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本文采用液体闪烁测定法研究了褐藻酸钠和普鲁士蓝对晚期混合裂变产物的胃肠道阻吸收作用。结果表明：褐藻酸钠和普鲁士蓝对晚期混合裂变产物均有阻吸收作用，以普鲁士蓝的作用为明显，血液、肝、肾、脾、骨和尿液中的放射性比活度均比对照组低。它们两者同时使用效果更佳，如再同时给予促排剂ＤＴＰＡ或喹胺酸在增加已吸收的核素自尿中排除的同时，也增加了组织中的放射性活度，说明促排剂增加了晚期混合裂变产物自肠道的吸收。Ｐ＜０．０１组有差异，余无明显差异；尿、肝、肾各组间两两比较均有显著性差异（Ｐ＜０．０１）；脾除与对照组比有明显差异，余无明显差异；骨骼与对照组比均有显著性差别，除实验３组外，实验５组与其他组有显著性差别，余组间无显著性差别。讨论褐藻酸钠是锶的特异性阻吸收剂，普鲁士蓝是铯的特异性阻吸收剂［３］。在分别使用的情况下，褐藻酸钠只能对混合裂变产物中的锶阻吸收而不能阻止其他核素的吸收，而普鲁士蓝也只能阻止混合裂变产物中铯的吸收，所以它们分别使用能不同程度地降低组织和尿中混合裂变产物的含量。血液中的混合裂变产物含量除实验５组外，余无明显差异，这与锶和铯进入血液后以离子态或与有机酸结合成络合物形式较快地转移至器官组织特性有关。肌注?
In this paper, the liquid scintillation assay was used to study the gastrointestinal resistance of sodium alginate and Prussian blue mixed fission products. The results showed that both sodium alginate and Prussian blue had a positive absorption effect on the late mixed fission products, and the effect of Prussian blue was obvious. The radioactive specific activities of blood, liver, kidney, spleen, bone and urine were higher than those of the control group low. Both of them are more effective at the same time. For example, simultaneous administration of DTPA or kainate increases the absorbed radioactive nuclide and also increases the radioactivity in the tissue, indicating the increase of the anti-dilating agent Late mixed fission products from the intestinal absorption. There was significant difference between the two groups (P <0.01). There was significant difference between the groups of spleen except the control group There were significant differences between the two groups. There was a significant difference between the bones and the control group. Except experiment group 3, there were significant differences between the experimental group 5 and the other groups, with no significant difference between the remaining groups. Discussion Sodium alginate is a specific resistance of strontium absorbent, Prussian Blue is a specific resistance of cesium absorbent [3]. When used separately, sodium alginate can only absorb the strontium in the mixed fission products and can not prevent the absorption of other nuclides, while Prussian blue can only prevent the absorption of cesium in the mixed fission products. Therefore, To varying degrees, reduce the content of mixed fission products in tissues and urine. There was no significant difference in the content of mixed fission products in blood except for the experimental group 5, which is related to the rapid transfer of strontium and cesium to the organ tissue after being in the blood or in the form of complexes with organic acids or organic acids. Intramuscular?