Can I read Phosphate regulates uranium(VI) toxicity to Lemna gibba L. G3 on EtoBox?

Phosphate regulates uranium(VI) toxicity to Lemna gibba L. G3 by Martin Mkandawire; Kerstin Vogel; Barbara Taubert; E. Gert Dudel is a Environmental Science article available to read on EtoBox.

What is Phosphate regulates uranium(VI) toxicity to Lemna gibba L. G3 about?

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 3À at constant pH (7.0 6 0.5) and alkalinity (7.0 6 1.6 mg L À1 total CO 3 ## 2À ). The results showed significant inhibition of specific growth rates in cultures exposed to the highest uranium concentrations (3500 and 7000 g U L À1 ) at lowest PO 4 3À supply of 0.01 mg L À1 . An increase of phosphate concentration from 0.01 to 8.0 mg L À1 resulted in an increase of EC 50 from 0.9 6 0.2 to 7.4 6 1.9 mg L À1 (significant with Student's t test, P > 0.05). The accumulation of uranium in L. gibba increased exponentially with the increase in uranium concentration in cultures with 0.01 and 0.14 mg PO 4 3À L À1 . Accumulation also increased significantly when PO 4 3À supply was increased from 0.14 to 1.36 mg PO 4 3À L À1 for all uranium concentrations. However, as the supply of PO 4 3À gradually increased from 1.36 to 8.0 mg PO 4 3À L À1 , uranium b

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

Author

Martin Mkandawire; Kerstin Vogel; Barbara Taubert; E. Gert Dudel

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1520-4081)

Published

2007

Language

EN

Field

Environmental Science (Physical Sciences)