Laboratory analyses of 137Cs uptake by sunflower, reed and poplar.
The 137Cs uptake by three plant species (Phragmites australis L., Heliantus annus L., Populus simonii L.) was analyzed in a hydroponic medium (14 MBql(-1); 0.5 mM CsCl) during cultivation. The radioactivity disappearance from the medium was measured after 2, 4, 8, 16 and 32 days of cultivation. Radioactivity distribution within the plant was determined by autoradiography. We did not find differences between uptake of radioactive and stable caesium isotopes. Relations between the uptake of 137Cs and concentration of potassium and ammonium ions in medium were also tested. The highest uptake of radiocaesium by sunflower was obtained for medium with 1 mM K2SO4 (14.2%) and in case of ammonium ions for concentration ratio 6 mM NH4Cl : 3 mM NH4NO3 (13.2%). The obtained results make it possible to compare the capability and rate of 137Cs phytoremediation of different plant species.
Soudek
Petr
P
Department of Plant Tissue Cultures, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Praha 6, Czech Republic.
Tykva
Richard
R
Vanek
Tomás
T
D001345:Autoradiography; D001673:Biodegradation, Environmental; D002588:Cesium Radioisotopes / Q000032:analysis* / Q000493:pharmacokinetics*; D018527:Hydroponics; D010944:Plants / Q000378:metabolism*; D011188:Potassium; D000644:Quaternary Ammonium Compounds; D013997:Time Factors
D002588:Cesium Radioisotopes; D000644:Quaternary Ammonium Compounds; D011188:Potassium