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1.abundance of isotopes
同位素丰度收藏指正
2.In contrast, TIMS method is both precise and sensitive allowing the analysis of microgram quantities of chlorine. Large fractionation of Cl isotopes occurs in nature with δ~ 37 Cl variation about 15‰(-8.0‰ ~ 7.5‰).
氯同位素组成用δ37Cl表示,它在自然界的变化可达15‰以上(-8.0‰~7.5‰).收藏指正
3.separation of uranium isotopes
铀同位素分离收藏指正
4.THG APPLICATION OF STABLE ISOTOPES TO THE PROSPECTING EVALUATION OF GOLD ORE DEPOSITS
稳定同位素与金矿找矿评价收藏指正
5.APPLICATIONS OF NATURAL ISOTOPES OF ~7Be AND ~(210) Pb IN ATMOSPHERIC SCIENCE
天然放射性核素铍-7和铅-210在大气示踪研究中的应用收藏指正
6.STUDIES ON SEPARATION OF LITHIUM ISOTOPES BY SOLVENT EXTRACTION——Ⅰ.THE SEPARATION EFFECTS OF LITHIUM ISOTOPES BY SUDAN I-NEUTRAL LIGAND SYNERGETIC EXTRACTION SYSTEMS
溶剂萃取分离锂同位素研究——Ⅰ.苏丹Ⅰ-中性配位体协萃体系萃取分离锂同位素效应收藏指正
7.The intrusion period of rock mass-ore body was analysised. Based on integrated analysis, isochronal 1 ine age of Re-Os isotopes of Baimazhai nickel-copper sulfides is 249 Ma. Thus we considered that the intrusion period of Baimazhai basic-ultrabasic rock is in late Hercynian.
1.分析研究了岩体—矿体的侵位期次及时代,据本次研究综合分析,白马寨铜镍硫化物矿石的Re-Os同位素等时线年龄为249Ma,矿石的年龄可以代表岩体的侵位时代,所以我们认为白马寨基性-超基性侵入岩侵位时代为海西晚期。收藏指正
8.Using new developed radiochemical analysis methodsand instruments, and collecting the surface soil samples from variousareas of Japan, sectiments on the bottom of lake and sea,sea waterand those samples related to the Bikini event happened in. 1954.The content of plutonium isotopes,~(241)Am and ~(237)Np in environmentalsample,their depth profile variation with time and the-relationshipbetween them with organic materials were studied.
采用新建立的放射化学方法和仪器,从日本各地收集表土、海湖沉积物、海水以及1954年“比基尼事件”的有关样品,研究了环境样品中的钚同位素、~(241)Am和~(237)Np的含量及其深度分布、随时间的变化以及和有机物的关系。收藏指正
9.ENRICHMENT OF LITHIUM ISOTOPES BY HIGH PRESSURE ION EXCHANGE DISPLACEMENT CHROMATOGRAPHY (Ⅲ)--SEMICONTINUOUS ENRICHMENT
高压离子交换排代法富集锂同位素(Ⅲ)——半连续富集收藏指正
10.The enrichment and analysis method of trace organic matter in formation water are briefly introduced in this article. Making use of the geochemical data of saturated and aromatic hydrocarbons from 9 water samples (including 8 drilling well formation water and 1 fountain water ), combined with the general analysis on formation water (abiochemistry and isotopes of δDδ~(18)O), we discuss the different conservation condition in the two areas.
该文简要介绍了地层水中微量有机质的富集、分析方法,并对川东区和川东北区8口钻井地层水及诺水河地表泉水中的有机质进行了富集分析,通过利用地层水中饱和烃系列、芳烃系列在不同水化学环境中的变化趋势,并结合前人地层水化学常规分析和氢、氧同位素等资料,探讨了两区的保存条件。收藏指正
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