TY - GEN
T1 - AMS analysis of iodine-129 in aerosols from Austria
AU - Jabbar, Tania
AU - Steier, Peter
AU - Wallner, Gabriele
AU - Kandler, Norbert
AU - Katzlberger, Christian
N1 - Host publication data : NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
PY - 2011
Y1 - 2011
N2 - Atmospheric concentrations of many elements have been significantly increased by human activities. The quantification of these changes and their effect on the terrestrial and aquatic ecosystems is important because of their potentially adverse effects. The human nuclear activities, especially releases from the spent nuclear fuel reprocessing plants, are presently the main source of (129)I in the environment.In this work, the concentration of (129)I and the ratios of (129)I/(127)I in aerosols weekly collected in Vienna, Austria (202 m a.s.l) during the year 2001 are presented. Iodine was extracted from the aerosol filters using a strong basic solution and separated from the matrix elements by anion exchange. The chemical yield of the procedure, determined by ICP-MS, ranges from 70% to 95%. The AMS results indicated that the (129)I/(127)I isotopic ratios were of the order 10(-8) to 10(-7). The (129)I originated from gaseous emissions from the Sellafield reprocessing plant. The measured (129)I concentrations were compared with those of (7)Be, a cosmogenic radionuclide. Although, both radionuclides exhibit nearly the same distribution pattern (higher levels in summer and lower in winter) their different origins can clearly be deduced from short term variations.
AB - Atmospheric concentrations of many elements have been significantly increased by human activities. The quantification of these changes and their effect on the terrestrial and aquatic ecosystems is important because of their potentially adverse effects. The human nuclear activities, especially releases from the spent nuclear fuel reprocessing plants, are presently the main source of (129)I in the environment.In this work, the concentration of (129)I and the ratios of (129)I/(127)I in aerosols weekly collected in Vienna, Austria (202 m a.s.l) during the year 2001 are presented. Iodine was extracted from the aerosol filters using a strong basic solution and separated from the matrix elements by anion exchange. The chemical yield of the procedure, determined by ICP-MS, ranges from 70% to 95%. The AMS results indicated that the (129)I/(127)I isotopic ratios were of the order 10(-8) to 10(-7). The (129)I originated from gaseous emissions from the Sellafield reprocessing plant. The measured (129)I concentrations were compared with those of (7)Be, a cosmogenic radionuclide. Although, both radionuclides exhibit nearly the same distribution pattern (higher levels in summer and lower in winter) their different origins can clearly be deduced from short term variations.
U2 - 10.1016/j.nimb.2011.04.023
DO - 10.1016/j.nimb.2011.04.023
M3 - Contribution to proceedings
VL - 269
T3 - Nuclear Instruments & Methods in Physics Research. Section B. Beam Interactions with Materials and Atoms
SP - 3183
EP - 3187
BT - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
PB - Elsevier BV, North-Holland
ER -
