Phosphate regulates uranium(VI) toxicity to Lemna gibba L. G3.

The influence of phosphate on the toxicity of uranium to Lemna gibba G3 was tested in semicontinuous culture with synthetic mine water developed as an analogue of surface water of two abandoned uranium mining and ore processing sites in Saxony, Germany. Six concentrations of uranium were investigated under five different supply regimes of PO(4) (3-) at constant pH (7.0 +/- 0.

Limitations of growth-parameters in Lemna gibba bioassays for arsenic and uranium under variable phosphate availability.

Growth behaviour of Lemna gibba L. at different phosphorus supply, and arsenic or uranium exposure levels was investigated in batch culture. Total frond count, total frond area, and dry biomass were used to observe growth at four phosphate, arsenic, and uranium concentrations.

Capacity of Lemna gibba L. (duckweed) for uranium and arsenic phytoremediation in mine tailing waters.

The potential of Lemna gibba L. to clean uranium and arsenic contamination from mine surface waters was investigated in wetlands of two former uranium mines in eastern Germany and in laboratory hydroponic culture. Water and plants were sampled and L gibba growth and yield were monitored in tailing ponds from the field study sites.