Radiation Protection Measurements Laboratory, NCBJ National Centre for Nuclear Research, 05-400, Otwock, Świerk, Poland.
J Environ Radioact. 2024 Sep;278:107480. doi: 10.1016/j.jenvrad.2024.107480. Epub 2024 Jun 12.
Fertilizers play a key role in increasing crop yield per unit land answering the growing demand for food production. However, excessive or improper use of fertilizers can lead to several environmental issues including soil contamination. One of the known contaminants attributed to fertilizers are radionuclides. The goal of this study was to determine the concentration of thorium isotopes in several types of commonly used fertilizers produced in Poland. The methodology included the use of an alternative tracer (namely Th) to evaluate chemical recovery. The correctness of the proposed method was confirmed by analyzing certified reference materials. The obtained results showed that the activity concentration of Th was ranged from <0.34 Bq kg for nitrogenous fertilizer up to 97 ± 22 Bq kg for pure phosphate fertilizer.
肥料在提高单位土地作物产量方面起着关键作用，满足了不断增长的粮食生产需求。然而，肥料的过量或不当使用会导致包括土壤污染在内的几个环境问题。已知肥料中的污染物之一是放射性核素。本研究的目的是测定几种在波兰生产的常用肥料中钍同位素的浓度。该方法包括使用替代示踪剂（即 Th）来评估化学回收率。通过分析认证参考物质，证实了所提出方法的正确性。所获得的结果表明，Th 的活度浓度范围从<0.34 Bq kg （用于氮肥）到 97 ± 22 Bq kg （用于纯磷酸盐肥料）。
