同位素比值

CAIS法校正ICP-MS测定血铅浓度及同位素比值基体效应的研究

CAIS Correction for Blood Matrix Effect on Determination of Lead Concentration and Isotope Ratio by ICP-MS

自从1985年Ericson首次提出利用人类牙釉质和骨骼中的锶同位素比值来研究人类的迁移情况和外来人口的来源地之后，这个方法就受到了考古学家的重视。

Ericson ( 1985 ) first proposed strontium isotope ratio in human tooth enamel and bone to identify migration and the geologic origins of immigrants . Since then , the method has been thought highly by many archaeologists .

尝试用U同位素比值来对Th进行分馏校正；

Try to use the ratio of uranium isotope to normalize Th mass fractionation ;

碳酸盐岩Sr同位素比值的选择性溶解及测定技术

The selective dissolution and determination technique for Sr isotopic ratios in carbonate rocks

烟叶中Pb同位素比值的ICP-MS测定及地域差异比较

Determination of Lead Isotope Ratios of Tobacco by ICP-MS and Their Areal Difference

快速、高精密度Sr同位素比值与定量一次性测定的多接收程序设计

Designing of a multi-collector software for fast and high-precision determination of Sr isotopes and concentrations

粪便样品中Fe同位素比值的ICP-MS测定研究

Study for Determination of isotope ratios of iron in faeces By Double Focusing High Resolution ICP-MS

ICP-MS测定土壤中铅同位素比值及地域差异性比较

Determination of lead isotope ratios in soil by inductively coupled plasma mass spectrometry and comparison of source differentiation

测量了喀斯特地区乌江、沅江两大水系的河流枯水期的主元素、Sr2+离子浓度和Sr同位素比值。

Major ions and Sr ~ ( 2 + ) concentrations and Sr isotopic compositions of two major river systems were measured in Guizhou karst region .

同位素比值质谱法测定TNT的来源铅同位素比值测定的激光共振电离研究

Discrimination of the Source for TNT by IRMS Laser Resonant Ionization Processes of Lead Atom for the Measurement of Lead Isotopes Ratio

采用VGAxiom型多接收双聚焦等离子质谱仪（MC-ICPMS）测定Nd、Pb、U同位素比值，应用指数公式对测定的结果进行质量歧视校正。

Isotopic ratios of Nd , U and Pb were measured using VG Axiom multi-collector double-focusing inductively coupled plasma mass spectrometry ( MC-ICPMS ) .

Pb同位素比值三维空间矢量填图结果表明，在华北块体与北秦岭之间，沿洛南-栾川-方城断裂存在明显的地球化学急变带，分隔具有不同Pb同位素空间矢量组成的华北与北秦岭块体。

Based on the three-dimensional space vector of Pb isotopic mapping , it is indicated that there exist a isotopic geochemical steep zone along Luonan-Luanchuan-Fangcheng faults between north Qinling and north China block .

与稀土矿化共生的萤石显示不同的稀土配分模式，但是它们具有一致的Sr、Nd、Pb同位素比值，与碳酸岩和正长岩相似。

Fluorites associated with REE mineralization display different REE distribution patterns , but their Sr , Nd , Pb isotopic ratios are uniform , and are similar to those of carbonatites and syenites .

提出了一种将地下水中的铬与其他基本离子分离的技术，用于固体离子源热电离质谱计（TIMS）测定铬同位素比值。

A method has been developed for separating the Cr dissolved in groundwater from matrix elements and determination of its stable isotope ratios using solid-source thermal-ionization mass spectrometry TIMS .

用AgNO3+C（石墨）测定NO-3中氧同位素比值的密封石英管燃烧法，它们是1995年以后发展起来的最新测试技术。

The oxygen isotope analyses in NO ~ - _3 were conducted using a new sealed combustion quartz tube technique of AgNO_3 + C. It has become the up-to-date technique since 1995 .

近代火山物质都含有初始氩，且有不同程度的质量分馏，其同位素比值落在质量分馏线上，这表明质量分馏作用影响KAr定年的准确性，尤其是非常年轻的样品。

Recent volcanic substances contain initial argon , which underwent mass fractionation in some extent , and their isotopic ratios fell on the mass fractionation line . This implies that the fractionation influence the K Ar dating of very young samples .

本文报道了安徽亳县LL4型球粒陨石的全岩、球粒、橄榄石、辉石和陨硫铁的铅同位素比值，以及上述部分样品的铀、钍、铅的含量。

The isotopic compositions of lead were determined on the samples of whole rock , chondrule , olivine , pyroxene and troilite from Bo County chondrite ( class LL4 ) of Anhui prov . , China .

利用气相色谱/燃烧/同位素比值质谱（GC/C/IRMS）技术，采用2,4-二硝基苯肼（DNPH）衍生化，初步研究了单体化合物稳定碳同位素方法研究大气甲醛来源问题。

A method of compound-specific stable carbon isotopic analysis for the research about the sources of atmospheric formaldehyde was preliminary studied using gas chromatography / combustion / isotope ratio mass spectrometry ( GC / C / IRMS ) via 2 , 4-dinitrophenylhydrazine ( DNPH ) derivatization .

土壤及其他背景样品中铅同位素比值的测定方法

Determination of Lead Isotopic Ratios in Soil and Other Background Samples

水中放射性同位素比值测量在水化学找矿中的应用

The application of radioisotopic ratio in water to hydrogeochemical prospecting

中国东南部花岗岩的碳含量和同位素比值

Carbon Content and Isotope Composition of Granites from Southeastern China

构造环境对幔源岩中稀有气体同位素比值的制约

Constraints of tectonic setting on noble gas isotope ratios in mantle-source rocks

四川攀西地区基性超基性层状岩体锶同位素比值

Strontium isotopic ratios in BASIC-ULTRABASIC layered rocks of Panxi area , Sichuan Province

痕量分析；痕量铀、钚样品中同位素比值测定

Analysis of Isotope Ratio for Trace Uranium and Plutonium

利用激光共振电离质谱从镱镥混合物中测定镥同位素比值

Measurement of lutetium by laser resonance ionization mass spectrometry

同体儿童血、发铅浓度及同位素比值研究

Comparison of lead concentration and isotope ratios in children 's blood and hair

碳同位素比值法检测棕榈油掺入玉米油的研究

Detection of palm oil adulterated into corn oil by carbon isotope ratio method

金川铜镍硫化物样品中锇同位素比值的高精度分析

High-precise Determination of Osmium Isotopic Ratio in the Jinchuan Copper-Nickel Sulfide Ore Samples

气相色谱/燃烧炉/同位素比值质谱方法对尿中睾酮来源的检测

Determination of the Source of Testosterone in Urine with Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometry

耦合等离子体质谱测定烟叶中铅同位素比值的方法

The Analysis of Lead Isotope Ratios in Tobacco by Inductively Coupled Plasma Mass Spectrometry