Radiotracer analysis of the physico-chemical state of trace elements in aqueous solutions III. Lead View Full Text


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Article Info

DATE

1979-03

AUTHORS

P. Beneš, Z. Krištofiková, M. Obdržálek

ABSTRACT

The physico-chemical state of trace lead in aqueous nitrate solutions (I=0.01) was studied using equilibrium calculation, free-liquid electrophoresis, dialysis and centrifugation methods and210, 212Pb. It has been found that lead is present exclusively as nonhydrolyzed cations in solutions of pH 2–3.5. Colloidal or larger particulate forms of lead exist in solutions of lower acidity (pH>4). They are of pseudocolloidal nature, i.e. they are formed by adsorption of lead on solid impurities in the studied solutions. The pseudocolloids are negatively charged at pH>5 and reversible at pH 4–7. Reversibility of the adsorption of lead on impurities decreases at pH>7. Experiments have indicated that a significant hydrolysis of bivalent lead takes place already at pH>4. Anionic hydroxo-complexes of lead predominate in alkaline solutions of pH>12. More... »

PAGES

15-26

References to SciGraph publications

  • 1979-03. Radiotracer analysis of the physico-chemical state of trace elements in aqueous solutions in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • 1974-03. A generator for preparation of carrier-free224Ra in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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    http://scigraph.springernature.com/pub.10.1007/bf02517757

    DOI

    http://dx.doi.org/10.1007/bf02517757

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