WIT Press


Radiocaesium Transfer From Water To A Freshwater Hydrophyte At Different Potassium Concentrations

Price

Free (open access)

Paper DOI

10.2495/WP970121

Volume

20

Pages

8

Published

1997

Size

509 kb

Author(s)

M.C. Vaz Carreiro & G.C. Ferrador

Abstract

Aquatic vascular plants, hydrophytes, are generally considered good indicators of radioactive pollution, as they may accumulate radiocaesium to a great extent, but this accumulation may be highly affected by the potassium concentration in freshwater. The present paper concerns the experimental study of the influence of several potassium concentrations in water on the radiocaesium accumulation by the hydrophyte Lemna minor. Concentrations used varied from 1 mM to 1 pM of K\ Radiocaesium concentration factor increases with decreasing K* concentration in water, for the range of 1 mM to 10 pM of Kaccording to the following equation: CFKCI = 508 e' '*™ + 7674 e'^ r*= 1, with M being the K* molarity. Therefore, at 0.01 mM, the approxima

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