Radiation Protection Dosimetry Advance Access published online on October 28, 2009
Radiation Protection Dosimetry, doi:10.1093/rpd/ncp244
DEVELOPMENT OF AN ELECTROLYSIS SYSTEM FOR TRITIUM ENRICHMENT IN SUPERFICIAL WATER SAMPLES
ARPA Piemonte, Centro Regionale Radiazioni Ionizzanti e Non Ionizzanti, Via Jervis, 30 10015 Ivrea (TO), Italy
* Corresponding author: g.garbarino{at}arpa.piemonte.it
Tritium present in the environment gradually decreased in the last decades and nowadays it has reached extremely low activity concentrations. The purpose of the present work is the implementation of a tritium enrichment system in water samples using electrolytic techniques and pure nickel and iron electrodes. In the present work a mean tritium enrichment factor of 13.0 ± 3.2 was obtained. This result should allow to reach a minimum detectable activity of tritium in water samples of about 1 tritium unit (TU) or less. The present enrichment system necessitates further adjustments and improvements, such as a cooling system in order to reduce the tritium losses due to evaporation.