engleski

Subsequent determination of 90Sr and 210Pb in goat bones samples from Island of Mljet, Croatia

The activity concentrations of 90Sr and 210Pb were determined in the bones of the goats from the island of Mljet, Croatia. The goats have been a generous food supply for centuries on this Croatian island, which is scarce of any abundant food source. Strontium is a calcium chemical homology. Lead can easily and irreversible depot in bones. Consequently, they readily deposit in the bones during a life of an animal. Such bones can be used as a part of an environmental monitoring. For every analysis, 10g of bone ash was used. Sequential separation of strontium and lead in the samples of the goat bones employing Eichrom ´s extraction chromatography product Sr Resin, and solutions of nitric and hydrochloric acids, allows the determination of anthropogenic radionuclide 90Sr and naturally occurring radionuclide 210Pb with good chemical yields and detection limits. After separation 90Sr was detected by Cherenkov radiation and 210Pb by classical LSC detection. Determinated activities were from MDA (2.6 Bq/kg) to 60.5 Bq/kg for 90Sr and from 8.4 to 95.1 Bq/kg (MDA 1.9 Bq/kg) for 210Pb. The use and the effectiveness of Sr Resin were successfully verified by analysing a certified reference material and reliable results have been obtained.

90Sr ; 210Pb ; bones ; goat ; Sr Resin

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