Simultaneous Measurement of Trace Metal and Oxyanion Concentrations in Water using Diffusive Gradients in Thin Films with a Chelex–Metsorb Mixed Binding Layer

2013 ◽  
Vol 86 (1) ◽  
pp. 427-434 ◽  
Author(s):  
Jared G. Panther ◽  
William W. Bennett ◽  
David T. Welsh ◽  
Peter R. Teasdale
Keyword(s):  
Thin Films ◽  
Trace Metal ◽  
Simultaneous Measurement ◽  
Diffusive Gradients

Response of diffusive equilibrium in thin films (DET) and diffusive gradients in thin films (DGT) trace metal profiles in sediments to phytodetritus mineralisation

2012 ◽  
Vol 9 (1) ◽  
pp. 41 ◽  
Author(s):  
Yue Gao ◽  
Martine Leermakers ◽  
Annelies Pede ◽  
Aurelie Magnier ◽  
Koen Sabbe ◽  
...  
Keyword(s):  
Thin Films ◽  
Trace Metals ◽  
Trace Metal ◽  
Phytoplankton Bloom ◽  
Marine Ecosystem ◽  
Trace Metal Concentration ◽  
Water Interface ◽  
Overlying Water ◽  
Study Laboratory ◽  
Diffusive Gradients

Environmental contextContaminated sediments can have a large and lasting effect on marine ecosystems. It was discovered that significant amounts of pollutants, especially arsenic, were released from contaminated sediments during a phytoplankton bloom in the Belgian Continental Zone. Once released to the water column, these pollutants can accumulate up marine food chains and be a source of contaminants to humans. AbstractField data from the Belgian Continental Zone showed elevated trace metal concentrations at the sediment–water interface after the occurrence of a phytoplankton bloom. In the present study, laboratory incubation experiments were used to investigate the effect of the phytodetritus remineralisation process on the release of trace metals from contaminated muddy sediments. This remineralisation process was followed by the measurement of chlorophyll-a and dissolved organic carbon levels in the top sediment layers. Two gel techniques, diffusive equilibrium in thin films (DET) and diffusive gradients in thin films (DGT), were used to assess vertical metal profiles in the sediment pore waters and to calculate the metal effluxes. These metal effluxes compared very well with the trace metal concentration variations in the overlying water of the sediment. Much higher effluxes of Mn, Co and As were observed after 2 days of incubation in the microcosms which received additions of phytodetritus. This trend gradually decreased after 7 days of incubation, suggesting that the elevated efflux of trace metals was proportional to the quantity of phytodetritus mineralised at the sediment–water interface. The release of large amounts of toxic elements from the sediments after phytoplankton blooms can therefore potentially affect the marine ecosystem in the Belgian Continental Zone.

Predicting trace metal bioavailability to chironomids in sediments by diffusive gradients in thin films

2018 ◽  
Vol 636 ◽  
pp. 134-141 ◽  
Author(s):  
Yan He ◽  
Changsheng Guo ◽  
Jiapei Lv ◽  
Song Hou ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Trace Metal ◽  
Metal Bioavailability ◽  
Diffusive Gradients

scholarly journals Assessment of trace metal binding kinetics in the resin phase of diffusive gradients in thin films

2012 ◽  
Vol 717 ◽  
pp. 143-150 ◽  
Author(s):  
Jacqueline L. Levy ◽  
Hao Zhang ◽  
William Davison ◽  
Jaume Puy ◽  
Josep Galceran
Keyword(s):  
Thin Films ◽  
Trace Metal ◽  
Metal Binding ◽  
Binding Kinetics ◽  
Resin Phase ◽  
Diffusive Gradients

Simultaneous measurement of fifteen rare earth elements using diffusive gradients in thin films

2018 ◽  
Vol 1031 ◽  
pp. 98-107 ◽  
Author(s):  
Yumin Yuan ◽  
Shiming Ding ◽  
Yan Wang ◽  
Liping Zhang ◽  
Mingyi Ren ◽  
...  
Keyword(s):  
Thin Films ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Simultaneous Measurement ◽  
Diffusive Gradients

Simultaneous measurement of Cr(III) and Cr(VI) in freshwaters with a single Diffusive Gradients in Thin Films device

Talanta ◽  
2016 ◽  
Vol 154 ◽  
pp. 533-538 ◽  
Author(s):  
Delphine Devillers ◽  
Rémy Buzier ◽  
Stéphane Simon ◽  
Adeline Charriau ◽  
Gilles Guibaud
Keyword(s):  
Thin Films ◽  
Simultaneous Measurement ◽  
Diffusive Gradients
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