IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Two-dimensional images of dissolved sulfide and metals in anoxic sediments by a novel diffusive gradients in thin film probe and optical scanning techniques
Gao, Y.; van de Velde, S.; Williams, P.; Baeyens, W.; Zhang, H. (2015). Two-dimensional images of dissolved sulfide and metals in anoxic sediments by a novel diffusive gradients in thin film probe and optical scanning techniques. Trends Anal. Chem. 66: 63-71. dx.doi.org/10.1016/j.trac.2014.11.012
In: Trends in Analytical Chemistry. Elsevier: Amsterdam. ISSN 0165-9936, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine
Author keywords
    DGT; Diffusive gradients in thin film; Dissolved sulfide;Inductively-coupled plasma; Laser ablation; LA-ICP-MS; Massspectrometry; Remobilization; Trace metal; 2D image

Authors  Top 
  • Gao, Y., more
  • van de Velde, S., more
  • Williams, P.
  • Baeyens, W., more
  • Zhang, H.

Abstract
    A novel diffusive gradients in thin film probe developed comprises diffusive gel layer of silver iodide (AgI) and a back-up Microchelex resin gel layer. 2D high-resolution images of sulfide and trace metals were determined respectively on the AgI gel by densitometric analysis and on the Microchelex resin layer with laser-ablation-inductively-coupled plasma mass spectrometry (LA-ICP-MS). We investigated the validity of the analytical procedures used for the determination of sulfide and trace metals. We found low relative standard deviations on replicate measurements, linear trace-metal calibration curves between the LA-ICP-MS signal and the true trace-metal concentration in the resin gel, and a good agreement of the sulfide results obtained with the AgI resin gel and with other analytical methods. The method was applied on anoxic sediment pore waters in an estuarine and marine system. Simultaneous remobilization of sulfide and trace metals was observed in the marine sediment.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors