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2010 | 8 | 1 | 116-125
Tytuł artykułu

Adsorption of mercury species on river sediments - effects of selected abiotic parameters

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Abiotic parameters (pH, temperature, current velocity, mercury species concentration, and sediment and aqueous media composition) influence mercury species (MeHg+, EtHg+, PhHg+ and inorganic Hg2+) adsorption on river sediments. The highest amount of adsorbed MeHg+ and EtHg+ (82–93% and 85–91% for static and agitated system, respectively) occurred at pH 3–4. For PhHg+ the maximum adsorption (90% and 95% for static and agitated systems) was located over the broad 3–10 pH range, while for Hg2+ (94% and 97% for static and agitated systems) it was at pH ∼ 3. Temperature (4.5–60°C) influenced the adsorption rate but not the quantity. Both rate and quantity increased in the order: static 2+ adsorption about 67%. Cations at pH 5.2 reduced either the adsorption rate (Ca2+, Al3+) or the total adsorption (Zn2+, Fe3+). Positive correlations were found between sediment C, N, S content as well as cation exchange capacity (CEC) with mercury adsorption (R = 0.45–0.66, 0.56–0.89, 0.45–0.61 and 0.55–0.73, respectively) while negative correlations were observed with Fe and Al (R = −0.63 to −0.90 and −0.65 to −0.86, respectively). [...]
Słowa kluczowe
Wydawca

Czasopismo
Rocznik
Tom
8
Numer
1
Strony
116-125
Opis fizyczny
Daty
wydano
2010-02-01
online
2010-02-16
Twórcy
  • Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, 613 00, Brno, Czech Republic
  • Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, 613 00, Brno, Czech Republic
  • Department of Chemistry, Masaryk University, 611 37, Brno, Czech Republic
  • Department of Chemistry, Masaryk University, 611 37, Brno, Czech Republic
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-009-0128-6
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