Austrian tritium monitoring network - annual report 1994

The Federal Research and Testing Institute Arsenal (BFPZ Arsenal) and the Austrian Federal Environment Agency (UBA) cooperate in the frame of a research contract concerning the monitoring of the tritium concentrations of precipitation in Austria. Monthly mixed samples of 20 stations have been analysed in the year 1994. Compared to 1993 the tritium concentration in precipitation did not change very substancially. The measured concentrations are far below critical values concerning health. The stations N-77 (Bregenz) and N-64 (Patscherkofel) show slightly higher values compared to the other stations. The concentrations at Patscherkofel N-64 (2,245 m above sea-level), which have been significant higher in comparison with the other stations since the early eighties (the cause for this special behaviour is not known until now), have been further decreasing in comparison to 1993. Possible causes are discussed for the raised 3H-content of precipitation at the Patscherkofel near Innsbruck. (author)