The present paper aims to investigate the sensitivity of dielectric spectroscopy to changes in concentrations of
pollutants (heavy metals andmetal oxides) uptake by thewater hyacinth plant collected fromagriculture wastewater
drainage. The measurements were carried out on the dried root and shoot plant parts before and after
subjecting to different microwave heating powers for different times. Dielectric properties of the untreated
root were investigated at temperature range (30–90 °C). X-ray fluorescence spectroscopy (XRF) results showed
that the concentration of metals and metals oxides are higher in plant root than in plant shoot. Accordingly, the
obtained dielectric propertieswere found to depend on the applied electric field frequency,magnitude of heating
power aswell as concentrations of pollutants. Analysis of experimental data represented by the imaginary part of
the dielectric modulus M″ (ω) revealed to the presence of three different relaxation processes. The lower
frequency relaxation process was associated to charge carriers conduction whereas those appeared at higher
frequencies were associated to different types of interfacial polarization. The plant ability for removing heavy
metals and metal oxides from the aquatic environments would be enhanced upon subjecting to microwave
heating power with 400Wfor 30 min.