1) Pa isotopes
镤同位素
2) Protactinium
[英][,prɔtək'tiniəm] [美][,protək'tɪnɪəm]
镤
3) isotope
[英]['aɪsətəʊp] [美]['aɪsə'top]
同位素
1.
Discussion On Geology and Isotope Characters of Jiusangou Gold Deposit in Wangqing,Jilin Province;
吉林汪清九三沟金矿床地质及同位素特征探讨
2.
Gas isotope characteristics analysis in the south of eastern sag in Liaohe Basin;
辽河盆地东部凹陷南部地区天然气的同位素特征及成因
3.
Primary discussion on isotope characteristics of coalbed gas of Qinshui basin;
沁水盆地煤层气同位素特征及成因类型初探
4) Pb isotope
铅同位素
1.
Study on characteristics of S,Pb isotopes of the Pb-Zn deposits,Au deposits in Xicheng area and their metallogenic relationship;
西成地区铅-锌矿、金矿硫铅同位素特征及成矿关系的研究
2.
Comparative studies on Pb isotope ratios of corrosion rinds and metal cores of bronze vessels;
古代青铜器基体与其锈蚀产物铅同位素对比研究
3.
Based on a systematic lithologic and sedimentary facies analysis,this paper deals in detail with Pb isotope characteristics of dolomite and associated limestone in the Long'eni-Angdar Co ancient oil accumulation.
以系统的岩石学及沉积相分析为基础,深入探讨了隆额尼—昂达尔错古油藏白云岩及其伴生灰岩的铅同位素特征,认为该区白云岩及伴生灰岩具有统一的铅来源,铅主要来自中央隆起带变质岩、岩浆岩及再旋回沉积的三叠系地层,为地幔、造山带、地壳等多源混合的异常铅。
5) sulfur isotope
硫同位素
1.
The lead and sulfur isotope analysis suggests that the tremendous thick and stringer ore bodies may be formed by fluid of different geologic periods.
铅和硫同位素都揭示了层状(块状)和脉状矿体可能来自不同时期的成矿流体。
2.
The new method of the thermal ionization mass spectrometry permits analysis of sulfur isotope with a precision for δ34S of 0.
环境样品的硫同位素比值能够提供硫的来源及其在环境中扩散迁移的相关信息。
3.
Acid rain has been one of the most serious environment problems in the world and the study of sulfur isotope can help us find the sulfur source,composition and have important significance for research to harness acid rain.
酸雨已经成为全球环境主要的问题之一,而硫同位素的研究对于探讨酸雨的来源、组成与酸雨的治理具有重要的意义。
6) hydrogen isotope
氢同位素
1.
The free carbon and hydrogen isotopes in n-alkane from the Paleozoic source rocks in Huanghua depression are determined using techniques of GC-IRMS and GC-TC-IRMS to reveal the isotope compositions in different sedimentary environments.
以黄骅坳陷古生界烃源岩作为研究对象,采用GC-IRMS和GC-TC-IRMS技术对烃源岩抽提物中的正构烷烃单体碳、氢同位素进行测定,揭示不同沉积环境中正构烷烃单体碳、氢同位素的组成特征。
2.
Palladium-hydrogen system has the largest isotope effect in the metal-(hydrogen) systems so far as we know,so palladium is widely used in hydrogen isotopes(disposal) technology.
在迄今所知的金属-氢体系中,钯氢体系的同位素效应最强,因此,钯被广泛用于氢同位素处理工艺中。
3.
In addition,the experiment working standard of H2 was certified by H2 /H2O(l) equlibrium H/D isotope analysis associating with hydrogen isotope fractionation equilibrium.
采用Gasbench-IRMS对水平衡氢同位素质谱分析影响因素进行了研究,确立了分析方法。
补充资料：镤
元素符号Pa,原子序数91,系锕系金属。231Pa是235U放射系的成员，233Pa是用中子照射232Th制取233U的中间产物。在放射平衡的情况下,一吨铀含340毫克镤。提取镤的原料是高品位铀矿提取铀后的残渣。1959和1961年英国原子能总局曾把60吨提铀后的乙醚渣，经过12级过程制得125克纯度为99.9%的镤。中国研究了从铀精矿提取铀、镭后的残渣中用离子交换和溶剂萃取法分离镤的方法。
在1400℃用钡蒸气还原或在1250℃用钙还原四氟化镤(PaF4)均可制得粉状金属镤。新制得的镤有明亮的金属光泽，并能在空气中保持相当长的时间。通过间接测量的方法测得镤在1927℃下的蒸气压为5.1×10-5托。镤在水溶液中以五价或四价存在。
在1400℃用钡蒸气还原或在1250℃用钙还原四氟化镤(PaF4)均可制得粉状金属镤。新制得的镤有明亮的金属光泽，并能在空气中保持相当长的时间。通过间接测量的方法测得镤在1927℃下的蒸气压为5.1×10-5托。镤在水溶液中以五价或四价存在。
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参考词条