On the Th internal contamination by ingestion using the fission track method

Solid-state track detectors in radiometry, isotope analysis, and radiography

“…In studies of hydrobionts, samples required for (n,f) analysis (100-200 mg) can be prepared as powder, pressed pellets, whole small organisms, or pieces of their organs and tissues, dried to constant weights [15]. The lists of papers dealing with SSTD studies of the distribution of radionuclides in biological objects and published in the period from 1972 to 1997 are given in [68,69]. Figure shows as To evaluate the air pollution with α-emitters and hot particles, the surface of aerosol filters was analyzed with CN or CR-39 detectors [40,[70][71][72].…”