Abstract：
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 228Th) 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 232Th was ranged from <0.34 Bq kg-1 for nitrogenous fertilizer up to 97 ± 22 Bq kg-1 for pure phosphate fertilizer.
摘要：
肥料在增加单位土地作物产量方面发挥着关键作用，以应对日益增长的粮食生产需求。然而,过度或不当使用肥料会导致一些环境问题，包括土壤污染。属于肥料的已知污染物之一是放射性核素。这项研究的目的是确定波兰生产的几种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228Th)来评估化学回收率。通过分析认证的参考材料，证实了该方法的正确性。结果表明，氮肥232Th的活性浓度范围为<0.34Bqkg-1，纯磷肥为97±22Bqkg-1。
