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2011 | 9 | 4 | 598-604
Tytuł artykułu

Assessment of different sorbents efficiency for solid phase extraction of aquatic humic acids

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In the present study, a simple procedure for the isolation by solid-phase extraction (SPE) and quantification by UV-Vis spectrometry (400 nm) of the humic acids (HAs) in the natural waters was developed. Seven different sorbents: Porapak P (polystyrene-divinylbenzene copolymer), Florisil (chemical composition: 84.0% SiO2, 15.5% MgO and 0.5% Na2SO4), Silica gel C18 (octadecyl silane), Strata X (surface modified polystyrene-divinylbenzene), Strata NH2 (silica-based trifunctional amino ligand), Strata SAX (silica-based trifunctional quaternary amine) and Strata C18-E (silica-based trifunctional C18 with hydrophobic end-capping of silanols) were tested. The HAs, adsorbed on SPE cartridges, were eluted using: NaOH (0.1 M), sodium dodecyl sulphate (SDS) (20 g L−1), and a 1:1 v/v mixture of SDS (20 g L−1) and NaOH (0.1 M). The extraction efficiency was evaluated by comparing the HAs recovery levels. The repeatability of results was estimated by the relative standard deviation (RSD). The data confirmed that Porapak P, Silica gel C18, Florisil, Strata NH2 and Strata X could be good alternatives for the traditional isolation of the aquatic HAs with XAD resin. The proposed method was applied for the determination of HAs in some waters sampled from the Western Romanian Plain. The content of HAs was correlated with the arsenic concentration and total organic carbon (TOC) level. [...]
Wydawca

Czasopismo
Rocznik
Tom
9
Numer
4
Strony
598-604
Opis fizyczny
Daty
wydano
2011-08-01
online
2011-06-04
Twórcy
autor
  • Faculty of Environmental Science and Engineering, Babeş-Bolyai University, Cluj-Napoca, 400294, Romania, robaacarmen@yahoo.com
  • Faculty of Environmental Science and Engineering, Babeş-Bolyai University, Cluj-Napoca, 400294, Romania
autor
  • Faculty of Environmental Science and Engineering, Babeş-Bolyai University, Cluj-Napoca, 400294, Romania
  • Faculty of Environmental Science and Engineering, Babeş-Bolyai University, Cluj-Napoca, 400294, Romania
autor
  • National Institute for Research and Development of Optoelectronics, Bucharest — Research Institute for Analytical Instrumentation, Cluj-Napoca, 400293, Romania
autor
  • National Institute for Research and Development of Optoelectronics, Bucharest — Research Institute for Analytical Instrumentation, Cluj-Napoca, 400293, Romania
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-011-0035-5
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