Applicability of the LSC technique for determining ²¹⁰Pb in liquid samples for purposes of occupational dose assessment via in vitro bioassay

A new approach for the determination of ²¹⁰Pb by liquid scintillation counting was developed by the LBIOVT. In order to assess the applicability of this technique previously developed for internal monitoring of occupationally exposed workers, some probable scenarios for the intake of ²¹⁰Pb were elaborated and evaluated in this complementary work. The methodology formerly developed provides detection limit values suitable for detecting activities corresponding to committed effective doses below the recording level of 1 mSv in a variety of scenarios. In a monitoring program for occupational exposed workers the methodology could be used in a biannual monitoring interval both for daily urine or faeces collection, either considering scenarios of ²¹⁰Pb intake by inhalation or ingestion,and the detection limits would still be able to detect activities corresponding to a committed effective doses below the recording level. It is concluded that the methodology developed is suitable to be used in a monitoring program for occupational exposed workers. (author)