Geochemical background in polluted river sediments: How to separate the effects of sediment provenance and grain size with statistical rigour?

Bábek, Ondřej; Grygar, Tomáš Matys; Faměra, Martin; Hron, Karel; Nováková, Tereza; Sedláček, Jan

doi:10.1016/j.catena.2015.07.003

Cited by 92 publications

(43 citation statements)

References 52 publications

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“…In particular, the Al/Si ratio is used as a proxy for particle size in sediment provenance research ( Figure 9) (Bouchez et al, 2011). Other ratios may indeed be effective, such as the Ca/Al ratio (Chen et al, 2014), along with particle size sensitive elements such as Ti (Bábek et al, 2015), or even simply clay content (Szava-Kovats, 2008). For example, studies reconstructing the evolution of metal enrichment ratios in sediment have also normalized elemental concentrations to Sc, Al, Si, Li or Th to minimize particle size impacts when examining contamination trends (Ayrault et al, 2010;Clark et al, 2014;Grosbois et al, 2012;Kersten and Smedes, 2002;Le Cloarec et al, 2011).…”

Section: Elemental Ratios and Elemental Normalisationmentioning

confidence: 99%

“…For example, studies reconstructing the evolution of metal enrichment ratios in sediment have also normalized elemental concentrations to Sc, Al, Si, Li or Th to minimize particle size impacts when examining contamination trends (Ayrault et al, 2010;Clark et al, 2014;Grosbois et al, 2012;Kersten and Smedes, 2002;Le Cloarec et al, 2011). Indeed, there are multiple approaches from the sediment provenance field (Armstrong-Altrin et al, 2015;Bábek et al, 2015;Owens et al, 2016;Singh et al, 2005) that present significant opportunities for enhancing the sediment source fingerprinting technique (e.g. Vale et al, 2016).…”

Section: Elemental Ratios and Elemental Normalisationmentioning

confidence: 99%

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The challenges and opportunities of addressing particle size effects in sediment source fingerprinting: A review

Laceby

Evrard

Smith

et al. 2017

Earth-Science Reviews

219

139

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Section: Elemental Ratios and Elemental Normalisationmentioning

confidence: 99%

Section: Elemental Ratios and Elemental Normalisationmentioning

confidence: 99%

The challenges and opportunities of addressing particle size effects in sediment source fingerprinting: A review

Laceby

Evrard

Smith

et al. 2017

Earth-Science Reviews

219

139

View full text Add to dashboard Cite

show abstract

“…Most chemical elements (both polluting and lithogenic) in chemically mature sediments are grain-size sensitive. For example, the aluminium to silicon (Al/Si) ratio is considered a "surrogate" for grain size of fluvial sediments [45][46][47], because, in mature sediments, this ratio increases with a growing percentage of clay fraction (usually dominated by aluminosilicate clay minerals) at the expense of sand (usually dominated by quartz). Conversely, the zirconium to rubidium (Zr/Rb) ratio in sediments is proportional to coarser particle content, in particular coarse silt and the finest sand [48,49], because Zr is mainly carried by zircon crystals with a typical grain size of 0.05 to 0.1 mm, and because in mature sediments, Rb occurs mainly in finer clay mineral particles.…”

Section: Pollution Mappingmentioning

confidence: 99%

Threat of Pollution Hotspots Reworking in River Systems: Case Study of the Ploučnice River (Czech Republic)

Elznicová

Grygar

Popelka

et al. 2019

IJGI

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As fluvial pollution may endanger the quality of water and solids transported by rivers, mapping and evaluation of historically polluted fluvial sediments is an urgent topic. The Ploučnice River and its floodplain were polluted by local uranium mining from 1971–1989. We have studied this river since 2013 using a combination of diverse methods, including geoinformatics, to identify pollution hotspots in floodplains and to evaluate the potential for future reworking. Archival information on pollution history and past flooding was collected to understand floodplain dynamics and pollution heterogeneity. Subsequently, a digital terrain model based on laser scanning data and data analysis were used to identify the sites with river channel shifts. Finally, non-invasive geochemical mapping was employed, using portable X-ray fluorescence and gamma spectrometers. The resulting datasets were processed with geostatistical tools. One of the main outputs of the study was a detailed map of pollution distribution in the floodplain. The results showed a relationship between polluted sediment deposition, past channel shifts and floodplain development. We found that increased concentration of pollution occurred mainly in the cut-off meanders and lateral channel deposits from the mining period, the latter in danger of reworking (reconnecting to the river) in the coming decades.

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“…This may cause sedimentation. Sediment sourced from estuaries and rivers will take place triggering the higher suspended sediment concentration in water (Bábek et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

An earth science topic Tidal Ellipses Analysis Based on Flow Model Hydrodynamic Data Acquisition in Mandeh Bay, West Sumatera

Wisha¹,

Dhiauddin

Gemilang

2019

J. Geoscience Eng. Environ. Technol.

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Mandeh Bay is threatened by sedimentation issue caused by the rapid development of marine tourism area which strongly impacts to the environmental degradation. Due to the semi-enclosed area of Mandeh Bay, the tidal current has a significant role in triggering vertical and horizontal transports within the bay. This study aimed to determine the characteristic of tidal current during the southwest monsoon. We developed a hydrodynamic model based on Navier-Stokes equations using a flexible mesh and tidal forecast in which the validation is performed by ADCP data. The simulation results will be used as the basic data to develop a model which depicts the elliptical pattern of tidal current constituents. Offshore rotary tidal currents which are originally semidiurnal reiterate the elliptical pattern every 6 hours and 12 minutes. The strongest semidiurnal current speeds are observed in the bay mouth ranged from 0.1-0.5 m.s-1. The tidal constituent ellipses are oriented more meridionally and in several areas oriented zonally. The current speed of is the highest at all which the speed is averagely one third of magnitude. While, the two main diurnal tidal constituents ( and ) have the maximum speeds approximately one fifth of magnitude. Thus, the domination of semidiurnal constituents may trigger sediment distribution and accumulation within the bay because of its twice tidal oscillations entering the bay.

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Geochemical background in polluted river sediments: How to separate the effects of sediment provenance and grain size with statistical rigour?

Cited by 92 publications

References 52 publications

The challenges and opportunities of addressing particle size effects in sediment source fingerprinting: A review

The challenges and opportunities of addressing particle size effects in sediment source fingerprinting: A review

Threat of Pollution Hotspots Reworking in River Systems: Case Study of the Ploučnice River (Czech Republic)

An earth science topic Tidal Ellipses Analysis Based on Flow Model Hydrodynamic Data Acquisition in Mandeh Bay, West Sumatera

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