Determination of 129I in atmospheric samples by accelerator mass spectrometry.
A method for the radiochemical extraction of 129I from atmospheric charcoal filters and its measurement by accelerator mass spectrometry is presented. Either the 129I concentration or the 129I/127I atom ratio can be determined in the sample. With this method, air filters from Seville, in the Southwest of Spain (37.4 degrees N, 6 degrees W) have been analyzed. Sensitivities in the order of 10(4) atoms/m3 for 129I concentrations and 10(-10) for 129I/127I atom ratios are obtained. AMS measurements are performed with the 6 MV tandem accelerator at the ETH-Hönggerberg in Zurich.
Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla, Spain. lguti@cica.es
J M
JM
López-Gutiérrez
M
M
García-León
C
C
Schnabel
A
A
Schmidt
R
R
Michel
H A
HA
Synal
M
M
Suter
D000398:Air Pollution, Radioactive / Q000032:analysis*; D007457:Iodine Radioisotopes / Q000032:analysis*; D013058:Mass Spectrometry / Q000379:methods; D010315:Particle Accelerators; D012680:Sensitivity and Specificity; D013030:Spain
D007457:Iodine Radioisotopes