Influence of heavy metals upon the retention and mobilization of polonium‐210 in rats

Abstract

Polonium-210 is bound in vivo to binding sites on various biomolecules, among them erythrocytic enzymes and MT. This phenomenon explains the different affinity and overall distribution of 210Po in control body tissues. When the appropriate binding sites are occupied by lead or cadmium, enhanced natural excretion of polonium-210 occurs.

Aqueous polystyrene–fluor nanosuspensions for quantifying α and β−radiation

“…The nanosuspension was able to quantify 14 C in aqueous media over a broad range of pH values (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14) and ionic strength (0-0.33 M NaCl) as shown in figures 3 and 4. In figure 5, one can see that the nanosuspension exhibited greater quench resistance than the conventional organic scintillation cocktails following the addition of chemical quenching agents such as ethanol and nitric acid.…”

“…The utility of radioisotopes in biomedical, pharmaceutical and environmental research stems from their chemical identity with their non-radioactive counterparts [1][2][3][4]. This allows their incorporation into 'tracers', radiolabelled components that can be followed and detected through a series of reaction steps and biological processes.…”