Occurrence and distribution of microplastics in the surface water and sediment of two typical estuaries in Bohai Bay, China

2019 ◽  
Vol 21 (7) ◽  
pp. 1143-1152 ◽  
Author(s):  
Nan Wu ◽  
Ying Zhang ◽  
Xiaohan Zhang ◽  
Ze Zhao ◽  
Jiahui He ◽  
...  
Keyword(s):  
Surface Water ◽  
Bohai Bay ◽  
Water And Sediment

Estuaries are considered to be seriously polluted by microplastics.

Sewers and the Quality of Canals and Ditches in Amsterdam

1993 ◽  
Vol 27 (5-6) ◽  
pp. 61-67 ◽  
Author(s):  
E. Jacobs ◽  
J. W. van Sluis
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Sediment Quality ◽  
Water System ◽  
Water Systems ◽  
Sewer System ◽  
Water And Sediment ◽  
Combined Sewer ◽  
Water And Sediment Quality

The surface water system of Amsterdam is very complicated. Of two characteristic types of water systems the influences on water and sediment quality are investigated. The importance of the sewer output to the total loads is different for both water systems. In a polder the load from the sewers is much more important than in the canal basin. Measures to reduce the emission from the sewers are much more effective in a polder. The effect of these measures on sediment quality is more than the effect on water quality. Some differences between a combined sewer system and a separate sewer system can be found in sediment quality.

Taking the pulse of Mother Ganga - Revealing the visible and invisible water pollution crisis along the Ganges River

2021 ◽  
Author(s):  
Stefan Krause ◽  
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Land Use ◽  
Surface Water ◽  
River Network ◽  
Ganges River ◽  
Sediment Samples ◽  
Water And Sediment ◽  
The Ganges ◽  
Water And Sediment Samples

<p>It is probably hard to overestimate the significance of the River Ganges for its spiritual, cultural and religious importance. As the worlds’ most populated river basin and a major water resource for the 400 million people inhabiting its catchment, the Ganges represents one of the most complex and stressed river systems globally. This makes the understanding and management of its water quality an act of humanitarian and geopolitical relevance. Water quality along the Ganges is critically impacted by multiple stressors, including agricultural, industrial and domestic pollution inputs, a lack and failure of water and sanitation infrastructure, increasing water demands in areas of intense population growth and migration, as well as the severe implications of land use and climate change. Some aspects of water pollution are readily visualised as the river network evolves, whilst others contribute to an invisible water crisis (Worldbank, 2019) that affects the life and health of hundreds of millions of people.</p><p>We report the findings of a large collaborative study to monitor the evolution of water pollution along the 2500 km length of the Ganges river and its major tributaries that was carried out over a six-week period in Nov/Dec 2019 by three teams of more than 30 international researchers from 10 institutions. Surface water and sediment were sampled from more than 80 locations along the river and analysed for organic contaminants, nutrients, metals, pathogen indicators, microbial activity and diversity as well as microplastics, integrating in-situ fluorescence and UV absorbance optical sensor technologies with laboratory sample preparation and analyses. Water and sediment samples were analysed to identify the co-existence of pollution hotspots, quantify their spatial footprint and identify potential source areas, dilution, connectivity and thus, derive understanding of the interactions between proximal and distal of sources solute and particulate pollutants.</p><p>Our results reveal the co-existence of distinct pollution hotspots for several contaminants that can be linked to population density and land use in the proximity of sampling sites as well as the contributing catchment area. While some pollution hotspots were characterised by increased concentrations of most contaminant groups, several hotspots of specific pollutants (e.g., microplastics) were identified that could be linked to specific cultural and religious activities. Interestingly, the downstream footprint of specific pollution hotspots from contamination sources along the main stem of the Ganges or through major tributaries varied between contaminants, with generally no significant downstream accumulation emerging in water pollution levels, bearing significant implications for the spatial reach and legacy of pollution hotspots. Furthermore, the comparison of the downstream evolution of multi-pollution profiles between surface water and sediment samples support interpretations of the role of in-stream fate and transport processes in comparison to patterns of pollution source zone activations across the channel. In reporting the development of this multi-dimensional pollution dataset, we intend to stimulate a discussion on the usefulness of large river network surveys to better understand the relative contributions, footprints and impacts of variable pollution sources and how this information can be used for integrated approaches in water resources and pollution management.</p>

Effect of small-scale illegal mining on surface water and sediment quality in Ghana

2021 ◽  
pp. 1-26
Author(s):  
Humphrey Ferdinand Darko ◽  
Anthony Yaw Karikari ◽  
Anthony Appiah Duah ◽  
Bismark Awinbire Akurugu ◽  
Victor Mante ◽  
...  
Keyword(s):  
Surface Water ◽  
Sediment Quality ◽  
Small Scale ◽  
Illegal Mining ◽  
Water And Sediment ◽  
Water And Sediment Quality

scholarly journals Using Community Science to Reveal the Global Chemogeography of River Metabolomes

2020 ◽  
Author(s):  
Vanessa A. Garayburu-Caruso ◽  
Robert E. Danczak ◽  
James C. Stegen ◽  
Lupita Renteria ◽  
Marcy Mccall ◽  
...  
Keyword(s):  
Surface Water ◽  
Biogeochemical Cycles ◽  
Ultrahigh Resolution ◽  
Water And Sediment ◽  
Traditional Research ◽  
Observation Network ◽  
Significant Spatial Variation ◽  
Community Science ◽  
Key Aspects ◽  
River Corridor

AbstractRiver corridor metabolomes reflect organic matter (OM) processing that drives aquatic biogeochemical cycles. Recent work highlights the power of ultrahigh-resolution mass spectrometry for understanding metabolome composition and river corridor metabolism. However, there have been no studies on the global chemogeography of surface water and sediment metabolomes using ultrahigh-resolution techniques. Here, we describe a community science effort from the Worldwide Hydrobiogeochemistry Observation Network for Dynamic River Systems (WHONDRS) consortium to characterize global metabolomes in surface water and sediment that span multiple stream orders and biomes. We describe the distribution of key aspects of metabolomes including elemental groups, chemical classes, indices, and inferred biochemical transformations. We show that metabolomes significantly differ across surface water and sediment and that surface water metabolomes are more rich and variable. We also use inferred biochemical transformations to identify core metabolic processes shared among surface water and sediment. Finally, we observe significant spatial variation in sediment metabolites between rivers in the eastern and western portions of the contiguous United States. Our work not only provides a basis for understanding global patterns in river corridor biogeochemical cycles but also demonstrates that community science endeavors can enable global research projects that are unfeasible with traditional research models.

Heavy metal contamination in surface water and sediment of the Meghna River, Bangladesh

2017 ◽  
Vol 8 ◽  
pp. 273-279 ◽  
Author(s):  
Md. Simul Bhuyan ◽  
Muhammad Abu Bakar ◽  
Aysha Akhtar ◽  
M. Belal Hossain ◽  
Mir Mohammad Ali ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Surface Water ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Water And Sediment
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