Fifty-year sedimentary record of heavy metal pollution (Cd, Zn, Cu, Pb) in the Lot River reservoirs (France).
TL;DR: 137Cs activities and heavy metal concentration-depth profiles from sediment cores retrieved in 2001 from three reservoirs in the Lot River allow establishing a connection between the temporal evolution of the heavy metal pollution and historical changes in smelting and waste-treatment proceedings.
About: This article is published in Environmental Pollution.The article was published on 2004-12-01. It has received 451 citations till now.
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TL;DR: The concentration of heavy metals in several sites, assessed in water, soil and sediment samples, affected by different pollution sources are reviewed, showing how human activities impact natural media and how the pollution spreads.
490 citations
TL;DR: The spatial and temporal distribution of heavy metals in water, sediment and fish (dry weight basis) of Buriganga River, Bangladesh were determined by atomic absorption spectrophotometer as discussed by the authors.
Abstract: The spatial and temporal distribution of heavy metals in water, sediment and fish (dry weight basis) of Buriganga River, Bangladesh were determined by atomic absorption spectrophotometer. In water concentration of Pb, Cd, Ni, Cu and Cr varied seasonally and spatially from 58.17 to 72.45I¼g/L, 7.08 to 12.33I¼g/L, 7.15 to 10.32I¼g/L, 107.38 to 201.29I¼g/L and 489.27 to 645.26I¼g/L, respectively. Chromium was the most abundant in the water of Balughat during pre-monsoon, whereas, Cd was the most scarce in the water of Shawaryghat during monsoon. The sediment also showed spatial and temporal variation of Pb, Cd, Ni, Cu and Cr ranged from 64.71 to 77.13 mg/kg, 2.36 to 4.25 mg/kg, 147.06 to 258.17 mg/kg, 21.75 to 32.54 mg/kg and 118.63 to 218.39 mg/kg, respectively. Among all the metals studied in sediment, Ni was the highest at Foridabad during pre-monsoon and Cd was the lowest at Shawaryghat during monsoon. In six species of fish studied, the concentration of Pb, Cd, Ni, Cu and Cr varied seasonally from 8.03 to 13.52 mg/kg, 0.73 to 1.25 mg/kg, 8.25 to 11.21 mg/kg, 3.36 to 6.34 mg/kg and 5.27 to 7.38 mg/kg, respectively. Of the five metals studied Pb concentration was the highest in Gudusia chapra during monsoon, in contrast, Cd concentration was the lowest in Cirrhinus reba during post-monsoon. Some of the heavy metals’ concentrations are higher than the recommended value, which suggest that the Buriganga is to a certain extent a heavy metal polluted river and the water, sediment and fish are not completely safe for health.
336 citations
TL;DR: This first biomonitoring study of metal exposure in the African Copperbelt reveals a substantial exposure to several metals, especially in children, and urinary Co concentrations found in this population are the highest ever reported for a general population.
226 citations
TL;DR: In a metal-polluted stream in the Riou Mort watershed in SW France, periphytic diatom communities were affected by the metal but displayed induced tolerance, seen through structural impact (dominance of small, adnate species) as well as morphological abnormalities particularly in the genera Ulnaria and Fragilaria.
208 citations
TL;DR: In this article, a non-technical overview of the importance of hydrology-controlled transport through catchment systems as the link between hydrology and water quality is provided. But the authors do not consider the impact of transit times on the quality of the model.
Abstract: In spite of trying to understand processes in the same spatial domain, the catchment hydrology and water quality scientific communities are relatively disconnected and so are their respective models. This is emphasized by an inadequate representation of transport processes, in both catchment-scale hydrological and water quality models. While many hydrological models at the catchment scale only account for pressure propagation and not for mass transfer, catchment scale water quality models are typically limited by overly simplistic representations of flow processes. With the objective of raising awareness for this issue and outlining potential ways forward we provide a nontechnical overview of (1) the importance of hydrology-controlled transport through catchment systems as the link between hydrology and water quality; (2) the limitations of current generation catchment-scale hydrological and water quality models; (3) the concept of transit times as tools to quantify transport; and (4) the benefits of transit time based formulations of solute transport for catchment-scale hydrological and water quality models. There is emerging evidence that an explicit formulation of transport processes, based on the concept of transit times has the potential to improve the understanding of the integrated system dynamics of catchments and to provide a stronger link between catchment-scale hydrological and water quality models. WIREs Water 2016, 3:629-657. doi: 10.1002/wat2.1155 For further resources related to this article, please visit the .
200 citations
References
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TL;DR: In this paper, a new calculation of the crustal composition is based on the proportions of upper crust (UC) to felsic lower crust (FLC) to mafic lower-crust (MLC) of about 1.6:0.4.
5,317 citations
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09 Mar 2012
TL;DR: The Handbook of Geochemistry Editor-in-chief: K.H. Wedepohl Series Editors: C.W. Shaw, K.K. Turekian, J.M. Zemann as mentioned in this paper
Abstract: Submission information at the series homepage and springer.com/authors Order online at springer.com ▶ or for the Americas call (toll free) 1-800-SPRINGER ▶ or email us at: customerservice@springer.com. ▶ For outside the Americas call +49 (0) 6221-345-4301 ▶ or email us at: customerservice@springer.com. Handbook of Geochemistry Editor-in-chief: K.H. Wedepohl Series Editors: C.W. Correns, D.M. Shaw, K.K. Turekian, J. Zemann
1,447 citations
TL;DR: In this paper, the authors measured sediment accumulation rates by comparing the vertical distribution of Cs in sediments with the temporal deposition of fallout Cs from the atmosphere to locate sediment horizons, which can be used to determine sediment accumulation rate in a wide variety of depositional environments including reservoirs, lakes, wetlands, coastal areas and floodplains.
Abstract: Radioactive fallout Cs (cesium-137) deposited across the landscape from atmospheric nuclear tests is strongly absorbed on soil particles limiting its movement by chemical and biological processes Most Cs movement in the environment is by physical processes; therefore, Cs is a unique tracer for studying erosion and sedimentation Cesium-137 loss from a watershed has been shown to correlate strongly with soil loss calculated by the Universal Soil Loss Equation (USLE) or measured from small runoff plates By measuring spatial patterns of Cs in vertical and horizontal planes across the landscape, rates of soil loss or deposition can be measured for different parts of a watershed Even within landscape units, redistribution of soil can be mapped and erosion or deposition rates for different parts of individual fields measured and mapped Sediment accumulation rates can be measured by comparing the vertical distribution of Cs in sediments with the temporal deposition of fallout Cs from the atmosphere to locate sediment horizons Using these dated sediment horizons, sediment accumulation rates can be measured Interpretations about the location of these dated horizons must consider particle size of the sediments, reworking of deposited sediments, diffusional movement of Cs, and time rates of physical process in the sedimentation process The Cs technique can be used to determine sediment accumulation rates in a wide variety of depositional environments including reservoirs, lakes, wetlands, coastal areas, and floodplains The bibliography shows that Cs has been used widely for studying erosion and sedimentation in many different environments around the world
1,181 citations
TL;DR: In this paper, a geochemical model was used to predict copper concentrations in a river system affected by acid mine drainage and tailings inputs, showed good agreement between measured and predicted values.
570 citations
TL;DR: Capping seems to be a promising approach for a low-cost remediation of contaminated anoxic sediment of the Mulde reservoir, which confirmed the necessity of sediment remediation in the reservoir.
348 citations
"Fifty-year sedimentary record of he..." refers background in this paper
..., 2000), bioturbation (e.g. Forster et al., 1999; Zoumis et al., 2001) or resuspension due to dredging (e....
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