Skip to main content
Publications | Persons | Institutes | Projects
[ report an error in this record ]basket (0): add | show Print this page

Synthesized mercaptopropyl nanoporous resins in DGT probes for determining dissolved mercury concentrations
Gao, Y.; De Canck, E.; Leermakers, M.; Baeyens, W.; Van Der Voort, P. (2011). Synthesized mercaptopropyl nanoporous resins in DGT probes for determining dissolved mercury concentrations. Talanta 87: 262-267. http://dx.doi.org/10.1016/j.talanta.2011.10.012
In: Talanta. Elsevier: Amsterdam. ISSN 0039-9140; e-ISSN 1873-3573, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal
Author keywords
    Diffusive Gradients in Thin films; Labile Hg; SH-SBA; SH-PMO; SQR; SH-KG

Authors  Top 
  • Baeyens, W., more
  • Van Der Voort, P., more

Abstract
    3-Mercaptopropyl functionalized SBA-15 (SH-SBA) and 3-mercaptopropyl functionalized ethenylene bridged periodic mesoporous organosilica (SH-PMO) were included in a Diffusive Gradients in Thin film (DGT) probe and compared to similar commercially available resins also containing thiol functional groups, such as Sumichelate Q10R (SQR) and 3-mercaptopropyl functionalized silica gel (SH-KG), and also to the Chelex-100 resin for the determination of labile Hg concentrations. An agarose gel was used as the diffusive gel because the classic polyacrylamide gel shows more than 20% of Hg adsorption. According to our results, the Chelex-100 resin presents a much lower affinity for Hg than the thiol based resins. The non-linear accumulation profile of mercury with time for the Chelex-100 resin makes it in fact impossible to use Fick's law for estimating the diffusion coefficient of Hg. The 4 other resins all show a linear accumulation profile of Hg with time. Although the highest accumulation rate is observed for SH-PMO followed by SQR, SH-SBA and SH-KG, these values do not differ very much.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors