Data, despite being crucial for internal dose assessment, is lacking on the transfer of artificial radionuclides from the environment to the food supply. Expanding the available information on these factors is important for the improvement of dose models for specific scenarios.

This paper describes the results of a 70 day field experiment with broiler chickens on the dynamics of excretion of ¹³⁷Cs and ²⁴¹Am from the muscle, liver and bone of broilers after a 30 day application of contaminated feed.

The radionuclide concentrations in the feed and the thigh muscle, thigh bone and liver of 54 chickens divided between grass meal and soil contaminated feed groups were evaluated by gamma spectrometry for ²⁴¹Am and ¹³⁷Cs.

The obtained results confirm previous data on the dynamics of the excretion of cesium from organs, which can be described with a fast and a slow exponential curve of excretion.

On the 70th day, following the 30-days application, 2–8% of the first-day activity concentrations of ¹³⁷Cs in organs (muscle, liver, bone) were detected. In the first two days, activity concentration of ²⁴¹Am decreases twofold in both liver and bone. 35% of the maximum activity concentration of ²⁴¹Am remained in bone and 15% in liver on the last day of the experiment.

尽管数据对内部剂量评估至关重要，但缺乏将人工放射性核素从环境转移到食品供应中的数据。扩展有关这些因素的可用信息对于改进特定情况下的剂量模型非常重要。

本文描述了一个为期70天的肉鸡田间试验的结果，该实验研究了在食用受污染的饲料30天后，肉鸡肌肉，肝脏和骨骼中¹³⁷ Cs和²⁴¹ Am的排泄动态。

用伽马能谱法测定了²⁴¹ Am和¹³⁷ Cs在草粉和土壤污染的饲料组之间划分的54只鸡的饲料，大腿肌肉，大腿骨和肝脏中的放射性核素浓度。

获得的结果证实了有关铯从器官排泄动力学的先前数据，可以用快速和缓慢的排泄指数曲线来描述。

施用30天后的第70天，检测到器官（肌肉，肝脏，骨骼）中¹³⁷ Cs的第一天活动浓度的2–8％。在头两天，肝脏和骨骼中²⁴¹ Am的活动浓度降低了两倍。在实验的最后一天，最大活性浓度²⁴¹ Am的35％保留在骨骼中，而15％保留在肝脏中。