author(s):

Joniell B. Borges ◽

Youngsook Huh ◽

Seulgi Moon ◽

Hyeonjeong Noh

Keyword(s):

Tibetan Plateau ◽

Russian Far East ◽

Far East ◽

Eastern Tibetan Plateau ◽

Bed Sediments ◽

River Bed ◽

The Russian Far East

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Effect of Hyporheic Exchange on Macroinvertebrate Community in the Weihe River Basin, China

Water ◽

10.3390/w12020457 ◽

2020 ◽

Vol 12 (2) ◽

pp. 457

Author(s):

Qidong Lin ◽

Jinxi Song ◽

Carlo Gualtieri ◽

Dandong Cheng ◽

Ping Su ◽

...

Keyword(s):

River Basin ◽

Transport Processes ◽

Macroinvertebrate Community ◽

Hyporheic Exchange ◽

Macroinvertebrate Communities ◽

Fine Grained ◽

River Bed ◽

Weihe River ◽

Abundance And Diversity ◽

Weihe River Basin

The effect of hyporheic exchange on macroinvertebrates is a significant topic in ecohydraulics. A field study was conducted during May and June 2017 to investigate the impacts of magnitude and patterns of hyporheic exchange on the sediment macroinvertebrate community in the Weihe River basin. The results demonstrate that upwelling flows cause resuspension of riverbed sediment, increasing the proportion of swimmer groups (such as Baetidae) in the macroinvertebrate community. However, large resuspension of river bed sediment results in a reduced abundance of macroinvertebrates. By controlling the transport processes of dissolved oxygen (DO), dissolved organic carbon (DOC), nutrients, temperature, and different patterns of hyporheic exchange strongly influence the structure of macroinvertebrate communities. Downwelling is more likely to produce rich invertebrate communities than upwelling. The magnitude for the hyporheic flux of 150–200 mm/d was optimal for the macroinvertebrate community in the Weihe River Basin. Above or below this rate results in a decline in community abundance and diversity. We suggest that research is conducted to better understand the effects of hyporheic exchange across bedforms on macroinvertebrate communities. The study supports any activities to preserve the ecological functions and health of rivers dominated by fine-grained sediments.

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