Comparison between stability constants of cadmium and lead complexes with humic substances of different molecular weight isolated from Baltic Sea water

• Autorzy: Grzybowski W.
• Języki publikacji: EN

Abstrakty

EN

The complexation of cadmium and lead with humic substances was studied using differential pulse anodic stripping voltammetry and a standard addition technique. The titration was done for humic substances of different molecular weight that had been isolated from seawater and subsequently redissolved in organic-free seawater. The different molecular weight fractions were obtained by ultrafiltration using 1000 D (Dalton), 5000 D and 10 000 D pore size filters. Comparison of the calculated stability constants suggests that the strengths of lead complexes in the analysed fractions are similar and that cadmium is complexed by the fraction smaller than 1000 D.

Słowa kluczowe

EN

ultrafiltration; humic substance; sea water; cadmium; complexation; water; Baltic Sea; lead; heavy metal

• Wydawca: -
• Czasopismo: Oceanologia
• Rocznik: 2000
• Tom: 42
• Numer: 4
• Opis fizyczny: p.473-482,fig.,ref.

Twórcy

autor

Grzybowski W.

• University of Gdansk, al.Marszalka J.Pilsudskiego 46, 81-378 Gdynia, Poland

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