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Tytuł pozycji:

Development of a new binding phase for the diffusive gradients in thin films technique based on an ionic liquid for mercury determination.

Tytuł :
Development of a new binding phase for the diffusive gradients in thin films technique based on an ionic liquid for mercury determination.
Autorzy :
Elias G; Chemistry Department, University of Girona, C/ Maria Aurèlia Capmany, 69, 17003, Girona, Spain; Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.
Díez S; Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain.
Zhang H; Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.
Fontàs C; Chemistry Department, University of Girona, C/ Maria Aurèlia Capmany, 69, 17003, Girona, Spain. Electronic address: .
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Źródło :
Chemosphere [Chemosphere] 2020 Apr; Vol. 245, pp. 125671. Date of Electronic Publication: 2019 Dec 19.
Typ publikacji :
Journal Article
Język :
English
Journal Info :
Publisher: Elsevier Science Ltd Country of Publication: England NLM ID: 0320657 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1298 (Electronic) Linking ISSN: 00456535 NLM ISO Abbreviation: Chemosphere Subsets: MEDLINE
Imprint Name(s) :
Publication: Oxford : Elsevier Science Ltd
Original Publication: Oxford, New York, : Pergamon Press.
MeSH Terms :
Ionic Liquids*
Environmental Monitoring/*methods
Mercury/*analysis
Water Pollutants, Chemical/*analysis
Adsorption ; Diffusion ; Methods ; Polymers ; Quaternary Ammonium Compounds/chemistry
Contributed Indexing :
Keywords: Diffusive gradient in thin films; Ionic liquids; Mercury; Monitoring; Trioctylmethylammonium thiosalicylate (TOMATS)
Substance Nomenclature :
0 (Ionic Liquids)
0 (Polymers)
0 (Quaternary Ammonium Compounds)
0 (Water Pollutants, Chemical)
5137-55-3 (trioctylmethylammonium)
FXS1BY2PGL (Mercury)
Entry Date(s) :
Date Created: 20191229 Date Completed: 20200421 Latest Revision: 20200421
Update Code :
20200716
DOI :
10.1016/j.chemosphere.2019.125671
PMID :
31883501
Czasopismo naukowe
Determining bioavailable trace concentrations of mercury (Hg) in water is still a challenging analytical task. In this study, we report a methodology for determining labile Hg in natural waters using newly developed sorbents. Silicon dioxide at a nanoparticle range (Si-np) and cellulose powder at a microparticle range (Cel-p), both modified with the ionic liquid trioctylmethylammonium thiosalicylate (TOMATS), have been tested as sorbents (sorb-TOMATS) for Hg(II) uptake from solution. These novel sorb-TOMATS materials were characterized, and parameters affecting the uptake were examined. A similar Hg(II) uptake efficiency (97%) and binding capacity (9 mg Hg/g) was obtained for both sorb-TOMATS, while only a 25% of Hg(II) was taken up using non-impregnated materials. Moreover, these sorb-TOMATS were effectively embedded in agarose gel and were tested as a novel binding phase for the Diffusive Gradients in Thin Films (DGT) technique. Research revealed Si(np)-TOMATS sorbent as a suitable binding phase in the DGT technique for Hg(II) measurements, since it also allowed the efficient elution of the bound Hg(II). This new binding phase showed strong linear correlation between the accumulated Hg(II) mass and deployment time, which is in agreement with the DGT principle. In summary, this novel sorbent has a great potential to improve Hg monitoring in natural waters when integrated it in the DGT design.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)

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