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uranic adj.天的,天文學的。

uranide

Back extraction by hno3 - hf and back extraction by concentrated hnch after lower the concentration of organic phase are studied , the method of back extration by hnorhf can not be used to icp - ms , because some zirconium is hydrolysis when hf is removed by heat . however , the method of back extraction by concentrated nitric acid after lower the concentration of organic phase can be used to icp - ms , the recovery is 93 . 2 % , rsd % is 5 . 24 % , the decontamination factor of uranium is 3 . 2xl04 , the detection limit of zirconium is 0 . 04ng / ml . the method of tta extracting trace zirconium in uranium is firstly used to icp - ms , the result is satisfied , it can be used to determine zirconium in uranic production quickly and veraciously 本文通過研究hno _ 3 - hf反萃和稀釋有機相后用濃hno _ 3反萃這兩種分離方法,認為hno _ 3 - hf反萃由于在加熱去除hf時酸度不易控制,導致鋯的部分水解,因而此方法不宜用于icp - ms中,然而稀釋有機相后用濃hno _ 3反萃法用于icp - ms測量中,全程回收率為93 . 2 ,相對標準偏差為5 . 24 ,鈾的一次去污因子為3 . 2 10 ~ 4 ,鋯的測定下限為0 . 04ng / ml ,本文首次將tta萃取分離鈾中鋯用于icp - ms測量中,結果令人滿意,此方法適用于快速、準確測量鈾產品中微量鋯。

Determination of u in uranic ores and uraniferous rock by selective solubility - barium salt titration 釩酸鹽滴定法測定鈾礦石及含鈾巖石中六價鈾