Offshore concentration of caesium radioisotopes from large volume seawater samples using KNiFC-PAN
Related Experiment Video
Updated: Jan 27, 2026

Large Volume 20L+ Filtration of Coastal Seawater Samples
Published on: June 18, 2009
Stefanie A K Schmied1, Andrea Meyer1, Ina Bendler1
1Federal Maritime and Hydrographic Agency, D-22589, Hamburg, Germany.
Abstract:
A method for caesium concentration from North Sea and Baltic Sea seawater samples was tested and optimised for offshore concentration of radiocaesium and seawater volumes up to 150 L. The composite ion-exchanger PotassiumNickel Hexacyanoferrate in a Polyacrylnitrile binding matrix (KNiFC-PAN) with 80% of powdered KNiFC per gram of dry residue was used for this study. The optimised method achieved recoveries of around 99% with a bed volume (BV) of 50 mL of KNiFC-PAN and average flow rates of seawater of around 182 BV per hour (e.g. 9.1 L per hour).
Related Concept Videos
Isotopes and Radioisotopes
An isotope containing...
Concentration Cells
Consider the following voltaic cell:
Solution Concentration and Dilution
Expressing Solution Concentration
Concentrations may be quantitatively assessed using a wide variety of measurement units, each convenient for particular applications. Molarity (M) is a useful concentration unit for many applications in chemistry.
Constant Volume Calorimetry
Stress Concentrations
The stress...

