Abstract
The techniques of diffusive equilibrium in thin films (DET) and diffusive gradients in thin films
(DGT) were used for the first time in the Outer Section of Songkhla Lake in order to obtain high resolution
profiles of total dissolved and labile trace metals in the sediment porewater. These tools provide useful
information on sediment biogeochemistry and benthic fluxes. DGT measures labile metal species in situ by
immobilizing them on a resin gel after diffusion through a diffusive gel whereas for DET equilibrium is
established between the DET gel and the porewater. The expedition was carried in July, 2011 under the
collaborative research program between the Laboratory of Analytical and Environmental Chemistry, Vrije
Universiteit Brussel and the Marine and Coastal Resources Institute, Prince of Songkla University. Six DET
probes and six DGT probes were deployed at the mouths of the Phawong, Samrong and U-Taphao canals.
(DGT) were used for the first time in the Outer Section of Songkhla Lake in order to obtain high resolution
profiles of total dissolved and labile trace metals in the sediment porewater. These tools provide useful
information on sediment biogeochemistry and benthic fluxes. DGT measures labile metal species in situ by
immobilizing them on a resin gel after diffusion through a diffusive gel whereas for DET equilibrium is
established between the DET gel and the porewater. The expedition was carried in July, 2011 under the
collaborative research program between the Laboratory of Analytical and Environmental Chemistry, Vrije
Universiteit Brussel and the Marine and Coastal Resources Institute, Prince of Songkla University. Six DET
probes and six DGT probes were deployed at the mouths of the Phawong, Samrong and U-Taphao canals.
Original language | English |
---|---|
Number of pages | 31 |
Journal | International Proceedings of Chemical, Biological & Environmenta |
Volume | 66 |
Publication status | Published - 2014 |
Event | IEEA 2014 - Shanghai, China Duration: 27 Mar 2014 → 28 Mar 2014 |
Keywords
- DET
- DGT
- Songkhla Lake
- metals
- sediment porewaters