This article reviews fundamental aspects of deposition, structure and electrochemistry of Prussian Blue and its analogues. Special attention is given to the metal hexacyanoferrates with potential analytical applications. Prussian Blue and its analogues as advanced sensing materials for nonelectroactive ions are discussed. In contrast to common ‘smart materials’, the sensitivity and selectivity of metal hexacyanoferrates to such ions is provided by thermodynamic background. Prussian Blue itself is recognized as the most advantageous low-potential transducer for hydrogen peroxide over all known systems. Both high sensitivity (ca. 1 A M−1 cm−2) and selectivity in relation to oxygen reduction are more than three orders of magnitude higher, than for platinum electrodes. Biosensors based on different transducing principles containing enzymes oxidases are compared, and the devices operated due to hydrogen peroxide detection with the Prussian Blue based transducer are shown to be the most advantageous ones. The future prospects of chemical and biological sensors based on metal hexacyanoferrates are outlined.

Prussian Blue and Its Analogues: Electrochemistry and Analytical Applications

Chelating polymers and related supports for separation and preconcentration of trace metals.

Chemistry of Transition Metal Cyanide Compounds: Modern Perspectives

https://orbit.dtu.dk/files/3249858/2007_333.pdf

Critical comparison of radiometric and mass spectrometric methods for the determination of radionuclides in environmental, biological and nuclear waste samples.

Paramagnetic NMR in solution and the solid state

Adsorption of monovalent ions on zinc ferrocyanide

A description is given of the preparation of copper hexacyanoferrate(II) supported on silica granules. The material in this form is suitable for use as adsorber in batch for concentrating trace cesium from cea water. A modified procedure for collecting cesium from large volumes of river water consists in the use of a column filled with the absorber that is oxidized to copper hexacyanoferrate(III) prior to use.

Copper hexacyanoferate(II) and (III) as trace cesium adsorbers from natural waters

A description is given of the preparation and chemical properties of copper(II) hexacyanoferrate (II) and (III). The first is well known and already used for rapid determination of137Cs in a wide variety of matrices, but the survey reveals that copper(II) hexacyanoferrate(III) is preferable as long as adsorption capacity is concerned. Thermal stability, reactions in acid media and competitive adsorption of K+ and NH
 4
 +
 ions are discussed for both adsorbers.

Characterization of copper hexacyanoferrate(II) and (III) with reference to their use as cesium adsorbers

A procedure for90Sr determination in calcium rich samples is presented. It is based on the precipitation of calcium oxalate in homogeneous solution and under controlled conditions to minimize the coprecipitation of strontium. The latter is subsequently separated as carbonate and radiochemical purification is completed by ion exchange chromatography on two inorganic exchangers: PRTD (partially reduced tin dioxide) and CUCR (copper chromate). The procedure was applied to environmental samples such as ashed sediment, fish and vegetable and results are reported.

M. T. Ganzerli Valentini

Papers

Adsorption of monovalent ions on zinc ferrocyanide

Copper hexacyanoferate(II) and (III) as trace cesium adsorbers from natural waters

Characterization of copper hexacyanoferrate(II) and (III) with reference to their use as cesium adsorbers

A novel approach to Ca-Sr separation in the determination of90Sr using inorganic exchangers: An application to environmental samples

Behaviour of uranyl ion in nitric acid solutions with ammonium molybdophosphate