NUKLEONIKA 2004, 49(Supplement 1):s31-s34

PLATINUM UPTAKE BY MUSTARD (Sinapis alba L.) AND MAIZE (Zea mays L.) PLANTS

Joanna Kowalska1, Monika Asztemborska1, Grażyna Bystrzejewska-Piotrowska2

1 Faculty of Chemistry, Warsaw University, 1 Pasteura Str., 02-093 Warsaw, Poland
2 Faculty of Biology, Warsaw University, 1 Miecznikowa Str., 02-093 Warsaw, Poland

The ability of platinum uptake by hydroponically cultivated plants – Indian mustard (Sinapis alba L.) and Anawa maize (Zea mays L.) – was investigated. The efficiency of the transport of platinum compounds from the roots to above ground organs was estimated. For platinum determination in plant samples, digested in closed system with microwave energy, very sensitive analytical methods were applied – adsorptive stripping voltammetry (AdSV) and mass spectrometry with inductively coupled plasma (ICP-MS). For validation of the obtained results the recovery of platinum was examined.
The accumulation factors (AF) of platinum: more then 800 and 400 for roots of Indian mustard and Anawa maize, respectively and about 90 and 30 for above ground organs of both species were found.