University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Selected Publication:
Lombi, E., Gerzabek, M.H., Horak, O..
(1998):
Mobility of heavy metals in soil and their uptake by sunflower grown at different contamination levels.
Agronomie, 18, 361-371
- Abstract:
- A pot trial was carried out to study the effect of heavy metals on sunflowers (Helianthus annuus L.) grown on three different soils at different levels of heavy metal loading (added in 1987 as salts). Heavy metal availability in soil was investigated using ammonium acetate and chelating resin (Chelex 100) as extractants. Total heavy metal contents in the soils of the pot experiment did not show changes in the considered period of time whereas the availability of the metals was sensibly reduced. Therefore, it seems that heavy metals revert with time to forms more strongly bonded in soil. The pH decreased with increasing additions of heavy metals. This may be the result of changes in exudate or proton release by the roots. Cd, V and Zn were generally more concentrated in the leaves than in the seeds; the opposite behaviour was observed for Cu and Ni. V was never measured above the detection limit in the seeds. Toxicity effects were clearly related to the mobility of heavy metals in the soil. The methods used to assess the availability of heavy metals were highly correlated. The correlation between heavy metals extracted with ammonium acetate and Chelex and the concentration in sunflower shoot tissue showed that the latter method was slightly better than the former. ((C) Inra/Elsevier, Paris.).
- Authors BOKU Wien:
- Gerzabek Martin
- Find related publications in this database (Keywords)
- heavy metals
- mobility in soil
- sunflower
- uptake
- chelating resin
- ammonium acetate