Abstract
In our measurements on samples, characteristic X-rays induced by a radioactive Cd-109 source were deteced in a high resolution Si(Li) detector. In the current experimental arrangement, it is possible to detect X-rays in the interval of energy 2-20 keV. All samples have been analyzed under the same conditions. The elemental composition of two leaden seals from the Republic of Ragusa were measured. Quantitave spectrum analyses showed that in the leaden seals there is gallium and iron in addition to the lead, which is the dominant element. Concentration of bizmuth, gold and selenium were found to be within the detection limit. Metal content, with the exception of silver, have also been measured in two ancient and two medieval silver coins.
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