【作者】 郁卫飞； 张勇； 李海波； 胡思得； 孙颖； 黄辉；

【Author】 Weifei Yu;Yong Zhang;Haibo Li;Side Hu;Ying Sun;Hui Huang;Institute of Chemical Materials,China Academy of Engineering Physics;China Academy of Engineering Physics;

【机构】 中国工程物理研究院化工材料研究所； 中国工程物理研究院；

【摘要】 实验研究了化学武器毒剂沙林模拟物的辐射降解作用,以O,O’-二甲基甲基膦酸酯(DMMP)为沙林模拟物,选择购买伽马和中子对DMMP进行辐射,选取合适剂量率和剂量,采用气相色谱方法测试辐射前后的样品。实验结果表明,辐射剂量是DMMP辐射降解作用的主要影响因素,降解作用随剂量的增加而明显增加,而随辐射剂量率的增加而变化的趋势不明显;得到辐射化学产额G值在0.75~1.0 mol/J,随剂量增加而有所降低;GC-MS测得了辐射样中的气态小分子产物和有机磷大分子产物,表明辐射过程符合自由基反应历程;实验表明单一辐射作用难以完全地降解DMMP,显示出多效应综合作用的必要性。更多还原

【Abstract】 Sarin, a chemical warfare agent, was researched about its gamma and neutron radiolysis. DMMP(O, O’-dimethyl methyl phosphonate) was chosen as sarin analogue, samples were irradiated with certain dose rate and dosage, and irradiated samples were analyzed with GC-MS techniques. It was shown that decomposition effect was determined to increase evidently with increase of dosage while indistinctively with increase of dose rate, which meant that dosage should be a dominant factor. Radiation chemistry yields G were calculated within 0.75- 1.0 mol/J and decreased with increase of dosage. GC-MS analysis showed a number of decomposition products including gaseous small molecules and organic phosphorus molecules, which was in accord with free radical reaction mechanism. The experiments also indicated that a single mode of physical or chemical reaction was unable to fully decompose DMMP which showed the need of combination of multiple means.更多还原