Abstract
The pollution of the environment arising from sources emitting preconcentrated natural radionuclides was studied using low-level gamma-spectrometry. Along the upper stream of the river Sava in Slovenia (Yugoslavia) many sources with enhanced concentrations of natural radionuclides contribute to the pollution of the river. The pollution of air is usually limited to the vicinity of the sources. A planar Ge(HP) detector with a large surface showed improved sensitivity for 210Pb, U, and Ra in comparison to the 116 cm 3 Ge(Li) coaxial detector.
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