NUKLEONIKA 2005, 50(Supplement 1):S59-S61
Magdalena Hawieńczyk1, Grażyna Bystrzejewska-Piotrowska1, Joanna Kowalska2, Monika Asztemborska2
1 Isotope Laboratory, Faculty of Biology,
Warsaw University, 1 Miecznikowa Str., PL-02-096 Warsaw, Poland
2 Laboratory of Applied Analytical Chemistry,
Faculty of Chemistry, Warsaw University, 1 Pasteura Str., 02-093 Warsaw, Poland
The ability of hydroponically cultivated Indian mustard plants (Sinapis alba L.) to accumulate
platinum was investigated. The Pt-bioaccumulation in leaves, stem and shoots of plants growing
for 2 and 4 weeks at Pt-concentration of 50 and 500 mg/L was compared.
The relation between dry and fresh weight was also estimated. Adsorptive stripping voltammetry (AdSV)
and mass spectrometry with inductively coupled plasma (ICP-MS) were applied for determination of Pt.
Increasing Pt-concentration from 50 to 500 mg/L in the medium causes: (1) reduction of the root tissue
hydration level at unchanged modification in aboveground parts of the plants and (2) decrease of the
Pt transfer factor (TF) for roots and increase for leaves and stem. Duration of the culture influenced
on Pt-accumulation in roots and in aboveground organs of mustard plants. Transfer factor for Pt between
560 and 1600 makes Indian mustard plants one at Pt-hyperaccumulators. Distribution of Pt-bioaccumulation
in the plant organs may be useful for biomonitoring of platinum in the environment.