A simple assay method for added stable caesium in blood plasma
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Matti Kaikkonen
Summary
A new assay method was developed to determine added stable caesium (Cs) in blood plasma. The simple and inexpensive method is based on the competition between stable and radioactive Cs in binding to ammonium-iron(II)-hexacyanoferrate(III) (AFCF), followed by the precipitation of AFCF-bound Cs with plasma proteins, and the measurement of the radioactivity of the precipitate. For data treatment, standard procedures of radioimmunoassay were used. At present stage, the qualitative detection limit is around 0.2 μmol L-1, and the practical limit for quantitative results around 1 μmol L-1. The method is applicable only for recently added Cs in blood plasma, and cannot be used to measure endogenous plasma Cs or Cs in other tissues. Determining plasma kinetics of Cs might be useful in the study of some aspects of potassium kinetics, since these two alkali metals are transported into cells by the same cellular mechanism (Na,K-ATPase).
© Oldenbourg Wissenschaftsverlag, München
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Artikel in diesem Heft
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- Effect of ozone on ruthenium species in alkaline medium – Part I: Oxidative dissolution of ruthenium dioxide hydrate
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- Studies on thermal decomposition of uranium(VI) and thorium(IV) complexes of o-carboxy N,N′-dimethylbenzylamine by thermoanalytical techniques in static air atmosphere
- Experimental evidence for solubility limitation of the aqueous Ni(II) concentration and isotopic exchange of 63Ni in cementitious systems
- A study on the metal binding of humic acid by multitracer technique
- A simple assay method for added stable caesium in blood plasma
- Removal of mercury from water using pottery
- Berkelium nitrate complex formation using a solvent extraction technique
