J. Phys. IV France
Volume 08, Numéro PR5, October 1998
Rayons X et Matière
Page(s) Pr5-351 - Pr5-358
Rayons X et Matière

J. Phys. IV France 08 (1998) Pr5-351-Pr5-358

DOI: 10.1051/jp4:1998544

Analyse d'eaux radioactives d'un condenseur de réacteur nucléaire par spectrométrie de fluorescence X à réflexion totale (TXRF), dans un laboratoire en zone surveillée sans protection biologique

P. Trabuc, Ph. Llug and Ph. Bienvenu

SEP/LARC, CEA Cadarache, bâtiment 152, 13115 Saint-Paul-Lez-Durance cedex, France

Total-Reflexion X-Ray Fluorescence Spectrometry differs fundamentally from classical X-ray fluorescence (XRF). The differences between XRF and TXRF apply to sample preparation, calibration, data analysis and detection performance as well as to the objects under investigation. Instrumental detection limits is a few pg for most of elements (Z>13). Besides the high detection power, internal standardization is another important feature, providing a simple and reliable quantification of a multi-elementary analysis. In addition, the small sample mass required enables micro-analytical questions to be tackled. The analysis of a radioactive water can be considered as micro-analysis. Addition of internal standard, dilution and deposit can be done in nuclear laboratories. After evaporation, the activity must be inferior to 7000 Bq for alpha emitters, 107 Bq for beta gamma emitters and the measurement can be done in non controlled zones. The results can be compared with the same analysis done with ICP/MS in glove box.

© EDP Sciences 1998