Sediment dating and groundwater residence time in the lower basin of the Var river by radiochemistry and γ-ray spectrometry methods

This study reports on the determination of trace element (TE)-Li, As, Co, Cs, Cu, Pb, U, and Zn-and major element (ME)-Si, Al, Fe, Mg, Ca, Mn, Na, and K-concentrations in 18 riverbed sediments and a sediment core from the Var River catchment using inductively coupled plasma mass spectrometry (ICP-MS). The results were compared with those of a reference sediment core, and the contribution of clay and organic carbon contents in the distribution of TE and ME in the sediment samples was investigated. The mean concentrations of the ME were comparable in both core and riverbed samples and were within the natural averages. In the case of TE, the concentrations were lower in riverbed sediment samples than those found in the sediment core. High mean concentration of As was observed (7.6 μg g(-1)) in both core and riverbed sediments, relatively higher than the worldwide reported values. The obtained data indicated that the natural high level of arsenic might be originated from the parent rocks, especially metamorphic rocks surrounding granites and from Permian sediments. Statistical approach, viz., Pearson correlation matrix, was applied to better understand the correlation among TE in both riverbed and sediment core samples. No significant metallic contamination was detected in the low Var valley despite of the localization of several industrial facilities. Therefore, results confirm that the concentrations of the TE obtained in the riverbed sediments could be considered as a baseline guide for future pollution monitoring program.

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Distribution and baseline values of trace elements in the sediment of Var River catchment, southeast France

Abdullah

Michel

Funel

et al. 2014

Environ Monit Assess

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Spatial and vertical distributions of natural and anthropogenic radionuclides and cesium fractionation in sediments of the Var river and its tributaries (southeast France)

Alabdullah

Michel

Barci

et al. 2013

J Radioanal Nucl Chem

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Sediment dating and groundwater residence time in the lower basin of the Var river by radiochemistry and γ-ray spectrometry methods

Cited by 2 publications

References 6 publications

Distribution and baseline values of trace elements in the sediment of Var River catchment, southeast France

Distribution and baseline values of trace elements in the sediment of Var River catchment, southeast France

Spatial and vertical distributions of natural and anthropogenic radionuclides and cesium fractionation in sediments of the Var river and its tributaries (southeast France)

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