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- Pb and Sr isotope tracing 铅锪同位素示踪
- Some hot research fields such as global change, ecology and environment and Sr isotope are becoming more and more important. 此外，在一些热点研究上，如全球变化、生态环境等方面，也逐渐显现出重要性。
- Their geochemical characteristics of trace elements and Nd and Sr isotopes show that these mafic rocks erupted in a back-arc basin. 根据镁铁质岩的层位关系、岩浆来源和微量元素特征，可将该盆地的地质演化概括为扩张阶段和封闭阶段。
- Compositions of S and Sr isotopes for celestine are similar to those for general sea waters. 天青石中硫、锶同位素值和海水硫、锶同位素值相近。
- The analysis of H,O,C and Sr isotopes shows that this deposit is a lowtomoderate temperature volcanogene hydrothermal gold deposit in which meteoric water participates. 通过硫、铅、氢、氧、碳、锶等同位素及稀土元素的研究可以看出，该矿床是一个中、低温有大气水参与的火山热液型金矿床。
- H and O isotope compositions of ores show the polygenetic origin of ore-forming solution;and Sr and Pb isotope compositions indicate the mantle and lower crust source. 矿石氢氧同位素组成显示出成矿溶液具备多成因的特点;
- Accomplish other jobs disposed by CH and Sr. 完成教学主管和中心主任布置的其它工作。
- Fe, Mn and Sr are higher in content. 实验结果表明:其中铁、、的含量较高。
- Cu and Cr, and a part of Cd? Pb and Ni remain in the bottom ash. 大部分的重金属元素Zn、Cu和Cr残留在灰渣中 ,Cd、Pb和Ni部分残留在灰渣中
- Determination of Pb and Cd in Salvia Miltiorrhiza Gge. 与相似的文献。
- Threaded Valve Dimensions apply to both Standard and SR Threads. 螺纹连接阀门尺寸适用于标准和SR螺纹阀门。
- The trace Pb and Cd in calcium salts were separated and enriched with sulphydryl cotton,and determined by FAAS. 巯基棉分离富集,火焰原子吸收光谱法同时测定钙盐中的痕量铅、镉,大量钙不干扰铅、镉的测定。
- Some global consistent and comparable marine Sr isotope curves for the Phanerozoic have been established recently. 近年来，显生宙以来海水锶同位素的变化曲线不断得以补充和修正，已建立起具有全球一致性、可对比的海水锶同位素变化曲线背景值，为锶同位素的应用奠定了基础。
- And the study on application of lead isotope tracing for city environment pollution sources can get a good result. 铅同位素示踪理论应用于城市环境污染源的研究,能够取得比较理想的结果。
- Title： Study on the Sr, Nd, Pb and O isotopes of basic dyke swarms in the Wudang block and basic volcanics of the Yaolinghe Group. 关键词：基性岩墙群；基性火山；同位素；地球化学；武当地块；耀岭河群
- In recent years lead isotope tracing has been playing its unique role in studying the source and migration of heavy metals in soil. 近年来铅同位素示踪在研究土壤中相关重金属来源及其运移途径起到独特的作用。
- A model 975 ICP direct reading spectrometer was used to determine the trace elements of Ca, Cd,Cr, Cu, Fe, Mg, Mn, Mo, Ni, Pb and Sn in U3O8 CRMs. 用975型ICP直读光谱仪同时测定八氧化三铀系列标准物质中Ca、Cd、Cr、Cu、Fe、Mg、Mn、Mo、Ni、Ph和Sn11种杂质。
- This approach underpins much of my research on energy and nutrient flux, and has involved both natural abundance and enriched isotope tracing techniques. 该方法巩固了对于我在能量和营养流的研究，并结合了自然丰度和浓缩同位素跟踪技法。
- The effect of moisture conditioning treatment parameters of brown rice on the water absorption rate of polished rice was studied based on isotope tracing. 该研究以糙米为原料,应用同位素示踪技术研究糙米加湿调质各工艺参数对精米吸水率的影响规律。
- A Comparison of Variations in Nd and Sr Isotopic Compositions between the Loess Plateau and the Pacific Sediments 黄土高原黄土和太平洋沉积物Nd,Sr同位素变化的比较
