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Journal
2012 | 10 | 4 | 1175-1182
Article title

Mercury determination and speciation analysis in surface waters

Content
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Languages of publication
EN
Abstracts
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. [...]
Publisher

Journal
Year
Volume
10
Issue
4
Pages
1175-1182
Physical description
Dates
published
1 - 8 - 2012
online
29 - 5 - 2012
Contributors
  • Faculty of Chemistry, University of Sofia “St. Kliment Ohridski”, 1164, Sofia, Bulgaria
author
  • Faculty of Chemistry, University of Sofia “St. Kliment Ohridski”, 1164, Sofia, Bulgaria
  • Faculty of Chemistry, University of Sofia “St. Kliment Ohridski”, 1164, Sofia, Bulgaria
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11532-012-0027-0
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