Geochemistry of trace elements in surface waters of the Arno River Basin, northern Tuscany, Italy

Cortecci, G.; Boschetti, Tiziano; Dinelli, Enrico; Cidu, Rosa; Podda, Francesca; Doveri, Marco

doi:10.1016/j.apgeochem.2009.03.002

Cited by 38 publications

(22 citation statements)

References 15 publications

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“…Several studies showed that pH may also influence trace element mobility in rivers by controlling sorption process [40][41][42]. However, in Ganges, Brahmaputra and G-B confluence, neither seasonal variations in pH (Table 1) nor clear relationships between dissolved arsenic concentrations and pH were observed.…”

Section: The Gangesmentioning

confidence: 92%

Seasonal Variations of Arsenic in the Ganges and Brahmaputra River, Bangladesh

et al. 2011

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Dissolved arsenic concentrations in the Ganges, Brahmaputra Rivers and confluence of these two rivers show important seasonal variations and maximum arsenic concentrations are observed during the monsoon season (July–October). These seasonal variations of dissolved arsenic concentrations were closely related to intense river-water discharge during the monsoon season with high arsenic-rich suspended particulate matter (SPM) loads. These arsenic-rich SPM mainly are primarily originated from erosion of agricultural land in upstream region irrigated with arsenic contaminated shallow groundwater and to some extent weathering of bed rocks. Considerable amount of iron and manganese enriched SPM adsorbs arsenic and increased water temperature in the summer accelerates microbially-mediated reduction of arsenic (V) to more soluble arsenic (III). Additionally, dissolution of solid arsenic-bearing mineral phases also attributes to high arsenic concentrations in water and causes seasonal variations. It is realized that the SPM of these two major rivers primarily controls the arsenic inputs into the Ganges-Brahmaputra-Meghna delta system. The cycling of arsenic in this delta is related to the monsoon seasonal dynamics, land use patterns and biogeochemical processes.Keywords: Arsenic; Ganges; Brahmaputra; Seasonal variation; Bangladesh.© 2012 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi: http://dx.doi.org/10.3329/jsr.v4i1.7820J. Sci. Res. 4 (1), 65-75 (2012)

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Section: The Gangesmentioning

confidence: 92%

Seasonal Variations of Arsenic in the Ganges and Brahmaputra River, Bangladesh

et al. 2011

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“…The direct determination method consists in separating the suspensions on filtering membranes of various porosities, followed by subsequent digestion and quantitative assessment of the contaminants from the separated material, by means of an adequate spectrometric technique (Blo et al, 2000;Nordstrom et al, 1999;Ödman et al, 1999;Ollivier et al, 2011;Yeager et al, 2005). Through the indirect method, both the filtered and the unfiltered water samples are analyzed in parallel, and the resulting concentration difference is considered to represent the concentration of the element bound on the SPM (Cidu & Frau, 2009;Cortecci et al, 2009;Gammons et al, 2005;Pokrovsky & Schott, 2002).…”

Section: Suspended Particulate Matter (Spm) Fractionationmentioning

confidence: 99%

Particulate Phases Possibly Conveyed from Nuclear Waste Repositories by Groundwater

Marin¹

2012

Radioactive Waste

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“…Once a metal is released into the aquatic environment, a portion of the metal will be transferred to sediment through being adsorbed onto suspended matter and the sedimentation of the suspended matter (Cortecci et al 2009, Zwolsman et al 1993. Metals in sediment will be present in both the particulate phase and the dissolved phase (i.e., in the pore water), and these phases will interact with each other and with the overlying water at the sedimentwater interface.…”

Section: Introductionmentioning

confidence: 99%

Distributions, fluxes, and toxicities of heavy metals in sediment pore water from tributaries of the Ziya River system, northern China

Zhu

Shan

Li³

et al. 2015

Environ Sci Pollut Res

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The distributions and mobilities of metals in pore water strongly influence the biogeochemical processes and bioavailabilities of metals at sediment-water interfaces. Heavy metal concentrations were measured in pore water samples from the Shaocun River (SR), the Wangyang River (WR), and the Xiao River (XR), tributaries of the Ziya River system, northern China. The aim was to assess heavy metal contamination in the system and the associated environmental risks. The mean Cd, Cr, Cu, Ni, Pb, and Zn concentrations in all three tributaries were 0.373, 57.1, 37.7, 20.4, 14.0, and 90.6 μg/L, respectively. The calculated Cd, Cr, Cu, Ni, Pb, and Zn diffusion fluxes in the rivers were −0.427 to 0.469, −71.8 to 42.5, 3.16 to 86.6, 5.29 to 14.0, 7.24 to 19.0, and −204 to 21.9 μg/(m 2 day), respectively, showing that the pore water was a source of most of the metals to the water column. Only Cu and Pb in the XR and Cu in the WR exceeded the final chronic value recommended by the US Environmental Protection Agency, but the metals in the WR sediment could have caused toxic effects.These results are likely to be useful to the authorities responsible for sustainable river management.

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Geochemistry of trace elements in surface waters of the Arno River Basin, northern Tuscany, Italy

Cited by 38 publications

References 15 publications

Seasonal Variations of Arsenic in the Ganges and Brahmaputra River, Bangladesh

Seasonal Variations of Arsenic in the Ganges and Brahmaputra River, Bangladesh

Particulate Phases Possibly Conveyed from Nuclear Waste Repositories by Groundwater

Distributions, fluxes, and toxicities of heavy metals in sediment pore water from tributaries of the Ziya River system, northern China

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