concentration of uranium 中文意思是什麼

concentration of uranium 解釋
鈾的濃度
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  • of : OF ＝Old French 古法語。
  • uranium : n. 【化學】鈾 （U）。 fertile uranium 鈾238。
  1. 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反萃和稀釋有機相後用濃hno _ 3反萃這兩種分離方法，認為hno _ 3 - hf反萃由於在加熱去除hf時酸度不易控制，導致鋯的部分水解，因而此方法不宜用於icp - ms中，然而稀釋有機相後用濃hno _ 3反萃法用於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萃取分離鈾中鋯用於icp - ms測量中，結果令人滿意，此方法適用於快速、準確測量鈾產品中微量鋯。
  2. Requirements for representative sampling of uranyl nitrate solutions for the determination of uranium concentration

    用於鈾濃度測定的硝酸鈾溶液典型樣品的要求
  3. Abstract : based on the basic geology this paper determines the development history of kailu basin, and comprehensively analyses hydrogeologic conditions and hydrogeochemical characteristics, as well as the uranium concentration in groundwater, determines the prospecting significance of regional confined aquifers in yaojia and sifangtai formations formed during the subsidence stage of the basin

    文摘:本文從基礎地質條件出發，界定了開魯盆地的發展歷史，全面分析了研究區的水文地質條件、水文地球化學特徵及地下水的含鈾性，確定了在整體坳陷期形成的姚家組和四方臺組區域承壓含水層的找礦意義。
  4. It is necessary to enrich the fuel by increasing the percentage concentration of uranium-235.

    必須提高鈾235濃度的百分比，使燃料濃集。
  5. Because the concentration of zirconium in uranium has large ranges, from 1. 50xlo ' 6 - 3. 8g / gu, not only how to decrease the remainder of uranium to eliminate its determinate effect but also how to acquire higher recovery of zirconium is considered, so the method of silica gel, the method of tbp levextrel resin chromatography, the method of tta chromatography and the method of tta extraction are compared. then tta extraction is chosen to acquire the ideal separation purpose. compared with icp - ms and icp - aes, xrf has characters of high repeatability, stability, low cost, high concentration elements analysis, the ability to determinate solid sample and having comprehensive practicability, but xrf has lower sensitivity, so how to increase the concentration of the sample to acquire better precision is a difficult problem, the optimum of operating condition : the integral time of spectral lines is 60s, the integral time of background lines is 20s, the voltage of xrf is 50kv, the electric current is 50ma

    由於鈾中鋯的含量范圍很廣，從1 . 50 10 ~ （ - 6 ） 3 . 8g / gu ，在分離和測量時，既要考慮盡量地減少鈾的殘留量以消除鈾對鋯測量產生的影響，又要獲得鋯的理想的回收率，因此本文在分離方法的選擇上比較了硅膠吸附分離法， cl - tbp萃取色層法， tta萃取色層法和tta萃取分離法的優缺點，認為tta萃取分離法可以達到理想的分離效果。
  6. Nuclear energy - measurement of radioactivity in the environment - water - part 1 : measurement of the concentration of uranium in water by fluorimetry

    核能.環境中放射性的測量.水.第1部分:熒光測定法測量水中鈾的濃度
  7. Nuclear energy - measurement of radioactivity in the environment - water - part 3 : measurement of the concentration of uranium in water by alpha liquid scintillation

    核能.環境中放射性的測量.水.第3部分:用液體閃爍法測定水中鈾的濃度
  8. Nuclear energy - measurement of radioactivity in the environment - water - part 2 : measurement of the concentration of uranium in water by inductively coupled plasma atomic emission spectroscopy

    核能.環境中放射性的測量.水.第2部分:感應耦合等離子體原子發射光譜法測量水中鈾的濃度
  9. Based on abundant statistic data and photographs of seeping - type uranium deposits at the southern margin of ili basin, detailed description is given of the oxidation - migration of organic matter during seeping of oxygen - bearing water, secondary alteration of minerals, and concentration of uranium and associated elements on geochemical reduction barriers as well as formation of secondary seeping uranium deposits

    摘要採用伊犁盆地南緣滲入鈾礦床中的大量統計數據、圖片等資料，論述了在層間滲入型鈾礦床中，有機質在含氧滲流水作用下，發生氧化遷移，巖石中的礦物次生蝕變，並在地球化學還原障上產生鈾及伴生元素的富集，形成後生滲入鈾礦床的過程。
  10. The method of tta extracting trace zirconium in uranium is firstly used to icp - aes, the recovery is 93. 2 %, the detection limit of zirconium is 0. 001 | ig / ml. the method can be used to determine low concentration of zirconium

    並且將tta取法用於icpaes中，全程回收率為93工，結的檢出限為0刀olndrnl ，此方法可用於含量較低的結的分析和測量。
  11. Of them, the study on the deep - source metallogeny, water - rock intereaction of special alkaline fluid and precipitation environment has made a fundation for the establishment of prospecting model of large uranium ore - concentration arcas

    本文按照「源、運、積」 3個環節，探討鈾礦大型礦集區的成礦作用，其中有關深源成礦、特殊堿質流體的水巖反應以及元素淀積環境的研究，為建立鈾礦大型礦集區的找礦模式奠定基礎。
  12. Based on the basic geology this paper determines the development history of kailu basin, and comprehensively analyses hydrogeologic conditions and hydrogeochemical characteristics, as well as the uranium concentration in groundwater, determines the prospecting significance of regional confined aquifers in yaojia and sifangtai formations formed during the subsidence stage of the basin

    本文從基礎地質條件出發，界定了開魯盆地的發展歷史，全面分析了研究區的水文地質條件、水文地球化學特徵及地下水的含鈾性，確定了在整體坳陷期形成的姚家組和四方臺組區域承壓含水層的找礦意義。
  13. Such "noise" is undesirable in the analysis of low uranium concentration.

    這種「噪音」在分析低含量鈾時應當避免。
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