动力堆燃耗测定的样品溶解  

DISSOLUTION OF THE POWER REACTOR FUEL FOR DETERMINATION OF IT' S BURN-UP

作　　者：廖元宗[1] 张先梓 林灿生[1] 樊印成 

机构地区：[1]中国原子能科学研究院放射化学研究所

出　　处：《原子能科学技术》1996年第2期164-167,共4页Atomic Energy Science and Technology

摘　　要：文章介绍动力堆燃料燃耗测定中样品的溶解方法。试验不同浓度ＨＮＯ３－ＨＣｌ混合液在沸腾温度下溶解ＵＯ２冷样品的效果，以萤光光度计测定溶解液的透明度予以判别。用７．５ｍｏｌ．ｌ（－１）ＨＮＯ３－ＨＣｌ混合液（Ｃ（ＨＮＯ３）：ｃ（ＨＣｌ）＝４：１），溶解热样品，溶解液涂片在超显微镜下检查未见不溶颗粒存在。A dissolution method of sample for determining burn-up of power reactor fuel is described.The non-irradiated UO2 is dissloved in mixture' of HNO3-HCl solution with several concentrations at boiling temperature. The transparency of dissolution solution is determined by fluorescent light meter. The irradiated sample are dissolved with mixed 7. 5mol· 1-1 HNO3-HCl(c (HNO3 ): c (HCl)= 4: 1 ). Non insoluble particles in dissolution solution are not found by means of super imcroscope examination.

关 键 词：动力堆 燃料元件 溶解 燃耗测定 二氧化铀 

分 类 号：TL413.052[核科学技术—核技术及应用]