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2012 | 10 | 4 | 1175-1182
Tytuł artykułu

Mercury determination and speciation analysis in surface waters

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A sorbent L-cysteine grafted silica gel has been evaluated for separation and enrichment of dissolved inorganic i-Hg(II) and methylmercury CH3Hg(I) from surface waters at sub-µg L−1 concentrations. Chemical parameters for mercury species enrichment and separation have been optimized. Analytical schemes for the determination of Hg species, using selective column solid phase extraction (SPE) with continuous flow chemical vapor generation atomic absorption spectrometry (CF-CVG-AAS) or inductively coupled plasma-mass spectrometry (ICP-MS) were developed. Possibilities for on-site SPE enrichment were demonstrated as well. The limits of quantification were 1.5 and 5 ng L−1 for dissolved i-Hg(II) and CH3Hg(I) by CF-CVG-AAS and 1 and 2.5 ng L−1 by ICP-MS with relative standard deviations between 7–12% and 7–14%, respectively. The chemically modified SPE sorbent has demonstrated high regeneration ability, chemical and mechanical stability, acceptable capacity and good enrichment factors. Results for total dissolved mercury were in reasonable agreement with those from independent analyses by direct ICP-MS determinations for river waters and for estuarine water certified reference material. [...]
Wydawca

Czasopismo
Rocznik
Tom
10
Numer
4
Strony
1175-1182
Opis fizyczny
Daty
wydano
2012-08-01
online
2012-05-29
Twórcy
  • Faculty of Chemistry, University of Sofia “St. Kliment Ohridski”, 1164, Sofia, Bulgaria
  • Faculty of Chemistry, University of Sofia “St. Kliment Ohridski”, 1164, Sofia, Bulgaria
  • Faculty of Chemistry, University of Sofia “St. Kliment Ohridski”, 1164, Sofia, Bulgaria
Bibliografia
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  • [2] European Union Commission directive 2009/90/EC of 31 July 2009 laying down, pursuant to Directive 2000/60/EC of the European Parliament and of the Council, technical specifications for chemical analysis and monitoring of water status. OJEU 201, 36 (2009)
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-012-0027-0
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