Fig. 1From: A solid-phase extraction method using Transcarpathian clinoptilolite for preconcentration of trace amounts of terbium in water samplesDependence of clinoptilolite sorption capacity of terbium(III) ions on a pH value of the aqueous solution and thermal treatment carried out in the range from 20 to 700 °C (pH 8.25) (concentration of Tb(III) – 1 μg•mL−1; pH 8.25; a flow rate −3 mL•min−1; time of heat treatment – 2.5 h)Back to article page