Herzner Viktoria, Katzlberger Christian, Pfeifer Christoph, Maringer Franz Josef, Weigl-Kuska Martin
Department for Technical Radiation Protection, Austrian Agency for Health and Food Safety, Spargelfeldstraße 191, 1220 Vienna, Austria.
Department of Natural Sciences and Sustainable Resources, Institute of Chemical and Energy Engineering, BOKU University, Muthgasse 107, 1190 Vienna, Austria.
Radiat Prot Dosimetry. 2025 Aug 26;201(13-14):948-959. doi: 10.1093/rpd/ncaf036.
This study assessed the radiological risk of wood fuels and their ashes in Austria, including wood chips, logs, pellets, and briquettes. Commercially purchased wood fuels are often of unknown origin and may have been imported. 137Cs activity concentrations were measured in wood fuels (69 samples) and their ashes (27 samples) using gamma-ray spectrometers with high-purity germanium detectors. 90Sr analyses were performed on 12 ash samples after chemical separation using PerkinElmer 1220 Quantulus™ liquid scintillation counters. Results showed 137Cs activity concentrations ranging from 0.327 to 8.36 Bq kg-1 in wood fuels (average 2.1 Bq kg-1) and from 11.80 to 867 Bq kg-1 in ashes (average 310 Bq kg-1). The 90Sr activity concentrations in ashes ranged from 363 to 1200 Bq kg-1 (average 655 Bq kg-1). Summarizing, this study suggests that wood fuels currently available in Austria do not pose a significant radiological risk from their ashes, negating the need for import regulations.
本研究评估了奥地利木燃料及其灰烬的放射性风险，包括木片、原木、颗粒燃料和煤球。商业购买的木燃料通常来源不明，可能是进口的。使用配备高纯锗探测器的伽马射线光谱仪测量了木燃料（69个样本）及其灰烬（27个样本）中的137Cs活度浓度。使用珀金埃尔默1220 Quantulus™ 液体闪烁计数器对12个灰烬样本进行化学分离后进行了90Sr分析。结果显示，木燃料中137Cs活度浓度范围为0.327至8.36 Bq kg-1（平均2.1 Bq kg-1），灰烬中为11.80至867 Bq kg-1（平均310 Bq kg-1）。灰烬中90Sr活度浓度范围为363至1200 Bq kg-1（平均655 Bq kg-1）。总之，本研究表明，奥地利目前可用的木燃料灰烬不会造成重大放射性风险，无需进口监管。
